import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:hgdj/assets_tool/images.dart';
import 'package:hgdj/hj_page/live/live_item_widget.dart';
import 'package:hgdj/hj_page/live/live_model.dart';
import 'package:hgdj/hj_utils/screen.dart';
import 'package:hgdj/hj_utils/sliver_delegate.dart';
import 'package:hgdj/tools_base/banner/ads_grid_view_widget.dart';
import 'package:hgdj/tools_base/loading/loading_center_widget.dart';
import 'package:hgdj/tools_base/refresh/pull_refresh.dart';
import 'package:hgdj/tools_base/widget/net_image_widget.dart';
import 'package:video_player/video_player.dart';

import '../video/video_full_page.dart';
import 'live_detail_logic.dart';

//直播详情页
class LiveDetailPage extends StatefulWidget {
  final LiveAnchor? anchor;
  const LiveDetailPage({super.key, this.anchor});

  @override
  State<LiveDetailPage> createState() => _LiveDetailPageState();
}

class _LiveDetailPageState extends State<LiveDetailPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: GetBuilder<LiveDetailLogic>(
          init: LiveDetailLogic(anchor: widget.anchor),
          builder: (logic) => Stack(
            children: [
              _buildBody(logic),
              Positioned(left: 10, top: 10, child: _buildBack()),
            ],
          ),
        ),
      ),
    );
  }

  //页面框架
  Widget _buildBody(LiveDetailLogic logic) {
    return pullYsRefresh(
      enablePullDown: false,
      onInit: (c) => logic.controller = c,
      onLoading: (c) => logic.loadMoreData(),
      child: CustomScrollView(
        slivers: [
          SliverPersistentHeader(
            pinned: true,
            delegate: MySliverDelegate(
              forceRefresh: true,
              maxHeight: Get.width / (logic.aspectRatio ?? 1),
              minHeight: logic.isVerticalVideo
                  ? Get.width / (logic.aspectRatio ?? 1)
                  : Get.height / 3 - 60,
              child: ClipRRect(
                //部分机型会超出比例，裁剪掉多余部分
                child: Container(color: Colors.black, child: _buildPlayer()),
              ),
            ),
          ),
          SliverToBoxAdapter(child: _buildAnchorInfo(logic)),
          SliverToBoxAdapter(child: _buildAds()),
          10.sliverSizeBoxH,
          _buildDivider(),
          SliverToBoxAdapter(
            child: Container(
              padding: const EdgeInsets.fromLTRB(16, 18, 16, 12),
              child: const Text(
                '热门直播',
                style: TextStyle(
                    fontSize: 16,
                    color: Colors.white,
                    fontWeight: FontWeight.w500),
              ),
            ),
          ),
          _buildRecommend(),
          18.sliverSizeBoxH,
          _buildDivider(),
        ],
      ),
    );
  }

  //视频播放区
  Widget _buildPlayer() {
    return GetBuilder<LiveDetailLogic>(
      id: 'player',
      builder: (logic) => Stack(
        alignment: Alignment.center,
        children: [
          if (logic.loadingUserInfo) ...[
            //1.加载用户直播权益信息
            AspectRatio(
                aspectRatio: logic.aspectRatio ?? 1, child: _buildCover(logic)),
            const LoadingCenterWidget(),
          ] else if (!logic.canWatchLive) ...[
            //2.无权限
            _buildNoPermission(logic),
          ] else if (logic.anchor?.isOnline != true) ...[
            //3.主播离线
            _buildOffline(logic),
          ] else ...[
            //4.主播在线
            Hero(
              tag: 'player',
              child: AspectRatio(
                aspectRatio: logic.aspectRatio ?? 1,
                child: logic.initedVideoController
                    ? VideoPlayer(logic.playerController!)
                    : _buildCover(logic),
              ),
            ),
            if (logic.initedVideoController)
              Positioned(
                right: 12,
                bottom: 6,
                child: GestureDetector(
                  onTap: () => Get.to(() => VideoFullPage(
                      playCtr: logic.playerController!, showMenu: false)),
                  child: Image.asset("full_icon.png".videoPath,
                      width: 26, height: 26),
                ),
              ),
            Obx(() => Offstage(
                offstage: !logic.isLoading.value,
                child: const LoadingCenterWidget())),
          ],
        ],
      ),
    );
  }

