refactor: fan

lib/http/fan.dart

@@ -1,8 +1,11 @@
+import 'package:PiliPalaX/http/loading_state.dart';
+
 import '../models/fans/result.dart';
 import 'index.dart';
 
 class FanHttp {
-  static Future fans({int? vmid, int? pn, int? ps, String? orderType}) async {
+  static Future<LoadingState> fans(
+      {int? vmid, int? pn, int? ps, String? orderType}) async {
     var res = await Request().get(Api.fans, data: {
       'vmid': vmid,
       'pn': pn,
@@ -11,13 +14,9 @@ class FanHttp {
       'order_type': orderType,
     });
     if (res.data['code'] == 0) {
-      return {'status': true, 'data': FansDataModel.fromJson(res.data['data'])};
+      return LoadingState.success(FansDataModel.fromJson(res.data['data']));
     } else {
-      return {
-        'status': false,
-        'data': [],
-        'msg': res.data['message'],
-      };
+      return LoadingState.error(res.data['message']);
     }
   }
 }

lib/pages/fan/controller.dart

@@ -1,21 +1,19 @@
-import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+import 'package:PiliPalaX/http/fan.dart';
+import 'package:PiliPalaX/http/loading_state.dart';
+import 'package:PiliPalaX/pages/common/common_controller.dart';
 import 'package:get/get.dart';
 import 'package:hive/hive.dart';
-import 'package:PiliPalaX/http/fan.dart';
-import 'package:PiliPalaX/models/fans/result.dart';
 import 'package:PiliPalaX/utils/storage.dart';
 
-class FansController extends GetxController {
+class FansController extends CommonController {
   Box userInfoCache = GStorage.userInfo;
-  int pn = 1;
   int ps = 20;
   int total = 0;
-  RxList<FansItemModel> fansList = <FansItemModel>[].obs;
   late int? mid;
   late String? name;
   dynamic userInfo;
-  RxString loadingText = '加载中...'.obs;
   RxBool isOwner = false.obs;
+  bool isEnd = false;
 
   @override
   void onInit() {
@@ -26,40 +24,44 @@ class FansController extends GetxController {
         : userInfo?.mid;
     isOwner.value = mid == userInfo?.mid;
     name = Get.parameters['name'] ?? userInfo?.uname;
+
+    queryData();
   }
 
-  Future queryFans(type) async {
-    if (type == 'init' || type == 'refresh') {
-      pn = 1;
-      loadingText.value == '加载中...';
+  @override
+  Future onRefresh() {
+    isEnd = false;
+    return super.onRefresh();
   }
-    if (loadingText.value == '没有更多了') {
-      return;
+
+  @override
+  Future queryData([bool isRefresh = true]) {
+    if (isEnd) {
+      return Future.value();
     }
-    var res = await FanHttp.fans(
+    return super.queryData(isRefresh);
+  }
+
+  @override
+  bool customHandleResponse(Success response) {
+    if ((currentPage == 1 && response.response.total < ps) ||
+        response.response.list.isEmpty) {
+      isEnd = true;
+    }
+    List currentList = loadingState.value is Success
+        ? (loadingState.value as Success).response
+        : [];
+    loadingState.value = currentPage == 1
+        ? LoadingState.success(response.response.list)
+        : LoadingState.success(currentList + response.response.list);
+    return true;
+  }
+
+  @override
+  Future<LoadingState> customGetData() => FanHttp.fans(
         vmid: mid,
-      pn: pn,
+        pn: currentPage,
         ps: ps,
         orderType: 'attention',
       );
-    if (res['status']) {
-      if (type == 'init') {
-        fansList.value = res['data'].list;
-        total = res['data'].total;
-      } else if (type == 'onLoad') {
-        fansList.addAll(res['data'].list);
-      }
-      print('fansList: ${fansList.length}, total: $total');
-      if ((pn == 1 && total < ps) || res['data'].list.isEmpty) {
-        loadingText.value = '没有更多了';
-      }
-      pn += 1;
-      if (total > ps && pn == 2) {
-        queryFans('onLoad');
-      }
-    } else {
-      SmartDialog.showToast(res['msg']);
-    }
-    return res;
-  }
 }

