Use realIP

Code was copied from https://github.com/go-chi/chi/blob/master/middleware/realip.go

.gitea/workflows/image-build.yaml

@@ -0,0 +1,35 @@
+name: Build and Push Docker Image on Tag
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    name: Build and Push Docker Image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: code.dlmw.ch
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: code.dlmw.ch/dlmw/qv:${{ env.GITHUB_REF_NAME }}

.gitignore

@@ -26,4 +26,8 @@ go.work.sum
 
 .idea
 *.iml
-*.sqlite
+*.sqlite
+
+# exclude built binary
+web
+dist/

.goreleaser.yaml

@@ -0,0 +1,43 @@
+version: 2
+
+before:
+  hooks:
+    - go mod tidy
+
+builds:
+  - id: qv
+    main: ./cmd/web
+    binary: qv
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    goarch:
+      - amd64
+      - arm64
+    goamd64:
+      - v1
+      - v2
+      - v3
+      - v4
+    goarm64:
+      - v8.0
+    ldflags:
+      - -s -w
+
+archives:
+  - id: qv-archive
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- .Version }}_
+      {{- .Os }}_
+      {{- .Arch }}_
+      {{- if eq .Arch "amd64" }}{{ .Amd64 }}
+      {{- else if eq .Arch "arm64" }}{{ .Arm64 }}
+      {{- end }}
+    formats: [ "tar.gz" ]
+    format_overrides:
+      - goos: windows
+        formats: [ "zip" ]

.idea/.gitignore

@@ -1,8 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml

Dockerfile

@@ -0,0 +1,19 @@
+FROM golang:1.23-alpine AS build
+
+WORKDIR /usr/src/qv
+
+COPY go.mod go.sum ./
+RUN go mod download && go mod verify
+
+COPY . .
+RUN go build -ldflags "-s -w" -v -o /usr/local/bin/qv ./cmd/web/
+
+FROM alpine
+
+RUN mkdir /qv
+ENV QV_DATABASE_PATH="/qv/qv.sqlite"
+VOLUME /qv
+
+COPY --from=build /usr/local/bin/qv /usr/local/bin/
+
+ENTRYPOINT ["qv"]

Makefile

@@ -0,0 +1,10 @@
+.PHONY: compile compile-snapshot clean
+
+compile:
+	@goreleaser release --clean --skip=publish
+
+compile-snapshot:
+	@goreleaser release --clean --snapshot --skip=publish
+
+clean:
+	@rm -r dist/

cmd/web/handlers.go

@@ -2,39 +2,372 @@ package main
 
 import (
 	api "code.dlmw.ch/dlmw/qv/internal"
+	"code.dlmw.ch/dlmw/qv/internal/mappers"
+	"code.dlmw.ch/dlmw/qv/internal/models"
 	"code.dlmw.ch/dlmw/qv/internal/validator"
+	"code.dlmw.ch/dlmw/qv/ui"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math"
+	"math/rand"
 	"net/http"
+	"slices"
 	"time"
 )
 
+func (app *application) indexPage(w http.ResponseWriter, r *http.Request) {
+	content, err := ui.Files.ReadFile("index.html")
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write(content)
+}
+
+func (app *application) createElectionPage(w http.ResponseWriter, r *http.Request) {
+	content, err := ui.Files.ReadFile("create-election.html")
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write(content)
+}
+
+func (app *application) getElectionResultsPage(w http.ResponseWriter, r *http.Request) {
+	content, err := ui.Files.ReadFile("election-results.html")
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write(content)
+}
+
+func (app *application) getElectionPage(w http.ResponseWriter, r *http.Request) {
+	content, err := ui.Files.ReadFile("election.html")
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write(content)
+}
+
 type createElectionRequestWithValidator struct {
 	api.CreateElectionRequest
 	validator.Validator
 }
 
-func (app *application) createElection(w http.ResponseWriter, r *http.Request) {
+func (r *createElectionRequestWithValidator) isValid() bool {
+	r.CheckField(validator.NotBlank(r.Name), "name", "must not be blank")
+	r.CheckField(validator.GreaterThan(r.Tokens, 0), "tokens", "must be greater than 0")
+	r.CheckField(validator.After(r.ExpiresAt, time.Now()), "expiresAt", "must expire in a future date")
+	r.CheckField(validator.GreaterThan(len(r.Choices), 1), "choices", "there must be more than 1 choice")
+	r.CheckField(validator.UniqueValues(r.Choices), "choices", "must not contain duplicate values")
+
+	for _, choice := range r.Choices {
+		r.CheckField(validator.NotBlank(choice), "choice", "must not be blank")
+	}
+
+	if r.AreVotersKnown {
+		r.CheckField(validator.LesserThan(r.MaxVoters, 101),
+			"maxVoters",
+			"cannot create a known-voters election with more than 100 voters",
+		)
+		r.CheckField(
+			validator.GreaterThan(r.MaxVoters, 0),
+			"maxVoters",
+			"must be greater than 0 when voters are known",
+		)
+	} else {
+		r.CheckField(
+			validator.GreaterThanOrEquals(r.MaxVoters, 0),
+			"maxVoters",
+			"must be a positive number",
+		)
+	}
+
+	return r.Valid()
+}
+
+func (app *application) CreateElection(w http.ResponseWriter, r *http.Request) {
 	var request createElectionRequestWithValidator
-	err := app.unmarshalRequest(r, &request)
+
-	if err != nil {
+	if err := app.unmarshalRequest(r, &request); err != nil {
 		app.clientError(w, http.StatusBadRequest, err.Error())
 		return
 	}
 
-	request.CheckField(validator.NotBlank(request.Name), "name", "must not be blank")
+	if !request.isValid() {
-	request.CheckField(validator.GreaterThan(request.Tokens, 0), "tokens", "must be greater than 0")
-	request.CheckField(validator.After(request.ExpiresAt, time.Now()), "expiresAt", "must expire in a future date")
-	request.CheckField(validator.GreaterThan(len(request.Choices), 1), "choices", "there must be more than 1 choice")
-
-	request.CheckField(
-		!request.IsAnonymous || (request.IsAnonymous && *request.MaxVoters > 0),
-		"maxVoters",
-		"must be greater than 0 for anonymous elections",
-	)
-
-	if !request.Valid() {
 		app.unprocessableEntityError(w, request.Validator)
 		return
 	}
 
-	w.Write([]byte("TODO"))
+	electionId, err := app.elections.Insert(
+		request.Name,
+		request.Tokens,
+		request.AreVotersKnown,
+		request.MaxVoters,
+		request.Choices,
+		request.ExpiresAt,
+	)
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	var res []byte
+	if request.AreVotersKnown {
+		voterIdentities := make([]string, 0, request.MaxVoters)
+		for i := 0; i < request.MaxVoters; i++ {
+			randomIdentity := randomVoterIdentity()
+			voterIdentities = append(voterIdentities, randomIdentity)
+		}
+		_, err = app.voters.InsertMultiple(voterIdentities, electionId)
+		if err != nil {
+			app.serverError(w, r, err)
+			return
+		}
+
+		res, err = json.Marshal(api.CreateElectionResponse{VoterIdentities: &voterIdentities})
+		if err != nil {
+			app.serverError(w, r, err)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+	}
+
+	w.Header().Set("Location", fmt.Sprintf("/election/%v", electionId))
+	w.Write(res)
+}
+
+func randomVoterIdentity() string {
+	const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	b := make([]byte, 16)
+	for i := range b {
+		b[i] = charset[rand.Intn(len(charset))]
+	}
+	return string(b)
+}
+
+type createVotesRequestWithValidator struct {
+	api.CreateVotesRequest
+	validator.Validator
+}
+
+func (r *createVotesRequestWithValidator) isValid() bool {
+	for _, choice := range r.Choices {
+		r.CheckField(validator.NotBlank(choice.ChoiceText), "choiceText", "must not be blank")
+	}
+
+	return r.Valid()
+}
+
+func (app *application) CreateVotes(w http.ResponseWriter, r *http.Request, id string) {
+	var request createVotesRequestWithValidator
+
+	if err := app.unmarshalRequest(r, &request); err != nil {
+		app.clientError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	if !request.isValid() {
+		app.unprocessableEntityError(w, request.Validator)
+		return
+	}
+
+	election, err := app.elections.GetById(id)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			app.clientError(w, http.StatusNotFound, "Couldn't find an election with the ID you provided")
+			return
+		}
+		app.serverError(w, r, err)
+	}
+
+	for _, c := range request.Choices {
+		choiceExists := slices.Contains(election.Choices, c.ChoiceText)
+		if !choiceExists {
+			app.clientError(w, http.StatusUnprocessableEntity, fmt.Sprintf("choice %v doesn't exist", c.ChoiceText))
+			return
+		}
+	}
+
+	tokensUsed := 0
+	for _, c := range request.Choices {
+		tokensUsed += c.Tokens
+	}
+
+	if tokensUsed > election.Tokens {
+		app.clientError(w, http.StatusUnprocessableEntity, fmt.Sprintf("you used too many tokens; must not exceed %v tokens", election.Tokens))
+		return
+	}
+
+	electionHasExpired := election.ExpiresAt.Before(time.Now())
+	if electionHasExpired {
+		app.clientError(w, http.StatusUnprocessableEntity, "election has expired")
+		return
+	}
+
+	var voterIdentity string
+	if election.AreVotersKnown {
+		voterIdentity, err = app.createVotesHandleKnownVotersElection(w, r, request, election)
+		if err != nil {
+			// everything will have been logged already
+			return
+		}
+	} else {
+		voterIdentity, err = app.createVotesHandleUnknownVotersElection(w, r, election)
+		if err != nil {
+			// everything will have been logged already
+			return
+		}
+	}
+
+	for _, c := range request.Choices {
+		_, err := app.votes.Insert(voterIdentity, election.ID, c.ChoiceText, c.Tokens)
+		if err != nil {
+			app.serverError(w, r, err)
+			return
+		}
+	}
+
+	w.WriteHeader(http.StatusCreated)
+}
+
+func (app *application) createVotesHandleKnownVotersElection(w http.ResponseWriter, r *http.Request, request createVotesRequestWithValidator, election *models.Election) (string, error) {
+	if request.VoterIdentity == nil || validator.Blank(*request.VoterIdentity) {
+		message := "election has known voters; you must provide an identity provided by the organizer"
+		app.clientError(w, http.StatusUnprocessableEntity, message)
+		return "", fmt.Errorf(message)
+	}
+
+	voterIdentity := *request.VoterIdentity
+	hasCastVotes, err := app.votes.Exists(voterIdentity, election.ID)
+	if err != nil {
+		app.serverError(w, r, err)
+		return "", err
+	}
+	if hasCastVotes {
+		message := "you already voted"
+		app.clientError(w, http.StatusUnprocessableEntity, message)
+		return "", fmt.Errorf(message)
+	}
+
+	voterExists, err := app.voters.Exists(voterIdentity, election.ID)
+	if err != nil {
+		app.serverError(w, r, err)
+		return "", err
+	}
+	if !voterExists {
+		message := "invalid voter identity"
+		app.clientError(w, http.StatusUnprocessableEntity, message)
+		return "", fmt.Errorf(message)
+	}
+
+	return voterIdentity, nil
+}
+
+func (app *application) createVotesHandleUnknownVotersElection(w http.ResponseWriter, r *http.Request, election *models.Election) (string, error) {
+	voterIdentity := realIP(r)
+
+	voterExists, err := app.voters.Exists(voterIdentity, election.ID)
+	if err != nil {
+		app.serverError(w, r, err)
+		return "", err
+	}
+	if voterExists {
+		message := "you already voted"
+		app.clientError(w, http.StatusUnprocessableEntity, message)
+		return "", fmt.Errorf(message)
+	}
+
+	voterCount, err := app.voters.CountByElection(election.ID)
+	if err != nil && !errors.Is(sql.ErrNoRows, err) {
+		app.serverError(w, r, err)
+		return "", err
+	}
+	if voterCount != 0 && voterCount == election.MaxVoters {
+		message := "maximum voters reached"
+		app.clientError(w, http.StatusUnprocessableEntity, message)
+		return "", fmt.Errorf(message)
+	}
+
+	_, err = app.voters.InsertMultiple([]string{voterIdentity}, election.ID)
+	if err != nil {
+		app.serverError(w, r, err)
+		return "", err
+	}
+
+	return voterIdentity, nil
+}
+
+func (app *application) GetElectionResults(w http.ResponseWriter, r *http.Request, id string) {
+	votes, err := app.votes.GetByElection(id)
+	if err != nil {
+		if errors.Is(sql.ErrNoRows, err) {
+			app.clientError(w, http.StatusNotFound, fmt.Sprintf("couldn't find votes for an election with id %v", id))
+			return
+		}
+		app.serverError(w, r, err)
+		return
+	}
+
+	results := getResultsFromVotes(votes)
+
+	response, err := json.Marshal(api.ElectionResultsResponse{Results: &results})
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Write(response)
+}
+
+func getResultsFromVotes(votes *[]models.Vote) []api.VotesForChoice {
+	votesForChoice := make(map[string]int)
+	for _, v := range *votes {
+		votesForChoice[v.ChoiceText] += int(math.Floor(math.Sqrt(float64(v.Tokens))))
+	}
+
+	results := make([]api.VotesForChoice, 0)
+	for choice, votes := range votesForChoice {
+		result := api.VotesForChoice{
+			Choice: choice,
+			Votes:  votes,
+		}
+		results = append(results, result)
+	}
+
+	return results
+}
+
+func (app *application) GetElection(w http.ResponseWriter, r *http.Request, id string) {
+	election, err := app.elections.GetById(id)
+	if err != nil {
+		if errors.Is(sql.ErrNoRows, err) {
+			app.clientError(w, http.StatusNotFound, fmt.Sprintf("couldn't find election with id %v", id))
+			return
+		}
+		app.serverError(w, r, err)
+		return
+	}
+
+	response, err := json.Marshal(mappers.ElectionResponse(election))
+	if err != nil {
+		app.serverError(w, r, err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Write(response)
 }

