feat(API): optional display name on users

api/handlers/user/userHandler.go

@@ -0,0 +1,70 @@
+package user
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	"RenewCMS/api/pkg/claims"
+	"RenewCMS/api/pkg/publicuser"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/domain/user"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"errors"
+	"net/http"
+)
+
+type Handler struct {
+	UpdateProfileUseCase *useCases.UpdateUserProfileUseCase
+}
+
+type UpdateProfileRequest struct {
+	DisplayName *string `json:"display_name" validate:"required"`
+}
+
+func NewHandler(updateProfile *useCases.UpdateUserProfileUseCase) *Handler {
+	return &Handler{
+		UpdateProfileUseCase: updateProfile,
+	}
+}
+
+func (h *Handler) UpdateMe(w http.ResponseWriter, r *http.Request) {
+	var request UpdateProfileRequest
+	err := json.NewDecoder(r.Body).Decode(&request)
+	if err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	err = validator.Validate.Struct(request)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	userId, ok := claims.UserId(r)
+	if !ok {
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+		return
+	}
+
+	updatedUser, err := h.UpdateProfileUseCase.UpdateDisplayName(userId, *request.DisplayName)
+	if err != nil {
+		if errors.Is(err, user.ErrInvalidDisplayName) {
+			http.Error(w, apperr.DisplayNameErrorMessage, http.StatusBadRequest)
+			return
+		}
+		if errors.Is(err, user.ErrUserNotFound) {
+			http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+			return
+		}
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	body, err := json.Marshal(publicuser.New(updatedUser))
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Cache-Control", "no-store")
+	_, _ = w.Write(body)
+}