// Author: fruit.com.cn

import 'package:flutter/material.dart';

import '../../core/data/models/reward.dart';
import '../../core/theme/app_colors.dart';

const double _coinInnerInsetRatio = 0.1;
const double _coinLetterRatio = 0.46;
const double _taskIconSize = 46;
const double _taskIconRadius = 12;
const double _taskGlyphSize = 24;
const double _adIconWidth = 28;
const double _adIconHeight = 22;
const double _adIconRadius = 4;
const double _adUnderlineWidth = 12;
const double _adUnderlineHeight = 2;
const double _adUnderlineBottom = -5;
const Color _coinOuter = Color(0xFFF6B84E);
const Color _coinInnerStart = Color(0xFFFFD98B);
const Color _coinInnerEnd = Color(0xFFE39B31);
const Color _coinBorder = Color(0xFFFFE0A1);
const Color _taskIconStart = Color(0xFF4C171E);
const Color _taskIconEnd = Color(0xFF281014);
const Color _taskIconSurface = Color(0xFF202022);

/// 奖励中心统一金币图标。
class RewardCoinIcon extends StatelessWidget {
  const RewardCoinIcon({super.key, required this.size});

  final double size;

  @override
  Widget build(BuildContext context) {
    final inset = size * _coinInnerInsetRatio;
    return Container(
      width: size,
      height: size,
      padding: EdgeInsets.all(inset),
      decoration: const BoxDecoration(
        shape: BoxShape.circle,
        color: _coinOuter,
        boxShadow: [BoxShadow(color: Color(0x4DF6B84E), blurRadius: 6)],
      ),
      child: Container(
        alignment: Alignment.center,
        decoration: BoxDecoration(
          shape: BoxShape.circle,
          gradient: const LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: [_coinInnerStart, _coinInnerEnd],
          ),
          border: Border.all(color: _coinBorder),
        ),
        child: Text(
          'N',
          style: TextStyle(
            color: AppColors.textPrimary,
            fontSize: size * _coinLetterRatio,
            fontWeight: FontWeight.w900,
            height: 1,
          ),
        ),
      ),
    );
  }
}

/// 奖励中心签到按钮的广告标识。
class RewardAdIcon extends StatelessWidget {
  const RewardAdIcon({super.key});

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      width: _adIconWidth,
      height: _adIconHeight,
      child: Stack(
        clipBehavior: Clip.none,
        alignment: Alignment.center,
        children: [
          Container(
            width: _adIconWidth,
            height: _adIconHeight,
            alignment: Alignment.center,
            decoration: BoxDecoration(
              border: Border.all(color: AppColors.textPrimary, width: 2),
              borderRadius: BorderRadius.circular(_adIconRadius),
            ),
            child: const Text(
              'AD',
              style: TextStyle(
                color: AppColors.textPrimary,
                fontSize: 11,
                fontWeight: FontWeight.w900,
                height: 1,
              ),
            ),
          ),
          Positioned(
            bottom: _adUnderlineBottom,
            child: Container(
              width: _adUnderlineWidth,
              height: _adUnderlineHeight,
              decoration: BoxDecoration(
                color: AppColors.textPrimary,
                borderRadius: BorderRadius.circular(_adUnderlineHeight),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

/// 根据后台任务类型绘制任务图标，不绑定具体任务文案。
class RewardTaskLeading extends StatelessWidget {
  const RewardTaskLeading({super.key, required this.task});

  final RewardTask task;

  @override
  Widget build(BuildContext context) {
    final invite = _isInviteTask(task);
    return Container(
      width: _taskIconSize,
      height: _taskIconSize,
      decoration: BoxDecoration(
        shape: invite ? BoxShape.circle : BoxShape.rectangle,
        borderRadius: invite ? null : BorderRadius.circular(_taskIconRadius),
        gradient: invite
            ? const LinearGradient(colors: [_taskIconStart, _taskIconEnd])
            : null,
        color: invite ? null : _taskIconSurface,
      ),
      child: Icon(
        _taskIcon(task),
        color: AppColors.textPrimary,
        size: _taskGlyphSize,
      ),
    );
  }
}

bool _isInviteTask(RewardTask task) {
  final code = task.code.toUpperCase();
  return task.type == 'INVITE_FRIEND' || code.contains('INVITE');
}

IconData _taskIcon(RewardTask task) {
  final code = task.code.toUpperCase();
  if (code.contains('FACEBOOK')) return Icons.facebook_rounded;
  if (code.contains('YOUTUBE')) return Icons.smart_display_rounded;
  return switch (task.type) {
    'WATCH_DURATION' => Icons.play_circle_outline_rounded,
    'WATCH_EPISODES' => Icons.video_collection_outlined,
    'COMPLETE_PROFILE' => Icons.person_outline_rounded,
    'FIRST_PURCHASE' => Icons.shopping_bag_outlined,
    'INVITE_FRIEND' => Icons.card_giftcard_rounded,
    _ => Icons.stars_rounded,
  };
}