first commit

Made-with: Cursor

internal/utils/response.go

@@ -0,0 +1,44 @@
+package utils
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/calendarapi/internal/models"
+)
+
+func WriteJSON(w http.ResponseWriter, status int, data interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(data)
+}
+
+func WriteError(w http.ResponseWriter, err error) {
+	if appErr, ok := models.IsAppError(err); ok {
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(appErr.Status)
+		json.NewEncoder(w).Encode(appErr)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusInternalServerError)
+	json.NewEncoder(w).Encode(models.ErrInternal)
+}
+
+func WriteOK(w http.ResponseWriter) {
+	WriteJSON(w, http.StatusOK, map[string]bool{"ok": true})
+}
+
+func WriteList(w http.ResponseWriter, items interface{}, page models.PageInfo) {
+	WriteJSON(w, http.StatusOK, models.ListResponse{Items: items, Page: page})
+}
+
+func DecodeJSON(r *http.Request, dst interface{}) error {
+	if r.Body == nil {
+		return models.NewValidationError("request body required")
+	}
+	if err := json.NewDecoder(r.Body).Decode(dst); err != nil {
+		return models.NewValidationError("invalid JSON: " + err.Error())
+	}
+	return nil
+}