// 内容
import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:pilipala/common/widgets/badge.dart';
import 'package:pilipala/common/widgets/network_img_layer.dart';
import 'package:pilipala/models/dynamics/result.dart';
import 'package:pilipala/plugin/pl_gallery/index.dart';
import 'rich_node_panel.dart';

// ignore: must_be_immutable
class Content extends StatefulWidget {
  dynamic item;
  String? source;
  Content({
    super.key,
    this.item,
    this.source,
  });

  @override
  State<Content> createState() => _ContentState();
}

class _ContentState extends State<Content> {
  late bool hasPics;
  List<OpusPicsModel> pics = [];

  @override
  void initState() {
    super.initState();
    hasPics = widget.item.modules.moduleDynamic.major != null &&
        widget.item.modules.moduleDynamic.major.opus != null &&
        widget.item.modules.moduleDynamic.major.opus.pics.isNotEmpty;
    if (hasPics) {
      pics = widget.item.modules.moduleDynamic.major.opus.pics;
    }
  }

  InlineSpan picsNodes() {
    List<InlineSpan> spanChilds = [];
    int len = pics.length;
    List<String> picList = [];

    if (len == 1) {
      OpusPicsModel pictureItem = pics.first;
      picList.add(pictureItem.url!);

      /// 图片上方的空白间隔
      // spanChilds.add(const TextSpan(text: '\n'));
      spanChilds.add(
        WidgetSpan(
          child: LayoutBuilder(
            builder: (context, BoxConstraints box) {
              double maxWidth = box.maxWidth.truncateToDouble();
              double maxHeight = box.maxWidth * 0.6; // 设置最大高度
              double height = maxWidth *
                  0.5 *
                  (pictureItem.height != null && pictureItem.width != null
                      ? pictureItem.height! / pictureItem.width!
                      : 1);
              return Hero(
                tag: pictureItem.url!,
                placeholderBuilder:
                    (BuildContext context, Size heroSize, Widget child) {
                  return child;
                },
                child: GestureDetector(
                  onTap: () => onPreviewImg(picList, 1, context),
                  child: Container(
                    padding: const EdgeInsets.only(top: 4),
                    constraints: BoxConstraints(maxHeight: maxHeight),
                    width: box.maxWidth / 2,
                    height: height,
                    child: Stack(
                      children: [
                        Positioned.fill(
                          child: NetworkImgLayer(
                            src: pictureItem.url,
                            width: maxWidth / 2,
                            height: height,
                          ),
                        ),
                        height > Get.size.height * 0.9
                            ? const PBadge(
                                text: '长图',
                                right: 8,
                                bottom: 8,
                              )
                            : const SizedBox(),
                      ],
                    ),
                  ),
                ),
              );
            },
          ),
        ),
      );
    }
    if (len > 1) {
      List<Widget> list = [];
      for (var i = 0; i < len; i++) {
        picList.add(pics[i].url!);
      }
      for (var i = 0; i < len; i++) {
        list.add(
          LayoutBuilder(
            builder: (context, BoxConstraints box) {
              double maxWidth = box.maxWidth.truncateToDouble();
              return Hero(
                tag: picList[i],
                child: GestureDetector(
                  onTap: () => onPreviewImg(picList, i, context),
                  child: NetworkImgLayer(
                    src: pics[i].url,
                    width: maxWidth,
                    height: maxWidth,
                    origAspectRatio:
                        pics[i].width!.toInt() / pics[i].height!.toInt(),
                  ),
                ),
              );
            },
          ),
        );
      }
      spanChilds.add(
        WidgetSpan(
          child: LayoutBuilder(
            builder: (context, BoxConstraints box) {
              double maxWidth = box.maxWidth.truncateToDouble();
              double crossCount = len < 3 ? 2 : 3;
              double height = maxWidth /
                      crossCount *
                      (len % crossCount == 0
                          ? len ~/ crossCount
                          : len ~/ crossCount + 1) +
                  6;
              return Container(
                padding: const EdgeInsets.only(top: 6),
                height: height,
                child: GridView.count(
                  padding: EdgeInsets.zero,
                  physics: const NeverScrollableScrollPhysics(),
                  crossAxisCount: crossCount.toInt(),
                  mainAxisSpacing: 4.0,
                  crossAxisSpacing: 4.0,
                  childAspectRatio: 1,
                  children: list,
                ),
              );
            },
          ),
        ),
      );
    }
    return TextSpan(
      children: spanChilds,
    );
  }

  void onPreviewImg(picList, initIndex, context) {
    Navigator.of(context).push(
      HeroDialogRoute<void>(
        builder: (BuildContext context) => InteractiveviewerGallery(
          sources: picList,
          initIndex: initIndex,
          itemBuilder: (
            BuildContext context,
            int index,
            bool isFocus,
            bool enablePageView,
          ) {
            return GestureDetector(
              behavior: HitTestBehavior.opaque,
              onTap: () {
                if (enablePageView) {
                  Navigator.of(context).pop();
                }
              },
              child: Center(
                child: Hero(
                  tag: picList[index],
                  child: CachedNetworkImage(
                    fadeInDuration: const Duration(milliseconds: 0),
                    imageUrl: picList[index],
                    fit: BoxFit.contain,
                  ),
                ),
              ),
            );
          },
          onPageChanged: (int pageIndex) {},
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    TextStyle authorStyle =
        TextStyle(color: Theme.of(context).colorScheme.primary);

    return Container(
      width: double.infinity,
      padding: const EdgeInsets.fromLTRB(12, 0, 12, 6),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          if (widget.item.modules.moduleDynamic.topic != null) ...[
            GestureDetector(
              child: Text(
                '#${widget.item.modules.moduleDynamic.topic.name}',
                style: authorStyle,
              ),
            ),
          ],
          IgnorePointer(
            // 禁用SelectableRegion的触摸交互功能
            ignoring: widget.source == 'detail' ? false : true,
            child: SelectableRegion(
              magnifierConfiguration: const TextMagnifierConfiguration(),
              focusNode: FocusNode(),
              selectionControls: MaterialTextSelectionControls(),
              child: Text.rich(
                /// fix 默认20px高度
                style: const TextStyle(height: 0),
                richNode(widget.item, context),
                maxLines: widget.source == 'detail' ? 999 : 3,
                overflow: TextOverflow.ellipsis,
              ),
            ),
          ),
          if (hasPics) ...[
            Text.rich(picsNodes()),
          ]
        ],
      ),
    );
  }
}