cmd/web/handlers_test.go

@@ -2,53 +2,920 @@ package main
 
 import (
 	"bytes"
-	api "code.dlmw.ch/dlmw/qv/internal"
+	"code.dlmw.ch/dlmw/qv/internal"
+	"code.dlmw.ch/dlmw/qv/internal/models"
+	"database/sql"
 	"encoding/json"
+	"fmt"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
 	"net/http"
 	"testing"
 	"time"
 )
 
-var (
+const baseUri = "/api/"
-	validCreateElectionRequest = api.CreateElectionRequest{
-		Choices:     []string{"Gandhi", "Buddha"},
-		ExpiresAt:   time.Now().Add(24 * time.Hour),
-		IsAnonymous: false,
-		MaxVoters:   nil,
-		Name:        "Guy of the year",
-		Tokens:      100,
-	} // TODO: try to find a way to generate test data
-)
 
 func TestCreateElection(t *testing.T) {
 	app := newTestApplication(t)
 	server := newTestServer(t, app.routes())
 	defer server.Close()
 
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("Insert", mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+		Return(id.String(), nil)
+
+	path := baseUri + "election"
+
 	tests := []struct {
 		name         string
 		urlPath      string
+		body         any
 		expectedCode int
-		expectedBody string
 	}{
 		{
-			name:         "Valid request",
+			name:    "Valid request (small name, other language)",
-			urlPath:      "/election",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"宮本武蔵", "伊東一刀斎"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "強",
+				Tokens:         100,
+			},
 			expectedCode: http.StatusOK,
-			expectedBody: "",
+		},
+		{
+			name:    "Valid request (voters unknown with unlimited voters)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusOK,
+		},
+		{
+			name:    "Valid request (with 3 choices)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha", "You"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusOK,
+		},
+		{
+			name:    "Valid request (voters unknown with max voters)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      1000,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusOK,
+		},
+		{
+			name:    "Valid request (voters known with max voters)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      10,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusOK,
+		},
+		{
+			name:    "Invalid request (not enough choices)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi"},
+				ExpiresAt:      time.Unix(0, 0),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request (expiresAt is not in the future)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Unix(0, 0),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request (max voters must be greater than 0 for known elections)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Unix(0, 0),
+				AreVotersKnown: true,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request (blank name)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha"},
+				ExpiresAt:      time.Unix(0, 0),
+				AreVotersKnown: true,
+				MaxVoters:      0,
+				Name:           "",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request (choices are not unique)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Gandhi"},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request (choices contain blank entries)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha", ""},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: false,
+				MaxVoters:      0,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for known voters election (max voters greater than 100)",
+			urlPath: path,
+			body: api.CreateElectionRequest{
+				Choices:        []string{"Gandhi", "Buddha", ""},
+				ExpiresAt:      time.Now().Add(24 * time.Hour),
+				AreVotersKnown: true,
+				MaxVoters:      101,
+				Name:           "Guy of the year",
+				Tokens:         100,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			requestBody, err := json.Marshal(validCreateElectionRequest)
+			requestBody, err := json.Marshal(tt.body)
 			if err != nil {
 				t.Fatal(err)
 			}
 
