import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';

import 'package:flutter_test/flutter_test.dart';
import 'package:reelbox/data/models.dart';
import 'package:reelbox/media/media_platform.dart';
import 'package:reelbox/media/player_page.dart';
import 'package:reelbox/state/app_state.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'cast_media_share_test.dart' show syntheticPackage, fetch;

class _LocalNetwork extends HttpOverrides {}

void main() {
  testWidgets(
    'disposing an offline route keeps its real loopback lease until native exit',
    (tester) async {
      final root = await tester.runAsync(
        () => Directory.systemTemp.createTemp('native-offline-route-'),
      );
      final package = await tester.runAsync(() => syntheticPackage(root!));
      SharedPreferences.setMockInitialValues({});
      final app = AppState(storage: await SharedPreferences.getInstance());
      await app.initialize(discover: false);
      const title = TitleRecord(id: 98, title: 'Offline fixture');
      const source = MediaSource(
        url: 'https://media.test/source.m3u8',
        type: 'hls',
      );
      await app.recordWatch(
        title,
        sourceUrl: source.url,
        positionSeconds: 600,
        durationSeconds: 3600,
      );
      final exit = Completer<Map<String, dynamic>>();
      final opened = Completer<Uri>();
      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
        MediaPlatform.channel,
        (call) async {
          if (call.method != 'openNativePlayer') return null;
          opened.complete(Uri.parse((call.arguments as Map)['url'] as String));
          return exit.future;
        },
      );
      addTearDown(() async {
        if (!exit.isCompleted) {
          exit.complete({
            'positionMs': 0,
            'durationMs': 0,
            'opened': false,
            'completed': false,
          });
        }
        await tester.runAsync(
          () => Future<void>.delayed(const Duration(milliseconds: 20)),
        );
        tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
          MediaPlatform.channel,
          null,
        );
        app.dispose();
        await tester.runAsync(() => root!.delete(recursive: true));
      });
      await tester.runAsync(
        () => tester.pumpWidget(
          AppScope(
            state: app,
            child: MaterialApp(
              home: PlayerPage(
                title: title,
                source: source,
                localFile: package!.path,
              ),
            ),
          ),
        ),
      );
      for (var attempt = 0; attempt < 100 && !opened.isCompleted; attempt++) {
        await tester.runAsync(
          () => Future<void>.delayed(const Duration(milliseconds: 10)),
        );
        await tester.pump();
      }
      expect(
        opened.isCompleted,
        true,
        reason: 'Offline preparation must dispatch a native open',
      );
      final uri = await tester.runAsync(
        () => opened.future.timeout(const Duration(seconds: 2)),
      );
      expect(uri!.host, '127.0.0.1');
      final before = await tester.runAsync(
        () => HttpOverrides.runWithHttpOverrides(
          () => fetch(uri),
          _LocalNetwork(),
        ),
      );
      expect(before!.status, 200);
      await tester.pumpWidget(const SizedBox());
      final after = await tester.runAsync(
        () => HttpOverrides.runWithHttpOverrides(
          () => fetch(uri),
          _LocalNetwork(),
        ),
      );
      expect(
        after!.status,
        200,
        reason: 'The native activity is still reading this offline package',
      );
      exit.complete({
        'positionMs': 1200000,
        'durationMs': 3600000,
        'opened': true,
        'completed': false,
      });
      await tester.pump();
      await tester.runAsync(
        () => Future<void>.delayed(const Duration(milliseconds: 20)),
      );
      await tester.runAsync(
        () => HttpOverrides.runWithHttpOverrides(() async {
          await expectLater(fetch(uri), throwsA(isA<SocketException>()));
        }, _LocalNetwork()),
      );
      expect(
        app.history.single.positionSeconds,
        600,
        reason: 'Disposed routes must not save stale native results',
      );
      expect(tester.takeException(), isNull);
    },
    variant: TargetPlatformVariant.only(TargetPlatform.android),
  );
}