lemmur-app-android/lib/pages/create_post.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:lemmy_api_client/lemmy_api_client.dart';

import '../hooks/delayed_loading.dart';
import '../hooks/logged_in_action.dart';
import '../hooks/stores.dart';
import '../util/goto.dart';
import '../widgets/markdown_text.dart';
import 'full_post.dart';

class CreatePostFab extends HookWidget {
  @override
  Widget build(BuildContext context) {
    final loggedInAction = useLoggedInAction(null, any: true);

    return FloatingActionButton(
      child: Icon(Icons.add),
      onPressed: loggedInAction((_) => showCupertinoModalPopup(
          context: context, builder: (_) => CreatePost())),
    );
  }
}

class CreatePost extends HookWidget {
  final String instanceUrl;
  final String communityName;
  final int communityId;

  final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey();

  CreatePost()
      : instanceUrl = null,
        communityName = null,
        communityId = null;

  CreatePost.to({
    @required this.instanceUrl,
    @required this.communityName,
    @required this.communityId,
  })  : assert(instanceUrl != null),
        assert(communityName != null),
        assert(communityId != null);

  @override
  Widget build(BuildContext context) {
    final urlController = useTextEditingController();
    final titleController = useTextEditingController();
    final bodyController = useTextEditingController();
    final accStore = useAccountsStore();
    final selectedInstance =
        useState(instanceUrl ?? accStore.loggedInInstances.first);
    final selectedCommunity = useState(communityName);
    final showFancy = useState(false);
    final nsfw = useState(false);
    final delayed = useDelayedLoading();

    // TODO: use drop down from AddAccountPage
    final instanceDropdown = InputDecorator(
      decoration: const InputDecoration(
          contentPadding: EdgeInsets.symmetric(vertical: 1, horizontal: 20),
          border: OutlineInputBorder()),
      child: DropdownButtonHideUnderline(
        child: DropdownButton<String>(
          value: selectedInstance.value,
          onChanged: (val) => selectedInstance.value = val,
          items: accStore.loggedInInstances
              .map((instance) => DropdownMenuItem(
                    value: instance,
                    child: Text(instance),
                  ))
              .toList(),
        ),
      ),
    );

    final url = TextField(
      controller: urlController,
      decoration: InputDecoration(
          border: OutlineInputBorder(),
          labelText: 'URL',
          suffixIcon: Icon(Icons.link)),
    );

    final title = TextField(
      controller: titleController,
      minLines: 1,
      maxLines: 2,
      decoration:
          InputDecoration(border: OutlineInputBorder(), labelText: 'Title'),
    );

    final body = IndexedStack(
      index: showFancy.value ? 1 : 0,
      children: [
        TextField(
          controller: bodyController,
          expands: true,
          maxLines: null,
          textAlignVertical: TextAlignVertical.top,
          decoration:
              InputDecoration(border: OutlineInputBorder(), labelText: 'Body'),
        ),
        Padding(
          padding: const EdgeInsets.all(16),
          child: MarkdownText(
            bodyController.text,
            instanceUrl: selectedInstance.value,
          ),
        )
      ],
    );

    handleSubmit() async {
      final api = LemmyApi(selectedInstance.value).v1;

      final token = accStore.defaultTokenFor(selectedInstance.value);

      delayed.start();
      try {
        final res = await api.createPost(
            url: urlController.text.isEmpty ? null : urlController.text,
            body: bodyController.text.isEmpty ? null : bodyController.text,
            nsfw: nsfw.value,
            name: titleController.text,
            communityId: null,
            auth: token.raw);
        goTo(context, (_) => FullPostPage.fromPostView(res));
        return;
        // ignore: avoid_catches_without_on_clauses
      } catch (e) {
        print(e);
        scaffoldKey.currentState
            .showSnackBar(SnackBar(content: Text('Failed to post')));
      }
      delayed.cancel();
    }

    return Scaffold(
      key: scaffoldKey,
      appBar: AppBar(
        leading: IconButton(
          icon: Icon(Icons.close),
          onPressed: Navigator.of(context).pop,
        ),
        actions: [
          IconButton(
            icon: Icon(showFancy.value ? Icons.build : Icons.brush),
            onPressed: () => showFancy.value = !showFancy.value,
          ),
        ],
      ),
      body: Column(
        children: [
          instanceDropdown,
          url,
          title,
          Expanded(child: body),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              GestureDetector(
                onTap: () => nsfw.value = !nsfw.value,
                child: Row(
                  children: [
                    Checkbox(
                      value: nsfw.value,
                      onChanged: (val) => nsfw.value = val,
                    ),
                    Text('NSFW')
                  ],
                ),
              ),
              FlatButton(
                onPressed: delayed.pending ? () {} : handleSubmit,
                child: delayed.loading
                    ? CircularProgressIndicator()
                    : Text('post'),
              )
            ],
          ),
        ],
      ),
    );
  }
}