/// Shared helpers to open Settings from app bars.
library;

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import '../providers/auth_provider.dart';
import '../screens/account_screen.dart';
import '../screens/login_screen.dart';
import '../screens/settings_screen.dart';

Widget authAppBarAction(BuildContext context) {
  final auth = context.watch<AuthController>();

  if (auth.isLoggedIn) {
    return PopupMenuButton<_AccountMenuAction>(
      tooltip: auth.displayName,
      offset: const Offset(0, 48),
      onSelected: (action) async {
        switch (action) {
          case _AccountMenuAction.account:
            await Navigator.of(context).push(
              MaterialPageRoute<void>(builder: (_) => const AccountScreen()),
            );
          case _AccountMenuAction.logout:
            await auth.logout();
        }
      },
      itemBuilder: (context) {
        final email = auth.email;
        return [
          if (email != null)
            PopupMenuItem<_AccountMenuAction>(
              enabled: false,
              child: Text(
                email,
                style: Theme.of(context).textTheme.bodySmall,
              ),
            ),
          const PopupMenuItem<_AccountMenuAction>(
            value: _AccountMenuAction.account,
            child: ListTile(
              contentPadding: EdgeInsets.zero,
              leading: Icon(Icons.person_outline),
              title: Text('Account'),
            ),
          ),
          const PopupMenuItem<_AccountMenuAction>(
            value: _AccountMenuAction.logout,
            child: ListTile(
              contentPadding: EdgeInsets.zero,
              leading: Icon(Icons.logout),
              title: Text('Sign out'),
            ),
          ),
        ];
      },
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 8),
        child: CircleAvatar(
          radius: 16,
          backgroundColor: Theme.of(context).colorScheme.primaryContainer,
          child: Text(
            auth.initials,
            style: Theme.of(context).textTheme.labelLarge?.copyWith(
                  color: Theme.of(context).colorScheme.onPrimaryContainer,
                ),
          ),
        ),
      ),
    );
  }

  return IconButton(
    tooltip: 'Sign in',
    onPressed: () {
      Navigator.of(context).push(
        MaterialPageRoute<bool>(builder: (_) => const LoginScreen()),
      );
    },
    icon: const Icon(Icons.person_outline),
  );
}

enum _AccountMenuAction { account, logout }

List<Widget> bankAppBarActions({
  required BuildContext context,
  VoidCallback? onRefresh,
  bool refreshing = false,
}) {
  return [
    if (onRefresh != null)
      IconButton(
        tooltip: 'Refresh',
        onPressed: refreshing ? null : onRefresh,
        icon: const Icon(Icons.refresh),
      ),
    authAppBarAction(context),
    IconButton(
      tooltip: 'Settings',
      onPressed: () {
        Navigator.of(context).push(
          MaterialPageRoute<void>(builder: (_) => const SettingsScreen()),
        );
      },
      icon: const Icon(Icons.settings_outlined),
    ),
  ];
}