/// 分享二维码对话框 widget 测试（P3 计划 Task 4）。
///
/// 覆盖：QrImageView 以 viewer URL（{VIEWER_BASE}/a/{token}）渲染、
/// URL 文本可见、复制按钮写入剪贴板并提示。
library;

import 'package:flutter/material.dart';
import 'package:flutter/services.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) async {
    await tester.pumpWidget(
      MaterialApp(
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        // 复制提示走 ScaffoldMessenger：包一层 Scaffold 供 SnackBar 挂载。
        home: const Scaffold(
          body: Center(child: ShareQrDialog(publicToken: token)),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  testWidgets('渲染 QrImageView，data 为观众链接；URL 文本可见', (tester) async {
    await pumpDialog(tester);

    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');
    expect(find.text('Scan the code or open the link to view'), findsOneWidget);
  });

  testWidgets('复制按钮 → 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);
  });
}