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telegram.go
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telegram.go
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package telegram
import (
"errors"
"github.com/containrrr/shoutrrr/pkg/format"
"net/url"
"github.com/containrrr/shoutrrr/pkg/services/standard"
"github.com/containrrr/shoutrrr/pkg/types"
)
const (
apiFormat = "https://api.telegram.org/bot%s/%s"
maxlength = 4096
)
// Service sends notifications to a given telegram chat
type Service struct {
standard.Standard
config *Config
pkr format.PropKeyResolver
}
// Send notification to Telegram
func (service *Service) Send(message string, params *types.Params) error {
if len(message) > maxlength {
return errors.New("Message exceeds the max length")
}
config := *service.config
if err := service.pkr.UpdateConfigFromParams(&config, params); err != nil {
return err
}
return service.sendMessageForChatIDs(message, &config)
}
// Initialize loads ServiceConfig from configURL and sets logger for this Service
func (service *Service) Initialize(configURL *url.URL, logger types.StdLogger) error {
service.Logger.SetLogger(logger)
service.config = &Config{
Preview: true,
Notification: true,
}
service.pkr = format.NewPropKeyResolver(service.config)
if err := service.config.setURL(&service.pkr, configURL); err != nil {
return err
}
return nil
}
func (service *Service) sendMessageForChatIDs(message string, config *Config) error {
for _, chat := range service.config.Chats {
if err := sendMessageToAPI(message, chat, config); err != nil {
return err
}
}
return nil
}
// GetConfig returns the Config for the service
func (service *Service) GetConfig() *Config {
return service.config
}
func sendMessageToAPI(message string, chat string, config *Config) error {
client := &Client{token: config.Token}
payload := createSendMessagePayload(message, chat, config)
_, err := client.SendMessage(&payload)
return err
}