SolarAgent/lib/widgets/feed.dart

import 'package:flutter/material.dart';
import 'package:flutter_carousel_widget/flutter_carousel_widget.dart';
import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:go_router/go_router.dart';
import 'package:solaragent/models/feed.dart';
import 'package:solaragent/router.dart';
import 'package:solaragent/widgets/image.dart';
import 'package:solaragent/widgets/posts/comments.dart';
import 'package:solaragent/widgets/posts/content/article.dart';
import 'package:solaragent/widgets/posts/content/moment.dart';
import 'package:solaragent/widgets/posts/reactions.dart';

class FeedItem extends StatefulWidget {
  final Feed item;
  final bool? brief;

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

  @override
  State<FeedItem> createState() => _FeedItemState();
}

class _FeedItemState extends State<FeedItem> {
  int reactionCount = 0;
  Map<String, dynamic>? reactionList;

  void viewComments(BuildContext context) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      builder: (context) => CommentList(parent: widget.item),
    );
  }

  void viewReactions(BuildContext context) {
    showModalBottomSheet(
      context: context,
      builder: (context) => ReactionList(
        parent: widget.item,
        onReact: (symbol, num) {
          setState(() {
            if (!reactionList!.containsKey(symbol)) {
              reactionList![symbol] = 0;
            }

            reactionCount += num;
            reactionList![symbol] += num;
          });
        },
      ),
    );
  }

  bool hasAttachments() =>
      widget.item.modelType == "moment" &&
      widget.item.attachments != null &&
      widget.item.attachments!.isNotEmpty;

  String getDescription(String desc) =>
      desc.isEmpty ? "No description yet." : desc;

  String getFileUrl(String fileId) =>
      'https://co.solsynth.dev/api/attachments/o/$fileId';

  Widget buildContent() {
    switch (widget.item.modelType) {
      case "article":
        return ArticleContent(item: widget.item, brief: widget.brief ?? false);
      default:
        return MomentContent(item: widget.item, brief: widget.brief ?? false);
    }
  }

  Widget buildItem(BuildContext context) {
    return Column(
      children: [
        Container(
          color: Colors.grey[50],
          child: ListTile(
            title: Text(widget.item.author.name),
            leading: CircleAvatar(
              backgroundImage: NetworkImage(widget.item.author.avatar),
            ),
            subtitle: Text(
              getDescription(widget.item.author.description),
              overflow: TextOverflow.ellipsis,
              maxLines: 1,
              softWrap: false,
            ),
          ),
        ),
        buildContent(),
        hasAttachments()
            ? Container(
                decoration: const BoxDecoration(
                  border: Border(
                      top: BorderSide(width: 0.3, color: Color(0xffdedede))),
                ),
                child: FlutterCarousel(
                  options: CarouselOptions(
                    height: 360.0,
                    viewportFraction: 1.0,
                    showIndicator: true,
                    slideIndicator: const CircularSlideIndicator(),
                  ),
                  items: widget.item.attachments?.map((x) {
                    return Builder(
                      builder: (BuildContext context) {
                        return SizedBox(
                          width: MediaQuery.of(context).size.width,
                          child: InkWell(
                            child: Image.network(
                              getFileUrl(x.fileId),
                              fit: BoxFit.cover,
                            ),
                            onTap: () {
                              Navigator.push(context,
                                  MaterialPageRoute(builder: (_) {
                                return ImageLightbox(
                                  url: getFileUrl(x.fileId),
                                );
                              }));
                            },
                          ),
                        );
                      },
                    );
                  }).toList(),
                ),
              )
            : Container(),
        Container(
          padding: const EdgeInsets.symmetric(horizontal: 8),
          decoration: const BoxDecoration(
            border: Border(
              top: BorderSide(width: 0.3, color: Color(0xffdedede)),
            ),
          ),
          child: Row(
            children: [
              TextButton.icon(
                icon: const Icon(Icons.comment),
                label: Text(widget.item.commentCount.toString()),
                onPressed: () => viewComments(context),
              ),
              TextButton.icon(
                icon: const Icon(Icons.emoji_emotions),
                label: Text(reactionCount.toString()),
                style: TextButton.styleFrom(foregroundColor: Colors.teal),
                onPressed: () => viewReactions(context),
              ),
            ],
          ),
        ),
      ],
    );
  }

  @override
  void initState() {
    reactionCount = widget.item.reactionCount;
    reactionList = widget.item.reactionList ?? <String, dynamic>{};
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return (widget.brief ?? false)
        ? GestureDetector(
            child: buildItem(context),
            onTap: () => router.push(
              "/post/${widget.item.modelType}/${widget.item.alias}",
            ),
          )
        : buildItem(context);
  }
}