serve

var (

	// Command is the serve command.
	Command = &cobra.Command{
		Use:                "serve",
		Short:              "Start the server",
		Args:               cobra.NoArgs,
		PersistentPreRunE:  cmd.InitBackendContext,
		PersistentPostRunE: cmd.CloseDBContext,
		RunE: func(c *cobra.Command, _ []string) error {
			ctx := c.Context()
			cfg := config.DefaultConfig()
			if cfg.Exist() {
				if err := cfg.ParseFile(); err != nil {
					return fmt.Errorf("parse config file: %w", err)
				}
			} else {
				if err := cfg.WriteConfig(); err != nil {
					return fmt.Errorf("write config file: %w", err)
				}
			}

			if err := cfg.ParseEnv(); err != nil {
				return fmt.Errorf("parse environment variables: %w", err)
			}

			customHooksPath := filepath.Join(cfg.DataPath, "hooks")
			if _, err := os.Stat(customHooksPath); err != nil && os.IsNotExist(err) {
				os.MkdirAll(customHooksPath, os.ModePerm)

				hookPath := filepath.Join(customHooksPath, "update.sample")

				if err := os.WriteFile(hookPath, []byte(updateHookExample), 0o744); err != nil {
					return fmt.Errorf("failed to generate update hook example: %w", err)
				}
			}

			logPath := filepath.Join(cfg.DataPath, "log")
			if _, err := os.Stat(logPath); err != nil && os.IsNotExist(err) {
				os.MkdirAll(logPath, os.ModePerm)
			}

			db := db.FromContext(ctx)
			if err := migrate.Migrate(ctx, db); err != nil {
				return fmt.Errorf("migration error: %w", err)
			}

			s, err := NewServer(ctx)
			if err != nil {
				return fmt.Errorf("start server: %w", err)
			}

			if syncHooks {
				be := backend.FromContext(ctx)
				if err := cmd.InitializeHooks(ctx, cfg, be); err != nil {
					return fmt.Errorf("initialize hooks: %w", err)
				}
			}

			done := make(chan os.Signal, 1)
			lch := make(chan error, 1)
			go func() {
				defer close(lch)
				defer close(done)
				lch <- s.Start()
			}()

			signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
			<-done

			ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
			defer cancel()
			if err := s.Shutdown(ctx); err != nil {
				return err
			}

			return <-lch
		},
	}
)