import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:hgdj/assets_tool/app_colors.dart';
import 'package:hgdj/extension/extensions.dart';
import 'package:hgdj/hj_model/video_model.dart';
import 'package:hgdj/hj_page/mine/mine_vip/widgets/coin_pay_bottom_sheet.dart';
import 'package:hgdj/hj_page/mine/widgets/gradient_text.dart';
import 'package:hgdj/hj_utils/pay/pay_manager.dart';
import 'package:hgdj/hj_utils/screen.dart';
import 'package:hgdj/routers/jump_router.dart';
import 'package:hgdj/tools_base/global_store/store.dart';
import 'package:hgdj/tools_base/widget/sheet_handle_bar.dart';
import 'package:provider/provider.dart';

///金币购买作品面板
class VideoBuyBottomSheet extends StatefulWidget {
  final VideoModel video;

  const VideoBuyBottomSheet({super.key, required this.video});

  @override
  State<VideoBuyBottomSheet> createState() => _VideoBuyBottomSheetState();
}

class _VideoBuyBottomSheetState extends State<VideoBuyBottomSheet> {
  VideoModel get _video => widget.video;

  bool get _isCartoon => _video.videoType == 1;

  bool get _isSeedLink => _video.newsType == 'SEED_LINK';

  //图集和黄游金币解锁，没有vip折扣
  bool get _noDiscount => _video.newsType == "PIC" || _isSeedLink;

  //实际售价：无折扣品类按原价，其余按折后价
  String get _priceText =>
      '${(_noDiscount ? _video.originCoins : _video.coins) ?? 0} 金币';

  @override
  void initState() {
    super.initState();
    globalStore.updateUserInfo();
    globalStore.refreshWallet();
  }

  @override
  Widget build(BuildContext context) {
    return Consumer<GlobalStore>(
      builder: (_, store, __) {
        final enough = (store.wallet?.amount ?? 0) >= (_video.realCoins ?? 0);
        return Container(
          width: double.infinity,
          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 18),
          decoration: const BoxDecoration(
            color: AppColors.primaryColor,
            borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              const SheetHandleBar(),
              18.sizeBoxH,
              const Text(
                '购买作品',
                style: TextStyle(
                    color: Color(0xE5ffffff),
                    fontSize: 20,
                    fontWeight: FontWeight.w500),
              ),
              18.sizeBoxH,
              //作品解锁价
              Row(
                children: [
                  const Text('作品解锁',
                      style: TextStyle(color: Color(0xE5ffffff), fontSize: 14)),
                  const Spacer(),
                  GestureDetector(
                    onTap: () => CoinPayBottomSheet.show(),
                    child: Text(
                      _priceText,
                      style: const TextStyle(
                          color: Color(0xffFF9000),
                          fontSize: 14,
                          fontWeight: FontWeight.w500),
                    ),
                  ),
                ],
              ),
              18.sizeBoxH,
              //图集和黄游金币解锁，没有vip折扣，不展示原价和折扣说明
              if (!_noDiscount) ..._discountRows(store),
              Divider(height: 0.5, color: Colors.white.withValues(alpha: .05)),
              18.sizeBoxH,
              //我的金币余额 + 充值入口
              Row(
                children: [
                  const Text('我的金币',
                      style: TextStyle(color: Color(0xE5ffffff), fontSize: 14)),
                  const Spacer(),
                  Text(
                    '${store.wallet?.amount?.toDouble().fixed(2) ?? 0}',
                    style: const TextStyle(
                        color: Color(0xE5ffffff),
                        fontSize: 14,
                        fontWeight: FontWeight.w500),
                  ),
                  12.sizeBoxW,
                  InkWell(
                    enableFeedback: false,
                    onTap: () => CoinPayBottomSheet.show(),
                    child: const Text(
                      '充值',
                      style: TextStyle(
                        color: Color(0xffA4634D),
                        fontSize: 14,
                        fontWeight: FontWeight.w400,
                        decoration: TextDecoration.underline,
                        decorationColor: Color(0xffA4634D),
                      ),
                    ),
                  ),
                ],
              ),
              18.sizeBoxH,
              //底部两个按钮：立即支付 / 开通会员
              Row(
                children: [
                  Expanded(
                    child: _button(
                      enough ? '$_priceText/立即支付' : '余额不足,前往充值',
                      textColor: const Color(0xff7B0000),
                      decoration: BoxDecoration(
                        gradient: const LinearGradient(
                          begin: Alignment.topLeft,
                          end: Alignment.bottomRight,
                          colors: [Color(0xfff8f3ae), Color(0xffddac44)],
                        ),
                        borderRadius: BorderRadius.circular(3),
                      ),
                      onTap: () => _onPay(enough),
                    ),
                  ),
                  12.sizeBoxW,
                  Expanded(
                    child: _button(
                      '开通会员免费看',
                      textColor: Colors.white,
                      decoration: BoxDecoration(
                        color: const Color(0xfff68804),
                        borderRadius: BorderRadius.circular(3),
                      ),
                      onTap: () => pushToWalletPage(),
                    ),
                  ),
                ],
              ),
            ],
          ),
        );
      },
    );
  }

