import 'package:flutter/cupertino.dart';
import 'package:please_pay_me/core/format/formatters.dart';
import 'package:please_pay_me/features/budgets/budgets_controller.dart';
import 'package:please_pay_me/features/expenses/expense_form_sheet.dart';
import 'package:please_pay_me/features/journal/journal_controller.dart';
import 'package:please_pay_me/ui/ui.dart';
import 'package:provider/provider.dart';

/// Opens the expense form and keeps the journal in sync on success.
Future<void> showExpenseFormSheet({
  required BuildContext context,
  required BudgetsController controller,
}) async {
  final selected = controller.selected;
  final journal = context.read<JournalController>();

  final saved = await showAppFormSheet<bool>(
    context: context,
    builder: (_) => ExpenseFormSheet(
      budgetName: selected?.budget.name,
      remainingToday: selected?.remainingToday,
      onSubmit: ({required amount, note, required spentAt}) => controller.addExpense(
        amount: amount,
        note: note,
        spentAt: spentAt,
      ),
    ),
  );

  if (saved != true) return;

  await journal.load(silent: true);
  if (context.mounted) {
    await showAppToast(context, message: 'Трата записана');
  }
}

Future<void> undoLastExpense({
  required BuildContext context,
  required BudgetsController controller,
}) async {
  final journal = context.read<JournalController>();
  final confirmed = await showAppAlert(
    context: context,
    title: 'Отменить последнюю трату?',
    message: 'Операция будет удалена из текущего бюджета.',
    confirmLabel: 'Отменить трату',
    cancelLabel: 'Закрыть',
    destructive: true,
  );

  if (confirmed != true) return;

  final error = await controller.undoLastExpense();
  await journal.load(silent: true);

  if (!context.mounted) return;

  await showAppToast(
    context,
    message: error ?? 'Последняя трата удалена',
    icon: error == null
        ? CupertinoIcons.arrow_uturn_left_circle_fill
        : CupertinoIcons.exclamationmark_circle_fill,
  );
}

/// Shared row renderer so the journal and the overview look identical.
String expenseTitle(String? note) => note?.trim().isNotEmpty == true ? note!.trim() : 'Без комментария';

String expenseAmount(double amount, {String currency = 'RUB'}) {
  return formatSignedMoney(amount, currency: currency);
}