package main

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

	"person-home/internal/db"
	"person-home/internal/router"
)

func main() {
	addr := envOrDefault("ADDR", ":8882")
	dbPath := envOrDefault("DB_PATH", "data/person-home.db")
	uploadDir := envOrDefault("UPLOAD_DIR", "uploads")
	jwtSecretStr := envOrDefault("JWT_SECRET", "change-me-in-production")

	dbase, err := db.Open(dbPath)
	if err != nil {
		slog.Error("open database", "error", err)
		os.Exit(1)
	}
	defer dbase.Close()

	handler := router.New(dbase, []byte(jwtSecretStr), uploadDir, frontendFS())

	server := &http.Server{
		Addr:         addr,
		Handler:      handler,
		ReadTimeout:  15 * time.Second,
		WriteTimeout: 15 * time.Second,
		IdleTimeout:  60 * time.Second,
	}

	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		slog.Info("server starting", "addr", addr)
		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			slog.Error("server error", "error", err)
			os.Exit(1)
		}
	}()

	<-stop
	slog.Info("shutting down...")
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	server.Shutdown(ctx)
	slog.Info("stopped")
}

func envOrDefault(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}