From f03372de6aec2e5259c11405ae9cee3171033ad4 Mon Sep 17 00:00:00 2001
From: alger <algerkc@qq.com>
Date: Thu, 28 Nov 2024 23:33:38 +0800
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20feat:=20=E4=BC=98=E5=8C=96=E6=AD=8C?=
 =?UTF-8?q?=E5=8D=95=E5=88=97=E8=A1=A8=20=E6=B7=BB=E5=8A=A0=E5=8A=A0?=
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 =?UTF-8?q?=E5=8D=95=20mv=20=E6=AD=8C=E5=8D=95=E7=B1=BB=E5=9E=8B=E7=9A=84?=
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---
 src/components/PlaylistType.vue |  82 +++++++++++++++--
 src/views/list/index.vue        | 155 ++++++++++++++++++++++++--------
 src/views/mv/index.vue          |   7 +-
 3 files changed, 201 insertions(+), 43 deletions(-)

diff --git a/src/components/PlaylistType.vue b/src/components/PlaylistType.vue
index 8b76198..9f33acb 100644
--- a/src/components/PlaylistType.vue
+++ b/src/components/PlaylistType.vue
@@ -5,10 +5,21 @@
     <div>
       <template v-for="(item, index) in playlistCategory?.sub" :key="item.name">
         <span
-          v-show="isShowAllPlaylistCategory || index <= 19"
+          v-show="isShowAllPlaylistCategory || index <= 19 || isHiding"
           class="play-list-type-item"
-          :class="setAnimationClass('animate__bounceIn')"
-          :style="setAnimationDelay(index <= 19 ? index : index - 19)"
+          :class="
+            setAnimationClass(
+              index <= 19
+                ? 'animate__bounceIn'
+                : !isShowAllPlaylistCategory
+                  ? 'animate__backOutLeft'
+                  : 'animate__bounceIn',
+            ) +
+            ' ' +
+            'type-item-' +
+            index
+          "
+          :style="getAnimationDelay(index)"
           @click="handleClickPlaylistType(item.name)"
           >{{ item.name }}</span
         >
@@ -17,7 +28,7 @@
         class="play-list-type-showall"
         :class="setAnimationClass('animate__bounceIn')"
         :style="setAnimationDelay(!isShowAllPlaylistCategory ? 25 : playlistCategory?.sub.length || 100 + 30)"
-        @click="isShowAllPlaylistCategory = !isShowAllPlaylistCategory"
+        @click="handleToggleShowAllPlaylistCategory"
       >
         {{ !isShowAllPlaylistCategory ? '显示全部' : '隐藏一些' }}
       </div>
@@ -26,7 +37,7 @@
 </template>
 
 <script lang="ts" setup>
-import { onMounted, ref } from 'vue';
+import { computed, onMounted, ref } from 'vue';
 import { useRouter } from 'vue-router';
 
 import { getPlaylistCategory } from '@/api/home';
@@ -36,6 +47,59 @@ import { setAnimationClass, setAnimationDelay } from '@/utils';
 const playlistCategory = ref<IPlayListSort>();
 // 是否显示全部歌单分类
 const isShowAllPlaylistCategory = ref<boolean>(false);
+const DELAY_TIME = 40;
+const getAnimationDelay = computed(() => {
+  return (index: number) => {
+    if (index <= 19) {
+      return setAnimationDelay(index, DELAY_TIME);
+    }
+    if (!isShowAllPlaylistCategory.value) {
+      const nowIndex = (playlistCategory.value?.sub.length || 0) - index;
+      return setAnimationDelay(nowIndex, DELAY_TIME);
+    }
+    return setAnimationDelay(index - 19, DELAY_TIME);
+  };
+});
+
+watch(isShowAllPlaylistCategory, (newVal) => {
+  if (!newVal) {
+    const elements = playlistCategory.value?.sub.map((item, index) =>
+      document.querySelector(`.type-item-${index}`),
+    ) as HTMLElement[];
+    elements
+      .slice(20)
+      .reverse()
+      .forEach((element, index) => {
+        if (element) {
+          setTimeout(
+            () => {
+              (element as HTMLElement).style.position = 'absolute';
+            },
+            index * DELAY_TIME + 400,
+          );
+        }
+      });
+
+    setTimeout(
+      () => {
+        isHiding.value = false;
+        document.querySelectorAll('.play-list-type-item').forEach((element) => {
+          if (element) {
+            console.log('element', element);
+            (element as HTMLElement).style.position = 'none';
+          }
+        });
+      },
+      (playlistCategory.value?.sub.length || 0 - 19) * DELAY_TIME,
+    );
+  } else {
+    document.querySelectorAll('.play-list-type-item').forEach((element) => {
+      if (element) {
+        (element as HTMLElement).style.position = 'none';
+      }
+    });
+  }
+});
 
