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telegram.go
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telegram.go
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// Copyright (c) 2021 - 2023, Ludvig Lundgren and the autobrr contributors.
// SPDX-License-Identifier: GPL-2.0-or-later
package notification
import (
"bytes"
"encoding/json"
"fmt"
"html"
"io"
"net/http"
"strconv"
"strings"
"time"
"github.com/autobrr/autobrr/internal/domain"
"github.com/autobrr/autobrr/pkg/errors"
"github.com/dustin/go-humanize"
"github.com/rs/zerolog"
)
// Reference: https://core.telegram.org/bots/api#sendmessage
type TelegramMessage struct {
ChatID string `json:"chat_id"`
Text string `json:"text"`
ParseMode string `json:"parse_mode"`
MessageThreadID int `json:"message_thread_id,omitempty"`
}
type telegramSender struct {
log zerolog.Logger
Settings domain.Notification
ThreadID int
}
func NewTelegramSender(log zerolog.Logger, settings domain.Notification) domain.NotificationSender {
threadID := 0
if t := settings.Topic; t != "" {
var err error
threadID, err = strconv.Atoi(t)
if err != nil {
log.Error().Err(err).Msgf("could not parse specified topic %q as an integer", t)
}
}
return &telegramSender{
log: log.With().Str("sender", "telegram").Logger(),
Settings: settings,
ThreadID: threadID,
}
}
func (s *telegramSender) Send(event domain.NotificationEvent, payload domain.NotificationPayload) error {
m := TelegramMessage{
ChatID: s.Settings.Channel,
Text: s.buildMessage(event, payload),
MessageThreadID: s.ThreadID,
ParseMode: "HTML",
//ParseMode: "MarkdownV2",
}
jsonData, err := json.Marshal(m)
if err != nil {
s.log.Error().Err(err).Msgf("telegram client could not marshal data: %v", m)
return errors.Wrap(err, "could not marshal data: %+v", m)
}
url := fmt.Sprintf("https://api.telegram.org/bot%v/sendMessage", s.Settings.Token)
req, err := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(jsonData))
if err != nil {
s.log.Error().Err(err).Msgf("telegram client request error: %v", event)
return errors.Wrap(err, "could not create request")
}
req.Header.Set("Content-Type", "application/json")
//req.Header.Set("User-Agent", "autobrr")
client := http.Client{Timeout: 30 * time.Second}
res, err := client.Do(req)
if err != nil {
s.log.Error().Err(err).Msgf("telegram client request error: %v", event)
return errors.Wrap(err, "could not make request: %+v", req)
}
body, err := io.ReadAll(res.Body)
if err != nil {
s.log.Error().Err(err).Msgf("telegram client request error: %v", event)
return errors.Wrap(err, "could not read data")
}
defer res.Body.Close()
s.log.Trace().Msgf("telegram status: %v response: %v", res.StatusCode, string(body))
if res.StatusCode != http.StatusOK {
s.log.Error().Err(err).Msgf("telegram client request error: %v", string(body))
return errors.New("bad status: %v body: %v", res.StatusCode, string(body))
}
s.log.Debug().Msg("notification successfully sent to telegram")
return nil
}
func (s *telegramSender) CanSend(event domain.NotificationEvent) bool {
if s.isEnabled() && s.isEnabledEvent(event) {
return true
}
return false
}
func (s *telegramSender) isEnabled() bool {
if s.Settings.Enabled && s.Settings.Token != "" && s.Settings.Channel != "" {
return true
}
return false
}
func (s *telegramSender) isEnabledEvent(event domain.NotificationEvent) bool {
for _, e := range s.Settings.Events {
if e == string(event) {
return true
}
}
return false
}
func (s *telegramSender) buildMessage(event domain.NotificationEvent, payload domain.NotificationPayload) string {
msg := ""
if payload.Subject != "" && payload.Message != "" {
msg += fmt.Sprintf("%v\n<b>%v</b>", payload.Subject, html.EscapeString(payload.Message))
}
if payload.ReleaseName != "" {
msg += fmt.Sprintf("\n<b>New release:</b> %v", html.EscapeString(payload.ReleaseName))
}
if payload.Size > 0 {
msg += fmt.Sprintf("\n<b>File Size:</b> %v", html.EscapeString(humanize.Bytes(payload.Size)))
}
if payload.Status != "" {
msg += fmt.Sprintf("\n<b>Status:</b> %v", payload.Status.String())
}
if payload.Indexer != "" {
msg += fmt.Sprintf("\n<b>Indexer:</b> %v", payload.Indexer)
}
if payload.Filter != "" {
msg += fmt.Sprintf("\n<b>Filter:</b> %v", html.EscapeString(payload.Filter))
}
if payload.Action != "" {
action := fmt.Sprintf("\n<b>Action:</b> %v <b>Type:</b> %v", html.EscapeString(payload.Action), payload.ActionType)
if payload.ActionClient != "" {
action += fmt.Sprintf(" <b>Client:</b> %v", html.EscapeString(payload.ActionClient))
}
msg += action
}
if len(payload.Rejections) > 0 {
msg += fmt.Sprintf("\nRejections: %v", strings.Join(payload.Rejections, ", "))
}
return msg
}