/// Shared UI helpers for bank connect actions.
library;

import 'package:flutter/material.dart';

import '../providers/bank_provider.dart';
import '../screens/bank_auth_screen.dart';

Future<void> runConnectBank(BuildContext context, BankController bank) async {
  final start = await bank.beginConnect();
  if (!context.mounted) return;

  if (start == null) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text(bank.error ?? 'Could not start bank connect')),
    );
    return;
  }

  final result = await Navigator.of(context).push<BankAuthResult>(
    MaterialPageRoute(
      builder: (_) => BankAuthScreen(
        authUrl: start.authUrl,
        pendingState: start.state,
      ),
    ),
  );

  if (!context.mounted) return;
  if (result == null) return;

  if (result.error != null && result.error!.isNotEmpty) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text('Bank auth failed: ${result.error}')),
    );
    return;
  }

  if (!result.hasCode) {
    ScaffoldMessenger.of(context).showSnackBar(
      const SnackBar(content: Text('Bank redirect missing code')),
    );
    return;
  }

  final linked = await bank.completeWithCode(
    code: result.code!,
    state: result.state,
  );
  if (!context.mounted) return;

  ScaffoldMessenger.of(context).showSnackBar(
    SnackBar(
      content: Text(
        linked ? 'Bank linked' : (bank.error ?? 'Could not complete connect'),
      ),
    ),
  );
}