import { loadConfig } from '../config/index.js';
import type { Config } from '../config/index.js';
import { resolve } from 'path';
import { homedir } from 'os';

/** Get the config file path from env or default location. */
export function getConfigPath(): string {
  return process.env.FLYNN_CONFIG ?? resolve(homedir(), '.config/flynn/config.yaml');
}

/** Get the data directory path. */
export function getDataDir(): string {
  return resolve(homedir(), '.local/share/flynn');
}

/** Load config without throwing. Returns { config } or { error }. */
export function loadConfigSafe(configPath?: string): { config?: Config; error?: string } {
  const path = configPath ?? getConfigPath();
  try {
    const config = loadConfig(path);
    return { config };
  } catch (error) {
    const message = error instanceof Error ? error.message : String(error);
    return { error: `Failed to load config from ${path}: ${message}` };
  }
}

/** Deep-clone config and replace sensitive fields with '***'. */
export function redactSecrets(config: Record<string, unknown>): Record<string, unknown> {
  const sensitiveKeys = ['bot_token', 'api_key', 'auth_token'];

  function redact(obj: unknown): unknown {
    if (obj === null || obj === undefined) return obj;
    if (Array.isArray(obj)) return obj.map(redact);
    if (typeof obj === 'object') {
      const result: Record<string, unknown> = {};
      for (const [key, value] of Object.entries(obj as Record<string, unknown>)) {
        if (sensitiveKeys.includes(key) && typeof value === 'string') {
          result[key] = '***';
        } else {
          result[key] = redact(value);
        }
      }
      return result;
    }
    return obj;
  }

  return redact(config) as Record<string, unknown>;
}

/** Format output for terminal display. */
export function formatStatus(
  status: 'pass' | 'fail' | 'warn' | 'skip',
  label: string,
  detail?: string,
): string {
  const icons: Record<string, string> = {
    pass: '\x1b[32m[PASS]\x1b[0m',
    fail: '\x1b[31m[FAIL]\x1b[0m',
    warn: '\x1b[33m[WARN]\x1b[0m',
    skip: '\x1b[2m[SKIP]\x1b[0m',
  };
  const suffix = detail ? ` ${detail}` : '';
  return `${icons[status]} ${label}${suffix}`;
}