  //原价 + 折扣说明（有 vip 折扣的品类才展示）
  List<Widget> _discountRows(GlobalStore store) {
    final isNormalUser = store.meInfo == null || store.meInfo?.vipLevel == 0;
    final isVip = store.isVIP;
    final String discountText;
    if ((_video.coins ?? 0) < (_video.originCoins ?? 0) && isVip) {
      discountText = '您当前享受${store.meInfo?.payVidDiscount}折优惠';
    } else if (isVip) {
      discountText = '您当前不享受免费观看';
    } else {
      discountText = '您当前不享受折扣优惠';
    }
    return [
      Row(
        children: [
          const Text('作品原价',
              style: TextStyle(color: Color(0xE5FFFFFF), fontSize: 14)),
          const Spacer(),
          Text(
            '${_video.originCoins ?? 0} 金币',
            style: TextStyle(
              color: const Color(0x8CFFFFFF),
              fontSize: 14,
              decoration: isNormalUser ? null : TextDecoration.lineThrough,
              decorationColor: const Color(0x8CFFFFFF),
            ),
          ),
        ],
      ),
      18.sizeBoxH,
      Row(
        children: [
          GradientText(
            discountText,
            style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w400),
            gradient: const LinearGradient(
                colors: [Color(0xffAC7E6E), Color(0xffA4634D)]),
          ),
          const Spacer(),
          GestureDetector(
            onTap: () => pushToWalletPage(),
            child: GradientText(
              isVip ? '升级会员免费看' : '购买VIP免费看',
              gradient: const LinearGradient(
                  colors: [Color(0xffAC7E6E), Color(0xffA4634D)]),
              style: const TextStyle(
                fontSize: 14,
                fontWeight: FontWeight.w500,
                decoration: TextDecoration.underline,
                decorationColor: Color(0xffA4634D),
              ),
            ),
          ),
        ],
      ),
      18.sizeBoxH,
    ];
  }

  Widget _button(String text,
      {required Color textColor,
      required BoxDecoration decoration,
      required VoidCallback onTap}) {
    return GestureDetector(
      behavior: HitTestBehavior.translucent,
      onTap: onTap,
      child: Container(
        height: 44,
        alignment: Alignment.center,
        decoration: decoration,
        child: Text(
          text,
          style: TextStyle(
              color: textColor, fontSize: 16, fontWeight: FontWeight.w500),
        ),
      ),
    );
  }

  void _onPay(bool enough) async {
    if (!enough) {
      await CoinPayBottomSheet.show();
      return;
    }
    //黄游(SEED_LINK)和普通视频都按单片算，动漫按整部算
    final type =
        (!_isSeedLink && _isCartoon) ? ProductType.mediaAll : ProductType.media;
    await PayManager().buy(
      _video.id,
      type,
      source: 'video_buy',
      goldVideoCouponNum: 0,
      jumpWalletOnInsufficient: false,
      onSuccess: (data) {
        _video.vidStatus?.hasPaid = true;
        Get.back(result: true);
      },
      onFailure: (data) {
        if (data?.code == 8000) {
          CoinPayBottomSheet.show();
        }
      },
    );
  }
}