/**
 * Centralized permission broker — screens must request permissions through
 * these helpers, never react-native-permissions directly.
 */
import {
  check,
  request,
  RESULTS,
  PermissionStatus,
  openSettings,
  PERMISSIONS,
  Permission,
  checkNotifications,
  requestNotifications,
} from 'react-native-permissions';
import { Platform } from 'react-native';
import { logger } from '../core/observability/logger';

// Normalize permission for platform
const normalizePermission = (perm: string): Permission => {
  return Platform.select({
    ios: (PERMISSIONS.IOS as Record<string, string>)[perm] || perm,
    android: (PERMISSIONS.ANDROID as Record<string, string>)[perm] || perm,
    default: perm,
  }) as Permission;
};

// Generic permission requester
export const requestSinglePermission = async (
  permission: string
): Promise<boolean> => {
  const normalized = normalizePermission(permission);

  const status: PermissionStatus = await check(normalized);

  if (status === RESULTS.GRANTED) {
    return true;
  }

  if (status === RESULTS.BLOCKED) {
    logger.info('permissions', `${permission} is blocked — opening settings`);
    openSettings();
    return false;
  }

  if (status === RESULTS.DENIED || status === RESULTS.LIMITED) {
    const result: PermissionStatus = await request(normalized);
    return result === RESULTS.GRANTED;
  }

  return false;
};

export const requestNotificationPermission = async (): Promise<boolean> => {
  if (Platform.OS !== 'android') {
    return true;
  }

  const { status } = await checkNotifications();

  if (status === RESULTS.GRANTED) {
    return true;
  }

  if (status === RESULTS.BLOCKED) {
    logger.info('permissions', 'notifications blocked — opening settings');
    openSettings();
    return false;
  }

  if (status === RESULTS.DENIED) {
    const { status: result } = await requestNotifications(['alert', 'sound']);
    return result === RESULTS.GRANTED;
  }

  return false;
};

export const isAnyPermissionGranted = async (permissions: Permission[]): Promise<boolean> => {
  for (const permission of permissions) {
    const result = await check(permission);

    if (result === RESULTS.GRANTED) {
      return true; // At least one permission is granted
    }
  }

  return false; // No permissions granted
};

export async function checkPermission(permission: Permission) {
  try {
    const result = await check(permission);
    return result === RESULTS.GRANTED;
  } catch (error) {
    logger.warn('permissions', 'permission check failed', { error: String(error) });
    return false;
  }
}