feat: custom content types backend

api/pkg/apperr/messages.go

@@ -86,3 +86,12 @@ const ArticleSlugTakenErrorMessage = "slug_taken"
 const ArticleImageNotFoundErrorMessage = "image_not_found"
 const InvalidTitleTemplateErrorMessage = "invalid_title_template"
 const SlugSuggestionHeader = "X-Slug-Suggestion"
+
+const ContentTypeNotFoundErrorMessage = "content_type_not_found"
+const ContentTypeKeyTakenErrorMessage = "content_type_key_taken"
+const ContentTypeHasEntriesErrorMessage = "content_type_has_entries"
+const InvalidContentTypeKeyErrorMessage = "invalid_content_type_key"
+const InvalidFieldErrorMessage = "invalid_field"
+const SchemaIncompatibleErrorMessage = "schema_incompatible"
+const EntryNotFoundErrorMessage = "entry_not_found"
+const InvalidEntryErrorMessage = "invalid_entry"

api/pkg/response/json.go

@@ -0,0 +1,21 @@
+package response
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+)
+
+func WriteJSON(w http.ResponseWriter, status int, payload any) {
+	body, err := json.Marshal(payload)
+	if err != nil {
+		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		return
+	}
+	if status != http.StatusOK {
+		w.WriteHeader(status)
+	}
+	if _, err := w.Write(body); err != nil {
+		log.Printf("Failed to write response: %v", err)
+	}
+}