 // 加载歌单分类
 const loadPlaylistCategory = async () => {
@@ -52,6 +116,14 @@ const handleClickPlaylistType = (type: string) => {
     },
   });
 };
+
+const isHiding = ref<boolean>(false);
+const handleToggleShowAllPlaylistCategory = () => {
+  isShowAllPlaylistCategory.value = !isShowAllPlaylistCategory.value;
+  if (!isShowAllPlaylistCategory.value) {
+    isHiding.value = true;
+  }
+};
 // 页面初始化
 onMounted(() => {
   loadPlaylistCategory();
diff --git a/src/views/list/index.vue b/src/views/list/index.vue
index b31b52f..d3f0653 100644
--- a/src/views/list/index.vue
+++ b/src/views/list/index.vue
@@ -11,12 +11,31 @@ defineOptions({
   name: 'List',
 });
 
-const recommendList = ref();
+const ITEMS_PER_ROW = ref(6); // 每行显示的数量
+const TOTAL_ITEMS = 30; // 每页数量
+
+// 计算实际需要加载的数量，确保能被每行数量整除
+const getAdjustedLimit = (perRow: number) => {
+  return Math.ceil(TOTAL_ITEMS / perRow) * perRow;
+};
+
+const recommendList = ref<any[]>([]);
 const showMusic = ref(false);
+const page = ref(0);
+const hasMore = ref(true);
+const isLoadingMore = ref(false);
+
+// 计算每个项目在当前页面中的索引
+const getItemAnimationDelay = (index: number) => {
+  const adjustedLimit = getAdjustedLimit(ITEMS_PER_ROW.value);
+  const currentPageIndex = index % adjustedLimit;
+  return setAnimationDelay(currentPageIndex, 30);
+};
 
 const recommendItem = ref<IRecommendItem | null>();
 const listDetail = ref<IListDetail | null>();
 const listLoading = ref(true);
+
 const selectRecommendItem = async (item: IRecommendItem) => {
   listLoading.value = true;
   recommendItem.value = null;
@@ -32,31 +51,84 @@ const route = useRoute();
 const listTitle = ref(route.query.type || '歌单列表');
 
 const loading = ref(false);
-const loadList = async (type: string) => {
-  loading.value = true;
-  const params = {
-    cat: type || '',
-    limit: 30,
-    offset: 0,
-  };
-  const { data } = await getListByCat(params);
-  recommendList.value = data.playlists;
-  loading.value = false;
+const loadList = async (type: string, isLoadMore = false) => {
+  if (!hasMore.value && isLoadMore) return;
+  if (isLoadMore) {
+    isLoadingMore.value = true;
+  } else {
+    loading.value = true;
+    page.value = 0;
+    recommendList.value = [];
+  }
+
+  try {
+    const adjustedLimit = getAdjustedLimit(ITEMS_PER_ROW.value);
+    const params = {
+      cat: type || '',
+      limit: adjustedLimit,
+      offset: page.value * adjustedLimit,
+    };
+    const { data } = await getListByCat(params);
+    if (isLoadMore) {
+      recommendList.value.push(...data.playlists);
+    } else {
+      recommendList.value = data.playlists;
+    }
+    hasMore.value = data.more;
+    page.value++;
+  } catch (error) {
+    console.error('加载歌单列表失败:', error);
+  } finally {
+    loading.value = false;
+    isLoadingMore.value = false;
+  }
 };
 
-if (route.query.type) {
-  loadList(route.query.type as string);
-} else {
-  getRecommendList().then((res: { data: { result: any } }) => {
-    recommendList.value = res.data.result;
-  });
-}
+// 监听滚动事件
+const handleScroll = (e: any) => {
+  const { scrollTop, scrollHeight, clientHeight } = e.target;
+  // 距离底部100px时加载更多
+  if (scrollTop + clientHeight >= scrollHeight - 100 && !isLoadingMore.value && hasMore.value) {
+    loadList(route.query.type as string, true);
+  }
+};
+
+// 监听窗口大小变化，调整每行显示数量
+const updateItemsPerRow = () => {
+  const width = window.innerWidth;
+  if (width > 1800) ITEMS_PER_ROW.value = 8;
+  else if (width > 1500) ITEMS_PER_ROW.value = 6;
+  else if (width > 1200) ITEMS_PER_ROW.value = 5;
+  else if (width > 768) ITEMS_PER_ROW.value = 4;
+  else ITEMS_PER_ROW.value = 3;
+
+  // 如果已经加载了数据，重新加载以适应新的布局
+  if (route.query.type && recommendList.value) {
+    loadList(route.query.type as string);
+  }
+};
+
+onMounted(() => {
+  updateItemsPerRow();
+  window.addEventListener('resize', updateItemsPerRow);
+  if (route.query.type) {
+    loadList(route.query.type as string);
+  } else {
+    getRecommendList(getAdjustedLimit(ITEMS_PER_ROW.value)).then((res: { data: { result: any } }) => {
+      recommendList.value = res.data.result;
+    });
+  }
+});
+
+onUnmounted(() => {
+  window.removeEventListener('resize', updateItemsPerRow);
+});
 
