import 'package:flutter/material.dart';
import 'package:sendtrain/classes/activity_action.dart';
import 'package:sendtrain/classes/media.dart';
import 'package:sendtrain/models/activity_model.dart';
import 'package:sendtrain/widgets/activity_action_view.dart';
import 'package:sendtrain/widgets/media_card.dart';

class ActivityView extends StatelessWidget {
  const ActivityView({super.key, required this.activity});

  final ActivityModel activity;

  @override
  Widget build(BuildContext context) {
    var content = [
      AppBar(
        centerTitle: true,
        title: const Text('Activity',
            style: TextStyle(fontSize: 15)),
      ),
      Padding(
          padding:
              const EdgeInsets.only(left: 15, right: 20, top: 15, bottom: 10),
          child: Text(
              maxLines: 1,
              style:
                  const TextStyle(fontSize: 25, fontWeight: FontWeight.bold),
              activity.title)),
      ActivityViewCategories(categories: activity.categories),
      Padding(
          padding:
              const EdgeInsets.only(top: 0, bottom: 10, left: 15, right: 15),
          child: Text(
              textAlign: TextAlign.left,
              style: const TextStyle(fontSize: 15),
              activity.description)),
      ActivityViewMedia(activity: activity),
      const Padding(
          padding: EdgeInsets.fromLTRB(15, 30, 0, 10),
          child: Text(
              textAlign: TextAlign.left,
              style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
              'Actions:'))
    ];

    for (var action in activity.actions){
      content.add(ActivityActionView(action: action));
    }

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: content
    );
  }
}

class ActivityViewCategories extends StatelessWidget {
  const ActivityViewCategories({super.key, this.categories});

  final List<String>? categories;

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Padding(
            padding: const EdgeInsets.only(bottom: 10),
            child: SizedBox(
                height: 40,
                child: ListView.builder(
                  shrinkWrap: true,
                  scrollDirection: Axis.horizontal,
                  padding: const EdgeInsets.fromLTRB(10, 0, 10, 0),
                  itemCount: categories?.length,
                  itemBuilder: (BuildContext context, int index) {
                    return Padding(
                        padding: const EdgeInsets.only(right: 5),
                        child: ActionChip(
                          visualDensity: VisualDensity.compact,
                          avatar: const Icon(Icons.check_circle_outline),
                          label: Text(maxLines: 1, '${categories?[index]}'),
                          onPressed: () {},
                        ));
                  },
                ))),
      ],
    );
  }
}

class ActivityViewMedia extends StatelessWidget {
  const ActivityViewMedia({super.key, this.activity});

  final ActivityModel? activity;

  @override
  Widget build(BuildContext context) {
    List<Media> media = [];

    for (ActivityAction action in activity!.actions) {
      if (action.media!.isNotEmpty) {
        media.addAll(action.media as Iterable<Media>);
      }
    }

    List<Widget> mediaCards = List.generate(media.length,
        (i) => MediaCard(media: media[i]));

    return Column(
      children: [
        SizedBox(
            width: double.infinity,
            height: 100,
            child: GridView.count(
                padding: const EdgeInsets.fromLTRB(15, 0, 0, 0),
                scrollDirection: Axis.horizontal,
                crossAxisSpacing: 5,
                mainAxisSpacing: 5,
                crossAxisCount: 1,
                children: mediaCards))
      ],
    );
  }
}