From ef7e6730890db4467c3812a0a0572b775a4f31ce Mon Sep 17 00:00:00 2001
From: "Brian C. Arnold" <connect@brian-arnold.dev>
Date: Fri, 25 Nov 2022 16:55:30 -0500
Subject: [PATCH] feat(playlist) Got playlists working for the most part. (the
 skeleton display isn't quite right, though.)

---
 frontend/components/Item/CollectionTabs.vue |   7 +-
 frontend/components/Item/PlaylistItems.vue  | 183 ++++++++++++++++++++
 frontend/pages/item/_itemId/index.vue       |   8 +-
 frontend/store/items.ts                     | 135 ++++++++++++++-
 4 files changed, 323 insertions(+), 10 deletions(-)
 create mode 100644 frontend/components/Item/PlaylistItems.vue

diff --git a/frontend/components/Item/CollectionTabs.vue b/frontend/components/Item/CollectionTabs.vue
index 80f07dce5c9..28b41589341 100644
--- a/frontend/components/Item/CollectionTabs.vue
+++ b/frontend/components/Item/CollectionTabs.vue
@@ -42,8 +42,11 @@ export default Vue.extend({
   computed: {
     ...mapStores(itemsStore),
     children(): Record<string, BaseItemDto[]> | undefined {
-      if (this.items.getChildrenOfParent(this.item.Id)?.length) {
-        return groupBy(this.items.getChildrenOfParent(this.item.Id), 'Type');
+      if (this.items.getChildrenOfParentCollection(this.item.Id)?.length) {
+        return groupBy(
+          this.items.getChildrenOfParentCollection(this.item.Id),
+          'Type'
+        );
       }
     }
   },
diff --git a/frontend/components/Item/PlaylistItems.vue b/frontend/components/Item/PlaylistItems.vue
new file mode 100644
index 00000000000..ccbb7954cdb
--- /dev/null
+++ b/frontend/components/Item/PlaylistItems.vue
@@ -0,0 +1,183 @@
+<template>
+  <div>
+    <h1 v-if="!children && !loading" class="text-h5 text-center">
+      {{ $t('collectionEmpty') }}
+    </h1>
+    <skeleton-item-grid v-if="loading" :view-type="''" />
+
+    <v-list v-if="!!children" color="transparent" two-line>
+      <v-list-item-group class="list-group">
+        <draggable
+          class="list-draggable"
+          v-bind="dragOptions"
+          v-if="children.length > 0"
+          v-model="children"
+          :move="checkMove"
+        >
+          <v-hover
+            v-for="(item, index) in children"
+            :key="`${item.Id}-${index}`"
+            v-slot="{ hover }"
+          >
+            <v-list-item ripple @click="playQueueFrom(index)">
+              <v-list-item-action
+                v-if="!hover"
+                class="list-group-item d-flex justify-center d-flex transition"
+                :class="{ 'primary--text font-weight-bold': isPlaying(item) }"
+              >
+                {{ index + 1 }}
+              </v-list-item-action>
+              <v-list-item-action v-else class="justify-center d-flex">
+                <v-icon>mdi-drag-horizontal</v-icon>
+              </v-list-item-action>
+              <v-list-item-avatar tile class="list-group-item">
+                <blurhash-image :item="item" />
+              </v-list-item-avatar>
+              <v-list-item-content>
+                <v-list-item-title
+                  class="text-truncate ml-2 list-group-item transition"
+                  :class="{
+                    'primary--text font-weight-bold': isPlaying(item)
+                  }"
+                >
+                  {{ item.Name }}
+                </v-list-item-title>
+                <v-list-item-subtitle
+                  v-if="getArtists(item)"
+                  class="ml-2 list-group-item transition"
+                  :class="{
+                    'primary--text font-weight-bold': isPlaying(item)
+                  }"
+                >
+                  {{ getArtists(item) }}
+                </v-list-item-subtitle>
+              </v-list-item-content>
+
+              <v-list-item-action>
+                <like-button :item="item" />
+              </v-list-item-action>
+              <v-list-item-action class="mr-2">
+                <item-menu :item="item" queue />
+              </v-list-item-action>
+            </v-list-item>
+          </v-hover>
+        </draggable>
+        <div
+          v-for="index in skeletonLength"
+          v-else
+          :key="index"
