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package ifttt
import (
"bytes"
"context"
"errors"
"fmt"
"net/http"
"net/url"
"github.com/nicholas-fedor/shoutrrr/pkg/format"
"github.com/nicholas-fedor/shoutrrr/pkg/services/standard"
"github.com/nicholas-fedor/shoutrrr/pkg/types"
)
// apiURLFormat defines the IFTTT webhook URL template.
const (
apiURLFormat = "https://maker.ifttt.com/trigger/%s/with/key/%s"
)
// ErrSendFailed indicates a failure to send an IFTTT event notification.
var (
ErrSendFailed = errors.New("failed to send IFTTT event")
ErrUnexpectedStatus = errors.New("got unexpected response status code")
)
// Service sends notifications to an IFTTT webhook.
type Service struct {
standard.Standard
Config *Config
pkr format.PropKeyResolver
}
// Initialize configures the service with a URL and logger.
func (service *Service) Initialize(configURL *url.URL, logger types.StdLogger) error {
service.SetLogger(logger)
service.Config = &Config{
UseMessageAsValue: DefaultMessageValue,
}
service.pkr = format.NewPropKeyResolver(service.Config)
if err := service.Config.setURL(&service.pkr, configURL); err != nil {
return err
}
return nil
}
// GetID returns the identifier for this service.
func (service *Service) GetID() string {
return Scheme
}
// Send delivers a notification message to an IFTTT webhook.
func (service *Service) Send(message string, params *types.Params) error {
config := service.Config
if err := service.pkr.UpdateConfigFromParams(config, params); err != nil {
return fmt.Errorf("updating config from params: %w", err)
}
payload, err := createJSONToSend(config, message, params)
if err != nil {
return err
}
for _, event := range config.Events {
apiURL := service.createAPIURLForEvent(event)
if err := doSend(payload, apiURL); err != nil {
return fmt.Errorf("%w: event %q: %w", ErrSendFailed, event, err)
}
}
return nil
}
// createAPIURLForEvent builds an IFTTT webhook URL for a specific event.
func (service *Service) createAPIURLForEvent(event string) string {
return fmt.Sprintf(apiURLFormat, event, service.Config.WebHookID)
}
// doSend executes an HTTP POST request to send the payload to the IFTTT webhook.
func doSend(payload []byte, postURL string) error {
req, err := http.NewRequestWithContext(
context.Background(),
http.MethodPost,
postURL,
bytes.NewBuffer(payload),
)
if err != nil {
return fmt.Errorf("creating HTTP request: %w", err)
}
req.Header.Set("Content-Type", "application/json")
res, err := http.DefaultClient.Do(req)
if err != nil {
return fmt.Errorf("sending HTTP request to IFTTT webhook: %w", err)
}
defer res.Body.Close()
if res.StatusCode < 200 || res.StatusCode >= 300 {
return fmt.Errorf("%w: %s", ErrUnexpectedStatus, res.Status)
}
return nil
}
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