-			code, _, body := server.post(t, tt.urlPath, bytes.NewReader(requestBody))
+			code, _, _ := server.post(t, tt.urlPath, bytes.NewReader(requestBody))
-
+			assert.Equal(t, tt.expectedCode, code)
-			t.Logf("Code was %v and body %v", code, body)
 		})
 	}
 }
+
+func TestCreateElection_KnownVoters(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	electionId, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("Insert", mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+		Return(electionId.String(), nil)
+
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("InsertMultiple", mock.Anything, mock.Anything).
+		Return([]int{1}, nil)
+
+	path := baseUri + "election"
+	requestBody := api.CreateElectionRequest{
+		Choices:        []string{"宮本武蔵", "伊東一刀斎"},
+		ExpiresAt:      time.Now().Add(24 * time.Hour),
+		AreVotersKnown: true,
+		MaxVoters:      100,
+		Name:           "強",
+		Tokens:         100,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, body := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, http.StatusOK, code)
+
+	var voterIdentities struct {
+		VoterIdentities []string
+	}
+	err = json.Unmarshal([]byte(body), &voterIdentities)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Len(t, voterIdentities.VoterIdentities, 100)
+}
+
+func TestCreateElection_ServerError(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("Insert", mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+		Return(0, fmt.Errorf(""))
+
+	path := baseUri + "election"
+	requestBody := api.CreateElectionRequest{
+		Choices:        []string{"宮本武蔵", "伊東一刀斎"},
+		ExpiresAt:      time.Now().Add(24 * time.Hour),
+		AreVotersKnown: false,
+		MaxVoters:      0,
+		Name:           "強",
+		Tokens:         100,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, _ := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, 500, code)
+}
+
+func TestCreateVotes_UnknownVotersElection(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return(&models.Election{
+			ID:             id.String(),
+			Name:           "Guy of the year",
+			Tokens:         100,
+			AreVotersKnown: false,
+			MaxVoters:      100,
+			CreatedAt:      time.Now(),
+			ExpiresAt:      time.Now().Add(24 * time.Hour),
+			Choices:        []string{"Gandhi", "Buddha"},
+		}, nil)
+
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(false, nil)
+	mockVoters.
+		On("InsertMultiple", mock.Anything, mock.Anything).
+		Return([]int{1}, nil)
+	mockVoters.
+		On("CountByElection", mock.Anything).
+		Return(0, nil)
+
+	mockVotes := app.votes.(*mockVoteModel)
+	mockVotes.
+		On("Insert", mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+		Return(1, nil)
+
+	path := baseUri + "election/1/votes"
+
+	tests := []struct {
+		name         string
+		urlPath      string
+		body         any
+		expectedCode int
+	}{
+		{
+			name:    "Valid request for unknown voters election",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: nil,
+			},
+			expectedCode: http.StatusCreated,
+		},
+		{
+			name:    "Invalid request for unknown voters election (too many tokens used)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 41},
+				},
+				VoterIdentity: nil,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for unknown voters election (choice doesn't exist)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddh", Tokens: 40},
+				},
+				VoterIdentity: nil,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			requestBody, err := json.Marshal(tt.body)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			code, _, _ := server.post(t, tt.urlPath, bytes.NewReader(requestBody))
+			assert.Equal(t, tt.expectedCode, code)
+		})
+	}
+}
+
+func TestCreateVotes_KnownVotersElection(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return(&models.Election{
+			ID:             id.String(),
+			Name:           "Guy of the year",
+			Tokens:         100,
+			AreVotersKnown: true,
+			MaxVoters:      100,
+			CreatedAt:      time.Now(),
+			ExpiresAt:      time.Now().Add(24 * time.Hour),
+			Choices:        []string{"Gandhi", "Buddha"},
+		}, nil)
+
+	EXISTING_VOTER_IDENTITY := "EXISTING_VOTER_IDENTITY"
+	NON_EXISTING_VOTER_IDENTITY := "NON_EXISTING_VOTER_IDENTITY"
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("Exists", EXISTING_VOTER_IDENTITY, mock.Anything).
+		Return(true, nil)
+	mockVoters.
+		On("Exists", NON_EXISTING_VOTER_IDENTITY, mock.Anything).
+		Return(false, nil)
+
+	mockVotes := app.votes.(*mockVoteModel)
+	mockVotes.
+		On("Insert", mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+		Return(1, nil)
+	mockVotes.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(false, nil)
+
+	path := baseUri + "election/1/votes"
+
+	tests := []struct {
+		name         string
+		urlPath      string
+		body         any
+		expectedCode int
+	}{
+		{
+			name:    "Valid request for unknown voters election",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: &EXISTING_VOTER_IDENTITY,
+			},
+			expectedCode: http.StatusCreated,
+		},
+		{
+			name:    "Invalid request for unknown voters election (non-existing voter identity)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: &NON_EXISTING_VOTER_IDENTITY,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for unknown voters election (no voter identity provided)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: nil,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for unknown voters election (too many tokens used)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 41},
+				},
+				VoterIdentity: &EXISTING_VOTER_IDENTITY,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for unknown voters election (choice doesn't exist)",
+			urlPath: path,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddh", Tokens: 40},
+				},
+				VoterIdentity: &EXISTING_VOTER_IDENTITY,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			requestBody, err := json.Marshal(tt.body)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			code, _, _ := server.post(t, tt.urlPath, bytes.NewReader(requestBody))
+			assert.Equal(t, tt.expectedCode, code)
+		})
+	}
+}
+
+func TestCreateVotes_NonExistingElection(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return((*models.Election)(nil), sql.ErrNoRows)
+
+	path := baseUri + "election/1/votes"
+	requestBody := api.CreateVotesRequest{
+		Choices: []struct {
+			ChoiceText string `json:"choiceText"`
+			Tokens     int    `json:"tokens"`
+		}{
+			{ChoiceText: "Gandhi", Tokens: 60},
+			{ChoiceText: "Buddha", Tokens: 40},
+		},
+		VoterIdentity: nil,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, _ := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, http.StatusNotFound, code)
+}
+
+func TestCreateVotes_NonUuidElectionID(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return((*models.Election)(nil), sql.ErrNoRows)
+
+	path := baseUri + "election/1a/votes"
+	requestBody := api.CreateVotesRequest{
+		Choices: []struct {
+			ChoiceText string `json:"choiceText"`
+			Tokens     int    `json:"tokens"`
+		}{
+			{ChoiceText: "Gandhi", Tokens: 60},
+			{ChoiceText: "Buddha", Tokens: 40},
+		},
+		VoterIdentity: nil,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, _ := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, http.StatusNotFound, code)
+}
+
+func TestCreateVotes_AlreadyVoted(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	unknownVotersElectionId, _ := uuid.NewV7()
+	unknownVotersElection := models.Election{
+		ID:             unknownVotersElectionId.String(),
+		Name:           "Guy of the year",
+		Tokens:         100,
+		AreVotersKnown: false,
+		MaxVoters:      10,
+		CreatedAt:      time.Now(),
+		ExpiresAt:      time.Now().Add(24 * time.Hour),
+		Choices:        []string{"Gandhi", "Buddha"},
+	}
+
+	knownVotersElection := unknownVotersElection
+	knownVotersElectionId, _ := uuid.NewV7()
+	knownVotersElection.ID = knownVotersElectionId.String()
+	knownVotersElection.AreVotersKnown = true
+
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", knownVotersElectionId.String()).
+		Return(&knownVotersElection, nil)
+	mockElections.
+		On("GetById", unknownVotersElectionId.String()).
+		Return(&unknownVotersElection, nil)
+
+	mockVotes := app.votes.(*mockVoteModel)
+	mockVotes.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(true, nil)
+
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(true, nil)
+
+	layout := baseUri + "election/%v/votes"
+	knownVotersElectionPath := fmt.Sprintf(layout, unknownVotersElectionId)
+	unknownVotersElectionPath := fmt.Sprintf(layout, knownVotersElectionId)
+	voterIdentity := "anything"
+
+	tests := []struct {
+		name         string
+		urlPath      string
+		body         any
+		expectedCode int
+	}{
+		{
+			name:    "Invalid request for known voters election (already voted)",
+			urlPath: knownVotersElectionPath,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: &voterIdentity,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			name:    "Invalid request for unknown voters election (already voted)",
+			urlPath: unknownVotersElectionPath,
+			body: api.CreateVotesRequest{
+				Choices: []struct {
+					ChoiceText string `json:"choiceText"`
+					Tokens     int    `json:"tokens"`
+				}{
+					{ChoiceText: "Gandhi", Tokens: 60},
+					{ChoiceText: "Buddha", Tokens: 40},
+				},
+				VoterIdentity: &voterIdentity,
+			},
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			requestBody, err := json.Marshal(tt.body)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			code, _, _ := server.post(t, tt.urlPath, bytes.NewReader(requestBody))
+			assert.Equal(t, tt.expectedCode, code)
+		})
+	}
+}
+
+func TestCreateVotes_UnknownVotersElectionMaxVotersReached(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return(&models.Election{
+			ID:             id.String(),
+			Name:           "Guy of the year",
+			Tokens:         100,
+			AreVotersKnown: false,
+			MaxVoters:      10,
+			CreatedAt:      time.Now(),
+			ExpiresAt:      time.Now().Add(24 * time.Hour),
+			Choices:        []string{"Gandhi", "Buddha"},
+		}, nil)
+
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(false, nil)
+	mockVoters.
+		On("InsertMultiple", mock.Anything, mock.Anything).
+		Return([]int{1}, nil)
+	mockVoters.
+		On("CountByElection", mock.Anything).
+		Return(10, nil)
+
+	path := baseUri + "election/1/votes"
+	requestBody := api.CreateVotesRequest{
+		Choices: []struct {
+			ChoiceText string `json:"choiceText"`
+			Tokens     int    `json:"tokens"`
+		}{
+			{ChoiceText: "Gandhi", Tokens: 60},
+			{ChoiceText: "Buddha", Tokens: 40},
+		},
+		VoterIdentity: nil,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, _ := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, http.StatusUnprocessableEntity, code)
+}
+
+func TestCreateVotes_ExpiredElection(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return(&models.Election{
+			ID:             id.String(),
+			Name:           "Guy of the year",
+			Tokens:         100,
+			AreVotersKnown: false,
+			MaxVoters:      10,
+			CreatedAt:      time.UnixMilli(1),
+			ExpiresAt:      time.UnixMilli(100000),
+			Choices:        []string{"Gandhi", "Buddha"},
+		}, nil)
+
+	mockVoters := app.voters.(*mockVoterModel)
+	mockVoters.
+		On("Exists", mock.Anything, mock.Anything).
+		Return(false, nil)
+	mockVoters.
+		On("Insert", mock.Anything, mock.Anything).
+		Return(1, nil)
+	mockVoters.
+		On("CountByElection", mock.Anything).
+		Return(10, nil)
+
+	path := baseUri + "election/1/votes"
+	requestBody := api.CreateVotesRequest{
+		Choices: []struct {
+			ChoiceText string `json:"choiceText"`
+			Tokens     int    `json:"tokens"`
+		}{
+			{ChoiceText: "Gandhi", Tokens: 60},
+			{ChoiceText: "Buddha", Tokens: 40},
+		},
+		VoterIdentity: nil,
+	}
+	requestBodyJson, err := json.Marshal(requestBody)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	code, _, _ := server.post(t, path, bytes.NewReader(requestBodyJson))
+
+	assert.Equal(t, http.StatusUnprocessableEntity, code)
+}
+
+func TestGetElectionResults(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	electionID, _ := uuid.NewV7()
+	votes := []models.Vote{
+		{
+			VoterIdentity: "Voter1",
+			ElectionID:    electionID.String(),
+			ChoiceText:    "Choice1",
+			Tokens:        2,
+			CreatedAt:     time.Now(),
+		},
+		{
+			VoterIdentity: "Voter2",
+			ElectionID:    electionID.String(),
+			ChoiceText:    "Choice2",
+			Tokens:        4,
+			CreatedAt:     time.Now(),
+		},
+		{
+			VoterIdentity: "Voter3",
+			ElectionID:    electionID.String(),
+			ChoiceText:    "Choice3",
+			Tokens:        6,
+			CreatedAt:     time.Now(),
+		},
+		{
+			VoterIdentity: "Voter4",
+			ElectionID:    electionID.String(),
+			ChoiceText:    "Choice1",
+			Tokens:        8,
+			CreatedAt:     time.Now(),
+		},
+		{
+			VoterIdentity: "Voter5",
+			ElectionID:    electionID.String(),
+			ChoiceText:    "Choice2",
+			Tokens:        10,
+			CreatedAt:     time.Now(),
+		},
+	}
+	mockVotes := app.votes.(*mockVoteModel)
+	mockVotes.
+		On("GetByElection", electionID.String()).
+		Return(&votes, nil)
+
+	path := baseUri + fmt.Sprintf("election/%v/results", electionID)
+	code, _, body := server.get(t, path)
+
+	assert.Equal(t, http.StatusOK, code)
+
+	var response api.ElectionResultsResponse
+	err := json.Unmarshal([]byte(body), &response)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, result := range *response.Results {
+		switch result.Choice {
+		case "Choice1":
+			assert.Equal(t, 3, result.Votes)
+		case "Choice2":
+			assert.Equal(t, 5, result.Votes)
+		case "Choice3":
+			assert.Equal(t, 2, result.Votes)
+		default:
+			t.Fatalf("Unexpected choice: %s", result.Choice)
+		}
+	}
+}
+
+func TestGetElectionResults_NotFound(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	mockVotes := app.votes.(*mockVoteModel)
+	mockVotes.
+		On("GetByElection", mock.Anything).
+		Return(&[]models.Vote{}, sql.ErrNoRows)
+
+	path := baseUri + "election/1/results"
+	code, _, body := server.get(t, path)
+
+	assert.Equal(t, http.StatusNotFound, code)
+
+	var response api.ElectionResultsResponse
+	err := json.Unmarshal([]byte(body), &response)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGetElection_Found(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	id, _ := uuid.NewV7()
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return(&models.Election{
+			ID:             id.String(),
+			Name:           "Guy of the year",
+			Tokens:         100,
+			AreVotersKnown: false,
+			MaxVoters:      10,
+			CreatedAt:      time.UnixMilli(1),
+			ExpiresAt:      time.UnixMilli(100000),
+			Choices:        []string{"Gandhi", "Buddha"},
+		}, nil)
+
+	path := baseUri + "election/1"
+	code, _, _ := server.get(t, path)
+
+	assert.Equal(t, http.StatusOK, code)
+}
+
+func TestGetElection_NotFound(t *testing.T) {
+	app := newTestApplication(t)
+	server := newTestServer(t, app.routes())
+	defer server.Close()
+
+	mockElections := app.elections.(*mockElectionModel)
+	mockElections.
+		On("GetById", mock.Anything).
+		Return((*models.Election)(nil), sql.ErrNoRows)
+
+	path := baseUri + "election/1"
+	code, _, _ := server.get(t, path)
+
+	assert.Equal(t, http.StatusNotFound, code)
+}

cmd/web/helpers.go

@@ -5,10 +5,14 @@ import (
 	"code.dlmw.ch/dlmw/qv/internal/validator"
 	"encoding/json"
 	"io"
+	"net"
 	"net/http"
+	"strings"
 )
 
 func (app *application) serverError(w http.ResponseWriter, r *http.Request, err error) {
+	app.logger.Error(err.Error())
+	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusInternalServerError)
 	var response = api.ErrorResponse{
 		Code:    http.StatusInternalServerError,
@@ -18,26 +22,36 @@ func (app *application) serverError(w http.ResponseWriter, r *http.Request, err
 	json.NewEncoder(w).Encode(response)
 }
 
+func (app *application) badRequestError(w http.ResponseWriter, r *http.Request, err error) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusBadRequest)
+	var response = api.ErrorResponse{
+		Code:    http.StatusBadRequest,
+		Message: err.Error(),
+	}
+	json.NewEncoder(w).Encode(response)
+}
+
 func (app *application) clientError(w http.ResponseWriter, status int, message string) {
+	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(status)
 	var response = api.ErrorResponse{
-		Code: http.StatusUnprocessableEntity,
+		Code:    status,
-		Details: &map[string]interface{}{
+		Details: nil,
-			"error": message,
+		Message: message,
-		},
-		Message: "There was an error in the request",
 	}
 	json.NewEncoder(w).Encode(response)
 }
 
 func (app *application) unprocessableEntityError(w http.ResponseWriter, v validator.Validator) {
+	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusUnprocessableEntity)
 	var response = api.ErrorResponse{
 		Code: http.StatusUnprocessableEntity,
 		Details: &map[string]interface{}{
 			"fields": v.FieldErrors,
 		},
-		Message: "Election data is invalid",
+		Message: "Request data is invalid",
 	}
 	json.NewEncoder(w).Encode(response)
 }
@@ -55,3 +69,23 @@ func (app *application) unmarshalRequest(r *http.Request, dst any) error {
 
 	return nil
 }
+
+func realIP(r *http.Request) string {
+	var ip string
+
+	if tcip := r.Header.Get(http.CanonicalHeaderKey("True-Client-IP")); tcip != "" {
+		ip = tcip
+	} else if xrip := r.Header.Get(http.CanonicalHeaderKey("X-Real-IP")); xrip != "" {
+		ip = xrip
+	} else if xff := r.Header.Get(http.CanonicalHeaderKey("X-Forwarded-For")); xff != "" {
+		i := strings.Index(xff, ",")
+		if i == -1 {
+			i = len(xff)
+		}
+		ip = xff[:i]
+	}
+	if ip == "" || net.ParseIP(ip) == nil {
+		return ""
+	}
+	return ip
+}

cmd/web/main.go

@@ -3,23 +3,29 @@
 package main
 
 import (
+	"code.dlmw.ch/dlmw/qv/internal/migrations"
 	"code.dlmw.ch/dlmw/qv/internal/models"
+	"context"
 	"database/sql"
-	"github.com/go-playground/form/v4"
-	_ "github.com/mattn/go-sqlite3"
 	"log/slog"
+	_ "modernc.org/sqlite"
 	"net/http"
 	"os"
+	"os/signal"
+	"syscall"
 	"time"
 )
 