lib/pages/fan/view.dart

@@ -1,9 +1,9 @@
+import 'package:PiliPalaX/http/loading_state.dart';
 import 'package:easy_debounce/easy_throttle.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:PiliPalaX/common/widgets/http_error.dart';
 import 'package:PiliPalaX/common/widgets/no_data.dart';
-import 'package:PiliPalaX/models/fans/result.dart';
 
 import '../../common/constants.dart';
 import '../../utils/grid.dart';
@@ -20,21 +20,18 @@ class FansPage extends StatefulWidget {
 class _FansPageState extends State<FansPage> {
   late String mid;
   late FansController _fansController;
-  final ScrollController scrollController = ScrollController();
-  Future? _futureBuilderFuture;
 
   @override
   void initState() {
     super.initState();
     mid = Get.parameters['mid']!;
     _fansController = Get.put(FansController(), tag: mid);
-    _futureBuilderFuture = _fansController.queryFans('init');
-    scrollController.addListener(
+    _fansController.scrollController.addListener(
       () async {
-        if (scrollController.position.pixels >=
-            scrollController.position.maxScrollExtent - 200) {
+        if (_fansController.scrollController.position.pixels >=
+            _fansController.scrollController.position.maxScrollExtent - 200) {
           EasyThrottle.throttle('follow', const Duration(seconds: 1), () {
-            _fansController.queryFans('onLoad');
+            _fansController.onLoadMore();
           });
         }
       },
@@ -43,8 +40,7 @@ class _FansPageState extends State<FansPage> {
 
   @override
   void dispose() {
-    scrollController.removeListener(() {});
-    scrollController.dispose();
+    _fansController.scrollController.removeListener(() {});
     super.dispose();
   }
 
@@ -62,46 +58,40 @@ class _FansPageState extends State<FansPage> {
         ),
       ),
       body: RefreshIndicator(
-        onRefresh: () async => await _fansController.queryFans('init'),
+        onRefresh: () async => await _fansController.onRefresh(),
         child: CustomScrollView(
           physics: const AlwaysScrollableScrollPhysics(),
-            controller: scrollController,
+          controller: _fansController.scrollController,
           slivers: [
-              FutureBuilder(
-                future: _futureBuilderFuture,
-                builder: (context, snapshot) {
-                  if (snapshot.connectionState == ConnectionState.done &&
-                      snapshot.data != null) {
-                    var data = snapshot.data;
-                    if (data['status']) {
-                      return Obx(() {
-                        List<FansItemModel> list = _fansController.fansList;
-                        return list.isNotEmpty
+            Obx(() => _buildBody(_fansController.loadingState.value)),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildBody(LoadingState loadingState) {
+    return loadingState is Success
+        ? loadingState.response.isNotEmpty
             ? SliverGrid(
-                                gridDelegate:
-                                    SliverGridDelegateWithMaxCrossAxisExtent(
+                gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
                     mainAxisSpacing: StyleString.cardSpace,
                     crossAxisSpacing: StyleString.safeSpace,
-                                        maxCrossAxisExtent:
-                                            Grid.maxRowWidth * 2,
+                    maxCrossAxisExtent: Grid.maxRowWidth * 2,
                     mainAxisExtent: 56),
                 delegate: SliverChildBuilderDelegate(
                   (BuildContext context, int index) {
-                                    return fanItem(item: list[index]);
+                    return fanItem(item: loadingState.response[index]);
                   },
-                                  childCount: list.length,
+                  childCount: loadingState.response.length,
                 ))
-                            : const NoData();
-                      });
-                    } else {
-                      return HttpError(
-                        errMsg: data['msg'],
-                        fn: () => _fansController.queryFans('init'),
-                      );
-                    }
-                  } else {
-                    // 骨架屏
-                    return const SliverToBoxAdapter(
+            : const NoData()
+        : loadingState is Error
+            ? HttpError(
+                errMsg: loadingState.errMsg,
+                fn: _fansController.onReload,
+              )
+            : const SliverToBoxAdapter(
                 child: SizedBox(
                   height: 200,
                   child: Center(
@@ -110,10 +100,4 @@ class _FansPageState extends State<FansPage> {
                 ),
               );
   }
-                },
-              ),
-            ]),
-      ),
-    );
-  }
 }