feat: add CSV export for approved orders && add non-delivery reason modal for livreurs

backend/gestion/handlers/deleviry.go

@@ -414,3 +414,61 @@ func UpdateDeliveryStatus(c *gin.Context) {
 
 	c.JSON(http.StatusOK, response)
 }
+
+// POST /api/v1/livreur/deliveries/:id/issue
+func ReportDeliveryIssue(c *gin.Context) {
+	username := c.GetString("username")
+	if c.GetString("role") != "livreur" {
+		c.JSON(http.StatusForbidden, gin.H{"error": "Accès refusé"})
+		return
+	}
+
+	commandID, err := strconv.Atoi(c.Param("id"))
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "ID invalide"})
+		return
+	}
+
+	var req struct {
+		IssueType   string `json:"issue_type" binding:"required"`
+		Description string `json:"description"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "issue_type requis"})
+		return
+	}
+
+	validTypes := map[string]bool{
+		"client_absent":    true,
+		"wrong_address":    true,
+		"refused_delivery": true,
+		"no_access":        true,
+		"other":            true,
+	}
+	if !validTypes[req.IssueType] {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Type de problème invalide"})
+		return
+	}
+
+	database := c.MustGet("database").(*db.Database)
+
+	command, err := database.GetCommandByID(commandID)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Commande introuvable"})
+		return
+	}
+	if livreur, _ := command["livreur_assign"].(string); livreur != username {
+		c.JSON(http.StatusForbidden, gin.H{"error": "Commande non assignée à vous"})
+		return
+	}
+
+	issue, err := database.CreateDeliveryIssue(commandID, req.IssueType, req.Description, username)
+	if err != nil {
+		log.Printf("❌ [ISSUE] Erreur création: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Erreur création problème"})
+		return
+	}
+
+	log.Printf("📋 [ISSUE] Créé par %s pour commande #%d: %s", username, commandID, req.IssueType)
+	c.JSON(http.StatusCreated, gin.H{"success": true, "issue": issue})
+}