-type application struct {
-	logger      *slog.Logger
-	elections   models.ElectionModelInterface
-	formDecoder *form.Decoder
-}
-
 var addr = ":8080"
+var databasePath string
+
+func init() {
+	if os.Getenv("QV_DATABASE_PATH") == "" {
+		databasePath = "./qv.sqlite"
+	} else {
+		databasePath = os.Getenv("QV_DATABASE_PATH")
+	}
+}
 
 func main() {
 	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
@@ -30,13 +36,17 @@ func main() {
 		os.Exit(1)
 	}
 	defer db.Close()
-
+	err = migrations.Run(db)
-	formDecoder := form.NewDecoder()
+	if err != nil {
+		logger.Error(err.Error())
+		os.Exit(1)
+	}
 
 	app := &application{
-		logger:      logger,
+		logger:    logger,
-		elections:   &models.ElectionModel{DB: db},
+		elections: &models.ElectionModel{DB: db},
-		formDecoder: formDecoder,
+		voters:    &models.VoterModel{DB: db},
+		votes:     &models.VoteModel{DB: db},
 	}
 
 	logger.Info("Starting server", "addr", addr)
@@ -45,20 +55,38 @@ func main() {
 		Addr:         addr,
 		Handler:      app.routes(),
 		ErrorLog:     slog.NewLogLogger(logger.Handler(), slog.LevelError),
-		IdleTimeout:  time.Minute,
+		IdleTimeout:  30 * time.Second,
 		ReadTimeout:  5 * time.Second,
 		WriteTimeout: 10 * time.Second,
 	}
 
-	err = srv.ListenAndServe()
+	go watchForQuitSignals(srv, logger)
-	logger.Error(err.Error())
+
-	os.Exit(1)
+	if err = srv.ListenAndServe(); err != nil {
+		logger.Error(err.Error())
+		os.Exit(1)
+	}
 }
 
 func openDb() (*sql.DB, error) {
-	db, err := sql.Open("sqlite3", "./qv.sqlite")
+	db, err := sql.Open("sqlite", databasePath+"?_foreign_keys=on&_busy_timeout=5000")
 	if err == nil {
 		err = db.Ping()
 	}
+
 	return db, err
 }
+
+func watchForQuitSignals(srv *http.Server, logger *slog.Logger) {
+	quit := make(chan os.Signal, 1)
+
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	s := <-quit
+	logger.Info("caught signal", "signal", s.String())
+	srv.Shutdown(ctx)
+	os.Exit(0)
+}

cmd/web/middleware.go

@@ -20,7 +20,7 @@ func (app *application) recoverPanic(next http.Handler) http.Handler {
 func (app *application) logRequest(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		var (
-			ip     = r.RemoteAddr
+			ip     = realIP(r)
 			proto  = r.Proto
 			method = r.Method
 			uri    = r.URL.RequestURI()
@@ -29,3 +29,10 @@ func (app *application) logRequest(next http.Handler) http.Handler {
 		next.ServeHTTP(w, r)
 	})
 }
+
+func (app *application) cacheStatic(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "public, max-age=86400")
+		next.ServeHTTP(w, r)
+	})
+}

cmd/web/openapi.yml

@@ -3,7 +3,7 @@ info:
   title: qv - dlmw
   description: |-
     This is the documentation for the qv (Quadratic Voting) API.
-  termsOfService: http://swagger.io/terms/
+  termsOfService:
   contact:
     email: dylan@dlmw.ch
   license:
@@ -11,15 +11,49 @@ info:
     url: https://www.gnu.org/licenses/gpl-3.0.txt
   version: 0.0.1
 externalDocs:
-  description: Find out more about qv # todo
+  description: Get the code
-  url: http://swagger.io # todo
+  url: https://code.dlmw.ch/dlmw/qv
 servers:
-  - url: https://petstore3.swagger.io/api/v3 # todo
+  - url: https://qv.dlmw.ch/api
 tags:
   - name: election
     description: Retrieve data related to elections
+  - name: vote
+    description: Retrieve data related to votes
 
 paths:
+  /election/{id}:
+    get:
+      tags:
+        - election
+      summary: Get an election
+      operationId: getElection
+      parameters:
+        - name: id
+          in: path
+          required: true
+          description: The ID of the election
+          schema:
+            type: string
+      responses:
+        200:
+          description: Election returned
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Election"
+        400:
+          description: Request malformed
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        404:
+          description: Election not found
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
   /election:
     post:
       tags:
@@ -32,14 +66,114 @@ paths:
             schema:
               $ref: "#/components/schemas/CreateElectionRequest"
       responses:
-        201:
+        200:
-          description: Election created
+          description: Election created. Body only returned if voterAreKnown is true
+          headers:
+            Location:
+              schema:
+                type: string
+              description: The path to the newly created election
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CreateElectionResponse"
         422:
           description: Unprocessable Content
           content:
             application/json:
               schema:
                 $ref: "#/components/schemas/ErrorResponse"
+        500:
+          description: Server error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+
+  /election/{id}/votes:
+    post:
+      tags:
+        - vote
+      summary: Cast your votes for an election
+      operationId: createVotes
+      parameters:
+        - name: id
+          in: path
+          required: true
+          description: The ID of the election
+          schema:
+            type: string
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/CreateVotesRequest"
+      responses:
+        201:
+          description: Votes cast
+        400:
+          description: Request malformed
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        404:
+          description: Election not found
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        422:
+          description: Unprocessable content
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        500:
+          description: Server error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+
+  /election/{id}/results:
+    get:
+      tags:
+        - election
+      summary: Get the results of an election
+      operationId: getElectionResults
+      parameters:
+        - name: id
+          in: path
+          required: true
+          description: The ID of the election
+          schema:
+            type: string
+      responses:
+        200:
+          description: Election results returned
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ElectionResultsResponse"
+        400:
+          description: Request malformed
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        404:
+          description: Election doesn't exist
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        500:
+          description: Server error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
 
 components:
   schemas:
@@ -49,124 +183,54 @@ components:
         - id
         - name
         - tokens
-        - is_anonymous
+        - areVotersKnown
-        - expires_at
+        - maxVoters
+        - createdAt
+        - expiresAt
+        - choices
       properties:
         id:
-          type: integer
+          type: string
-          format: int64
-          readOnly: true
         name:
           type: string
-          minLength: 1
         tokens:
           type: integer
-          minimum: 0
+        areVotersKnown:
-        is_anonymous:
           type: boolean
-        max_voters:
+        maxVoters:
           type: integer
-          minimum: 1
+        createdAt:
-          nullable: true
-          description: Required when election is anonymous
-        created_at:
           type: string
-          format: date-time
+        expiresAt:
-          readOnly: true
-        expires_at:
           type: string
-          format: date-time
         choices:
           type: array
           items:
-            $ref: '#/components/schemas/Choice'
+            type: string
-        voters:
-          type: array
-          items:
-            $ref: '#/components/schemas/Voter'
-
-    Choice:
-      type: object
-      required:
-        - text
-        - election_id
-      properties:
-        text:
-          type: string
-          minLength: 1
-        election_id:
-          type: integer
-          format: int64
-
-    Voter:
-      type: object
-      required:
-        - identity
-        - election_id
-      properties:
-        identity:
-          type: string
-          minLength: 1
-          description: When election is anonymous, passcodes will be pre-generated
-        election_id:
-          type: integer
-          format: int64
-        votes:
-          type: array
-          items:
-            $ref: '#/components/schemas/Vote'
-
-    Vote:
-      type: object
-      required:
-        - voter_identity
-        - election_id
-      properties:
-        voter_identity:
-          type: string
-          minLength: 1
-        election_id:
-          type: integer
-          format: int64
-        choice_text:
-          type: string
-          nullable: true
-        tokens:
-          type: integer
-          minimum: 0
-          nullable: true
-        calculated_vote_count:
-          type: integer
-          readOnly: true
-          description: Calculated as floor(sqrt(tokens))
-        created_at:
-          type: string
-          format: date-time
-          readOnly: true
 
     CreateElectionRequest:
       type: object
       required:
         - name
         - tokens
-        - is_anonymous
+        - areVotersKnown
-        - expires_at
+        - maxVoters
+        - expiresAt
         - choices
       properties:
         name:
           type: string
           minLength: 1
         tokens:
-          type: integer
-          minimum: 0
-        is_anonymous:
-          type: boolean
-        max_voters:
           type: integer
           minimum: 1
-          nullable: true
+        areVotersKnown:
-          description: Required when election is anonymous
+          type: boolean
-        expires_at:
+        maxVoters:
+          type: integer
+          minimum: 0
+          description: Must be greater than 0 when voters are known; 0 = no limit
+        expiresAt:
           type: string
           format: date-time
         choices:
@@ -177,6 +241,56 @@ components:
           minItems: 1
           uniqueItems: true
 
+    CreateElectionResponse:
+      type: object
+      properties:
+        voterIdentities:
+          type: array
+          items:
+            type: string
+            minLength: 1
+          uniqueItems: true
+
+    CreateVotesRequest:
+      type: object
+      required:
+        - choices
+      properties:
+        voterIdentity:
+          type: string
+          description: Must be filled if election has known voters
+        choices:
+          type: array
+          items:
+            required:
+              - choiceText
+              - tokens
+            properties:
+              choiceText:
+                type: string
+                minLength: 1
+              tokens:
+                type: integer
+
+    ElectionResultsResponse:
+      type: object
+      properties:
+        results:
+          type: array
+          items:
+            $ref: "#/components/schemas/VotesForChoice"
+
+    VotesForChoice:
+      type: object
+      required:
+        - choice
+        - votes
+      properties:
+        choice:
+          type: string
+        votes:
+          type: integer
+
     ErrorResponse:
       type: object
       required:
@@ -191,5 +305,4 @@ components:
           description: Machine-readable error code
         details:
           type: object
-          description: Additional error details when available
+          description: Additional error details when available
-          nullable: true

cmd/web/routes.go

@@ -1,14 +1,37 @@
 package main
 
 import (
+	api "code.dlmw.ch/dlmw/qv/internal"
+	"code.dlmw.ch/dlmw/qv/internal/models"
+	"code.dlmw.ch/dlmw/qv/ui"
 	"github.com/justinas/alice"
+	"log/slog"
 	"net/http"
 )
 
+type application struct {
+	logger    *slog.Logger
+	elections models.ElectionModelInterface
+	voters    models.VoterModelInterface
+	votes     models.VoteModelInterface
+}
+
 func (app *application) routes() http.Handler {
 	mux := http.NewServeMux()
 
-	mux.HandleFunc("POST /election", app.createElection)
+	cached := alice.New(app.cacheStatic)
+	mux.Handle("GET /static/", cached.Then(http.FileServerFS(ui.Files)))
+
+	mux.HandleFunc("GET /", app.indexPage)
+	mux.HandleFunc("GET /election/create", app.createElectionPage)
+	mux.HandleFunc("GET /election/{id}/results", app.getElectionResultsPage)
+	mux.HandleFunc("GET /election/{id}", app.getElectionPage)
+
+	api.HandlerWithOptions(app, api.StdHTTPServerOptions{
+		BaseRouter:       mux,
+		BaseURL:          "/api",
+		ErrorHandlerFunc: app.badRequestError,
+	})
 
 	standard := alice.New(app.recoverPanic, app.logRequest)
 	return standard.Then(mux)

cmd/web/testutils_test.go

@@ -1,22 +1,23 @@
 package main
 
 import (
+	"bytes"
 	"code.dlmw.ch/dlmw/qv/internal/models"
-	"github.com/go-playground/form/v4"
+	"github.com/stretchr/testify/mock"
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"time"
 )
 
 func newTestApplication(t *testing.T) *application {
-	formDecoder := form.NewDecoder()
-
 	return &application{
-		logger:      slog.New(slog.NewTextHandler(io.Discard, nil)),
+		logger:    slog.New(slog.NewTextHandler(io.Discard, nil)),
-		elections:   &models.ElectionModel{},
+		elections: &mockElectionModel{},
-		formDecoder: formDecoder,
+		voters:    &mockVoterModel{},
+		votes:     &mockVoteModel{},
 	}
 }
 