  //无权限
  Widget _buildNoPermission(LiveDetailLogic logic) {
    return Container(
      color: Colors.black,
      child: Stack(
        fit: StackFit.expand,
        children: [
          _buildCover(logic),
          Container(
            color: Colors.black.withValues(alpha: .7),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                const Text(
                  '温馨提示',
                  style: TextStyle(
                      fontSize: 14,
                      color: Colors.white,
                      fontWeight: FontWeight.w500),
                ),
                12.sizeBoxH,
                const Text('开通直播卡全站直播骚货任选～',
                    style: TextStyle(fontSize: 12, color: Colors.white)),
                18.sizeBoxH,
                GestureDetector(
                  onTap: logic.onChargeAction,
                  child: Container(
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(3),
                      gradient: const LinearGradient(
                        begin: Alignment.centerLeft,
                        end: Alignment.centerRight,
                        colors: [Color(0xffffe8be), Color(0xffe5b764)],
                      ),
                    ),
                    padding:
                        const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
                    child: const Text('立即开通直播卡',
                        style:
                            TextStyle(fontSize: 14, color: Color(0xFF7b0000))),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  //主播离线
  Widget _buildOffline(LiveDetailLogic logic) {
    return Container(
      color: Colors.black,
      child: Stack(
        fit: StackFit.expand,
        children: [
          _buildCover(logic),
          Container(
            color: Colors.black.withValues(alpha: .7),
            alignment: Alignment.center,
            child: const Text('当前主播离线，请前往观看其她热门主播喔～',
                style: TextStyle(fontSize: 14, color: Colors.white)),
          ),
        ],
      ),
    );
  }

  //封面图
  Widget _buildCover(LiveDetailLogic logic) {
    return NetworkImageLoader(
      imageUrl: logic.anchor?.coverImg ?? '',
      encrypt: false,
      borderRadius: 0,
      width: Get.width,
    );
  }

  //热门直播推荐列表
  Widget _buildRecommend() {
    return GetBuilder<LiveDetailLogic>(
      id: 'recommend',
      builder: (logic) {
        if (logic.loading) {
          return const SliverToBoxAdapter(child: LoadingWidget());
        }
        if (logic.recommendList.isEmpty) {
          return const SliverToBoxAdapter(
              child: SizedBox(height: 300, child: CErrorWidget()));
        }
        return SliverPadding(
          padding: const EdgeInsets.symmetric(horizontal: 16),
          sliver: SliverGrid(
            gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
              crossAxisCount: 2,
              mainAxisSpacing: 12,
              crossAxisSpacing: 7,
              childAspectRatio: 168 / 105,
            ),
            delegate: SliverChildBuilderDelegate(
              (context, index) {
                final anchor = logic.recommendList[index];
                return LiveItemWidget(
                  showType: 5,
                  anchor: anchor,
                  action: () => logic.onChangeLiveAction(anchor),
                );
              },
              childCount: logic.recommendList.length,
            ),
          ),
        );
      },
    );
  }

  //返回按钮
  Widget _buildBack() {
    return GestureDetector(
      onTap: () => Get.back(),
      child: Container(
        padding: const EdgeInsets.only(left: 10, right: 2, top: 2, bottom: 2),
        decoration:
            const BoxDecoration(color: Colors.grey, shape: BoxShape.circle),
        child: Icon(Icons.arrow_back_ios,
            color: Colors.black.withValues(alpha: 0.8)),
      ),
    );
  }

  //主播信息
  Widget _buildAnchorInfo(LiveDetailLogic logic) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
      child: Column(
        children: [
          Row(
            children: [
              NetworkImageLoader(
                imageUrl: logic.anchor?.coverImg ?? '',
                width: 36,
                height: 36,
                borderRadius: 18,
                encrypt: false,
              ),
              4.sizeBoxW,
              Text(logic.anchor?.name ?? '',
                  style: const TextStyle(fontSize: 14, color: Colors.white)),
            ],
          ),
          18.sizeBoxH,
          Row(
            children: [
              Text(
                '${logic.anchor?.viewCount}人观众',
                style: const TextStyle(fontSize: 12, color: Color(0xff999999)),
              ),
              const Spacer(),
              GestureDetector(
                onTap: () => logic.onShareAction(),
                child: Row(
                  children: [
                    Image.asset('live_share.png'.livePath, width: 24),
                    2.sizeBoxW,
                    const Text('分享',
                        style:
                            TextStyle(fontSize: 12, color: Color(0xff999999))),
                  ],
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }

  //广告位
  Widget _buildAds() {
    return AdsGridViewWidget(
      36,
      accordingAdsType: true,
      padding: const EdgeInsets.fromLTRB(16, 18, 0, 0),
    );
  }

  //分割线
  Widget _buildDivider() {
    return SliverToBoxAdapter(
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 16),
        height: .5,
        color: Colors.black.withValues(alpha: .1),
      ),
    );
  }
}