import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:patbond_flutter/core/theme/app_theme.dart';
import 'package:patbond_flutter/features/auth/register_page.dart';

import '../../helpers/auth_test_helpers.dart';

void main() {
  Future<void> pumpRegister(
    WidgetTester tester,
    FakeAuthRepository repository,
  ) {
    return tester.pumpWidget(
      MaterialApp(
        theme: buildAppTheme(),
        home: RegisterPage(authRepository: repository),
      ),
    );
  }

  testWidgets('渲染四个字段与 helperText，不渲染任何预留区', (tester) async {
    await pumpRegister(tester, FakeAuthRepository());

    expect(find.text('创建账号'), findsOneWidget);
    expect(find.byType(TextFormField), findsNWidgets(4));
    expect(find.text('密码 8–32 位，需包含字母和数字'), findsOneWidget);
    // ADR-004：短信验证码与第三方登录预留区不渲染。
    expect(find.textContaining('验证码'), findsNothing);
    expect(find.text('注册'), findsOneWidget);
    expect(find.text('直接登录'), findsOneWidget);
  });

  testWidgets('空表单提交：非空校验拦截，不发请求', (tester) async {
    final repository = FakeAuthRepository();
    await pumpRegister(tester, repository);

    await tester.tap(find.text('注册'));
    await tester.pump();

    expect(find.text('请输入用户名'), findsOneWidget);
    expect(find.text('请输入手机号'), findsOneWidget);
    expect(find.text('密码需 8–32 位，且同时包含字母和数字'), findsOneWidget);
    expect(repository.registerCalls, 0);
  });

  testWidgets('格式校验：用户名/手机号/密码/确认密码逐项报错', (tester) async {
    final repository = FakeAuthRepository();
    await pumpRegister(tester, repository);

    await tester.enterText(find.byType(TextFormField).at(0), '1abc');
    await tester.enterText(find.byType(TextFormField).at(1), '23800138000');
    await tester.enterText(find.byType(TextFormField).at(2), 'abcdefgh');
    await tester.enterText(find.byType(TextFormField).at(3), 'abcdefg1');
    await tester.tap(find.text('注册'));
    await tester.pump();

    expect(find.text('用户名需 3–20 位，字母开头，可含数字和下划线'), findsOneWidget);
    expect(find.text('请输入正确的 11 位手机号'), findsOneWidget);
    expect(find.text('密码需 8–32 位，且同时包含字母和数字'), findsOneWidget);
    expect(find.text('两次输入的密码不一致'), findsOneWidget);
    expect(repository.registerCalls, 0);
  });

  testWidgets('全部合法：提交调用注册接口', (tester) async {
    final repository = FakeAuthRepository();
    await pumpRegister(tester, repository);

    await tester.enterText(find.byType(TextFormField).at(0), 'gunnar');
    await tester.enterText(find.byType(TextFormField).at(1), '13800138000');
    await tester.enterText(find.byType(TextFormField).at(2), 'passw0rd');
    await tester.enterText(find.byType(TextFormField).at(3), 'passw0rd');
    await tester.tap(find.text('注册'));
    await tester.pumpAndSettle();

    expect(repository.registerCalls, 1);
    expect(find.text('两次输入的密码不一致'), findsNothing);
  });
}