@@ -29,6 +30,22 @@ func newTestServer(t *testing.T, h http.Handler) *testServer {
 	return &testServer{server}
 }
 
+func (ts *testServer) get(t *testing.T, urlPath string) (int, http.Header, string) {
+	rs, err := ts.Client().Get(ts.URL + urlPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rs.Body.Close()
+
+	body, err := io.ReadAll(rs.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	body = bytes.TrimSpace(body)
+
+	return rs.StatusCode, rs.Header, string(body)
+}
+
 func (ts *testServer) post(t *testing.T, urlPath string, body io.Reader) (int, http.Header, string) {
 	res, err := ts.Client().Post(ts.URL+urlPath, "application/json", body)
 	if err != nil {
@@ -43,3 +60,55 @@ func (ts *testServer) post(t *testing.T, urlPath string, body io.Reader) (int, h
 
 	return res.StatusCode, res.Header, string(responseBody)
 }
+
+type mockElectionModel struct {
+	mock.Mock
+}
+
+func (e *mockElectionModel) Insert(name string, tokens int, areVotersKnown bool, maxVoters int, choices []string, expiresAt time.Time) (string, error) {
+	args := e.Called(name, tokens, areVotersKnown, maxVoters, choices, expiresAt)
+	return args.String(0), args.Error(1)
+}
+
+func (e *mockElectionModel) GetById(id string) (*models.Election, error) {
+	args := e.Called(id)
+	return args.Get(0).(*models.Election), args.Error(1)
+}
+
+type mockVoterModel struct {
+	mock.Mock
+}
+
+func (v *mockVoterModel) InsertMultiple(identities []string, electionID string) ([]int, error) {
+	args := v.Called(identities, electionID)
+	return args.Get(0).([]int), args.Error(1)
+}
+
+func (v *mockVoterModel) CountByElection(electionID string) (int, error) {
+	args := v.Called(electionID)
+	return args.Int(0), args.Error(1)
+}
+
+func (v *mockVoterModel) Exists(voterIdentity string, electionID string) (bool, error) {
+	args := v.Called(voterIdentity, electionID)
+	return args.Bool(0), args.Error(1)
+}
+
+type mockVoteModel struct {
+	mock.Mock
+}
+
+func (v *mockVoteModel) Insert(voterIdentity string, electionId string, choiceText string, tokens int) (int, error) {
+	args := v.Called(voterIdentity, electionId, choiceText, tokens)
+	return args.Int(0), args.Error(1)
+}
+
+func (v *mockVoteModel) Exists(voterIdentity string, electionID string) (bool, error) {
+	args := v.Called(voterIdentity, electionID)
+	return args.Bool(0), args.Error(1)
+}
+
+func (v *mockVoteModel) GetByElection(electionID string) (*[]models.Vote, error) {
+	args := v.Called(electionID)
+	return args.Get(0).(*[]models.Vote), args.Error(1)
+}

go.mod

@@ -3,7 +3,40 @@ module code.dlmw.ch/dlmw/qv
 go 1.23.4
 
 require (
-	github.com/go-playground/form/v4 v4.2.1
+	github.com/golang-migrate/migrate/v4 v4.18.1
+	github.com/google/uuid v1.6.0
 	github.com/justinas/alice v1.2.0
-	github.com/mattn/go-sqlite3 v1.14.24
+	github.com/oapi-codegen/runtime v1.1.1
+	github.com/stretchr/testify v1.9.0
+	modernc.org/sqlite v1.18.1
+)
+
+require (
+	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.22 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
+	golang.org/x/tools v0.24.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	lukechampine.com/uint128 v1.2.0 // indirect
+	modernc.org/cc/v3 v3.36.3 // indirect
+	modernc.org/ccgo/v3 v3.16.9 // indirect
+	modernc.org/libc v1.17.1 // indirect
+	modernc.org/mathutil v1.5.0 // indirect
+	modernc.org/memory v1.2.1 // indirect
+	modernc.org/opt v0.1.3 // indirect
+	modernc.org/strutil v1.1.3 // indirect
+	modernc.org/token v1.0.0 // indirect
 )

go.sum

@@ -1,178 +1,131 @@
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+modernc.org/libc v1.17.0/go.mod h1:XsgLldpP4aWlPlsjqKRdHPqCxCjISdHfM/yeWC5GyW0=
+modernc.org/libc v1.17.1 h1:Q8/Cpi36V/QBfuQaFVeisEBs3WqoGAJprZzmf7TfEYI=
+modernc.org/libc v1.17.1/go.mod h1:FZ23b+8LjxZs7XtFMbSzL/EhPxNbfZbErxEHc7cbD9s=
+modernc.org/mathutil v1.2.2/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
+modernc.org/mathutil v1.4.1/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
+modernc.org/mathutil v1.5.0 h1:rV0Ko/6SfM+8G+yKiyI830l3Wuz1zRutdslNoQ0kfiQ=
+modernc.org/mathutil v1.5.0/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
+modernc.org/memory v1.2.0/go.mod h1:/0wo5ibyrQiaoUoH7f9D8dnglAmILJ5/cxZlRECf+Nw=
+modernc.org/memory v1.2.1 h1:dkRh86wgmq/bJu2cAS2oqBCz/KsMZU7TUM4CibQ7eBs=
+modernc.org/memory v1.2.1/go.mod h1:PkUhL0Mugw21sHPeskwZW4D6VscE/GQJOnIpCnW6pSU=
+modernc.org/opt v0.1.1/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
+modernc.org/opt v0.1.3 h1:3XOZf2yznlhC+ibLltsDGzABUGVx8J6pnFMS3E4dcq4=
+modernc.org/opt v0.1.3/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
+modernc.org/sqlite v1.18.1 h1:ko32eKt3jf7eqIkCgPAeHMBXw3riNSLhl2f3loEF7o8=
+modernc.org/sqlite v1.18.1/go.mod h1:6ho+Gow7oX5V+OiOQ6Tr4xeqbx13UZ6t+Fw9IRUG4d4=
+modernc.org/strutil v1.1.1/go.mod h1:DE+MQQ/hjKBZS2zNInV5hhcipt5rLPWkmpbGeW5mmdw=
+modernc.org/strutil v1.1.3 h1:fNMm+oJklMGYfU9Ylcywl0CO5O6nTfaowNsh2wpPjzY=
+modernc.org/strutil v1.1.3/go.mod h1:MEHNA7PdEnEwLvspRMtWTNnp2nnyvMfkimT1NKNAGbw=
+modernc.org/tcl v1.13.1 h1:npxzTwFTZYM8ghWicVIX1cRWzj7Nd8i6AqqX2p+IYao=
+modernc.org/tcl v1.13.1/go.mod h1:XOLfOwzhkljL4itZkK6T72ckMgvj0BDsnKNdZVUOecw=
+modernc.org/token v1.0.0 h1:a0jaWiNMDhDUtqOj09wvjWWAqd3q7WpBulmL9H2egsk=
+modernc.org/token v1.0.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
+modernc.org/z v1.5.1 h1:RTNHdsrOpeoSeOF4FbzTo8gBYByaJ5xT7NgZ9ZqRiJM=
+modernc.org/z v1.5.1/go.mod h1:eWFB510QWW5Th9YGZT81s+LwvaAs3Q2yr4sP0rmLkv8=

internal/generated.go

@@ -9,40 +9,93 @@ import (
 	"fmt"
 	"net/http"
 	"time"
+
+	"github.com/oapi-codegen/runtime"
 )
 
 // CreateElectionRequest defines model for CreateElectionRequest.
 type CreateElectionRequest struct {
-	Choices     []string  `json:"choices"`
+	AreVotersKnown bool      `json:"areVotersKnown"`
-	ExpiresAt   time.Time `json:"expires_at"`
+	Choices        []string  `json:"choices"`
-	IsAnonymous bool      `json:"is_anonymous"`
+	ExpiresAt      time.Time `json:"expiresAt"`
 
-	// MaxVoters Required when election is anonymous
+	// MaxVoters Must be greater than 0 when voters are known; 0 = no limit
-	MaxVoters *int   `json:"max_voters"`
+	MaxVoters int    `json:"maxVoters"`
 	Name      string `json:"name"`
 	Tokens    int    `json:"tokens"`
 }
 
+// CreateElectionResponse defines model for CreateElectionResponse.
+type CreateElectionResponse struct {
+	VoterIdentities *[]string `json:"voterIdentities,omitempty"`
+}
+
+// CreateVotesRequest defines model for CreateVotesRequest.
+type CreateVotesRequest struct {
+	Choices []struct {
+		ChoiceText string `json:"choiceText"`
+		Tokens     int    `json:"tokens"`
+	} `json:"choices"`
+
+	// VoterIdentity Must be filled if election has known voters
+	VoterIdentity *string `json:"voterIdentity,omitempty"`
+}
+
+// Election defines model for Election.
+type Election struct {
+	AreVotersKnown bool     `json:"areVotersKnown"`
+	Choices        []string `json:"choices"`
+	CreatedAt      string   `json:"createdAt"`
+	ExpiresAt      string   `json:"expiresAt"`
+	Id             string   `json:"id"`
+	MaxVoters      int      `json:"maxVoters"`
+	Name           string   `json:"name"`
+	Tokens         int      `json:"tokens"`
+}
+
+// ElectionResultsResponse defines model for ElectionResultsResponse.
+type ElectionResultsResponse struct {
+	Results *[]VotesForChoice `json:"results,omitempty"`
+}
+
 // ErrorResponse defines model for ErrorResponse.
 type ErrorResponse struct {
 	// Code Machine-readable error code
 	Code int `json:"code"`
 
 	// Details Additional error details when available
-	Details *map[string]interface{} `json:"details"`
+	Details *map[string]interface{} `json:"details,omitempty"`
 
 	// Message Human-readable error message
 	Message string `json:"message"`
 }
 
+// VotesForChoice defines model for VotesForChoice.
+type VotesForChoice struct {
+	Choice string `json:"choice"`
+	Votes  int    `json:"votes"`
+}
+
 // CreateElectionJSONRequestBody defines body for CreateElection for application/json ContentType.
 type CreateElectionJSONRequestBody = CreateElectionRequest
 
+// CreateVotesJSONRequestBody defines body for CreateVotes for application/json ContentType.
+type CreateVotesJSONRequestBody = CreateVotesRequest
+
 // ServerInterface represents all server handlers.
 type ServerInterface interface {
 	// Create a new election
 	// (POST /election)
 	CreateElection(w http.ResponseWriter, r *http.Request)
+	// Get an election
+	// (GET /election/{id})
+	GetElection(w http.ResponseWriter, r *http.Request, id string)
+	// Get the results of an election
+	// (GET /election/{id}/results)
+	GetElectionResults(w http.ResponseWriter, r *http.Request, id string)
+	// Cast your votes for an election
+	// (POST /election/{id}/votes)
+	CreateVotes(w http.ResponseWriter, r *http.Request, id string)
 }
 
 // ServerInterfaceWrapper converts contexts to parameters.
@@ -69,6 +122,84 @@ func (siw *ServerInterfaceWrapper) CreateElection(w http.ResponseWriter, r *http
 	handler.ServeHTTP(w, r.WithContext(ctx))
 }
 
