package schedule

import (
	"fmt"
	"log"
	"os"

	"git.inkling.su/mrqiz/schedule-poll/internal/config"
	"git.inkling.su/mrqiz/schedule-poll/internal/telegram"
)

func PollSchedule() {
	flagFilePath := config.AppConfig.FlagfilePath

	if _, fileErr := os.Stat(flagFilePath); fileErr == nil {
		return
	}

	facultyId := config.AppConfig.Schedule.FacultyId
	groupId := config.AppConfig.Schedule.GroupId
	date := config.AppConfig.Schedule.StartDate

	week, err := GetWeek(groupId, date)

	if err != nil {
		log.Panicln("Failed to get week data", err)
	}

	days := len(week.Days)

	if days != 0 {
		siteUrl := GetScheduleUrl(facultyId, groupId, date)
		msg := fmt.Sprintf(
			"❗ <b>Опубликовано расписание на новый семестр!</b>\n\n"+
				"Появились занятия на неделе с <code>%s</code>\n"+
				"Доступно дней: <code>%d</code>\n\n"+
				"<a href=\"%s\">Неделя на сайте расписания</a>\n",
			date,
			days,
			siteUrl)

		err = telegram.SendMessage(config.AppConfig.Telegram.ChatId, msg)
		if err != nil {
			log.Panicln("Unable to send message: ", err)
		}
		os.WriteFile(flagFilePath, []byte(msg), os.FileMode(0777))
		log.Printf("Found %d days", len(week.Days))
	}
}