Add OpenAPI/Swagger documentation

- Add Swagger dependencies to go.mod
- Annotate all API endpoints with Swagger comments
- Add Swagger UI at /api/v1/docs endpoint
- Auto-generate Swagger docs in Dockerfile build
- Update README with API documentation link
This commit is contained in:
2025-11-26 18:38:26 +01:00
parent 0019a4a095
commit 52ecc2fab5
7 changed files with 188 additions and 8 deletions
+2
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@@ -8,6 +8,8 @@ COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN go run github.com/swaggo/swag/cmd/swag@latest init -g cmd/api/main.go
RUN go mod tidy
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o apocapoc-api cmd/api/main.go
FROM alpine:latest
+1 -1
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@@ -79,7 +79,7 @@ go run cmd/api/main.go
## API Documentation
Once running, visit `http://localhost:8080/api/v1/docs` for interactive API documentation.
Once running, visit `http://localhost:8080/api/v1/docs` for interactive Swagger documentation.
## Architecture
+19
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@@ -15,6 +15,25 @@ import (
"apocapoc-api/internal/infrastructure/persistence/sqlite"
)
// @title Apocapoc API
// @version 1.0
// @description Self-hosted habit tracking service
// @termsOfService http://swagger.io/terms/
// @contact.name API Support
// @contact.url https://github.com/davidfolch/apocapoc-api
// @license.name MIT
// @license.url https://opensource.org/licenses/MIT
// @host localhost:8080
// @BasePath /api/v1
// @securityDefinitions.apikey BearerAuth
// @in header
// @name Authorization
// @description Type "Bearer" followed by a space and JWT token.
func main() {
cfg, err := config.Load()
if err != nil {
+9 -7
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@@ -5,11 +5,13 @@ go 1.24.0
toolchain go1.24.10
require (
github.com/go-chi/chi/v5 v5.2.3 // indirect
github.com/go-chi/cors v1.2.2 // indirect
github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/joho/godotenv v1.5.1 // indirect
github.com/mattn/go-sqlite3 v1.14.32 // indirect
golang.org/x/crypto v0.45.0 // indirect
github.com/go-chi/chi/v5 v5.2.3
github.com/go-chi/cors v1.2.2
github.com/golang-jwt/jwt/v5 v5.3.0
github.com/google/uuid v1.6.0
github.com/joho/godotenv v1.5.1
github.com/mattn/go-sqlite3 v1.14.32
github.com/swaggo/http-swagger v1.3.4
github.com/swaggo/swag v1.16.4
golang.org/x/crypto v0.45.0
)
@@ -44,6 +44,18 @@ type AuthResponse struct {
UserID string `json:"user_id"`
}
// Register godoc
// @Summary Register a new user
// @Description Create a new user account
// @Tags auth
// @Accept json
// @Produce json
// @Param request body RegisterRequest true "Registration data"
// @Success 201 {object} AuthResponse
// @Failure 400 {object} ErrorResponse
// @Failure 409 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /auth/register [post]
func (h *AuthHandlers) Register(w http.ResponseWriter, r *http.Request) {
var req RegisterRequest
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
@@ -83,6 +95,18 @@ func (h *AuthHandlers) Register(w http.ResponseWriter, r *http.Request) {
})
}
// Login godoc
// @Summary Login user
// @Description Authenticate user and get JWT token
// @Tags auth
// @Accept json
// @Produce json
// @Param request body LoginRequest true "Login credentials"
// @Success 200 {object} AuthResponse
// @Failure 400 {object} ErrorResponse
// @Failure 401 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /auth/login [post]
func (h *AuthHandlers) Login(w http.ResponseWriter, r *http.Request) {
var req LoginRequest
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
@@ -49,6 +49,19 @@ func NewHabitHandlers(
}
}
// CreateHabit godoc
// @Summary Create a new habit
// @Description Create a new habit for the authenticated user
// @Tags habits
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param request body CreateHabitRequest true "Habit data"
// @Success 201 {object} map[string]string
// @Failure 400 {object} ErrorResponse
// @Failure 401 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits [post]
func (h *HabitHandlers) CreateHabit(w http.ResponseWriter, r *http.Request) {
var req CreateHabitRequest
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
@@ -87,6 +100,16 @@ func (h *HabitHandlers) CreateHabit(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusCreated, map[string]string{"id": habitID})
}
// GetUserHabits godoc
// @Summary Get all user habits
// @Description Get all active habits for the authenticated user
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Success 200 {array} UserHabitResponse
// @Failure 401 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits [get]
func (h *HabitHandlers) GetUserHabits(w http.ResponseWriter, r *http.Request) {
userID, ok := GetUserIDFromContext(r.Context())
if !ok {
@@ -120,6 +143,19 @@ func (h *HabitHandlers) GetUserHabits(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusOK, response)
}
// GetHabitByID godoc
// @Summary Get habit by ID
// @Description Get a specific habit by ID
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Success 200 {object} UserHabitResponse
// @Failure 401 {object} ErrorResponse
