mirror of https://github.com/jlelse/GoBlog
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package main
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"log"
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"net/http"
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"net/url"
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"strings"
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)
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const telegramBaseURL = "https://api.telegram.org/bot"
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func initTelegram() {
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enable := false
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for _, b := range appConfig.Blogs {
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if tg := b.Telegram; tg != nil && tg.Enabled && tg.BotToken != "" && tg.ChatID != "" {
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enable = true
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}
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}
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if enable {
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postHooks[postPostHook] = append(postHooks[postPostHook], func(p *post) {
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if p.isPublishedSectionPost() {
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p.tgPost()
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}
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})
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}
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}
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func (p *post) tgPost() {
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tg := appConfig.Blogs[p.Blog].Telegram
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if tg == nil || !tg.Enabled || tg.BotToken == "" || tg.ChatID == "" {
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return
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}
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replacer := strings.NewReplacer("<", "<", ">", ">", "&", "&")
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var message bytes.Buffer
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if title := p.title(); title != "" {
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message.WriteString(replacer.Replace(title))
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message.WriteString("\n\n")
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}
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if tg.InstantViewHash != "" {
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message.WriteString("<a href=\"https://t.me/iv?rhash=" + tg.InstantViewHash + "&url=" + url.QueryEscape(p.fullURL()) + "\">")
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message.WriteString(replacer.Replace(p.shortURL()))
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message.WriteString("</a>")
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} else {
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message.WriteString("<a href=\"" + p.shortURL() + "\">")
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message.WriteString(replacer.Replace(p.shortURL()))
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message.WriteString("</a>")
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}
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if err := sendTelegramMessage(message.String(), "HTML", tg.BotToken, tg.ChatID); err != nil {
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log.Println(err.Error())
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}
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}
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func sendTelegramMessage(message, mode, token, chat string) error {
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params := url.Values{}
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params.Add("chat_id", chat)
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params.Add("text", message)
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if mode != "" {
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params.Add("parse_mode", mode)
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}
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tgURL, err := url.Parse(telegramBaseURL + token + "/sendMessage")
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if err != nil {
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return errors.New("failed to create Telegram request")
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}
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tgURL.RawQuery = params.Encode()
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req, _ := http.NewRequest(http.MethodPost, tgURL.String(), nil)
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resp, err := appHttpClient.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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_, _ = io.Copy(io.Discard, resp.Body)
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("failed to send Telegram message, status code %d", resp.StatusCode)
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}
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return nil
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}
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