/**
 * Utility functions for environment detection
 */
/**
 * Check if code is running in a browser environment
 */
export function isBrowser() {
    return typeof window !== 'undefined' && typeof document !== 'undefined';
}
/**
 * Check if code is running in a Node.js environment
 */
export function isNode() {
    // If browser environment is detected, prioritize it over Node.js
    // This handles cases like jsdom where both window and process exist
    if (isBrowser()) {
        return false;
    }
    return (typeof process !== 'undefined' &&
        process.versions != null &&
        process.versions.node != null);
}
/**
 * Check if code is running in a Web Worker environment
 */
export function isWebWorker() {
    return (typeof self === 'object' &&
        self.constructor &&
        self.constructor.name === 'DedicatedWorkerGlobalScope');
}
/**
 * Check if Web Workers are available in the current environment
 */
export function areWebWorkersAvailable() {
    return isBrowser() && typeof Worker !== 'undefined';
}
/**
 * Check if Worker Threads are available in the current environment (Node.js)
 */
export async function areWorkerThreadsAvailable() {
    if (!isNode())
        return false;
    try {
        // Use dynamic import to avoid errors in browser environments
        await import('worker_threads');
        return true;
    }
    catch (e) {
        return false;
    }
}
/**
 * Synchronous version that doesn't actually try to load the module
 * This is safer in ES module environments
 */
export function areWorkerThreadsAvailableSync() {
    if (!isNode())
        return false;
    // In Node.js 24.4.0+, worker_threads is always available
    return parseInt(process.versions.node.split('.')[0]) >= 24;
}
/**
 * Determine if threading is available in the current environment
 * Returns true if either Web Workers (browser) or Worker Threads (Node.js) are available
 */
export function isThreadingAvailable() {
    return areWebWorkersAvailable() || areWorkerThreadsAvailableSync();
}
/**
 * Async version of isThreadingAvailable
 */
export async function isThreadingAvailableAsync() {
    return areWebWorkersAvailable() || (await areWorkerThreadsAvailable());
}
/**
 * Auto-detect production environment to minimize logging costs
 */
export function isProductionEnvironment() {
    // Node.js environment detection
    if (isNode()) {
        // Check common production environment indicators
        const nodeEnv = process.env.NODE_ENV?.toLowerCase();
        if (nodeEnv === 'production' || nodeEnv === 'prod')
            return true;
        // Google Cloud Run detection
        if (process.env.K_SERVICE || process.env.GOOGLE_CLOUD_PROJECT)
            return true;
        // AWS Lambda detection  
        if (process.env.AWS_LAMBDA_FUNCTION_NAME || process.env.AWS_EXECUTION_ENV)
            return true;
        // Azure Functions detection
        if (process.env.AZURE_FUNCTIONS_ENVIRONMENT || process.env.WEBSITE_SITE_NAME)
            return true;
        // Vercel detection
        if (process.env.VERCEL || process.env.VERCEL_ENV === 'production')
            return true;
        // Netlify detection
        if (process.env.NETLIFY && process.env.CONTEXT === 'production')
            return true;
        // Heroku detection
        if (process.env.DYNO && process.env.NODE_ENV !== 'development')
            return true;
        // Railway detection
        if (process.env.RAILWAY_ENVIRONMENT === 'production')
            return true;
        // Fly.io detection
        if (process.env.FLY_APP_NAME && process.env.FLY_REGION)
            return true;
        // Docker in production (common patterns)
        if (process.env.DOCKER_ENV === 'production' || process.env.ENVIRONMENT === 'production')
            return true;
        // Generic production indicators
        if (process.env.PROD === 'true' || process.env.PRODUCTION === 'true')
            return true;
    }
    // Browser environment - assume development unless explicitly production
    if (isBrowser()) {
        // Check for production domain patterns
        const hostname = window?.location?.hostname;
        if (hostname) {
            // Avoid logging on production domains
            if (hostname.includes('.com') || hostname.includes('.org') || hostname.includes('.net')) {
                return !hostname.includes('localhost') && !hostname.includes('127.0.0.1') && !hostname.includes('dev');
            }
        }
    }
    return false;
}
/**
 * Get appropriate log level based on environment
 */
export function getLogLevel() {
    // Explicit log level override
    const explicitLevel = process.env.BRAINY_LOG_LEVEL?.toLowerCase();
    if (explicitLevel && ['silent', 'error', 'warn', 'info', 'verbose'].includes(explicitLevel)) {
        return explicitLevel;
    }
    // Auto-detect based on environment
    if (isProductionEnvironment()) {
        return 'error'; // Only log errors in production to minimize costs
    }
    // Development environments get more verbose logging
    if (process.env.NODE_ENV === 'development' || process.env.NODE_ENV === 'dev') {
        return 'verbose';
    }
    // Test environments should be quieter
    if (process.env.NODE_ENV === 'test') {
        return 'warn';
    }
    // Default to info level
    return 'info';
}
/**
 * Check if logging should be enabled for a given level
 */
export function shouldLog(level) {
    const currentLevel = getLogLevel();
    if (currentLevel === 'silent')
        return false;
    const levels = ['error', 'warn', 'info', 'verbose'];
    const currentIndex = levels.indexOf(currentLevel);
    const messageIndex = levels.indexOf(level);
    return messageIndex <= currentIndex;
}
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