feat: Changes task errors to string array

handler.go

@@ -22,6 +22,7 @@ func (s *Server) handleEnqueue(w http.ResponseWriter, r *http.Request) {
 	}
 	var req struct {
 		ApplicationId string                 `json:"applicationId"`
+		EventId       string                 `json:"eventId"`
 		Payload       map[string]interface{} `json:"payload"`
 		Priority      int                    `json:"priority"`
 		DelaySec      int                    `json:"delaySec"`    // optional delay until available
@@ -42,6 +43,7 @@ func (s *Server) handleEnqueue(w http.ResponseWriter, r *http.Request) {
 
 	task := models.Task{
 		ApplicationId: req.ApplicationId,
+		EventId:       req.EventId,
 		Payload:       req.Payload,
 		Priority:      req.Priority,
 		AvailableAt:   availableAt,
@@ -150,10 +152,11 @@ func (s *Server) handlePop(w http.ResponseWriter, r *http.Request) {
 
 	// If attempts > maxAttempts, mark done with error note instead of returning
 	if task.MaxAttempts > 0 && task.Attempts > task.MaxAttempts {
+		task.Errors = append(task.Errors, "max retry attempts exceeded")
 		_, _ = s.col.UpdateByID(ctx, task.ID, bson.D{
 			{"$set", bson.D{
 				{"status", StatusDone},
-				{"error", "max attempts exceeded"},
+				{"errors", task.Errors},
 				{"updatedAt", time.Now().UTC()},
 			}},
 		})
@@ -277,10 +280,10 @@ func (s *Server) handleRequeue(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	var req struct {
-		TaskID   string `json:"taskId"`
-		WorkerID string `json:"workerId"`
-		DelaySec int    `json:"delaySec"` // optional
-		Error    string `json:"error"`
+		TaskID   string   `json:"taskId"`
+		WorkerID string   `json:"workerId"`
+		DelaySec int      `json:"delaySec"` // optional
+		Errors   []string `json:"errors"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
 		httpError(w, http.StatusBadRequest, "invalid json: "+err.Error())
@@ -318,7 +321,7 @@ func (s *Server) handleRequeue(w http.ResponseWriter, r *http.Request) {
 			{"leaseOwner", ""},
 			{"leasedUntil", time.Time{}},
 			{"updatedAt", now},
-			{"error", req.Error},
+			{"errors", req.Errors},
 		}},
 	}
 	res, err := s.col.UpdateOne(ctx, filter, update)