// @Failure 403 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id} [get]
func (h *HabitHandlers) GetHabitByID(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
@@ -161,6 +197,22 @@ func (h *HabitHandlers) GetHabitByID(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusOK, response)
}
// UpdateHabit godoc
// @Summary Update habit
// @Description Update an existing habit
// @Tags habits
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Param request body UpdateHabitRequest true "Update data"
// @Success 200 {object} map[string]string
// @Failure 400 {object} ErrorResponse
// @Failure 401 {object} ErrorResponse
// @Failure 403 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id} [put]
func (h *HabitHandlers) UpdateHabit(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
@@ -207,6 +259,19 @@ func (h *HabitHandlers) UpdateHabit(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusOK, map[string]string{"status": "updated"})
}
// ArchiveHabit godoc
// @Summary Archive habit
// @Description Archive (soft delete) a habit
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Success 200 {object} map[string]string
// @Failure 401 {object} ErrorResponse
// @Failure 403 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id} [delete]
func (h *HabitHandlers) ArchiveHabit(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
@@ -237,6 +302,24 @@ func (h *HabitHandlers) ArchiveHabit(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusOK, map[string]string{"status": "archived"})
}
// GetHabitEntries godoc
// @Summary Get habit entries
// @Description Get entries (completion history) for a habit with optional date filtering and pagination
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Param from query string false "Start date (YYYY-MM-DD)"
// @Param to query string false "End date (YYYY-MM-DD)"
// @Param page query int false "Page number"
// @Param limit query int false "Page size (max 100)"
// @Success 200 {object} HabitEntriesResponse
// @Failure 400 {object} ErrorResponse
// @Failure 401 {object} ErrorResponse
// @Failure 403 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id}/entries [get]
func (h *HabitHandlers) GetHabitEntries(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
@@ -343,6 +426,16 @@ func (h *HabitHandlers) GetHabitEntries(w http.ResponseWriter, r *http.Request)
respondJSON(w, http.StatusOK, response)
}
// GetTodaysHabits godoc
// @Summary Get today's habits
// @Description Get all habits scheduled for today for the authenticated user
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Success 200 {array} TodaysHabitResponse
// @Failure 401 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/today [get]
func (h *HabitHandlers) GetTodaysHabits(w http.ResponseWriter, r *http.Request) {
userID, ok := GetUserIDFromContext(r.Context())
if !ok {
@@ -379,6 +472,21 @@ func (h *HabitHandlers) GetTodaysHabits(w http.ResponseWriter, r *http.Request)
respondJSON(w, http.StatusOK, response)
}
// MarkHabit godoc
// @Summary Mark habit as complete
// @Description Mark a habit as completed for a specific date
// @Tags habits
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Param request body MarkHabitRequest true "Mark data"
// @Success 200 {object} map[string]string
// @Failure 400 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 409 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id}/mark [post]
func (h *HabitHandlers) MarkHabit(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
@@ -416,6 +524,21 @@ func (h *HabitHandlers) MarkHabit(w http.ResponseWriter, r *http.Request) {
respondJSON(w, http.StatusOK, map[string]string{"status": "marked"})
}
// UnmarkHabit godoc
// @Summary Unmark habit
// @Description Delete a habit entry (unmark completion)
// @Tags habits
// @Produce json
// @Security BearerAuth
// @Param id path string true "Habit ID"
// @Param date path string true "Date (YYYY-MM-DD)"
// @Success 200 {object} map[string]string
// @Failure 400 {object} ErrorResponse
// @Failure 401 {object} ErrorResponse
// @Failure 403 {object} ErrorResponse
// @Failure 404 {object} ErrorResponse
// @Failure 500 {object} ErrorResponse
// @Router /habits/{id}/entries/{date} [delete]
func (h *HabitHandlers) UnmarkHabit(w http.ResponseWriter, r *http.Request) {
habitID := chi.URLParam(r, "id")
dateStr := chi.URLParam(r, "date")
+10
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@@ -8,6 +8,9 @@ import (
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/go-chi/cors"
httpSwagger "github.com/swaggo/http-swagger"
_ "apocapoc-api/docs"
)
func NewRouter(corsOrigins string, habitHandlers *HabitHandlers, authHandlers *AuthHandlers, jwtService *auth.JWTService) *chi.Mux {
@@ -22,6 +25,13 @@ func NewRouter(corsOrigins string, habitHandlers *HabitHandlers, authHandlers *A
AllowCredentials: true,
}))
r.Get("/api/v1/docs", func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/api/v1/docs/index.html", http.StatusMovedPermanently)
})
r.Get("/api/v1/docs/*", httpSwagger.Handler(
httpSwagger.URL("/api/v1/docs/doc.json"),
))
r.Get("/api/v1/health", func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Write([]byte(`{"status":"ok"}`))