import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:jiu_client/core/auth/auth_state.dart';
import 'package:jiu_client/core/config/license_copy.dart';
import 'package:jiu_client/core/theme/themes.dart';
import 'package:jiu_client/models/license.dart';
import 'package:jiu_client/providers/license_provider.dart';
import 'package:jiu_client/widgets/write_guard.dart';

/// 用固定 LicenseInfo（含指定 phase）填充 licenseProvider 的 Fake Notifier。
class _FakeLicenseNotifier extends LicenseNotifier {
  final LicenseInfo? _value;
  _FakeLicenseNotifier(this._value);

  @override
  Future<LicenseInfo?> build() async => _value;
}

LicenseInfo _lic(String phase, {int expiredDays = 0}) => LicenseInfo(
      id: 1,
      type: 'annual',
      isActive: true,
      maxDevices: 3,
      phase: phase,
      expiresAt: DateTime.now().subtract(Duration(days: expiredDays)),
    );

/// 把一个带 onPressed 的按钮包进 WriteGuard，按 role + license phase 覆写 provider。
Widget _harness({
  required bool readonly,
  LicenseInfo? lic,
  required VoidCallback onPressed,
}) {
  return ProviderScope(
    overrides: [
      isReadonlyProvider.overrideWithValue(readonly),
      licenseProvider.overrideWith(() => _FakeLicenseNotifier(lic)),
    ],
    child: MaterialApp(
      theme: buildTheme('a'),
      home: Scaffold(
        body: WriteGuard(
          child: ElevatedButton(
            onPressed: onPressed,
            child: const Text('新建'),
          ),
        ),
      ),
    ),
  );
}

void main() {
  testWidgets('只读角色：按钮隐藏（findsNothing）', (tester) async {
    var tapped = false;
    await tester.pumpWidget(
      _harness(readonly: true, lic: _lic('normal'), onPressed: () => tapped = true),
    );
    await tester.pumpAndSettle();

    expect(find.text('新建'), findsNothing);
    expect(tapped, isFalse);
  });

  testWidgets('operator + normal：按钮可见且可点', (tester) async {
    var tapped = false;
    await tester.pumpWidget(
      _harness(readonly: false, lic: _lic('normal'), onPressed: () => tapped = true),
    );
    await tester.pumpAndSettle();

    expect(find.text('新建'), findsOneWidget);
    await tester.tap(find.text('新建'));
    await tester.pump();
    expect(tapped, isTrue);
  });

  testWidgets('operator + grace（宽限期）：按钮可见且可点', (tester) async {
    var tapped = false;
    await tester.pumpWidget(
      _harness(
        readonly: false,
        lic: _lic('grace', expiredDays: 3),
        onPressed: () => tapped = true,
      ),
    );
    await tester.pumpAndSettle();

    expect(find.text('新建'), findsOneWidget);
    await tester.tap(find.text('新建'));
    await tester.pump();
    expect(tapped, isTrue);
  });

  testWidgets('operator + readonly（过期>7天）：按钮可见但禁用，点击弹提示且不触发 onPressed',
      (tester) async {
    var tapped = false;
    final lic = _lic('readonly', expiredDays: 10);
    await tester.pumpWidget(
      _harness(readonly: false, lic: lic, onPressed: () => tapped = true),
    );
    await tester.pumpAndSettle();

    // 按钮仍渲染（不隐藏），但被 IgnorePointer + Opacity 包裹禁用。
    expect(find.text('新建'), findsOneWidget);
    expect(find.byType(IgnorePointer), findsWidgets);
    expect(find.byType(Opacity), findsWidgets);

    // 点击覆盖层弹出原因提示，且 onPressed 未被调用。
    // 覆盖层（GestureDetector）盖在按钮上，命中的是覆盖层而非按钮文字，故 warnIfMissed:false。
    await tester.tap(find.text('新建'), warnIfMissed: false);
    await tester.pumpAndSettle();

    expect(tapped, isFalse);
    expect(find.text(LicenseCopy.writeBlockedToast(lic)), findsOneWidget);
  });

  testWidgets('operator + locked（过期>15天）：按钮可见但禁用，弹锁定提示', (tester) async {
    var tapped = false;
    final lic = _lic('locked', expiredDays: 20);
    await tester.pumpWidget(
      _harness(readonly: false, lic: lic, onPressed: () => tapped = true),
    );
    await tester.pumpAndSettle();

    expect(find.text('新建'), findsOneWidget);
    await tester.tap(find.text('新建'), warnIfMissed: false);
    await tester.pumpAndSettle();

    expect(tapped, isFalse);
    expect(find.text(LicenseCopy.writeBlockedToast(lic)), findsOneWidget);
  });
}