package main

import (
	"flag"
	"log"

	"gitlab.com/whom/bingobot/internal/activity"
	"gitlab.com/whom/bingobot/internal/config"
	"gitlab.com/whom/bingobot/internal/discord"
	"gitlab.com/whom/bingobot/internal/logging"
	"gitlab.com/whom/bingobot/internal/state"
	"gitlab.com/whom/bingobot/internal/web"
)

var (
	token = flag.String("token", "", "Bot authentication token")
)

func main() {
	var err error

	err = config.Init()

	if err != nil {
		log.Fatal(err)
	}

	logging.Init()
	flag.Parse()

	if err := state.Init(
		config.Get().InMemoryEventCacheSize,
		config.Get().PersistentCacheStore,
	); err != nil {
		log.Fatalf("couldn't initialize state engine: %s", err.Error())
	}

	if err := activity.Start(); err != nil {
		// TODO: handle gracefully and continue?
		log.Fatalf("failed to start activity module: %s", err.Error())
	}

	if err := web.Start(); err != nil {
		log.Fatalf("failed to start local web server: %s", err.Error())
	}

	// start this LAST
	if err := state.Start(); err != nil {
		log.Fatalf("failed to start state machine: %s", err.Error())
	}
	defer state.Teardown()

	if err := startBot(); err != nil {
		log.Fatal(err)
	}
}

func startBot() error {
	err := discord.Connect(*token)

	if err != nil {
		return err
	}

	logging.Info("shutting down gracefully", "type", "shutdown")
	discord.Close()

	return nil
}