Solian/lib/screens/feed.dart
2024-07-06 20:55:53 +08:00

108 lines
3.2 KiB
Dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
import 'package:solian/models/pagination.dart';
import 'package:solian/models/post.dart';
import 'package:solian/providers/auth.dart';
import 'package:solian/providers/content/post.dart';
import 'package:solian/router.dart';
import 'package:solian/screens/account/notification.dart';
import 'package:solian/theme.dart';
import 'package:solian/widgets/app_bar_title.dart';
import 'package:solian/widgets/current_state_action.dart';
import 'package:solian/widgets/posts/post_list.dart';
class FeedScreen extends StatefulWidget {
const FeedScreen({super.key});
@override
State<FeedScreen> createState() => _FeedScreenState();
}
class _FeedScreenState extends State<FeedScreen> {
final PagingController<int, Post> _pagingController =
PagingController(firstPageKey: 0);
getPosts(int pageKey) async {
final PostProvider provider = Get.find();
Response resp;
try {
resp = await provider.listPost(pageKey);
} catch (e) {
_pagingController.error = e;
return;
}
final PaginationResult result = PaginationResult.fromJson(resp.body);
final parsed = result.data?.map((e) => Post.fromJson(e)).toList();
if (parsed != null && parsed.length >= 10) {
_pagingController.appendPage(parsed, pageKey + parsed.length);
} else if (parsed != null) {
_pagingController.appendLastPage(parsed);
}
}
@override
void initState() {
super.initState();
_pagingController.addPageRequestListener(getPosts);
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Material(
color: Theme.of(context).colorScheme.surface,
child: RefreshIndicator(
onRefresh: () => Future.sync(() => _pagingController.refresh()),
child: CustomScrollView(
slivers: [
SliverAppBar(
title: AppBarTitle('feed'.tr),
centerTitle: false,
floating: true,
titleSpacing: SolianTheme.titleSpacing(context),
toolbarHeight: SolianTheme.toolbarHeight(context),
actions: [
const BackgroundStateWidget(),
const NotificationButton(),
const FeedCreationButton(),
SizedBox(
width: SolianTheme.isLargeScreen(context) ? 8 : 16,
),
],
),
PostListWidget(controller: _pagingController),
],
),
),
),
);
}
}
class FeedCreationButton extends StatelessWidget {
const FeedCreationButton({super.key});
@override
Widget build(BuildContext context) {
final AuthProvider auth = Get.find();
return FutureBuilder(
future: auth.isAuthorized,
builder: (context, snapshot) {
if (snapshot.hasData && snapshot.data == true) {
return IconButton(
icon: const Icon(Icons.add_circle),
onPressed: () {
AppRouter.instance.pushNamed('postPublishing');
},
);
}
return const SizedBox();
});
}
}