package main

import (
	"fmt"
	tb "gopkg.in/tucnak/telebot.v2"
	"regexp"
	"time"
)

var (
	b *tb.Bot
)

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

	failOnError(err, "StartBot")

	b.Handle("/hello", func(m *tb.Message) {
		s, err := botHello(m)
		logOnError(err, "/hello")
		if err == nil {
			b.Send(m.Sender, s)
		}
	})

	b.Handle("/msg_rescan", func(m *tb.Message) {
		s, err := botMsgRescan(m)
		logOnError(err, "/msg_rescan")
		if err == nil {
			b.Send(m.Sender, s)
		}
	})

	b.Handle(tb.OnPhoto, botPhoto)
	b.Handle(tb.OnChannelPost, botChannelPost)
	b.Handle(tb.OnQuery, botQuery)
	b.Handle(tb.OnText, botText)

	b.Start()
}

func botPhoto(m *tb.Message) {
	fmt.Println("botPhoto :", m.Text)
	//	photos only
}

func botHello(m *tb.Message) (string, error) {
	fmt.Println("botHello :", m.Text)
	if !m.Private() {
		fmt.Println("botHello : !m.Private()")
		return ``, nil
	}
	//	fmt.Println("Hello payload :", m.Payload) // <PAYLOAD>
	PrintText(m)
	return `hello world`, nil
}

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

func botQuery(q *tb.Query) {
	fmt.Println("botQuery")
	//	incoming inline queries
}

func botText(m *tb.Message) {
	fmt.Println("botText :", m.Text)
	PrintText(m)
	// all the text messages that weren't
	// captured by existing handlers
}

func botMsgRescan(m *tb.Message) (string, error) {
	fmt.Println("botRescanMsg :", m.Text)
	if !m.Private() {
		fmt.Println("botRescanMsg : !m.Private()")
		return ``, nil
	}
	r := regexp.MustCompile("^[0-9]+$")
	if r.MatchString(m.Payload) {
		return "Rescaning msg #" + m.Payload, nil
	}
	r = regexp.MustCompile("^all$")
	if r.MatchString(m.Payload) {
		return "Rescaning all msg", nil
	}
	return `rescaning`, nil
}