import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:isekai_wiki/api/response/page_info.dart';
import 'package:isekai_wiki/components/flutter_scale_tap/flutter_scale_tap.dart';
import 'package:isekai_wiki/components/utils.dart';
import 'package:isekai_wiki/pages/article.dart';
import 'package:isekai_wiki/reactive/reactive.dart';
import 'package:like_button/like_button.dart';
import 'package:pull_down_button/pull_down_button.dart';
import 'package:skeletons/skeletons.dart';

import '../styles.dart';

typedef AddFavoriteCallback = Future<bool> Function(
    PageInfo pageInfo, bool localIsFavorite, bool showToast);

typedef PageInfoCallback = Future<void> Function(PageInfo pageInfo);

class PageCardStyles {
  static const double cardInnerHeight = 150;
  static const cardInnerPadding = EdgeInsets.only(top: 16, left: 20, right: 20, bottom: 12);
  static const double footerButtonSize = 30;
  static const double footerButtonInnerSize = 26;
}

class PageCardController extends GetxController {
  var isLoading = false.obs;

  var pageInfo = Rx<PageInfo?>(null);

  var isFavorite = false.obs;

  AddFavoriteCallback? onSetFavorite;
  PageInfoCallback? onShare;

  Future<bool> handleFavoriteClick(bool localIsFavorite) async {
    if (pageInfo.value != null && onSetFavorite != null) {
      return await onSetFavorite!.call(pageInfo.value!, localIsFavorite, false);
    } else {
      return false;
    }
  }

  Future<void> handleAddFavoriteMenuItemClick() async {
    if (pageInfo.value != null && onSetFavorite != null) {
      await onSetFavorite!.call(pageInfo.value!, true, true);
    }
  }

  Future<void> handleRemoveFavoriteMenuItemClick() async {
    if (pageInfo.value != null && onSetFavorite != null) {
      await onSetFavorite!.call(pageInfo.value!, false, true);
    }
  }

  handleShareClick() async {
    if (pageInfo.value != null && onShare != null) {
      await onShare!.call(pageInfo.value!);
    }
  }

  void handlePageInfoClick() {
    if (pageInfo.value != null) {}
  }

  Future<void> handleCardClick() async {
    if (isLoading.value) {
      return;
    }

    if (pageInfo.value != null) {
      var cPageInfo = pageInfo.value!;
      await Navigator.of(Get.context!).push(
        CupertinoPageRoute(
          builder: (_) => ArticlePage(
            targetPage: cPageInfo.title,
            initialArticleData: MinimumArticleData(
              title: cPageInfo.mainTitle,
              description: cPageInfo.description,
              mainCategory: cPageInfo.mainCategory,
              updateTime: cPageInfo.updatedTime,
            ),
          ),
        ),
      );
    }
  }
}

class PageCard extends StatefulWidget {
  final bool isLoading;
  final PageInfo? pageInfo;
  final bool isFavorite;
  final AddFavoriteCallback? onSetFavorite;
  final PageInfoCallback? onShare;

  const PageCard({
    super.key,
    this.isLoading = false,
    this.pageInfo,
    this.isFavorite = false,
    this.onSetFavorite,
    this.onShare,
  });

  @override
  State<StatefulWidget> createState() => _PageCardState();
}

class _PageCardState extends ReactiveState<PageCard> {
  var c = PageCardController();
  double textScale = 1;

  @override
  void initState() {
    super.initState();
    Get.put(c);
  }

  @override
  void receiveProps() {
    c.isLoading.value = widget.isLoading;
    c.pageInfo.value = widget.pageInfo;
    c.isFavorite.value = widget.isFavorite;
    c.onSetFavorite = widget.onSetFavorite;
    c.onShare = widget.onShare;
  }

  Widget _actionButtonSkeleton(bool isLoading, Widget child) {
    return Skeleton(
      isLoading: isLoading,
      skeleton: const SkeletonLine(
        style: SkeletonLineStyle(
            width: PageCardStyles.footerButtonSize, height: PageCardStyles.footerButtonSize),
      ),
      child: child,
    );
  }

  Widget _buildCardHeader(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 10),
      child: Skeleton(
        isLoading: c.isLoading.value,
        skeleton: SkeletonLine(
          style: SkeletonLineStyle(
              height: (Styles.pageCardTitle.fontSize! + 4) * textScale, randomLength: true),
        ),
        child: Text(c.pageInfo.value?.mainTitle ?? "页面信息丢失", style: Styles.pageCardTitle),
      ),
    );
  }