+// GetElection operation middleware
+func (siw *ServerInterfaceWrapper) GetElection(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	var err error
+
+	// ------------- Path parameter "id" -------------
+	var id string
+
+	err = runtime.BindStyledParameterWithOptions("simple", "id", r.PathValue("id"), &id, runtime.BindStyledParameterOptions{ParamLocation: runtime.ParamLocationPath, Explode: false, Required: true})
+	if err != nil {
+		siw.ErrorHandlerFunc(w, r, &InvalidParamFormatError{ParamName: "id", Err: err})
+		return
+	}
+
+	handler := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		siw.Handler.GetElection(w, r, id)
+	}))
+
+	for _, middleware := range siw.HandlerMiddlewares {
+		handler = middleware(handler)
+	}
+
+	handler.ServeHTTP(w, r.WithContext(ctx))
+}
+
+// GetElectionResults operation middleware
+func (siw *ServerInterfaceWrapper) GetElectionResults(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	var err error
+
+	// ------------- Path parameter "id" -------------
+	var id string
+
+	err = runtime.BindStyledParameterWithOptions("simple", "id", r.PathValue("id"), &id, runtime.BindStyledParameterOptions{ParamLocation: runtime.ParamLocationPath, Explode: false, Required: true})
+	if err != nil {
+		siw.ErrorHandlerFunc(w, r, &InvalidParamFormatError{ParamName: "id", Err: err})
+		return
+	}
+
+	handler := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		siw.Handler.GetElectionResults(w, r, id)
+	}))
+
+	for _, middleware := range siw.HandlerMiddlewares {
+		handler = middleware(handler)
+	}
+
+	handler.ServeHTTP(w, r.WithContext(ctx))
+}
+
+// CreateVotes operation middleware
+func (siw *ServerInterfaceWrapper) CreateVotes(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	var err error
+
+	// ------------- Path parameter "id" -------------
+	var id string
+
+	err = runtime.BindStyledParameterWithOptions("simple", "id", r.PathValue("id"), &id, runtime.BindStyledParameterOptions{ParamLocation: runtime.ParamLocationPath, Explode: false, Required: true})
+	if err != nil {
+		siw.ErrorHandlerFunc(w, r, &InvalidParamFormatError{ParamName: "id", Err: err})
+		return
+	}
+
+	handler := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		siw.Handler.CreateVotes(w, r, id)
+	}))
+
+	for _, middleware := range siw.HandlerMiddlewares {
+		handler = middleware(handler)
+	}
+
+	handler.ServeHTTP(w, r.WithContext(ctx))
+}
+
 type UnescapedCookieParamError struct {
 	ParamName string
 	Err       error
@@ -184,6 +315,9 @@ func HandlerWithOptions(si ServerInterface, options StdHTTPServerOptions) http.H
 	}
 
 	m.HandleFunc("POST "+options.BaseURL+"/election", wrapper.CreateElection)
+	m.HandleFunc("GET "+options.BaseURL+"/election/{id}", wrapper.GetElection)
+	m.HandleFunc("GET "+options.BaseURL+"/election/{id}/results", wrapper.GetElectionResults)
+	m.HandleFunc("POST "+options.BaseURL+"/election/{id}/votes", wrapper.CreateVotes)
 
 	return m
 }

internal/mappers/elections.go

@@ -0,0 +1,19 @@
+package mappers
+
+import (
+	api "code.dlmw.ch/dlmw/qv/internal"
+	"code.dlmw.ch/dlmw/qv/internal/models"
+)
+
+func ElectionResponse(election *models.Election) *api.Election {
+	return &api.Election{
+		Id:             election.ID,
+		Name:           election.Name,
+		Tokens:         election.Tokens,
+		AreVotersKnown: election.AreVotersKnown,
+		MaxVoters:      election.MaxVoters,
+		CreatedAt:      election.CreatedAt.String(),
+		ExpiresAt:      election.ExpiresAt.String(),
+		Choices:        election.Choices,
+	}
+}

internal/mappers/elections_test.go

@@ -0,0 +1,48 @@
+package mappers
+
+import (
+	"code.dlmw.ch/dlmw/qv/internal/models"
+	uuid2 "github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"testing"
+	"time"
+)
+
+func TestElectionResponse(t *testing.T) {
+	layout := "2006-01-02 15:04:05 -0700"
+	parsedCreatedAtTime, err := time.Parse(layout, "2025-01-14 15:13:37 +0000")
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	parsedExpiresAtTime, err := time.Parse(layout, "2025-01-15 15:13:37 +0000")
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	uuid, _ := uuid2.NewV7()
+	election := models.Election{
+		ID:             uuid.String(),
+		Name:           "The best",
+		Tokens:         100,
+		AreVotersKnown: true,
+		MaxVoters:      150,
+		CreatedAt:      parsedCreatedAtTime.In(time.UTC),
+		ExpiresAt:      parsedExpiresAtTime.In(time.UTC),
+		Choices:        []string{"You", "Me"},
+	}
+
+	response := ElectionResponse(&election)
+
+	assert.Equal(t, uuid.String(), response.Id)
+	assert.Equal(t, "The best", response.Name)
+	assert.Equal(t, 100, response.Tokens)
+	assert.Equal(t, true, response.AreVotersKnown)
+	assert.Equal(t, 150, response.MaxVoters)
+	assert.Equal(t, "2025-01-14 15:13:37 +0000 UTC", response.CreatedAt)
+	assert.Equal(t, "2025-01-15 15:13:37 +0000 UTC", response.ExpiresAt)
+
+	for _, choice := range election.Choices {
+		assert.Contains(t, election.Choices, choice)
+	}
+}

internal/migrations/migrations.go

@@ -0,0 +1,37 @@
+package migrations
+
+import (
+	"database/sql"
+	"embed"
+	"errors"
+	"github.com/golang-migrate/migrate/v4"
+	msqlite3 "github.com/golang-migrate/migrate/v4/database/sqlite3"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	"github.com/golang-migrate/migrate/v4/source/iofs"
+)
+
+//go:embed sql/*.sql
+var migrationsFS embed.FS
+
+func Run(db *sql.DB) error {
+	driver, err := msqlite3.WithInstance(db, &msqlite3.Config{})
+	if err != nil {
+		return err
+	}
+
+	d, err := iofs.New(migrationsFS, "sql")
+	if err != nil {
+		return err
+	}
+
+	m, err := migrate.NewWithInstance("iofs", d, "sqlite", driver)
+	if err != nil {
+		return err
+	}
+
+	if err = m.Up(); err != nil && !errors.Is(migrate.ErrNoChange, err) {
+		return err
+	}
+
+	return nil
+}

internal/migrations/sql/000001_init.up.sql

@@ -1,12 +1,12 @@
 CREATE TABLE elections (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    id TEXT PRIMARY KEY,
     name TEXT NOT NULL,
     tokens INTEGER NOT NULL,
-    is_anonymous INTEGER NOT NULL,
+    are_voters_known INTEGER NOT NULL,
-    max_voters INTEGER, -- mandatory when election is anonymous
+    max_voters INTEGER NOT NULL, -- must be greater than 0 when voters are known
     created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
     expires_at DATETIME NOT NULL,
-    CHECK (is_anonymous = 0 OR (is_anonymous = 1 AND max_voters IS NOT NULL AND max_voters >= 1))
+    CHECK (are_voters_known = 0 OR (are_voters_known = 1 AND max_voters IS NOT NULL AND max_voters >= 1))
 );
 
 CREATE TRIGGER prevent_created_at_update_election
@@ -23,7 +23,7 @@ CREATE TABLE choices (
 );
 
 CREATE TABLE voters (
-    identity TEXT NOT NULL, -- when election is anonymous, passcodes will be pre-generated
+    identity TEXT NOT NULL, -- when voters are known, passcodes will be pre-generated
     election_id INTEGER NOT NULL,
     PRIMARY KEY (identity, election_id),
     FOREIGN KEY (election_id) REFERENCES elections (id)
@@ -35,7 +35,7 @@ CREATE TRIGGER enforce_max_voters
         SELECT 1
         FROM elections e
         WHERE e.id = NEW.election_id
-          AND e.max_voters IS NOT NULL
+          AND e.max_voters != 0
     )
 BEGIN
     SELECT CASE
@@ -57,7 +57,6 @@ CREATE TABLE votes (
     election_id INTEGER NOT NULL,
     choice_text TEXT NOT NULL,
     tokens INTEGER NOT NULL,
-    calculated_vote_count GENERATED ALWAYS AS (floor(sqrt(tokens))) VIRTUAL,
     created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
     PRIMARY KEY (voter_identity, choice_text),
     FOREIGN KEY (voter_identity, election_id) REFERENCES voters (identity, election_id),
@@ -70,5 +69,3 @@ CREATE TRIGGER prevent_created_at_update_votes
 BEGIN
     SELECT RAISE(FAIL, 'created_at column is read-only');
 END;
-
-PRAGMA foreign_keys = ON; -- run after opening the connection so foreign key constraints are checked

internal/models/elections.go

@@ -2,18 +2,111 @@ package models
 
 import (
 	"database/sql"
+	"github.com/google/uuid"
 	"time"
 )
 
 type ElectionModelInterface interface {
-	Insert(name string, tokens int, isAnonymous bool, maxVoters int, Choices []string, ExpiresAt time.Time) (int, error)
+	Insert(name string, tokens int, areVotersKnown bool, maxVoters int, Choices []string, ExpiresAt time.Time) (string, error)
+	GetById(id string) (*Election, error)
 }
 
 type ElectionModel struct {
 	DB *sql.DB
 }
 
-func (e *ElectionModel) Insert(name string, tokens int, isAnonymous bool, maxVoters int, Choices []string, ExpiresAt time.Time) (int, error) {
+type Election struct {
-	//TODO implement me
+	ID             string
-	panic("implement me")
+	Name           string
+	Tokens         int
+	AreVotersKnown bool
+	MaxVoters      int
+	CreatedAt      time.Time
+	ExpiresAt      time.Time
+	Choices        []string
+}
+
+func (e *ElectionModel) Insert(name string, tokens int, areVotersKnown bool, maxVoters int, choices []string, expiresAt time.Time) (string, error) {
+	tx, err := e.DB.Begin()
+	if err != nil {
+		return "", err
+	}
+	defer tx.Rollback()
+
+	electionID, err := uuid.NewV7()
+	if err != nil {
+		return "", err
+	}
+
+	_, err = tx.Exec(`
+		INSERT INTO elections (id, name, tokens, are_voters_known, max_voters, expires_at)
+        VALUES (?, ?, ?, ?, ?, ?)`, electionID, name, tokens, areVotersKnown, maxVoters, expiresAt)
+	if err != nil {
+		return "", err
+	}
+
+	stmt, err := tx.Prepare(`
+        INSERT INTO choices (text, election_id)
+        VALUES (?, ?)`)
+	if err != nil {
+		return "", err
+	}
+	defer stmt.Close()
+
+	for _, choice := range choices {
+		_, err = stmt.Exec(choice, electionID)
+		if err != nil {
+			return "", err
+		}
+	}
+
+	if err = tx.Commit(); err != nil {
+		return "0", err
+	}
+
+	return electionID.String(), nil
+}
+
+func (e *ElectionModel) GetById(id string) (*Election, error) {
+	query := `
+		SELECT id, name, tokens, are_voters_known, max_voters, created_at, expires_at
+		FROM elections
+		WHERE id = ?
+	`
+
+	row := e.DB.QueryRow(query, id)
+
+	election := &Election{}
+
+	err := row.Scan(&election.ID, &election.Name, &election.Tokens, &election.AreVotersKnown, &election.MaxVoters, &election.CreatedAt, &election.ExpiresAt)
+	if err != nil {
+		return nil, err
+	}
+
+	// Retrieve choices for the election
+	queryChoices := `
+		SELECT text
+		FROM choices
+		WHERE election_id = ?
+	`
+
+	rows, err := e.DB.Query(queryChoices, id)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var choice string
+		if err := rows.Scan(&choice); err != nil {
+			return nil, err
+		}
+		election.Choices = append(election.Choices, choice)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return election, nil
 }

