import 'package:flutter/material.dart';
import 'package:solian/models/post.dart';
import 'package:solian/widgets/posts/content/article.dart';
import 'package:solian/widgets/posts/content/attachment.dart';
import 'package:solian/widgets/posts/content/moment.dart';
import 'package:solian/widgets/posts/item_action.dart';
import 'package:timeago/timeago.dart' as timeago;

class PostItem extends StatefulWidget {
  final Post item;
  final bool? brief;
  final Function? onUpdate;

  const PostItem({super.key, required this.item, this.brief, this.onUpdate});

  @override
  State<PostItem> createState() => _PostItemState();
}

class _PostItemState extends State<PostItem> {
  Map<String, dynamic>? reactionList;

  void viewActions(BuildContext context) {
    showModalBottomSheet(
      context: context,
      builder: (context) => PostItemAction(
        item: widget.item,
        onUpdate: widget.onUpdate,
      ),
    );
  }

  Widget renderContent() {
    switch (widget.item.modelType) {
      case 'article':
        return ArticleContent(item: widget.item, brief: widget.brief ?? true);
      default:
        return MomentContent(item: widget.item, brief: widget.brief ?? true);
    }
  }

  Widget renderAttachments() {
    if (widget.item.modelType == 'article') return Container();

    if (widget.item.attachments != null &&
        widget.item.attachments!.isNotEmpty) {
      return Padding(
        padding: const EdgeInsets.only(top: 8),
        child: AttachmentList(items: widget.item.attachments!),
      );
    } else {
      return Container();
    }
  }

  String getAuthorDescribe() => widget.item.author.description.isNotEmpty
      ? widget.item.author.description
      : 'No description yet.';

  @override
  Widget build(BuildContext context) {
    final headingParts = [
      Padding(
        padding: const EdgeInsets.symmetric(horizontal: 12),
        child: Row(
          children: [
            Text(
              widget.item.author.nick,
              style: const TextStyle(fontWeight: FontWeight.bold),
            ),
            const SizedBox(width: 4),
            Text(timeago.format(widget.item.createdAt))
          ],
        ),
      ),
    ];

    if (widget.brief ?? true) {
      return GestureDetector(
        child: Padding(
          padding: const EdgeInsets.symmetric(vertical: 12, horizontal: 16),
          child: Column(
            children: [
              Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  CircleAvatar(
                    backgroundImage: NetworkImage(widget.item.author.avatar),
                  ),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        ...headingParts,
                        Padding(
                          padding: const EdgeInsets.only(
                              left: 12, right: 12, top: 4),
                          child: renderContent(),
                        ),
                        renderAttachments(),
                      ],
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
        onLongPress: () {
          viewActions(context);
        },
      );
    } else {
      return GestureDetector(
        child: Column(
          children: [
            Padding(
              padding: const EdgeInsets.only(left: 12, right: 12, top: 16),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  CircleAvatar(
                    backgroundImage: NetworkImage(widget.item.author.avatar),
                  ),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        ...headingParts,
                        Padding(
                          padding: const EdgeInsets.symmetric(horizontal: 12),
                          child: Text(
                            getAuthorDescribe(),
                            maxLines: 1,
                          ),
                        ),
                      ],
                    ),
                  ),
                ],
              ),
            ),
            const Padding(
              padding: EdgeInsets.only(top: 6),
              child: Divider(thickness: 0.3),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
              child: renderContent(),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 8),
              child: renderAttachments(),
            )
          ],
        ),
        onLongPress: () {
          viewActions(context);
        },
      );
    }
  }
}