 watch(
   () => route.query,
   async (newParams) => {
     if (newParams.type) {
-      recommendList.value = null;
+      recommendList.value = [];
       listTitle.value = newParams.type || '歌单列表';
       loadList(newParams.type as string);
     }
@@ -68,14 +140,14 @@ watch(
   <div class="list-page">
     <div class="recommend-title" :class="setAnimationClass('animate__bounceInLeft')">{{ listTitle }}</div>
     <!-- 歌单列表 -->
-    <n-scrollbar class="recommend" :size="100" @click="showMusic = false">
+    <n-scrollbar class="recommend" :size="100" @scroll="handleScroll">
       <div v-loading="loading" class="recommend-list">
         <div
           v-for="(item, index) in recommendList"
           :key="item.id"
           class="recommend-item"
           :class="setAnimationClass('animate__bounceIn')"
-          :style="setAnimationDelay(index, 30)"
+          :style="getItemAnimationDelay(index)"
           @click.stop="selectRecommendItem(item)"
         >
           <div class="recommend-item-img">
@@ -95,6 +167,12 @@ watch(
           <div class="recommend-item-title">{{ item.name }}</div>
         </div>
       </div>
+      <!-- 加载状态 -->
+      <div v-if="isLoadingMore" class="loading-more">
+        <n-spin size="small" />
+        <span class="ml-2">加载中...</span>
+      </div>
+      <div v-if="!hasMore && recommendList.length > 0" class="no-more">没有更多了</div>
     </n-scrollbar>
     <music-list
       v-model:show="showMusic"
@@ -108,28 +186,32 @@ watch(
 
 <style lang="scss" scoped>
 .list-page {
-  @apply relative h-full w-full px-4;
+  @apply relative h-full w-full;
 }
 
 .recommend {
-  @apply w-full h-full bg-none;
+  @apply w-full h-full bg-none px-4;
   &-title {
     @apply text-lg font-bold text-white pb-4;
   }
 
   &-list {
-    @apply grid gap-6 pb-28;
-    grid-template-columns: repeat(auto-fill, minmax(13%, 1fr));
+    @apply grid gap-x-8 gap-y-6 pb-28;
+    grid-template-columns: repeat(v-bind(ITEMS_PER_ROW), minmax(0, 1fr));
   }
   &-item {
+    @apply flex flex-col;
     &-img {
-      @apply rounded-xl overflow-hidden relative;
+      @apply rounded-xl overflow-hidden relative w-full;
+      &-img {
+        @apply block w-full h-full;
+      }
+      img {
+        @apply absolute top-0 left-0 w-full h-full object-cover rounded-xl;
+      }
       &:hover img {
         @apply hover:scale-110 transition-all duration-300 ease-in-out;
       }
-      &-img {
-        @apply h-full w-full rounded-xl overflow-hidden;
-      }
       .top {
         @apply absolute w-full h-full top-0 left-0 flex justify-center items-center transition-all duration-300 ease-in-out cursor-pointer;
         background-color: #00000088;
@@ -147,10 +229,7 @@ watch(
         }
 
         .play-count {
-          position: absolute;
-          top: 10px;
-          left: 10px;
-          font-size: 14px;
+          @apply absolute top-2 left-2 text-sm;
         }
       }
     }
@@ -160,9 +239,11 @@ watch(
   }
 }
 
-.mobile {
-  .recommend-list {
-    grid-template-columns: repeat(auto-fill, minmax(25%, 1fr));
-  }
+.loading-more {
+  @apply flex items-center justify-center py-4 text-sm text-gray-400;
+}
+
+.no-more {
+  @apply text-center py-4 text-sm text-gray-500;
 }
 </style>
diff --git a/src/views/mv/index.vue b/src/views/mv/index.vue
index ce4869f..9a0f2a6 100644
--- a/src/views/mv/index.vue
+++ b/src/views/mv/index.vue
@@ -10,7 +10,7 @@
           :key="item.id"
           class="mv-item"
           :class="setAnimationClass('animate__bounceIn')"
-          :style="setAnimationDelay(index, 10)"
+          :style="getItemAnimationDelay(index)"
         >
           <div class="mv-item-img" @click="handleShowMv(item, index)">
             <n-image
@@ -68,6 +68,11 @@ const offset = ref(0);
 const limit = ref(30);
 const hasMore = ref(true);
 
+const getItemAnimationDelay = (index: number) => {
+  const currentPageIndex = index % limit.value;
+  return setAnimationDelay(currentPageIndex, 30);
+};
+
 onMounted(async () => {
   await loadMvList();
 });