import 'dart:ui' show ImageFilter;

import 'package:flutter/material.dart';
import 'package:forui/forui.dart';

import '../../../shared/widgets/app_loading_ring.dart';
import '../../../shared/widgets/smart_image.dart';
import '../../../shared/widgets/top_drag_area.dart';
import '../../../shared/widgets/window_controls.dart';


class PlayerLoadingBackdrop extends StatelessWidget {
  const PlayerLoadingBackdrop({super.key, this.backdropUrl});

  final String? backdropUrl;

  @override
  Widget build(BuildContext context) {
    final url = backdropUrl;
    if (url == null || url.isEmpty) {
      return const Positioned.fill(child: ColoredBox(color: Colors.black));
    }

    return Positioned.fill(
      child: Stack(
        fit: StackFit.expand,
        children: [
          const ColoredBox(color: Colors.black),
          RepaintBoundary(
            child: Transform.scale(
              scale: 1.08,
              child: ImageFiltered(
                imageFilter: ImageFilter.blur(sigmaX: 24, sigmaY: 24),
                child: SmartImage(
                  url: url,
                  fit: BoxFit.cover,
                  borderRadius: 0,
                  fallbackIcon: null,
                  memCacheWidth: 480,
                  placeholder: const ColoredBox(color: Colors.black),
                ),
              ),
            ),
          ),
          const ColoredBox(color: Colors.black54),
        ],
      ),
    );
  }
}


class PlayerLoadingIndicator extends StatelessWidget {
  const PlayerLoadingIndicator({super.key});

  @override
  Widget build(BuildContext context) {
    return const Center(child: AppLoadingRing(size: 44, color: Colors.white));
  }
}


class PlayerStatusTopBar extends StatelessWidget {
  const PlayerStatusTopBar({
    super.key,
    required this.title,
    required this.onBack,
    required this.topInset,
    required this.leftInset,
    required this.showWindowControls,
    this.enableWindowDrag = false,
  });


  final String title;
  final VoidCallback onBack;
  final double topInset;
  final double leftInset;
  final bool showWindowControls;


  final bool enableWindowDrag;

  @override
  Widget build(BuildContext context) {
    final trimmed = title.trim();
    final shown = trimmed.isEmpty ? '播放器' : trimmed;

    final Widget bar = SafeArea(
      bottom: false,
      child: Row(
        children: [
          IconButton(
            onPressed: onBack,
            icon: const Icon(Icons.arrow_back, color: Colors.white),
            tooltip: '返回',
          ),
          const SizedBox(width: 4),
          Expanded(
            child: Text(
              shown,
              style: const TextStyle(color: Colors.white, fontSize: 15),
              overflow: TextOverflow.ellipsis,
            ),
          ),
          if (showWindowControls) const WindowControls.forDarkSurface(),
        ],
      ),
    );

    return Positioned(
      top: topInset,
      left: leftInset,
      right: 12,
      child: enableWindowDrag ? TopDragArea(child: bar) : bar,
    );
  }
}


class PlayerErrorCard extends StatelessWidget {
  const PlayerErrorCard({
    super.key,
    required this.message,
    required this.onBack,
    required this.onRetry,
  });

  final String message;
  final VoidCallback onBack;
  final VoidCallback onRetry;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 32),
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 480),
          child: Material(
            color: const Color(0xFF1C1F26),
            borderRadius: BorderRadius.circular(16),
            elevation: 8,
            shadowColor: Colors.black,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Padding(
                  padding: const EdgeInsets.fromLTRB(24, 20, 12, 0),
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Container(
                        width: 36,
                        height: 36,
                        decoration: BoxDecoration(
                          color: const Color(
                            0xFFFFB020,
                          ).withValues(alpha: 0.14),
                          borderRadius: BorderRadius.circular(8),
                        ),
                        child: const Icon(
                          Icons.error_outline,
                          color: Color(0xFFFFC46B),
                          size: 22,
                        ),
                      ),
                      const SizedBox(width: 14),
                      const Expanded(
                        child: Text(
                          '无法播放此媒体',
                          style: TextStyle(
                            color: Colors.white,
                            fontSize: 17,
                            fontWeight: FontWeight.w600,
                          ),
                        ),
                      ),
                      IconButton(
                        onPressed: onBack,
                        icon: const Icon(Icons.close, color: Colors.white70),
                        tooltip: '关闭播放器',
                      ),
                    ],
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.fromLTRB(24, 12, 24, 0),
                  child: ConstrainedBox(
                    constraints: const BoxConstraints(maxHeight: 140),
                    child: SingleChildScrollView(
                      child: SelectableText(
                        message,
                        style: const TextStyle(
                          color: Colors.white70,
                          fontSize: 13,
                          height: 1.45,
                        ),
                      ),
                    ),
                  ),
                ),
                const FDivider(
                  style: .delta(
                    color: Colors.white12,
                    padding: .value(EdgeInsets.only(top: 20)),
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.fromLTRB(16, 8, 16, 12),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: [
                      TextButton.icon(
                        onPressed: onBack,
                        icon: const Icon(Icons.arrow_back, size: 18),
                        label: const Text('返回详情'),
                        style: TextButton.styleFrom(
                          foregroundColor: Colors.white70,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(6),
                          ),
                        ),
                      ),
                      const SizedBox(width: 10),
                      FilledButton.icon(
                        onPressed: onRetry,
                        icon: const Icon(Icons.refresh, size: 18),
                        label: const Text('重试'),
                        style: FilledButton.styleFrom(
                          backgroundColor: Colors.white,
                          foregroundColor: Colors.black,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(6),
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}