package main

import (
	"context"
	"log"
	"net/http"
	"os/signal"
	"syscall"
	"time"

	"bookra/apps/backend/internal/api"
	"bookra/apps/backend/internal/config"
	"bookra/apps/backend/internal/db"

	sentry "github.com/getsentry/sentry-go"
)

func initSentry(cfg config.Config) {
	if cfg.SentryDSN == "" {
		log.Println("Sentry DSN not configured - skipping initialization")
		return
	}

	err := sentry.Init(sentry.ClientOptions{
		Dsn:         cfg.SentryDSN,
		Environment: cfg.Environment,
		Release:     "bookra@1.0.0",
		// Set TracesSampleRate to 1.0 to capture 100% of transactions for testing
		TracesSampleRate: 1.0,
	})
	if err != nil {
		log.Fatalf("Sentry initialization failed: %v", err)
	}
	log.Println("Sentry initialized")
}

func main() {
	cfg, err := config.Load()
	if err != nil {
		log.Fatalf("load config: %v", err)
	}

	initSentry(cfg)

	pools, err := db.NewPools(cfg)
	if err != nil {
		log.Fatalf("create database pools: %v", err)
	}
	defer pools.Close()

	server, err := api.NewServer(cfg, pools)
	if err != nil {
		log.Fatalf("create server: %v", err)
	}
	defer server.Close()

	// Start background job for trial ending emails
	go server.StartBackgroundJobs()

	httpServer := &http.Server{
		Addr:              ":" + cfg.Port,
		Handler:           server.Handler(),
		ReadHeaderTimeout: 5 * time.Second,
	}

	go func() {
		log.Printf("bookra api listening on :%s (%s)", cfg.Port, cfg.Environment)
		if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("listen: %v", err)
		}
	}()

	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGTERM, syscall.SIGINT)
	defer stop()
	<-ctx.Done()

	shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	if err := httpServer.Shutdown(shutdownCtx); err != nil {
		log.Printf("shutdown error: %v", err)
	}
}