package main

import (
	"time"
	"log"
	"fmt"
	"database/sql"
	_ "github.com/go-sql-driver/mysql"

	tb "gopkg.in/tucnak/telebot.v2"
)

type Config struct {
	Telegram struct {
		URL			string
		Token		string
	}
	SQL struct {
		Driver		string
		Type		string
		Address		string
		Username	string
		Password	string
		Database	string
	}
	Rabbit struct {
		User        string
		Password    string
		Host        string
		Queue       string
	}
}

var (
	config		= flag.String("config", "chirpnest.cfg", "config file path")
	initdb		= flag.Bool("initdb", false, "initialize bot database")
	
	db 			*sql.DB

	cfg 		Config
)

func PrintText(m *tb.Message) {
	fmt.Printf("[%d] %s(%d) | %s(%d) : %s\n", m.ID, m.Chat.Title, m.Chat.ID, m.Sender.Username, m.Sender.ID, m.Text)
	return
}

func main() {
	log.Println("Starting Chirpnest...")
	
	// Parsing config
    flag.Parse()
	
	err = gcfg.ReadFileInto(&cfg, *config)
	if err != nil {
		log.Fatalf("Failed to parse gcfg data: %s", err)
	}
	
	// Connecting to DB
	switch cfg.SQL.Driver {
		case "mysql":
			db, err = sql.Open("mysql",cfg.SQL.Username + ":" + cfg.SQL.Password + "@" + cfg.SQL.Type + "(" + cfg.SQL.Address + ")/" + cfg.SQL.Database)
			if err != nil {
				log.Fatal(err)
			}
			defer db.Close()
			
	}
	
	// Check if any issue
	err = db.Ping()
	if err != nil {
		log.Fatal(err)
	} else {
		log.Println("SQL connection initialized")
	}

	// Registering bot
	b, err := tb.NewBot(tb.Settings{
		Token:  cfg.Telegram.Token, 
        URL: cfg.Telegram.URL,
		Poller: &tb.LongPoller{Timeout: 10 * time.Second},
	})

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

	b.Handle("/hello", func(m *tb.Message) {
		if !m.Private() {
			return
		}
//		fmt.Println("Hello payload :", m.Payload) // <PAYLOAD>
		PrintText(m)
		b.Send(m.Sender, "hello world")
	})
	
	b.Handle(tb.OnPhoto, func(m *tb.Message) {
	    fmt.Println("OnPhoto :", m.Text)
		// photos only
	})

	b.Handle(tb.OnChannelPost, func (m *tb.Message) {
	    fmt.Println("OnChannelPost :", m.Text)
	    PrintText(m)
		// channel posts only
	})

	b.Handle(tb.OnQuery, func (q *tb.Query) {
	    fmt.Println("Query ?")
		// incoming inline queries
	})
	
	b.Handle(tb.OnText, func(m *tb.Message) {
	    PrintText(m)
		// all the text messages that weren't
		// captured by existing handlers
	})

	b.Start()
}