import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:health_app/core/app_colors.dart';
import 'package:health_app/core/app_design_tokens.dart';
import 'package:health_app/core/app_theme.dart';
import 'package:health_app/widgets/common_widgets.dart';
import 'package:health_app/widgets/app_empty_state.dart';

void main() {
  testWidgets('secondary page separates neutral canvas from white app bar', (
    tester,
  ) async {
    await tester.pumpWidget(
      MaterialApp(
        theme: AppTheme.lightTheme,
        home: GradientScaffold(
          appBar: AppBar(title: const Text('用药管理')),
          body: const SizedBox.expand(),
        ),
      ),
    );

    final scaffold = tester.widget<Scaffold>(find.byType(Scaffold));
    expect(scaffold.backgroundColor, AppColors.background);
    expect(AppTheme.lightTheme.appBarTheme.backgroundColor, Colors.white);
  });

  testWidgets('create fab uses one white gradient-outline visual', (
    tester,
  ) async {
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: AppCreateFab(tooltip: '添加用药', onPressed: () {}),
        ),
      ),
    );

    final border = tester.widget<DecoratedBox>(
      find.byKey(const ValueKey('app-create-fab-border')),
    );
    final decoration = border.decoration as BoxDecoration;
    expect(decoration.gradient, AppColors.actionOutlineGradient);
    expect(decoration.borderRadius, AppRadius.pillBorder);
    expect(find.byIcon(Icons.add_rounded), findsOneWidget);
  });

  testWidgets('empty state uses a flat restrained icon surface', (
    tester,
  ) async {
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          body: AppEmptyState(
            icon: Icons.event_available_outlined,
            title: '今日没有安排',
            iconColor: AppColors.success,
          ),
        ),
      ),
    );

    final surface = tester.widget<Container>(
      find.byKey(const ValueKey('empty-state-icon-surface')),
    );
    final decoration = surface.decoration as BoxDecoration;
    expect(decoration.gradient, isNull);
    expect(decoration.boxShadow, isNull);
  });

  test('health metrics and notification preferences use lucide icons', () {
    final trend = File('lib/pages/chart/trend_page.dart').readAsStringSync();
    final notifications = File(
      'lib/pages/settings/notification_prefs_page.dart',
    ).readAsStringSync();

    expect(trend, contains('LucideIcons.gauge'));
    expect(trend, contains('LucideIcons.heartPulse'));
    expect(notifications, contains('AppModuleVisuals.medication.icon'));
    expect(notifications, contains('LucideIcons.slidersHorizontal'));
  });

  test(
    'login and registration keep the image background with neutral forms',
    () {
      final login = File(
        'lib/pages/auth/login_page.dart',
      ).readAsStringSync().replaceAll('\r\n', '\n');

      expect(login, contains("Image.asset(\n              _loginBg"));
      expect(login, contains('Colors.white.withValues(alpha: 0.88)'));
      expect(login, contains('fillColor: AppColors.cardInner'));
      expect(login, contains('showDragHandle: true'));
    },
  );

  test('today health special states do not use a filled warning row', () {
    final homeCard = File(
      'lib/pages/home/widgets/chat_messages_view.dart',
    ).readAsStringSync();

    expect(homeCard, contains("'overdue': LucideIcons.circleAlert"));
    expect(homeCard, contains('color: Colors.transparent'));
    expect(homeCard, isNot(contains('isOverdue ? const Color(0xFFFFEBEE)')));
    expect(homeCard, contains('EdgeInsets.fromLTRB(14, 5, 14, 7)'));
    expect(homeCard, contains('EdgeInsets.symmetric(vertical: 1)'));
  });

  test('active create and report states follow the shared visual system', () {
    final remaining = File('lib/pages/remaining_pages.dart').readAsStringSync();
    final reports = File(
      'lib/pages/report/report_pages.dart',
    ).readAsStringSync();

