fixes

pkg/errors/response.go

@@ -0,0 +1,90 @@
+package errors
+
+import (
+	"net/http"
+	"time"
+
+	json "github.com/goccy/go-json"
+)
+
+// Response is the standard API response envelope
+type Response struct {
+	Success  bool           `json:"success"`
+	Data     interface{}    `json:"data,omitempty"`
+	Error    *ErrorResponse `json:"error,omitempty"`
+	Metadata *ResponseMeta  `json:"metadata,omitempty"`
+}
+
+// ErrorResponse contains error details
+type ErrorResponse struct {
+	Code    string      `json:"code"`
+	Message string      `json:"message"`
+	Details interface{} `json:"details,omitempty"`
+	Trace   []string    `json:"trace,omitempty"`
+}
+
+// ResponseMeta contains request metadata
+type ResponseMeta struct {
+	RequestID string `json:"request_id"`
+	Timestamp string `json:"timestamp"`
+	Duration  string `json:"duration,omitempty"`
+	Version   string `json:"version"`
+}
+
+// WriteJSON writes a success response as JSON
+func WriteJSON(w http.ResponseWriter, statusCode int, data interface{}, meta *ResponseMeta) {
+	response := Response{
+		Success:  statusCode < 400,
+		Data:     data,
+		Metadata: meta,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(statusCode)
+
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		// Fallback to simple error response
+		http.Error(w, `{"success":false,"error":{"code":"ENCODING_ERROR","message":"Failed to encode response"}}`, http.StatusInternalServerError)
+	}
+}
+
+// WriteError writes an error response as JSON
+func WriteError(w http.ResponseWriter, statusCode int, err *Error, meta *ResponseMeta) {
+	errResp := &ErrorResponse{
+		Code:    err.Code,
+		Message: err.Message,
+		Details: err.Details,
+		Trace:   err.Trace,
+	}
+
+	response := Response{
+		Success:  false,
+		Error:    errResp,
+		Metadata: meta,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(statusCode)
+
+	if encErr := json.NewEncoder(w).Encode(response); encErr != nil {
+		// Fallback to simple error response
+		http.Error(w, `{"success":false,"error":{"code":"ENCODING_ERROR","message":"Failed to encode error response"}}`, http.StatusInternalServerError)
+	}
+}
+
+// WriteErrorSimple writes an error without metadata
+func WriteErrorSimple(w http.ResponseWriter, err *Error) {
+	statusCode := GetHTTPStatus(err.Code)
+	meta := &ResponseMeta{
+		Timestamp: time.Now().UTC().Format(time.RFC3339),
+	}
+	WriteError(w, statusCode, err, meta)
+}
+
+// WriteJSONSimple writes a success response without metadata
+func WriteJSONSimple(w http.ResponseWriter, statusCode int, data interface{}) {
+	meta := &ResponseMeta{
+		Timestamp: time.Now().UTC().Format(time.RFC3339),
+	}
+	WriteJSON(w, statusCode, data, meta)
+}