feat: add graceful shutdown on SIGINT/SIGTERM

.gitignore

@@ -4,6 +4,7 @@ data/
 *.db-shm
 *.db-wal
 apocapoc-api
+/api
 dist/
 bin/
 .internal-notes/

cmd/api/main.go

@@ -1,11 +1,15 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"net/http"
+	"os"
+	"os/signal"
 	"strconv"
 	"strings"
+	"syscall"
 	"time"
 
 	"apocapoc-api/internal/application/commands"
@@ -155,11 +159,32 @@ func main() {
 	router := httpInfra.NewRouter(cfg.AppURL, habitHandlers, authHandlers, statsHandlers, healthHandlers, userHandlers, exportHandlers, syncHandlers, jwtService, translator)
 
 	addr := fmt.Sprintf("0.0.0.0:%s", cfg.Port)
-	logger.Info().Str("address", addr).Msg("Server starting")
-
-	if err := http.ListenAndServe(addr, router); err != nil {
-		logger.Fatal().Err(err).Msg("Server failed")
+	server := &http.Server{
+		Addr:    addr,
+		Handler: router,
 	}
+
+	shutdown := make(chan os.Signal, 1)
+	signal.Notify(shutdown, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		logger.Info().Str("address", addr).Msg("Server starting")
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			logger.Fatal().Err(err).Msg("Server failed")
+		}
+	}()
+
+	<-shutdown
+	logger.Info().Msg("Shutting down gracefully...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	if err := server.Shutdown(ctx); err != nil {
+		logger.Fatal().Err(err).Msg("Server forced to shutdown")
+	}
+
+	logger.Info().Msg("Server stopped")
 }
 
 func parseJWTExpiry(expiry string) (int, error) {

internal/application/commands/apply_sync_batch_test.go

@@ -13,9 +13,9 @@ import (
 )
 
 type mockHabitRepoForBatch struct {
-	habits       map[string]*entities.Habit
-	createFunc   func(ctx context.Context, habit *entities.Habit) error
-	updateFunc   func(ctx context.Context, habit *entities.Habit) error
+	habits         map[string]*entities.Habit
+	createFunc     func(ctx context.Context, habit *entities.Habit) error
+	updateFunc     func(ctx context.Context, habit *entities.Habit) error
 	softDeleteFunc func(ctx context.Context, id string) error
 }
 

internal/infrastructure/http/dto.go

@@ -124,12 +124,12 @@ type SyncHabitDTO struct {
 }
 
 type SyncHabitEntryDTO struct {
-	ID            string     `json:"id"`
-	HabitID       string     `json:"habit_id"`
-	ScheduledDate time.Time  `json:"scheduled_date"`
-	CompletedAt   time.Time  `json:"completed_at"`
-	Value         *float64   `json:"value,omitempty"`
-	UpdatedAt     time.Time  `json:"updated_at"`
+	ID            string    `json:"id"`
+	HabitID       string    `json:"habit_id"`
+	ScheduledDate time.Time `json:"scheduled_date"`
+	CompletedAt   time.Time `json:"completed_at"`
+	Value         *float64  `json:"value,omitempty"`
+	UpdatedAt     time.Time `json:"updated_at"`
 }
 
 type HabitChangesDTO struct {

internal/infrastructure/http/sync_handlers.go

@@ -13,9 +13,9 @@ import (
 )
 
 type SyncHandlers struct {
-	getSyncChangesHandler  *queries.GetSyncChangesHandler
-	applySyncBatchHandler  *commands.ApplySyncBatchHandler
-	translator             *i18n.Translator
+	getSyncChangesHandler *queries.GetSyncChangesHandler
+	applySyncBatchHandler *commands.ApplySyncBatchHandler
+	translator            *i18n.Translator
 }
 
 func NewSyncHandlers(