/** Permission codes for SuperAdmin panel RBAC */
export const PERMISSIONS = [
  'sms:read',
  'sms:write',
  'servers:read',
  'servers:write',
  'plugins:read',
  'plugins:write',
  'support:read',
  'support:write',
  'hamkar:read',
  'hamkar:write',
  'khanegi:read',
  'khanegi:write',
  'admins:read',
  'admins:write',
  'audit:read',
  'settings:write',
] as const;

export type PermissionCode = (typeof PERMISSIONS)[number];

export const PERMISSION_SET = new Set<string>(PERMISSIONS);

export type PermissionModule = {
  key: string;
  label: string;
  read?: PermissionCode;
  write?: PermissionCode;
};

export const PERMISSION_MODULES: PermissionModule[] = [
  { key: 'sms', label: 'پیامک', read: 'sms:read', write: 'sms:write' },
  { key: 'servers', label: 'سرور', read: 'servers:read', write: 'servers:write' },
  { key: 'plugins', label: 'افزونه', read: 'plugins:read', write: 'plugins:write' },
  { key: 'support', label: 'پشتیبانی', read: 'support:read', write: 'support:write' },
  { key: 'hamkar', label: 'همکار', read: 'hamkar:read', write: 'hamkar:write' },
  { key: 'khanegi', label: 'خانگی', read: 'khanegi:read', write: 'khanegi:write' },
  { key: 'admins', label: 'مدیران', read: 'admins:read', write: 'admins:write' },
  { key: 'audit', label: 'لاگ', read: 'audit:read' },
  { key: 'settings', label: 'تنظیمات حساس', write: 'settings:write' },
];

export function parsePermissions(raw: unknown): PermissionCode[] {
  if (!Array.isArray(raw)) return [];
  const out: PermissionCode[] = [];
  for (const item of raw) {
    const code = String(item || '').trim();
    if (PERMISSION_SET.has(code)) out.push(code as PermissionCode);
  }
  return [...new Set(out)];
}

/** write implies matching read for the same module */
export function normalizePermissionList(codes: string[]): PermissionCode[] {
  const set = new Set<PermissionCode>();
  for (const code of parsePermissions(codes)) {
    set.add(code);
    if (code.endsWith(':write')) {
      const read = code.replace(/:write$/, ':read');
      if (PERMISSION_SET.has(read)) set.add(read as PermissionCode);
    }
  }
  return [...set];
}

export function isFullAccessRole(role: string | null | undefined) {
  return role === 'super_admin';
}

export function userHasPermission(
  user: { role?: string | null; permissions?: unknown },
  code: PermissionCode | string,
): boolean {
  if (isFullAccessRole(user.role)) return true;
  const list = parsePermissions(user.permissions);
  return list.includes(code as PermissionCode);
}

export function userHasAnyPermission(
  user: { role?: string | null; permissions?: unknown },
  codes: Array<PermissionCode | string>,
): boolean {
  if (isFullAccessRole(user.role)) return true;
  return codes.some((code) => userHasPermission(user, code));
}

export function userHasAllPermissions(
  user: { role?: string | null; permissions?: unknown },
  codes: Array<PermissionCode | string>,
): boolean {
  if (isFullAccessRole(user.role)) return true;
  return codes.every((code) => userHasPermission(user, code));
}

export function productReadPermission(product: string): PermissionCode {
  return product === 'hamkar' ? 'hamkar:read' : 'khanegi:read';
}

export function productWritePermission(product: string): PermissionCode {
  return product === 'hamkar' ? 'hamkar:write' : 'khanegi:write';
}