internal/models/voters.go

@@ -0,0 +1,104 @@
+package models
+
+import (
+	"database/sql"
+	"errors"
+)
+
+type VoterModelInterface interface {
+	InsertMultiple(identities []string, electionID string) ([]int, error)
+	CountByElection(electionID string) (int, error)
+	Exists(voterIdentity string, electionID string) (bool, error)
+}
+
+type VoterModel struct {
+	DB *sql.DB
+}
+
+func (v *VoterModel) InsertMultiple(identities []string, electionID string) ([]int, error) {
+	tx, err := v.DB.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+
+	stmt, err := tx.Prepare(`
+        INSERT INTO voters (identity, election_id)
+        VALUES (?, ?)`)
+	if err != nil {
+		return nil, err
+	}
+	defer stmt.Close()
+
+	voterIDs := make([]int, 0, len(identities))
+
+	for _, identity := range identities {
+		result, err := stmt.Exec(identity, electionID)
+		if err != nil {
+			return nil, err
+		}
+
+		voterID, err := result.LastInsertId()
+		if err != nil {
+			return nil, err
+		}
+
+		voterIDs = append(voterIDs, int(voterID))
+	}
+
+	if err = tx.Commit(); err != nil {
+		return nil, err
+	}
+
+	return voterIDs, nil
+}
+
+func (v *VoterModel) CountByElection(electionID string) (int, error) {
+	// use a transaction to prevent race conditions
+	tx, err := v.DB.Begin()
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback()
+
+	query := `
+		SELECT COUNT(identity)
+		FROM voters
+		WHERE election_id = ?
+		GROUP BY election_id;
+	`
+
+	row := tx.QueryRow(query, electionID)
+
+	var voterCount int
+
+	err = row.Scan(&voterCount)
+	if err != nil {
+		return 0, err
+	}
+
+	tx.Commit()
+
+	return voterCount, nil
+}
+
+func (v *VoterModel) Exists(voterIdentity string, electionID string) (bool, error) {
+	query := `
+		SELECT EXISTS (
+			SELECT 1
+			FROM voters
+			WHERE identity = ? AND election_id = ?
+		)
+	`
+
+	var exists bool
+
+	err := v.DB.QueryRow(query, voterIdentity, electionID).Scan(&exists)
+	if err != nil {
+		if errors.Is(sql.ErrNoRows, err) {
+			return false, nil
+		}
+		return false, err
+	}
+	return exists, nil
+}

internal/models/votes.go

@@ -0,0 +1,107 @@
+package models
+
+import (
+	"database/sql"
+	"errors"
+	"time"
+)
+
+type VoteModelInterface interface {
+	Insert(voterIdentity string, electionId string, choiceText string, tokens int) (int, error)
+	Exists(voterIdentity string, electionID string) (bool, error)
+	GetByElection(electionID string) (*[]Vote, error)
+}
+
+type VoteModel struct {
+	DB *sql.DB
+}
+
+type Vote struct {
+	VoterIdentity string
+	ElectionID    string
+	ChoiceText    string
+	Tokens        int
+	CreatedAt     time.Time
+}
+
+func (v *VoteModel) Insert(voterIdentity string, electionId string, choiceText string, tokens int) (int, error) {
+	tx, err := v.DB.Begin()
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback()
+
+	result, err := tx.Exec(`
+        INSERT INTO votes (voter_identity, election_id, choice_text, tokens)
+        VALUES (?, ?, ?, ?)`,
+		voterIdentity, electionId, choiceText, tokens)
+	if err != nil {
+		return 0, err
+	}
+
+	if err = tx.Commit(); err != nil {
+		return 0, err
+	}
+
+	voteId, err := result.LastInsertId()
+	return int(voteId), nil
+}
+
+func (v *VoteModel) Exists(voterIdentity string, electionID string) (bool, error) {
+	var exists bool
+	query := `
+		SELECT EXISTS (
+			SELECT 1
+			FROM votes
+			WHERE voter_identity = ? AND election_id = ?
+		)
+	`
+	err := v.DB.QueryRow(query, voterIdentity, electionID).Scan(&exists)
+	if err != nil {
+		if errors.Is(sql.ErrNoRows, err) {
+			return false, nil
+		}
+		return false, err
+	}
+	return exists, nil
+}
+
+func (v *VoteModel) GetByElection(electionID string) (*[]Vote, error) {
+	query := `
+		SELECT voter_identity, election_id, choice_text, tokens, created_at
+		FROM votes
+		WHERE election_id = ?
+	`
+
+	rows, err := v.DB.Query(query, electionID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var votes []Vote
+	for rows.Next() {
+		var vote Vote
+		err := rows.Scan(
+			&vote.VoterIdentity,
+			&vote.ElectionID,
+			&vote.ChoiceText,
+			&vote.Tokens,
+			&vote.CreatedAt,
+		)
+		if err != nil {
+			return nil, err
+		}
+		votes = append(votes, vote)
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, err
+	}
+
+	if len(votes) == 0 {
+		return nil, sql.ErrNoRows
+	}
+
+	return &votes, nil
+}

internal/validator/validator.go

@@ -36,6 +36,10 @@ func (v *Validator) CheckField(ok bool, key, message string) {
 	}
 }
 
+func Blank(value string) bool {
+	return strings.TrimSpace(value) == ""
+}
+
 func NotBlank(value string) bool {
 	return strings.TrimSpace(value) != ""
 }
@@ -60,6 +64,27 @@ func GreaterThan(value int, n int) bool {
 	return value > n
 }
 
+func LesserThan(value int, n int) bool {
+	return value < n
+}
+
+func GreaterThanOrEquals(value int, n int) bool {
+	return value >= n
+}
+
 func After(value time.Time, n time.Time) bool {
 	return value.After(n)
 }
+
+func UniqueValues[T comparable](values []T) bool {
+	seen := make(map[T]bool)
+
+	for _, value := range values {
+		if seen[value] {
+			return false
+		}
+		seen[value] = true
+	}
+
+	return true
+}

ui/create-election.html

@@ -0,0 +1,224 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Create New Election - qv</title>
+    <script src="/static/js/tailwind.min.js"></script>
+    <script src="/static/js/alpine.min.js" defer></script>
+</head>
+<body class="bg-gray-100 font-sans leading-normal tracking-normal">
+<div x-data="electionForm" class="container mx-auto p-6 bg-white rounded-lg shadow-lg">
+    <main>
+        <h1 class="text-3xl font-bold mb-6">Create New Election</h1>
+        <form @submit.prevent="createElection" class="space-y-6">
+
+            <div>
+                <label for="name" class="block text-sm font-medium text-gray-700">Election Name</label>
+                <input type="text" id="name" x-model="election.name" required
+                       class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+            </div>
+
+            <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+                <div>
+                    <label for="tokens" class="block text-sm font-medium text-gray-700">Tokens per Voter</label>
+                    <input type="number" id="tokens" x-model.number="election.tokens" min="1" required
+                           class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                </div>
+
+                <div>
+                    <label for="areVotersKnown" class="block text-sm font-medium text-gray-700">Voter Access</label>
+                    <select id="areVotersKnown" x-model="election.areVotersKnown" required
+                            @change="election.areVotersKnown = JSON.parse(election.areVotersKnown)"
+                            class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                        <option :value=true>Known voters only</option>
+                        <option :value=false>Open to anyone</option>
+                    </select>
+                    <p class="text-sm text-gray-500 mt-1">Known voters only = codes will be generated for distribution.</p>
+                </div>
+            </div>
+
+            <div>
+                <label for="maxVoters" class="block text-sm font-medium text-gray-700">Maximum Number of Voters</label>
+                <input type="number" id="maxVoters" x-model.number="election.maxVoters"
+                       class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                <p class="text-sm text-gray-500">0 = unlimited</p>
+                <template x-if="election.areVotersKnown && election.maxVoters <= 0">
+                    <span class="text-red-500 text-sm">Maximum number of voters must be greater than 0 if voters are known.</span>
+                </template>
+            </div>
+
+            <div>
+                <label for="expiresAt" class="block text-sm font-medium text-gray-700">Expiration Date</label>
+                <input type="datetime-local" id="expiresAt" x-model="election.expiresAt" required
+                       class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+            </div>
+
+            <div>
+                <label class="block text-sm font-medium text-gray-700">Choices</label>
+                <div class="space-y-2 mt-2">
+                    <template x-for="(choice, index) in election.choices" :key="index">
+                        <div class="flex space-x-2 items-center">
+                            <input type="text" x-model="election.choices[index]" required
+                                   class="block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            <button type="button" class="text-red-500 hover:text-red-700"
+                                    @click="removeChoice(index)" x-show="election.choices.length > 2">×</button>
+                        </div>
+                    </template>
+                </div>
+                <button type="button" @click="addChoice"
+                        class="mt-3 inline-flex items-center px-4 py-2 bg-indigo-600 border border-transparent rounded-md font-medium text-white hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500">
+                    Add Another Choice
+                </button>
+            </div>
+
+            <div>
+                <button type="submit"
+                        class="w-full inline-flex justify-center py-2 px-4 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500">
+                    Create Election
+                </button>
+            </div>
+
+        </form>
+
+        <div x-show="errorMessage || Object.keys(errorDetails).length > 0" class="mt-6 bg-red-100 p-4 rounded-md">
+            <h2 class="text-red-700 font-bold" x-text="errorMessage"></h2>
+            <ul class="text-red-600 mt-2 space-y-1">
+                <template x-for="(message, field) in errorDetails" :key="field">
+                    <li><strong x-text="field"></strong>: <span x-text="message"></span></li>
+                </template>
+            </ul>
+        </div>
+
+        <template x-if="createdElectionId != ''">
+            <div class="mt-6 bg-green-100 p-4 rounded-md">
+                <h2 class="text-green-700 font-bold">Election Created Successfully</h2>
+                <p class="mt-2">
+                    <a
+                            :href="`/election/${createdElectionId}`"
+                            class="text-blue-600 underline hover:text-blue-800"
+                            target="_blank">
+                        View election
+                    </a>
+                </p>
+                <p>
+                    <a
+                            :href="`/election/${createdElectionId}/results`"
+                            class="text-blue-600 underline hover:text-blue-800"
+                            target="_blank">
+                        View results
+                    </a>
+                </p>
+            </div>
+        </template>
+
+        <template x-if="voterIdentities.length > 0">
+            <div class="voter-codes">
+                <h2 class="text-2xl font-semibold mb-4">Voter Access Codes</h2>
+                <div class="codes-container">
+                    <button @click="copyAllCodes" class="copy-all-btn bg-indigo-600 text-white py-2 px-4 rounded-md font-medium hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 mb-4">
+                        Copy All Codes
+                    </button>
+                    <div class="codes-list">
+                        <template x-for="(code, index) in voterIdentities" :key="index">
+                            <div class="code-item flex items-center space-x-3 mb-2">
+                                <span class="code-number text-gray-700 font-medium" x-text="index + 1"></span>.
+                                <span class="code-text text-gray-900" x-text="code"></span>
+                                <button @click="copyCode(code)" class="copy-btn bg-indigo-600 text-white text-sm py-1 px-3 rounded-md hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500">
+                                    Copy
+                                </button>
+                            </div>
+                        </template>
+                    </div>
+                </div>
+            </div>
+        </template>
+    </main>
+</div>
+
+<script>
+    document.addEventListener("alpine:init", () => {
+        Alpine.data("electionForm", () => ({
+            election: {
+                name: "",
+                tokens: 100,
+                areVotersKnown: true,
+                maxVoters: 0,
+                expiresAt: "",
+                choices: ["", ""]
+            },
+            createdElectionId: "",
+            errorMessage: "",
+            errorDetails: {},
+            voterIdentities: [],
+
+            addChoice() {
+                this.election.choices.push("");
+            },
+
+            removeChoice(index) {
+                this.election.choices.splice(index, 1);
+            },
+
+            async createElection() {
+                this.errorMessage = "";
+                this.errorDetails = {};
+                this.createdElectionId = "";
+                this.voterIdentities = [];
+
+                const payload = {
+                    ...this.election,
+                    expiresAt: this.election.expiresAt + ":00Z",
+                    choices: this.election.choices.filter(choice => choice.trim() !== "")
+                };
+
+                try {
+                    const response = await fetch("/api/election", {
+                        method: "POST",
+                        headers: {
+                            "Content-Type": "application/json"
+                        },
+                        body: JSON.stringify(payload)
+                    });
+
+                    if (!response.ok) {
+                        const errorData = await response.json();
+                        this.errorMessage = errorData.message || "An error occurred.";
+                        this.errorDetails = errorData.details?.fields || {};
+                        return;
+                    }
+
+                    const locationHeader = response.headers.get("Location");
+                    this.createdElectionId = locationHeader.replace("/election/", "");
+
+                    const contentType = response.headers.get("Content-Type") ?? "";
+                    if (contentType.includes("application/json")) {
+                        const data = await response.json();
+                        this.voterIdentities = data.voterIdentities;
+                    }
+                } catch (error) {
+                    console.log(error);
+                    this.errorMessage = "Failed to create election.";
+                }
+            },
+
+            copyCode(code) {
+                navigator.clipboard.writeText(code).then(() => {
+                    alert("Code copied to clipboard!");
+                }).catch(err => {
+                    console.error("Failed to copy code: ", err);
+                });
+            },
+
+            async copyAllCodes() {
+                const allCodes = this.voterIdentities.join("\n");
+                await navigator.clipboard.writeText(allCodes)
+                .catch(err => {
+                    console.error("Failed to copy all codes: ", err);
+                });
+            }
+        }));
+    });
+</script>
+</body>
+</html>

