feat: custom content types backend

api/handlers/contenttype/contentTypeHandler.go

@@ -0,0 +1,153 @@
+package contenttype
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	"RenewCMS/api/pkg/response"
+	validator "RenewCMS/api/pkg/validator"
+	domain "RenewCMS/internal/domain/contenttype"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+)
+
+type Handler struct {
+	CreateUseCase *useCases.CreateContentTypeUseCase
+	ListUseCase   *useCases.ListContentTypesUseCase
+	GetUseCase    *useCases.GetContentTypeUseCase
+	UpdateUseCase *useCases.UpdateContentTypeUseCase
+	DeleteUseCase *useCases.DeleteContentTypeUseCase
+}
+
+func NewHandler(create *useCases.CreateContentTypeUseCase, list *useCases.ListContentTypesUseCase, get *useCases.GetContentTypeUseCase, update *useCases.UpdateContentTypeUseCase, deleteUseCase *useCases.DeleteContentTypeUseCase) *Handler {
+	return &Handler{CreateUseCase: create, ListUseCase: list, GetUseCase: get, UpdateUseCase: update, DeleteUseCase: deleteUseCase}
+}
+
+type PostContentType struct {
+	Key    string         `json:"key" validate:"required"`
+	Name   string         `json:"name" validate:"required,max=100"`
+	Fields []domain.Field `json:"fields"`
+}
+
+type PutContentType struct {
+	Key    string         `json:"key"`
+	Name   string         `json:"name" validate:"required,max=100"`
+	Fields []domain.Field `json:"fields"`
+}
+
+type contentTypeResponse struct {
+	ID        uint32         `json:"id"`
+	Key       string         `json:"key"`
+	Name      string         `json:"name"`
+	Fields    []domain.Field `json:"fields"`
+	CreatedAt time.Time      `json:"created_at"`
+	UpdatedAt time.Time      `json:"updated_at"`
+}
+
+func toResponse(contentType domain.ContentType) contentTypeResponse {
+	fields := make([]domain.Field, 0, len(contentType.Fields))
+	for _, field := range contentType.Fields {
+		if field.Options == nil {
+			field.Options = []string{}
+		}
+		fields = append(fields, field)
+	}
+	return contentTypeResponse{
+		ID:        contentType.ID,
+		Key:       contentType.Key,
+		Name:      contentType.Name,
+		Fields:    fields,
+		CreatedAt: contentType.CreatedAt,
+		UpdatedAt: contentType.UpdatedAt,
+	}
+}
+
+func writeContentTypeError(w http.ResponseWriter, err error) {
+	switch {
+	case errors.Is(err, domain.ErrContentTypeNotFound):
+		http.Error(w, apperr.ContentTypeNotFoundErrorMessage, http.StatusNotFound)
+	case errors.Is(err, domain.ErrKeyTaken):
+		http.Error(w, apperr.ContentTypeKeyTakenErrorMessage, http.StatusConflict)
+	case errors.Is(err, domain.ErrHasEntries):
+		http.Error(w, apperr.ContentTypeHasEntriesErrorMessage, http.StatusConflict)
+	case errors.Is(err, domain.ErrSchemaIncompatible):
+		http.Error(w, apperr.SchemaIncompatibleErrorMessage, http.StatusConflict)
+	case errors.Is(err, domain.ErrInvalidName):
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+	case errors.Is(err, domain.ErrInvalidKey):
+		http.Error(w, apperr.InvalidContentTypeKeyErrorMessage, http.StatusBadRequest)
+	case errors.Is(err, domain.ErrInvalidField):
+		http.Error(w, apperr.InvalidFieldErrorMessage, http.StatusUnprocessableEntity)
+	default:
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+	}
+}
+
+func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
+	found, err := h.ListUseCase.List()
+	if err != nil {
+		writeContentTypeError(w, err)
+		return
+	}
+	responses := make([]contentTypeResponse, 0, len(found))
+	for _, contentType := range found {
+		responses = append(responses, toResponse(contentType))
+	}
+	response.WriteJSON(w, http.StatusOK, responses)
+}
+
+func (h *Handler) Get(w http.ResponseWriter, r *http.Request) {
+	found, err := h.GetUseCase.Get(chi.URLParam(r, "key"))
+	if err != nil {
+		writeContentTypeError(w, err)
+		return
+	}
+	response.WriteJSON(w, http.StatusOK, toResponse(found))
+}
+
+func (h *Handler) Create(w http.ResponseWriter, r *http.Request) {
+	var request PostContentType
+	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	if err := validator.Validate.Struct(request); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	created, err := h.CreateUseCase.Create(useCases.CreateContentTypeCommand{Key: request.Key, Name: request.Name, Fields: request.Fields})
+	if err != nil {
+		writeContentTypeError(w, err)
+		return
+	}
+	response.WriteJSON(w, http.StatusCreated, toResponse(created))
+}
+
+func (h *Handler) Update(w http.ResponseWriter, r *http.Request) {
+	var request PutContentType
+	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	if err := validator.Validate.Struct(request); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	updated, err := h.UpdateUseCase.Update(useCases.UpdateContentTypeCommand{Key: chi.URLParam(r, "key"), Name: request.Name, Fields: request.Fields})
+	if err != nil {
+		writeContentTypeError(w, err)
+		return
+	}
+	response.WriteJSON(w, http.StatusOK, toResponse(updated))
+}
+
+func (h *Handler) Delete(w http.ResponseWriter, r *http.Request) {
+	if err := h.DeleteUseCase.Delete(chi.URLParam(r, "key")); err != nil {
+		writeContentTypeError(w, err)
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}