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|
package googlechat
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/url"
"github.com/nicholas-fedor/shoutrrr/pkg/services/standard"
"github.com/nicholas-fedor/shoutrrr/pkg/types"
)
// ErrUnexpectedStatus indicates an unexpected HTTP status code from the Google Chat API.
var ErrUnexpectedStatus = errors.New("google chat api returned unexpected http status code")
// Service implements a Google Chat notification service.
type Service struct {
standard.Standard
Config *Config
}
// 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{}
return service.Config.SetURL(configURL)
}
// GetID returns the identifier for this service.
func (service *Service) GetID() string {
return Scheme
}
// Send delivers a notification message to Google Chat.
func (service *Service) Send(message string, _ *types.Params) error {
config := service.Config
jsonBody, err := json.Marshal(JSON{Text: message})
if err != nil {
return fmt.Errorf("marshaling message to JSON: %w", err)
}
postURL := getAPIURL(config)
jsonBuffer := bytes.NewBuffer(jsonBody)
req, err := http.NewRequestWithContext(
context.Background(),
http.MethodPost,
postURL.String(),
jsonBuffer,
)
if err != nil {
return fmt.Errorf("creating HTTP request: %w", err)
}
req.Header.Set("Content-Type", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return fmt.Errorf("sending notification to Google Chat: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return fmt.Errorf("%w: %d", ErrUnexpectedStatus, resp.StatusCode)
}
return nil
}
// getAPIURL constructs the API URL for Google Chat notifications.
func getAPIURL(config *Config) *url.URL {
query := url.Values{}
query.Set("key", config.Key)
query.Set("token", config.Token)
return &url.URL{
Path: config.Path,
Host: config.Host,
Scheme: "https",
RawQuery: query.Encode(),
}
}
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