ui/election-results.html

@@ -0,0 +1,145 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Election Results - qv</title>
+    <script src="/static/js/tailwind.min.js"></script>
+    <script src="/static/js/chart.umd.js"></script>
+    <script src="/static/js/alpine.min.js" defer></script>
+</head>
+<body class="bg-gray-100 font-sans leading-normal tracking-normal">
+<div x-data="resultsPage" class="container mx-auto p-6 bg-white rounded-lg shadow-lg">
+    <main>
+        <h1 class="text-3xl font-bold mb-6">Election Results</h1>
+
+        <div x-show="error" class="bg-red-100 p-4 rounded-md text-red-700">
+            <p x-text="error"></p>
+        </div>
+
+        <template x-if="!error">
+            <div class="space-y-6">
+                <!-- Chart Container -->
+                <div class="bg-white p-6 rounded-lg shadow">
+                    <h2 class="text-xl font-semibold mb-4">Vote Distribution</h2>
+                    <div class="h-96 w-full">
+                        <canvas id="resultsChart"></canvas>
+                    </div>
+                </div>
+
+                <!-- Detailed Results -->
+                <div class="bg-white p-6 rounded-lg shadow">
+                    <h3 class="text-lg font-semibold mb-4">Detailed Results</h3>
+                    <div class="space-y-2">
+                        <template x-for="(result, index) in results" :key="index">
+                            <div class="flex justify-between border-b pb-2">
+                                <div class="flex items-center">
+                                    <div class="w-4 h-4 rounded mr-2" :style="{ backgroundColor: getColor(index) }"></div>
+                                    <span class="font-medium" x-text="result.choice"></span>
+                                </div>
+                                <span class="text-gray-600">
+                                    <span x-text="result.votes"></span> votes
+                                    (<span x-text="getPercentage(result.votes)"></span>%)
+                                </span>
+                            </div>
+                        </template>
+                    </div>
+                </div>
+            </div>
+        </template>
+    </main>
+</div>
+
+<script>
+    document.addEventListener('alpine:init', () => {
+        Alpine.data('resultsPage', () => ({
+            results: [],
+            error: '',
+            chart: null,
+            colors: [
+                '#4f46e5', // Indigo (primary)
+                '#2563eb', // Blue
+                '#7c3aed', // Violet
+                '#db2777', // Pink
+                '#dc2626', // Red
+            ],
+
+            getColor(index) {
+                return this.colors[index % this.colors.length];
+            },
+
+            getPercentage(votes) {
+                const total = this.results.reduce((sum, result) => sum + result.votes, 0);
+                if (total === 0) return '0.0';
+                return ((votes / total) * 100).toFixed(1);
+            },
+
+            async init() {
+                await this.fetchResults();
+                this.initChart();
+            },
+
+            async fetchResults() {
+                const electionId = window.location.pathname.split("/")[2];
+                try {
+                    const response = await fetch(`/api/election/${electionId}/results`);
+                    if (!response.ok) throw new Error("Failed to load election results.");
+                    const data = await response.json();
+                    this.results = data.results;
+                } catch (error) {
+                    console.error(error);
+                    this.error = error.message;
+                }
+            },
+
+            initChart() {
+                if (this.error) return;
+
+                const ctx = document.getElementById('resultsChart').getContext('2d');
+
+                // Destroy existing chart if it exists
+                if (this.chart) {
+                    this.chart.destroy();
+                }
+
+                this.chart = new Chart(ctx, {
+                    type: 'doughnut',
+                    data: {
+                        labels: this.results.map(r => r.choice),
+                        datasets: [{
+                            data: this.results.map(r => r.votes),
+                            backgroundColor: this.results.map((_, index) => this.getColor(index)),
+                            borderWidth: 1
+                        }]
+                    },
+                    options: {
+                        responsive: true,
+                        maintainAspectRatio: false,
+                        plugins: {
+                            legend: {
+                                position: 'right',
+                                labels: {
+                                    padding: 20,
+                                    boxWidth: 12,
+                                    boxHeight: 12
+                                }
+                            },
+                            tooltip: {
+                                callbacks: {
+                                    label: (context) => {
+                                        const total = context.dataset.data.reduce((sum, count) => sum + count, 0);
+                                        const percentage = ((context.raw / total) * 100).toFixed(1);
+                                        return `${context.raw} votes (${percentage}%)`;
+                                    }
+                                }
+                            }
+                        },
+                        cutout: '60%'
+                    }
+                });
+            }
+        }));
+    });
+</script>
+</body>
+</html>

ui/election.html

@@ -0,0 +1,126 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Vote in Election - qv</title>
+    <script src="/static/js/tailwind.min.js"></script>
+    <script src="/static/js/alpine.min.js" defer></script>
+</head>
+<body class="bg-gray-100 font-sans leading-normal tracking-normal">
+<div x-data="votePage" class="container mx-auto p-6 bg-white rounded-lg shadow-lg">
+    <main>
+        <h1 class="text-3xl font-bold mb-6" x-text="election.name || 'Loading...'"></h1>
+
+        <form @submit.prevent="submitVote" class="space-y-6">
+            <!-- Code Field -->
+            <template x-if="election.areVotersKnown">
+                <div>
+                    <label for="code" class="block text-sm font-medium text-gray-700">Access Code</label>
+                    <input type="text" id="code" x-model="code" required
+                           class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                </div>
+            </template>
+
+            <!-- Voting Choices -->
+            <template x-if="election.choices.length > 0">
+                <div>
+                    <label class="block text-sm font-medium text-gray-700">Distribute Your Tokens</label>
+                    <div class="space-y-2 mt-2">
+                        <template x-for="(choice, index) in election.choices" :key="index">
+                            <div>
+                                <label class="block text-gray-700" x-text="choice"></label>
+                                <input type="number" min="0"
+                                       x-model.number="votes[index]"
+                                       class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            </div>
+                        </template>
+                        <p class="text-sm text-gray-500 mt-2">Tokens remaining: <span x-text="remainingTokens"></span></p>
+                    </div>
+                </div>
+            </template>
+
+            <!-- No Choices Message -->
+            <template x-if="!election.choices.length">
+                <p class="text-gray-700">No choices available for this election.</p>
+            </template>
+
+            <button type="submit"
+                    :disabled="remainingTokens < 0"
+                    class="w-full inline-flex justify-center py-2 px-4 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50">
+                Submit Vote
+            </button>
+        </form>
+
+        <div x-show="message" class="mt-6 p-4 rounded-md" :class="{'bg-green-100 text-green-700': success, 'bg-red-100 text-red-700': !success}">
+            <p x-text="message"></p>
+        </div>
+    </main>
+</div>
+
+<script>
+    document.addEventListener("alpine:init", () => {
+        Alpine.data("votePage", () => ({
+            election: { name: "", choices: [], tokens: 0, areVotersKnown: false },
+            code: "",
+            votes: [],
+            message: "",
+            success: false,
+
+            get remainingTokens() {
+                return this.election.tokens - this.votes.reduce((sum, v) => sum + v, 0);
+            },
+
+            async init() {
+                const electionId = window.location.pathname.split("/").pop();
+                try {
+                    const response = await fetch(`/api/election/${electionId}`);
+                    if (!response.ok) throw new Error("Failed to load election details.");
+                    const data = await response.json();
+                    this.election = data;
+                    this.votes = Array(data.choices.length).fill(0);
+                } catch (error) {
+                    console.error(error);
+                    this.message = "Failed to load election details.";
+                    this.success = false;
+                }
+            },
+
+            async submitVote() {
+                if (this.remainingTokens < 0) {
+                    this.message = "You have exceeded the number of available tokens.";
+                    this.success = false;
+                    return;
+                }
+
+                const electionId = window.location.pathname.split("/").pop();
+                const payload = {
+                    voterIdentity: this.election.areVotersKnown ? this.code : null,
+                    choices: this.election.choices.map((choice, index) => ({
+                        choiceText: choice,
+                        tokens: this.votes[index] || 0,
+                    })),
+                };
+
+                try {
+                    const response = await fetch(`/api/election/${electionId}/votes`, {
+                        method: "POST",
+                        headers: { "Content-Type": "application/json" },
+                        body: JSON.stringify(payload),
+                    });
+                    if (!response.ok) {
+                        res = await response.json();
+                        throw new Error(res.message);
+                    }
+                    this.message = "Vote submitted successfully!";
+                    this.success = true;
+                } catch (error) {
+                    this.message = error.message;
+                    this.success = false;
+                }
+            }
+        }));
+    });
+</script>
+</body>
+</html>

ui/index.html

@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>qv</title>
+  <script src="/static/js/tailwind.min.js"></script>
+</head>
+<body class="bg-gray-100 text-gray-900">
+  <div class="min-h-screen flex flex-col items-center justify-center">
+    <header class="text-center mb-8">
+      <h1 class="text-4xl font-bold mb-4">Quadratic Voting</h1>
+      <p class="text-lg text-gray-600">Start your journey by creating a new election.</p>
+    </header>
+
+    <main class="text-center">
+      <a href="/election/create"
+         class="bg-blue-600 text-white text-lg font-semibold px-6 py-3 rounded-lg hover:bg-blue-700">
+        Create Election
+      </a>
+    </main>
+
+    <footer class="mt-12 text-center text-gray-600">
+      <a href="https://code.dlmw.ch/dlmw/qv" target="_blank">See the source code</a>
+    </footer>
+  </div>
+</body>
+</html>

ui/ui.go

@@ -0,0 +1,6 @@
+package ui
+
+import "embed"
+
+//go:embed *.html static
+var Files embed.FS