package main

import (
	"fmt"
	"log"
	"bufio"
	"os"
	"time"
	"strings"

	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"

	"GoEthemineTelegramBot/botsettings"
)


var (
	dBConnector Connection
	myBotClient tgbotapi.BotAPI

	LogInfo  *log.Logger
	LogWarn  *log.Logger
	LogError *log.Logger
	LogDebug *log.Logger
)

func main() {
	settingsPath := "config.json"
	LoadSettings(settingsPath)

	LoggersInit()
	LogInfo.Println("App started")

	botClient, err := tgbotapi.NewBotAPI(botsettings.Token())
	if err != nil {
		LogError.Panic(err)
	}
	myBotClient = *botClient
	var me = botClient.Self
	LogInfo.Printf("Hello, World! I am user %d and my name is %s.\n", me.ID, me.FirstName)

	if len(os.Args[1:]) >= 2 {
		botsettings.SetDbUser(os.Args[1])
		botsettings.SetDbPassword(os.Args[2])
	} else {
		var username string
		fmt.Print("DataBase Username:")
		_, err := fmt.Scanln(&username)
		if err != nil {
			LogError.Println(os.Stderr, err)
			return
		}
		botsettings.SetDbUser(username)

		var password string 
		fmt.Print("DataBase Password:")
		_, err = fmt.Scanln(&password)
		if err != nil {
			LogError.Println(os.Stderr, err)
			return
		}
		botsettings.SetDbPassword(password)
	}
	
	dBConnector.Init()

	go Updater()
	go Listener(botClient)

	fmt.Println("Press Enter to exit")
	reader := bufio.NewReader(os.Stdin)
	reader.ReadString('\n')
}



// Listens for comming messages.
func Listener(botClient *tgbotapi.BotAPI) {
	u := tgbotapi.NewUpdate(0)
	u.Timeout = 60

	updates, _ := botClient.GetUpdatesChan(u)

	for update := range updates {
		// Ignore any non-Message Updates
		if update.Message == nil {
			continue
		}

		go HandleMessage(update.Message, botClient)
	}
}

// Starts DataUpdater goroutine every 4 minutes
func Updater() {
	LogInfo.Println("Scheduler started!")
	for {
		go UpdateData()
		time.Sleep(4 * time.Minute)
	}
}

// LoadSettings load settings from settingsPath 
// and then saves them again for keep up-to-date struct
func LoadSettings(settingsPath string) {
	err := botsettings.LoadFromFile(settingsPath)
	if err != nil {
		if !strings.Contains(err.Error(), "The system cannot find the file specified") {
			fmt.Println(err)
			os.Exit(1)
    	}

    	path, err := os.Getwd()
		if err != nil {
	    	fmt.Println(err)
	    	os.Exit(1)
	   	}

		path += "\\"+ settingsPath
     	fmt.Printf("The system cannot find the config file.\nCreating new config file at:\n%s\n", path)
      	botsettings.SaveToFile(path)
      	fmt.Println("Please fill the config file")
      	os.Exit(0)
	}
	botsettings.SaveToFile(settingsPath)
}