/**
 * Custom error types for Brainy operations
 * Provides better error classification and handling
 */
/**
 * Custom error class for Brainy operations
 * Provides error type classification and retry information
 */
export class BrainyError extends Error {
    constructor(message, type, retryable = false, originalError, attemptNumber, maxRetries) {
        super(message);
        this.name = 'BrainyError';
        this.type = type;
        this.retryable = retryable;
        this.originalError = originalError;
        this.attemptNumber = attemptNumber;
        this.maxRetries = maxRetries;
        // Maintain proper stack trace for where our error was thrown (only available on V8)
        if (Error.captureStackTrace) {
            Error.captureStackTrace(this, BrainyError);
        }
    }
    /**
     * Create a timeout error
     */
    static timeout(operation, timeoutMs, originalError) {
        return new BrainyError(`Operation '${operation}' timed out after ${timeoutMs}ms`, 'TIMEOUT', true, originalError);
    }
    /**
     * Create a network error
     */
    static network(message, originalError) {
        return new BrainyError(`Network error: ${message}`, 'NETWORK', true, originalError);
    }
    /**
     * Create a storage error
     */
    static storage(message, originalError) {
        return new BrainyError(`Storage error: ${message}`, 'STORAGE', true, originalError);
    }
    /**
     * Create a not found error
     */
    static notFound(resource) {
        return new BrainyError(`Resource not found: ${resource}`, 'NOT_FOUND', false);
    }
    /**
     * Create a retry exhausted error
     */
    static retryExhausted(operation, maxRetries, lastError) {
        return new BrainyError(`Operation '${operation}' failed after ${maxRetries} retry attempts`, 'RETRY_EXHAUSTED', false, lastError, maxRetries, maxRetries);
    }
    /**
     * Check if an error is retryable
     */
    static isRetryable(error) {
        if (error instanceof BrainyError) {
            return error.retryable;
        }
        // Check for common retryable error patterns
        const message = error.message.toLowerCase();
        const name = error.name.toLowerCase();
        // Network-related errors that are typically retryable
        if (message.includes('timeout') ||
            message.includes('network') ||
            message.includes('connection') ||
            message.includes('econnreset') ||
            message.includes('enotfound') ||
            message.includes('etimedout') ||
            name.includes('timeout')) {
            return true;
        }
        // AWS SDK specific retryable errors
        if (message.includes('throttling') ||
            message.includes('rate limit') ||
            message.includes('service unavailable') ||
            message.includes('internal server error') ||
            message.includes('bad gateway') ||
            message.includes('gateway timeout')) {
            return true;
        }
        return false;
    }
    /**
     * Convert a generic error to a BrainyError with appropriate classification
     */
    static fromError(error, operation) {
        if (error instanceof BrainyError) {
            return error;
        }
        const message = error.message.toLowerCase();
        const name = error.name.toLowerCase();
        // Classify the error based on common patterns
        if (message.includes('timeout') || name.includes('timeout')) {
            return BrainyError.timeout(operation || 'unknown', 0, error);
        }
        if (message.includes('network') ||
            message.includes('connection') ||
            message.includes('econnreset') ||
            message.includes('enotfound') ||
            message.includes('etimedout')) {
            return BrainyError.network(error.message, error);
        }
        if (message.includes('nosuchkey') ||
            message.includes('not found') ||
            message.includes('does not exist')) {
            return BrainyError.notFound(operation || 'resource');
        }
        // Default to storage error for unclassified errors
        return BrainyError.storage(error.message, error);
    }
}
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