Initial Backupper Unraid plugin

internal/notify/notify.go

@@ -0,0 +1,65 @@
+package notify
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"net/http"
+	"net/url"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/backupper-unraid/backupper/internal/model"
+)
+
+type SecretGetter interface{ Get(string) (string, error) }
+
+type Sender struct {
+	Secrets SecretGetter
+	Client  *http.Client
+}
+
+func (s *Sender) Send(ctx context.Context, target model.NotificationTarget, title, message, severity string) error {
+	if !target.Enabled {
+		return nil
+	}
+	switch target.Type {
+	case "unraid":
+		importance := "normal"
+		if severity == "error" {
+			importance = "alert"
+		}
+		return exec.CommandContext(ctx, "/usr/local/emhttp/webGui/scripts/notify", "-e", "Backupper", "-s", title, "-d", message, "-i", importance).Run()
+	case "ntfy":
+		endpoint := strings.TrimRight(target.URL, "/") + "/" + url.PathEscape(target.Topic)
+		req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewBufferString(message))
+		if err != nil {
+			return err
+		}
+		req.Header.Set("Title", title)
+		req.Header.Set("Tags", "floppy_disk")
+		if target.TokenRef != "" {
+			token, err := s.Secrets.Get(target.TokenRef)
+			if err != nil {
+				return err
+			}
+			req.Header.Set("Authorization", "Bearer "+token)
+		}
+		client := s.Client
+		if client == nil {
+			client = &http.Client{Timeout: 15 * time.Second}
+		}
+		response, err := client.Do(req)
+		if err != nil {
+			return err
+		}
+		defer response.Body.Close()
+		if response.StatusCode < 200 || response.StatusCode >= 300 {
+			return fmt.Errorf("ntfy returned %s", response.Status)
+		}
+		return nil
+	default:
+		return fmt.Errorf("unsupported notification type %q", target.Type)
+	}
+}