add revision number

internal/handler/letter_outgoing_handler.go

@@ -23,6 +23,7 @@ type LetterOutgoingService interface {
 	SubmitForApproval(ctx context.Context, letterID uuid.UUID) error
 	ApproveOutgoingLetter(ctx context.Context, letterID uuid.UUID, req *contract.ApproveLetterRequest) error
 	RejectOutgoingLetter(ctx context.Context, letterID uuid.UUID, req *contract.RejectLetterRequest) error
+	ReviseOutgoingLetter(ctx context.Context, letterID uuid.UUID, req *contract.ReviseLetterRequest) error
 	SendOutgoingLetter(ctx context.Context, letterID uuid.UUID) error
 	ArchiveOutgoingLetter(ctx context.Context, letterID uuid.UUID) error
 
@@ -217,6 +218,27 @@ func (h *LetterOutgoingHandler) RejectOutgoingLetter(c *gin.Context) {
 	c.JSON(http.StatusOK, contract.BuildSuccessResponse(&contract.SuccessResponse{Message: "rejected"}))
 }
 
+func (h *LetterOutgoingHandler) ReviseOutgoingLetter(c *gin.Context) {
+	id, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		c.JSON(http.StatusBadRequest, &contract.ErrorResponse{Error: "invalid id", Code: http.StatusBadRequest})
+		return
+	}
+
+	var req contract.ReviseLetterRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, &contract.ErrorResponse{Error: "invalid body", Code: http.StatusBadRequest})
+		return
+	}
+
+	if err := h.svc.ReviseOutgoingLetter(c.Request.Context(), id, &req); err != nil {
+		c.JSON(http.StatusInternalServerError, &contract.ErrorResponse{Error: err.Error(), Code: http.StatusInternalServerError})
+		return
+	}
+
+	c.JSON(http.StatusOK, contract.BuildSuccessResponse(&contract.SuccessResponse{Message: "revised"}))
+}
+
 func (h *LetterOutgoingHandler) SendOutgoingLetter(c *gin.Context) {
 	id, err := uuid.Parse(c.Param("id"))
 	if err != nil {