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telegram.go
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telegram.go
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// Copyright (c) 2021 - 2024, Ludvig Lundgren and the autobrr contributors.
// SPDX-License-Identifier: GPL-2.0-or-later
package notification
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"strconv"
"time"
"github.com/autobrr/autobrr/internal/domain"
"github.com/autobrr/autobrr/pkg/errors"
"github.com/autobrr/autobrr/pkg/sharedhttp"
"github.com/rs/zerolog"
)
// TelegramMessage 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
builder MessageBuilderHTML
httpClient *http.Client
}
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,
builder: MessageBuilderHTML{},
httpClient: &http.Client{
Timeout: time.Second * 30,
Transport: sharedhttp.Transport,
},
}
}
func (s *telegramSender) Send(event domain.NotificationEvent, payload domain.NotificationPayload) error {
message := s.builder.BuildBody(payload)
m := TelegramMessage{
ChatID: s.Settings.Channel,
Text: message,
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)
}
var host string
if s.Settings.Host == "" {
host = "https://api.telegram.org"
} else {
host = s.Settings.Host
}
url := fmt.Sprintf("%v/bot%v/sendMessage", host, 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")
res, err := s.httpClient.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)
}
defer res.Body.Close()
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")
}
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
}