frontend/src/utils/apiConfig.js

/**
 * Utility to determine the API base URL for the application.
 * Using relative paths in production ensures the application works 
 * seamlessly regardless of the Hugging Face Space URL and eliminates CORS issues.
 */

const getApiBaseUrl = () => {
    // In production, default to relative paths
    if (process.env.NODE_ENV === "production") {
        // If an explicit API URL is provided via env, use it.
        // Otherwise, return empty string for relative paths.
        return process.env.REACT_APP_API_URL || "";
    }
    
    // In development, default to the local backend port
    return process.env.REACT_APP_API_URL || "http://localhost:7860";
};

/**
 * Returns the full API URL by appending the /api prefix
 */
export const getFullApiUrl = () => {
    const baseUrl = getApiBaseUrl();
    // If baseUrl is empty, it means we are using relative paths
    if (baseUrl === "") return "/api";
    // Ensure we don't end up with //api if baseUrl ends with /
    return `${baseUrl.replace(/\/$/, "")}/api`;
};

export default getApiBaseUrl;