/// UI-01 主题一致性测试（Task 3）。
///
/// 覆盖：浅色 ColorScheme 方案 §3.1 精确值、深色语义对应值、字阶
/// （UI-03 §3 校准：24/17/16-14/13-12）、组件主题（按钮高 48/圆角 12、
/// 输入圆角 12、Dialog 圆角 16、BottomSheet 顶部圆角 16、AppBar
/// titleLarge）、动效令牌（含「减少动态效果」归零）。
library;

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:photo_live/app/theme.dart';
import 'package:photo_live/ui/tokens.dart';

void main() {
  group('浅色 ColorScheme（方案 §3.1 精确值）', () {
    final scheme = AppTheme.light.colorScheme;

    test('基础色', () {
      expect(scheme.primary, const Color(0xFF1A73E8));
      expect(scheme.onPrimary, const Color(0xFFFFFFFF));
      expect(scheme.surface, const Color(0xFFFFFFFF));
      expect(scheme.onSurface, const Color(0xFF172033));
      expect(scheme.secondary, const Color(0xFF996300), reason: '等待色');
      expect(scheme.error, const Color(0xFFB42318));
      // 成功色不进 ColorScheme（独立令牌）。
      expect(kColorSuccess, const Color(0xFF16794B));
    });

    test('页面背景与分隔线/次文字', () {
      expect(AppTheme.light.scaffoldBackgroundColor, const Color(0xFFF6F8FB));
      expect(AppTheme.light.dividerTheme.color, kColorDivider);
      expect(kColorDivider, const Color(0xFFE5EAF1));
      expect(scheme.onSurfaceVariant, kColorTextSecondary);
      expect(kColorTextSecondary, const Color(0xFF69778E)); // UI06: app-preview --muted
    });
  });

  group('深色 ColorScheme（语义对应，不反转图片）', () {
    final theme = AppTheme.dark;
    final scheme = theme.colorScheme;

    test('深表面 + 浅文字 + 提亮主色', () {
      expect(scheme.brightness, Brightness.dark);
      expect(scheme.surface, const Color(0xFF1F2530));
      expect(scheme.onSurface, const Color(0xFFE6EAF2));
      expect(scheme.primary, kColorInfoDark);
      expect(scheme.onPrimary, const Color(0xFF0B2E6F));
      expect(theme.scaffoldBackgroundColor, const Color(0xFF12161D));
    });

    test('等待/错误为深色提亮变体', () {
      expect(scheme.secondary, kColorWaitingDark);
      expect(scheme.error, kColorErrorDark);
    });
  });

  group('字阶（随系统缩放：fontSize 走 TextScaler）', () {
    final textTheme = AppTheme.light.textTheme;

    test('24 页面标题 / 17 分组 / 16-14 正文 / 13-12 辅助', () {
      expect(textTheme.titleLarge!.fontSize, 24);
      expect(textTheme.titleMedium!.fontSize, 17);
      expect(textTheme.bodyLarge!.fontSize, 16);
      expect(textTheme.bodyMedium!.fontSize, 14);
      expect(textTheme.bodySmall!.fontSize, 13);
      expect(textTheme.labelSmall!.fontSize, 12);
    });

    test('AppBar 标题用 titleLarge', () {
      expect(AppTheme.light.appBarTheme.titleTextStyle!.fontSize, 24);
    });
  });

  group('组件主题', () {
    final theme = AppTheme.light;

    test('按钮高 48、圆角 12', () {
      final filled = theme.filledButtonTheme.style;
      expect(
        filled!.minimumSize!.resolve(const <WidgetState>{}),
        const Size(64, 48),
      );
      expect(
        theme.elevatedButtonTheme.style!.minimumSize!.resolve(
          const <WidgetState>{},
        ),
        const Size(64, 48),
      );
      final shape =
          filled.shape!.resolve(const <WidgetState>{})
              as RoundedRectangleBorder;
      expect(shape.borderRadius, BorderRadius.circular(kRadiusInput));
      expect(
        theme.outlinedButtonTheme.style!.minimumSize!.resolve(
          const <WidgetState>{},
        ),
        const Size(48, 48),
      );
      expect(
        theme.textButtonTheme.style!.minimumSize!.resolve(
          const <WidgetState>{},
        ),
        const Size(48, 48),
      );
    });

    test('输入框圆角 10（UI06: app-preview .field）', () {
      final border = theme.inputDecorationTheme.border as OutlineInputBorder;
      expect(border.borderRadius, BorderRadius.circular(kRadiusField));
      expect(kRadiusField, 10);
    });

    test('Dialog 圆角 16、BottomSheet 顶部圆角 16', () {
      final dialog = theme.dialogTheme.shape as RoundedRectangleBorder;
      expect(dialog.borderRadius, BorderRadius.circular(kRadiusCard));
      final sheet = theme.bottomSheetTheme.shape as RoundedRectangleBorder;
      expect(
        (sheet.borderRadius as BorderRadius).topLeft,
        const Radius.circular(kRadiusCard),
      );
      expect(
        (sheet.borderRadius as BorderRadius).topRight,
        const Radius.circular(kRadiusCard),
      );
      expect(kRadiusCard, 16);
    });

    test('底部导航无胶囊指示器（UI06: app-preview .nav）', () {
      expect(theme.navigationBarTheme.indicatorColor, Colors.transparent);
    });
  });

  group('动效令牌', () {
    testWidgets('默认轻量 180ms / 轮播 300ms / 减少动态效果归零', (tester) async {
      expect(kMotionFast, const Duration(milliseconds: 180));
      expect(kMotionCarousel, const Duration(milliseconds: 300));
      expect(kMotionReduce, Duration.zero);

      late BuildContext captured;
      await tester.pumpWidget(
        MaterialApp(
          home: Builder(
            builder: (context) {
              captured = context;
              return const SizedBox.shrink();
            },
          ),
        ),
      );
      expect(motion(captured), kMotionFast);
      expect(motion(captured, carousel: true), kMotionCarousel);

      // 「减少动态效果」开启 → 一律归零。
      await tester.pumpWidget(
        MaterialApp(
          home: MediaQuery(
            data: const MediaQueryData(disableAnimations: true),
            child: Builder(
              builder: (context) {
                captured = context;
                return const SizedBox.shrink();
              },
            ),
          ),
        ),
      );
      expect(motion(captured), kMotionReduce);
      expect(motion(captured, carousel: true), kMotionReduce);
    });
  });
}