package main

import (
	"os"
	"time"

	"example.com/m/adapter/backend"
	"example.com/m/bot"
	"example.com/m/handlers"
	"example.com/m/pkg/logger"
	"example.com/m/screens"
	"github.com/NicoNex/echotron/v3"
	"github.com/rs/zerolog/log"
)

func main() {
	logger.Init(logger.Config{
		AppName:       "tgex-bot",
		AppVersion:    "v0.0.1",
		PrettyConsole: true,
	})

	botToken := mustEnv("TELEGRAM__TOKEN")
	loginURL := mustEnv("LOGIN_URL")
	baseURL := os.Getenv("BACKEND__BASE_URL")

	backendClient := backend.New(backend.Config{
		BaseURL:  baseURL,
		LoginURL: loginURL,
	})

	var commandRouter = func(command string) bot.State {
		switch command {
		case "/start":
			return &screens.MainMenu{}
		case "/start login":
			return &screens.Login{}
		}
		panic("Unknown command: " + command)
	}

	newBot := func(chatID int64) echotron.Bot {
		return bot.NewBot(chatID, botToken, commandRouter, backendClient, handlers.HandleGlobalCallback)
	}

	dsp := echotron.NewDispatcher(botToken, newBot)

	log.Info().Msg("bot starting...")

	updateOpts := echotron.UpdateOptions{
		AllowedUpdates: []echotron.UpdateType{
			echotron.MessageUpdate,
			echotron.CallbackQueryUpdate,
			echotron.MyChatMemberUpdate,
			echotron.ChatMemberUpdate,
			echotron.UpdateType("chat_join_request"),
		},
	}

	for {
		if err := dsp.PollOptions(false, updateOpts); err != nil {
			log.Error().Err(err).Msg("dsp.Poll failed, retrying in 5 seconds...")
			time.Sleep(5 * time.Second)
			continue
		}
		break
	}
}

func mustEnv(key string) string {
	value := os.Getenv(key)
	if value == "" {
		log.Fatal().Str("env", key).Msg("missing required environment variable")
	}

	return value
}