package main

import (
	"context"
	"fmt"
	"log"
	"time"

	"git.nefrace.ru/nefrace/nechotron"
	"git.nefrace.ru/nefrace/tongo"
	"github.com/NicoNex/echotron/v3"
	"github.com/mmcdole/gofeed"
)

var text_template = `
[*%s*](%s)
_%s_

%s
`

func RSSTask(api *echotron.API) {
	for {
		ParseRSS(api)
		time.Sleep(5 * time.Minute)
	}
}

func ParseRSS(api *echotron.API) {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	feedChats := tongo.NewStore[FeedChat](db)
	feeds := tongo.NewStore[Feeds](db)
	lastFeed, err := feeds.GetOne(ctx)
	if err != nil || lastFeed == nil {
		lastFeed = &Feeds{
			Item: tongo.NewID(),
		}
		feeds.ReplaceItem(ctx, *lastFeed, true)
	}
	fp := gofeed.NewParser()
	feed, err := fp.ParseURL("https://godotengine.org/rss.xml")
	if err != nil {
		log.Println("Can't get feed: ", err)
		return
	}
	item := feed.Items[0]
	if lastFeed.Published.Compare(*item.PublishedParsed) == -1 {
		chats, _ := feedChats.GetMany(ctx)
		if len(chats) == 0 {
			return
		}
		title := item.Title
		author := "by " + item.Author.Name
		desc := item.Description
		translator := InitTranslator()
		translates, err := translator.Translate("ru", item.Title, item.Description)
		if err == nil {
			title = translates[0]
			desc = translates[1]
		}
		text := fmt.Sprintf(text_template,
			nechotron.EscapeMd2(title),
			item.Link,
			nechotron.EscapeMd2(author),
			nechotron.EscapeMd2(desc),
		)
		sent := false
		for _, chat := range chats {
			_, err := api.SendPhoto(echotron.NewInputFileURL(item.Custom["image"]), chat.ChatID, nechotron.NewOptions().MarkdownV2().Caption(text).PhotoOptions())
			if err != nil {
				log.Println("Can't send message to", chat.Title, ": ", err)
			} else {
				sent = true
			}
			time.Sleep(1 * time.Second)
		}
		if !sent {
			return
		}
		lastFeed.Published = *item.PublishedParsed
		lastFeed.Title = item.Title
		feeds.ReplaceItem(ctx, *lastFeed, true)
	}
}