package main

import (
	"encoding/json"
	"log/slog"
	"net/http"

	"github.com/google/uuid"
)

// writeJSONError sends a standard JSON error response.
func writeJSONError(w http.ResponseWriter, logger *slog.Logger, statusCode int, message string, errType *string, errCode *string, param *string) {
	// CORRECTED: Explicitly add charset=utf-8
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.WriteHeader(statusCode)
	resp := ErrorResponse{
		Error: APIError{
			Message: message,
			Type:    errType,
			Code:    errCode,
			Param:   param,
		},
	}
	if err := json.NewEncoder(w).Encode(resp); err != nil {
		// If encoding fails, log it but we can't send another response
		logger.Error("Failed to encode error response", "error", err)
	}
}

// generateUUID creates a new UUID string.
func generateUUID() string {
	return uuid.NewString()
}

// Helper function to get string pointer
func stringPtr(s string) *string {
	if s == "" {
		return nil // Don't return pointer to empty string unless intended
	}
	return &s
}