  Widget _buildCardBody(BuildContext context) {
    return Expanded(
      child: Padding(
        padding: const EdgeInsets.only(bottom: 8),
        child: IntrinsicHeight(
          child: Row(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Expanded(
                flex: 1,
                child: c.isLoading.value
                    ? ClipRect(
                        child: SkeletonParagraph(
                          style: SkeletonParagraphStyle(
                            lines: 3,
                            padding: const EdgeInsets.symmetric(vertical: 4, horizontal: 0),
                            lineStyle: SkeletonLineStyle(
                                randomLength: true,
                                height: Styles.pageCardDescription.fontSize! * textScale),
                          ),
                        ),
                      )
                    : Text(c.pageInfo.value?.description ?? "没有简介",
                        overflow: TextOverflow.fade, style: Styles.pageCardDescription),
              ),
              const SizedBox(width: 10),
              Skeleton(
                isLoading: c.isLoading.value,
                skeleton: const SkeletonAvatar(
                  style: SkeletonAvatarStyle(width: 114, height: 114),
                ),
                child: Container(),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildCardFooter(BuildContext context) {
    return ScaleTapIgnore(
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          // 分类信息
          c.pageInfo.value?.mainCategory != null
              ? Chip(
                  backgroundColor: const Color.fromARGB(1, 238, 238, 238),
                  label: Text(c.pageInfo.value!.mainCategory!,
                      style: const TextStyle(color: Colors.black54)),
                  materialTapTargetSize: MaterialTapTargetSize.shrinkWrap)
              : const SizedBox(),
          c.pageInfo.value?.mainCategory != null ? const SizedBox(width: 10) : const SizedBox(),
          // 发布日期
          Skeleton(
            isLoading: c.isLoading.value,
            skeleton: const SkeletonLine(
              style: SkeletonLineStyle(width: 100),
            ),
            child: Text(
                c.pageInfo.value?.updatedTime != null
                    ? Utils.getFriendDate(c.pageInfo.value!.updatedTime!)
                    : "",
                style: Styles.pageCardDescription),
          ),
          const Spacer(),
          // 收藏键
          Obx(
            () => _actionButtonSkeleton(
              c.isLoading.value,
              LikeButton(
                size: PageCardStyles.footerButtonInnerSize,
                isLiked: c.isFavorite.value,
                onTap: c.handleFavoriteClick,
                likeBuilder: (bool isLiked) {
                  return Icon(
                    isLiked ? Icons.favorite : Icons.favorite_border,
                    color: isLiked ? Colors.red : Colors.grey,
                    size: PageCardStyles.footerButtonInnerSize,
                  );
                },
              ),
            ),
          ),
          const SizedBox(width: 18),
          // 菜单键
          _actionButtonSkeleton(
            c.isLoading.value,
            SizedBox(
              height: PageCardStyles.footerButtonSize,
              width: PageCardStyles.footerButtonSize,
              child: PullDownButton(
                routeTheme: PullDownMenuRouteTheme(
                  endShadow: BoxShadow(
                    color: Colors.grey.withOpacity(0.6),
                    spreadRadius: 1,
                    blurRadius: 20,
                    offset: const Offset(0, 2),
                  ),
                ),
                itemBuilder: (context) => [
                  c.isFavorite.value
                      ? PullDownMenuItem(
                          title: '取消收藏',
                          icon: CupertinoIcons.heart_fill,
                          onTap: c.handleRemoveFavoriteMenuItemClick,
                        )
                      : PullDownMenuItem(
                          title: '收藏',
                          icon: CupertinoIcons.heart,
                          onTap: c.handleRemoveFavoriteMenuItemClick,
                        ),
                  const PullDownMenuDivider(),
                  PullDownMenuItem(
                    title: '分享',
                    icon: CupertinoIcons.share,
                    onTap: c.handleShareClick,
                  ),
                  const PullDownMenuDivider.large(),
                  /*
                  PullDownMenuItem(
                    title: '相似推荐',
                    onTap: () {},
                    icon: CupertinoIcons.ellipsis_circle,
                  ),
                  const PullDownMenuDivider.large(),
                  */
                  PullDownMenuItem(
                    title: '页面详情',
                    onTap: c.handlePageInfoClick,
                    icon: CupertinoIcons.info_circle,
                  ),
                ],
                position: PullDownMenuPosition.under,
                buttonBuilder: (context, showMenu) => IconButton(
                  onPressed: showMenu,
                  padding: const EdgeInsets.all(0.0),
                  splashRadius: PageCardStyles.footerButtonInnerSize - 4,
                  iconSize: PageCardStyles.footerButtonInnerSize,
                  icon: const Icon(
                    Icons.more_horiz,
                    color: Colors.grey,
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildCard(BuildContext context) {
    return Card(
      elevation: 4.0,
      // 圆角
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.all(Radius.circular(Styles.isXs ? 0 : 14.0)),
      ),
      // 抗锯齿
      clipBehavior: Clip.antiAlias,
      semanticContainer: false,
      child: Padding(
        padding: PageCardStyles.cardInnerPadding,
        child: SizedBox(
          height: PageCardStyles.cardInnerHeight * textScale,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // 标题
              _buildCardHeader(context),
              // 简介、图片
              _buildCardBody(context),
              // Footer
              _buildCardFooter(context),
            ],
          ),
        ),
      ),
    );
  }

  @override
  Widget render(BuildContext context) {
    textScale = MediaQuery.of(context).textScaleFactor;

    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
      child: Obx(
        () => ScaleTap(
          enableFeedback: c.isLoading.value,
          onPressed: c.handleCardClick,
          child: GetBuilder<PageCardController>(
            init: c,
            builder: (GetxController c) => _buildCard(context),
          ),
        ),
      ),
    );
  }
}