import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:hgdj/hj_page/video/video_full_logic.dart';
import 'package:hgdj/hj_page/video/view/video_menu_view.dart';
import 'package:video_player/video_player.dart';

import '../../hj_model/video_model.dart';
import '../../hj_utils/screen.dart';
import '../../tools_base/unique_tag_mixin.dart';

/// 全屏播放页（复用外部传入的播放器控制器，不新建也不释放）
class VideoFullPage extends StatefulWidget {
  final VideoPlayerController playCtr;
  final VideoModel? videoModel;
  final bool isAutoV; // 判断size，自动转竖屏
  final bool showMenu; //是否需要显示菜单栏，直播不需要展示菜单栏

  const VideoFullPage({
    super.key,
    required this.playCtr,
    this.videoModel,
    this.isAutoV = true,
    this.showMenu = true,
  });

  @override
  State<VideoFullPage> createState() => _VideoFullPageState();
}

// tag 隔离：logic 持有外部传入的 playCtr。不加 tag 时上一个全屏页的 Get.delete 若没跑完，
// GetBuilder 的 init 会被跳过 → 复用旧 logic、播到上一个视频
class _VideoFullPageState extends State<VideoFullPage> with UniqueTagMixin {
  VideoPlayerController get playCtr => widget.playCtr;

  @override
  Widget build(BuildContext context) {
    return GetBuilder<VideoFullLogic>(
      tag: uniqueTag,
      init: VideoFullLogic(playCtr: playCtr, isAutoV: widget.isAutoV),
      builder: (logic) => PopScope(
        // 系统返回键/侧滑不直接退页，先恢复竖屏再由 exitFullScreen 退
        canPop: false,
        onPopInvokedWithResult: (didPop, _) {
          if (didPop) return;
          logic.exitFullScreen();
        },
        child: Scaffold(
          backgroundColor: Colors.black,
          body: Stack(
            alignment: Alignment.center,
            children: [
              // 撑满 Stack 用（Stack 尺寸取最大的非 Positioned 子节点）。
              // 不能改成 StackFit.expand：那会给 AspectRatio 传 tight 约束，视频比例失效
              SizedBox(width: screen.screenWidth, height: screen.screenHeight),
              Hero(
                tag: "player",
                child: AspectRatio(
                  aspectRatio: logic.aspectRatio,
                  child: VideoPlayer(playCtr),
                ),
              ),
              if (widget.showMenu) _menuLayer(logic),
              _backBtn(logic),
            ],
          ),
        ),
      ),
    );
  }

  /// 播放器控制层（进度条/倍速/快进快退）
  Widget _menuLayer(VideoFullLogic logic) {
    return Positioned(
      bottom: 5,
      left: 0,
      right: 0,
      child: SizedBox(
        width: screen.screenWidth,
        height: screen.screenHeight,
        child: VideoMenuView(
          playCtr: playCtr,
          isFull: true,
          onFullScreen: logic.exitFullScreen,
          videoModel: widget.videoModel,
        ),
      ),
    );
  }

  /// 全屏(横屏)下返回按钮避开刘海/状态栏安全区（原来用竖屏的 paddingTop 不准）
  Widget _backBtn(VideoFullLogic logic) {
    return SafeArea(
      child: Align(
        alignment: Alignment.topLeft,
        child: InkWell(
          enableFeedback: false,
          onTap: logic.exitFullScreen,
          child: const Padding(
            padding: EdgeInsets.fromLTRB(5, 5, 15, 15),
            child: SizedBox(
              width: 30,
              height: 30,
              child: Icon(Icons.arrow_back_ios_sharp, color: Colors.white),
            ),
          ),
        ),
      ),
    );
  }
}