feat:支持排行榜功能

lib/pages/rank/zone/controller.dart

@@ -0,0 +1,53 @@
+import 'package:get/get.dart';
+import 'package:flutter/material.dart';
+import 'package:pilipala/http/video.dart';
+import 'package:pilipala/models/model_hot_video_item.dart';
+
+class ZoneController extends GetxController {
+  final ScrollController scrollController = ScrollController();
+  RxList<HotVideoItemModel> videoList = <HotVideoItemModel>[].obs;
+  bool isLoadingMore = false;
+  bool flag = false;
+  OverlayEntry? popupDialog;
+  int zoneID = 0;
+
+  // 获取推荐
+  Future queryRankFeed(type, rid) async {
+    zoneID = rid;
+    var res = await VideoHttp.getRankVideoList(zoneID);
+    if (res['status']) {
+      if (type == 'init') {
+        videoList.value = res['data'];
+      } else if (type == 'onRefresh') {
+        videoList.clear();
+        videoList.addAll(res['data']);
+      } else if (type == 'onLoad') {
+        videoList.clear();
+        videoList.addAll(res['data']);
+      }
+    }
+    isLoadingMore = false;
+    return res;
+  }
+
+  // 下拉刷新
+  Future onRefresh() async {
+    queryRankFeed('onRefresh', zoneID);
+  }
+
+  // 上拉加载
+  Future onLoad() async {
+    queryRankFeed('onLoad', zoneID);
+  }
+
+  // 返回顶部并刷新
+  void animateToTop() async {
+    if (scrollController.offset >=
+        MediaQuery.of(Get.context!).size.height * 5) {
+      scrollController.jumpTo(0);
+    } else {
+      await scrollController.animateTo(0,
+          duration: const Duration(milliseconds: 500), curve: Curves.easeInOut);
+    }
+  }
+}