// clip-sync — bidirectional LAN clipboard synchronization daemon.
//
// Usage:
//
//	clip-sync [--config path]
//
// clip-sync polls the local clipboard every 500 ms and broadcasts any new
// text content to all configured peers via HTTP POST /clip. It also runs an
// HTTP server on :9137 (configurable) to receive clips from peers and write
// them to the local clipboard.
//
// Configuration is read from ~/.config/clip-sync/peers.toml (TOML format).
// Environment variables CLIP_SYNC_PORT and CLIP_SYNC_POLL_MS override
// the corresponding config values.
package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"os"
	"os/signal"
	"syscall"

	"git.dracodev.net/Projets/clip-sync/internal/config"
	"git.dracodev.net/Projets/clip-sync/internal/daemon"
)

var version = "dev"

func main() {
	showVersion := flag.Bool("version", false, "print version and exit")
	flag.Parse()

	if *showVersion {
		fmt.Printf("clip-sync %s\n", version)
		return
	}

	log.SetFlags(log.LstdFlags | log.Lshortfile)
	log.SetPrefix("")

	cfg, err := config.Load()
	if err != nil {
		log.Fatalf("clip-sync: config: %v", err)
	}

	d, err := daemon.New(cfg)
	if err != nil {
		log.Fatalf("clip-sync: init: %v", err)
	}

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// Handle graceful shutdown on SIGINT / SIGTERM.
	sigCh := make(chan os.Signal, 1)
	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		sig := <-sigCh
		log.Printf("clip-sync: received %v, shutting down...", sig)
		cancel()
	}()

	if err := d.Run(ctx); err != nil && err != context.Canceled {
		log.Fatalf("clip-sync: %v", err)
	}

	log.Println("clip-sync: stopped")
}