package main

import (
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/joho/godotenv"

	"cycling-discord-bot/bot"
	"cycling-discord-bot/db"
)

func main() {
	_ = godotenv.Load()

	token := mustEnv("DISCORD_TOKEN")
	dbURL := mustEnv("DATABASE_URL")
	guildID := getEnv("GUILD_ID", "") // empty = global commands (takes ~1h to propagate)

	database, err := db.Open(dbURL)
	if err != nil {
		log.Fatalf("open database: %v", err)
	}
	defer database.Close()

	b, err := bot.New(token, database, guildID)
	if err != nil {
		log.Fatalf("create bot: %v", err)
	}

	if err := b.Open(); err != nil {
		log.Fatalf("open connection: %v", err)
	}
	defer b.Close()

	// Give the session a moment to identify before registering commands
	time.Sleep(500 * time.Millisecond)

	if err := b.RegisterCommands(); err != nil {
		log.Fatalf("register commands: %v", err)
	}

	log.Println("bot is running — press Ctrl+C to stop")
	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
	<-stop
	log.Println("shutting down")
}

func mustEnv(key string) string {
	v := os.Getenv(key)
	if v == "" {
		log.Fatalf("missing required env var: %s", key)
	}
	return v
}

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