    expect(remaining, contains("AppGradientOutlineButton(label: '保存计划'"));
    expect(reports, contains('icon: LucideIcons.camera'));
    expect(reports, contains('icon: LucideIcons.images'));
    final pdfState = reports.substring(
      reports.indexOf('Widget _buildPdf'),
      reports.indexOf('String _absoluteUrl'),
    );
    expect(pdfState, contains('return AppEmptyState('));
    expect(pdfState, contains('icon: AppModuleVisuals.report.icon'));
  });

  test('secondary module colors do not keep the old mixed palettes', () {
    final diet = File(
      'lib/pages/diet/diet_nutrition_widgets.dart',
    ).readAsStringSync();
    final remaining = File('lib/pages/remaining_pages.dart').readAsStringSync();
    final reports = File(
      'lib/pages/report/report_pages.dart',
    ).readAsStringSync();
    final medication = File(
      'lib/pages/medication/medication_list_page.dart',
    ).readAsStringSync();
    final checkin = File(
      'lib/pages/medication/medication_checkin_page.dart',
    ).readAsStringSync();
    final exercise = File(
      'lib/pages/exercise/exercise_plan_page.dart',
    ).readAsStringSync();

    expect(diet, contains('static const primary = Color(0xFF6476E8)'));
    expect(remaining, isNot(contains('AppModuleVisuals.diet.color')));
    expect(reports, contains('const _reportPageSoft = Color(0xFFF0F0FF)'));
    expect(reports, isNot(contains('Color(0xFF60A5FA)')));
    expect(medication, contains('AppColors.blueMeasure'));
    expect(checkin, contains('AppColors.blueMeasure'));
    expect(exercise, contains('AppColors.blueMeasure'));
  });

  test('trend colors and status text colors stay visually distinct', () {
    final colors = File('lib/core/app_colors.dart').readAsStringSync();
    final trend = File('lib/pages/chart/trend_page.dart').readAsStringSync();

    expect(trend, contains('class _TrendColors'));
    expect(trend, contains("'color': _TrendColors.bloodPressure"));
    expect(trend, contains("'color': _TrendColors.heartRate"));
    expect(trend, isNot(contains("'color': Color(0xFFEF4444)")));
    expect(trend, isNot(contains("'color': Color(0xFFF59E0B)")));
    expect(colors, contains('successText = Color(0xFF15803D)'));
    expect(colors, contains('errorText = Color(0xFFDC2626)'));
    expect(colors, contains('warningText = Color(0xFFB45309)'));
  });

  test('exercise rows use the shared leading icon list pattern', () {
    final exercise = File(
      'lib/pages/exercise/exercise_plan_page.dart',
    ).readAsStringSync();
    final row = exercise.substring(
      exercise.indexOf('class _ExercisePlanRow'),
      exercise.indexOf('class _CompactActionButton'),
    );

    expect(row, contains('AppModuleVisuals.exercise.icon'));
    expect(row, contains('color: AppColors.exerciseLight'));
    expect(row, contains('left: 68'));
    expect(row, isNot(contains('width: 16')));
    final modules = File('lib/core/app_module_visuals.dart').readAsStringSync();
    expect(modules, contains('icon: Icons.directions_run_outlined'));
  });

  test(
    'report utility action and notification rows stay neutral and compact',
    () {
      final analysis = File(
        'lib/pages/report/ai_analysis_page.dart',
      ).readAsStringSync();
      final notifications = File(
        'lib/pages/notifications/notification_center_page.dart',
      ).readAsStringSync();

      final originalReportAction = analysis.substring(
        analysis.indexOf("label: const Text('查看原始报告')"),
        analysis.indexOf("label: const Text('查看原始报告')") + 500,
      );
      expect(
        originalReportAction,
        contains('foregroundColor: AppColors.textPrimary'),
      );
      expect(originalReportAction, contains('color: AppColors.border'));
      expect(notifications, contains('BoxConstraints(minHeight: 82)'));
      expect(notifications, contains('width: 68'));
      expect(notifications, contains("const TextSpan(text: ' 条未读消息')"));
      expect(
        notifications,
        isNot(contains('color: AppColors.notificationLight')),
      );
    },
  );
}