package main

import (
	"strings"
	"text/template"

	"git.milar.in/milarin/adverr"
	"git.milar.in/nyaanime/model"
	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
)

var TelegramBot *tgbotapi.BotAPI

func InitTelegramBot() error {
	if TelegramBotToken != "" && TelegramChatID != 0 {
		bot, err := tgbotapi.NewBotAPI(TelegramBotToken)
		if err != nil {
			return err
		}
		TelegramBot = bot
	}
	return nil
}

func SendTelegramMessage(text string) {
	if TelegramBot == nil || strings.TrimSpace(text) == "" {
		return
	}

	msg := tgbotapi.NewMessage(TelegramChatID, text)
	_, err := TelegramBot.Send(msg)
	if err != nil {
		adverr.Println(adverr.Wrap("could not send telegram message", err))
	}
}

func SendTelegramAnimeEpMessage(messagePattern *template.Template, animeEps []model.AnimeEpisode) {
	if len(animeEps) == 0 {
		return
	}

	b := new(strings.Builder)
	if err := messagePattern.Execute(b, animeEps); err != nil {
		adverr.Println(adverr.Wrap("could not send telegram message", err))
	}

	SendTelegramMessage(b.String())
}