/// 分享二维码对话框 widget 测试（UI-01 §4.5 分层重构）。
///
/// 覆盖：分层结构（相册标题 → 白底二维码 → URL 文本 → 复制为主/浏览器
/// 打开为次）、QrImageView 以 viewer URL（{VIEWER_BASE}/a/{token}）渲染、
/// 复制按钮写入剪贴板并提示、「在浏览器中打开」经注入的替身启动器
/// 打开 URL 并关闭对话框。
library;

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:photo_live/core/config.dart';
import 'package:photo_live/l10n/app_localizations.dart';
import 'package:photo_live/pages/share_qr_dialog.dart';
import 'package:qr_flutter/qr_flutter.dart';

void main() {
  const token = 'sharetoken000000000001';

  Future<void> pumpDialog(
    WidgetTester tester, {
    String? albumTitle,
    UrlLauncher? launcher,
  }) async {
    await tester.pumpWidget(
      ProviderScope(
        overrides: [
          if (launcher != null)
            urlLauncherProvider.overrideWith((ref) => launcher),
        ],
        child: MaterialApp(
          localizationsDelegates: AppLocalizations.localizationsDelegates,
          supportedLocales: AppLocalizations.supportedLocales,
          // 复制提示走 ScaffoldMessenger：包一层 Scaffold 供 SnackBar 挂载。
          home: Scaffold(
            body: Center(
              child: ShareQrDialog(
                publicToken: token,
                albumTitle: albumTitle,
              ),
            ),
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  testWidgets('分层渲染：相册标题 → 二维码（data 为观众链接）→ URL 文本',
      (tester) async {
    await pumpDialog(tester, albumTitle: 'Opening Gala');

    final url = ApiConfig.viewerAlbumUrl(token);
    // qr_flutter 4.1 未公开 QrImageView.data（私有 _data），以同源的
    // SelectableText 文本断言 URL 构造（二维码与文本同用该局部变量）。
    expect(find.byType(QrImageView), findsOneWidget);
    expect(
      tester.widget<SelectableText>(find.byType(SelectableText)).data,
      url,
    );
    expect(url, 'http://10.0.2.2:5175/a/$token');
    // 分层：主标题 = 相册名，副标题 = 通用标题，脚注 = 扫码/链接提示。
    expect(find.text('Opening Gala'), findsOneWidget);
    expect(find.text('Share QR code'), findsOneWidget);
    expect(find.text('Scan the code or open the link to view'), findsOneWidget);
  });

  testWidgets('复制按钮（主操作）→ 剪贴板收到 URL + 已复制提示', (tester) async {
    final clipboardCalls = <MethodCall>[];
    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
      SystemChannels.platform,
      (call) async {
        clipboardCalls.add(call);
        return null;
      },
    );

    await pumpDialog(tester);
    await tester.tap(find.text('Copy link'));
    await tester.pumpAndSettle();

    final url = ApiConfig.viewerAlbumUrl(token);
    expect(
      clipboardCalls.any(
        (c) =>
            c.method == 'Clipboard.setData' &&
            (c.arguments as Map<String, dynamic>)['text'] == url,
      ),
      isTrue,
    );
    expect(find.text('Copied'), findsOneWidget);
  });

  testWidgets('在浏览器中打开（次操作）→ 启动器收到 URL + 关闭对话框',
      (tester) async {
    final launchedUrls = <String>[];
    await pumpDialog(
      tester,
      launcher: (url) async {
        launchedUrls.add(url);
        return true;
      },
    );

    await tester.tap(find.text('Open in browser'));
    await tester.pumpAndSettle();

    expect(launchedUrls, [ApiConfig.viewerAlbumUrl(token)]);
    expect(find.byType(ShareQrDialog), findsNothing, reason: '打开成功后关闭');
  });
}