import 'dart:convert';
import 'dart:io';
import 'dart:ui' as ui;

import 'package:fancake/features/galaxy/galaxy_data.dart';
import 'package:fancake/features/galaxy/widgets/galaxy_mini_map.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

/// 프로토타입 v6.2 와 나란히 볼 미니맵 캡처. `MINIMAP_OUT=<폴더>` 일 때만 PNG 를 쓴다.
///   MINIMAP_OUT=build/minimap fvm flutter test test/galaxy_mini_map_capture_test.dart
/// 표본은 프로토타입 `FPI_DATA` 5행성 — 같은 데이터로 두 장면을 비교한다.
const protoPlanets = [
  PlanetNode(
    id: '1',
    name: 'NewJeans',
    rank: 1,
    fpi: 3200,
    members: 1,
    online: 4820,
    isMine: true,
  ),
  PlanetNode(
    id: '2',
    name: 'BTS',
    rank: 2,
    fpi: 2800,
    members: 1,
    online: 12540,
  ),
  PlanetNode(
    id: '3',
    name: 'aespa',
    rank: 3,
    fpi: 2100,
    members: 1,
    online: 3910,
  ),
  PlanetNode(
    id: '4',
    name: 'IVE',
    rank: 4,
    fpi: 1700,
    members: 1,
    online: 2840,
  ),
  PlanetNode(
    id: '5',
    name: 'PLAVE',
    rank: 5,
    fpi: 1300,
    members: 1,
    online: 5120,
  ),
];

/// 내 행성이 3위인 경우(C-103 — 1위가 아니어도 내 행성이 가운데).
List<PlanetNode> mineAt(int rank) => [
  for (final p in protoPlanets)
    PlanetNode(
      id: p.id,
      name: p.name,
      rank: p.rank,
      fpi: p.fpi,
      members: p.members,
      online: p.online,
      isMine: p.rank == rank,
    ),
];

/// 테스트 기본 글꼴(Ahem 네모) 대신 앱 글꼴로 글자 폭을 잰다.
Future<void> loadAppFonts() async {
  final manifest =
      json.decode(await rootBundle.loadString('FontManifest.json')) as List;
  for (final font in manifest.cast<Map<String, dynamic>>()) {
    final loader = FontLoader(font['family'] as String);
    for (final f in (font['fonts'] as List).cast<Map<String, dynamic>>()) {
      loader.addFont(rootBundle.load(Uri.decodeFull(f['asset'] as String)));
    }
    await loader.load();
  }
}

void main() {
  final out = Platform.environment['MINIMAP_OUT'];
  if (out == null) return;
  setUpAll(() async {
    Directory(out).createSync(recursive: true);
    await loadAppFonts();
  });

  for (final (name, planets, size) in [
    ('minimap-140-mine1', protoPlanets, 140.0),
    ('minimap-140-mine3', mineAt(3), 140.0),
    ('minimap-360-mine1', protoPlanets, 360.0),
    // Figma 「홈」(2097:16428) 실측 박스 약 93pt — C-105 140pt 와 비교용.
    ('after_93', protoPlanets, 93.0),
    ('after_93-mine3', mineAt(3), 93.0),
  ]) {
    testWidgets(name, (tester) async {
      final key = GlobalKey();
      await tester.pumpWidget(
        MaterialApp(
          home: Center(
            child: RepaintBoundary(
              key: key,
              child: GalaxyMiniMap(
                data: GalaxySnapshot(planets: planets, myPop: 0),
                onOpen: () {},
                size: size,
              ),
            ),
          ),
        ),
      );
      await tester.pump();
      await tester.runAsync(() async {
        final boundary =
            key.currentContext!.findRenderObject()! as RenderRepaintBoundary;
        final image = await boundary.toImage(pixelRatio: 3);
        final bytes = await image.toByteData(format: ui.ImageByteFormat.png);
        File('$out/$name.png').writeAsBytesSync(bytes!.buffer.asUint8List());
      });
    });
  }

  // HOME 「GALAXY 맵 확장」(`343:211127`) — 히어로 안 맵 영역 375×556.
  for (final (name, planets) in [
    ('expanded_v2_app_mine1', protoPlanets),
    ('expanded_v2_app_mine3', mineAt(3)),
  ]) {
    testWidgets(name, (tester) async {
      final key = GlobalKey();
      await tester.pumpWidget(
        MaterialApp(
          home: Center(
            child: RepaintBoundary(
              key: key,
              child: SizedBox(
                width: 375,
                height: 556,
                child: GalaxyMiniMap.expanded(
                  data: GalaxySnapshot(planets: planets, myPop: 0),
                  onOpenPlanet: (_) {},
                ),
              ),
            ),
          ),
        ),
      );
      await tester.pump();
      await tester.runAsync(() async {
        final boundary =
            key.currentContext!.findRenderObject()! as RenderRepaintBoundary;
        final image = await boundary.toImage(pixelRatio: 3);
        final bytes = await image.toByteData(format: ui.ImageByteFormat.png);
        File('$out/$name.png').writeAsBytesSync(bytes!.buffer.asUint8List());
      });
    });
  }
}