+          class="d-flex align-center mt-5 mb-5"
+        >
+          <v-skeleton-loader type="avatar" class="ml-3 mr-3" />
+          <v-skeleton-loader type="sentences" width="10em" class="pr-5" />
+        </div>
+      </v-list-item-group>
+    </v-list>
+  </div>
+</template>
+
+<script lang="ts">
+import { BaseItemDto } from '@jellyfin/client-axios';
+import Vue from 'vue';
+import { mapStores } from 'pinia';
+import { itemsStore, playbackManagerStore } from '~/store';
+
+export default Vue.extend({
+  props: {
+    item: {
+      type: Object as () => BaseItemDto,
+      required: true
+    }
+  },
+  methods: {
+    checkMove(evt: any) {
+      console.log(evt.draggedContext);
+      this.newIndex = evt.draggedContext.futureIndex;
+      this.oldIndex = evt.draggedContext.index;
+    },
+    getArtists(item: BaseItemDto): string | null {
+      if (item.Artists) {
+        return item.Artists.join(', ');
+      } else {
+        return null;
+      }
+    },
+    isPlaying(item: BaseItemDto): boolean {
+      if (this.playbackManager.getCurrentItem == undefined) {
+        return false;
+      }
+      return item.Id == (this.playbackManager.getCurrentItem as BaseItemDto).Id;
+    },
+    playQueueFrom(playFromIndex: number): void {
+      this.playbackManager
+        .play({
+          item: this.item,
+          startFromIndex: playFromIndex,
+          initiator: this.item
+        })
+        .then(() => this.items.fetchAndAddPlaylist(this.item.Id as string));
+    }
+  },
+  data() {
+    return {
+      currentTab: 0,
+      loading: false,
+      newIndex: null as number | null,
+      oldIndex: null as number | null,
+      dragOptions: {
+        animation: 500,
+        delay: 0,
+        group: false,
+        dragoverBubble: true,
+        ghostClass: 'ghost'
+      }
+    };
+  },
+  computed: {
+    ...mapStores(itemsStore, playbackManagerStore),
+    children: {
+      get(): BaseItemDto[] {
+        return this.items.getChildrenOfParentPlaylist(
+          this.item.Id
+        ) as BaseItemDto[];
+      },
+      set(newValue: BaseItemDto[]): void {
+        if (this.oldIndex != null && this.newIndex != null) {
+          this.loading = true;
+          console.log(this.item);
+          console.log(this.children[this.oldIndex]);
+          console.log(this.newIndex);
+          this.items
+            .movePlaylistItem(
+              this.item,
+              this.children[this.oldIndex],
+              this.newIndex
+            )
+            .then(() => (this.loading = false));
+        }
+        // this.items.addCollection(this.item, newValue);
+        // setTimeout(() => (this.loading = false), 1000);
+      }
+    }
+  },
+  watch: {
+    item: {
+      immediate: true,
+      async handler(item: BaseItemDto): Promise<void> {
+        if (!this.children) {
+          this.loading = true;
+          await this.items.fetchAndAddPlaylist(item.Id as string);
+          this.loading = false;
+        }
+      }
+    }
+  }
+});
+</script>
+
+<style lang="scss" scoped>
+.list-draggable {
+  user-select: none;
+  min-height: 20px;
+}
+</style>
diff --git a/frontend/pages/item/_itemId/index.vue b/frontend/pages/item/_itemId/index.vue
index c716ebf148c..4ad0a45c4ed 100644
--- a/frontend/pages/item/_itemId/index.vue
+++ b/frontend/pages/item/_itemId/index.vue
@@ -241,12 +241,12 @@
         </v-col>
       </v-row>
       <v-row>
-        <v-col
-          v-if="item.Type === 'BoxSet' || item.Type === 'Playlist'"
-          cols="12"
-        >
+        <v-col v-if="item.Type === 'BoxSet'" cols="12">
           <collection-tabs :item="item" />
         </v-col>
+        <v-col v-if="item.Type === 'Playlist'" cols="12">
+          <playlist-items :item="item" />
+        </v-col>
         <v-col cols="12">
           <related-items :id="$route.params.itemId" :item="item" />
         </v-col>
diff --git a/frontend/store/items.ts b/frontend/store/items.ts
index 31a47f54244..4c414322147 100644
--- a/frontend/store/items.ts
+++ b/frontend/store/items.ts
@@ -1,18 +1,20 @@
 import Vue from 'vue';
-import { BaseItemDto, ItemFields } from '@jellyfin/client-axios';
+import { BaseItemDto, ImageType, ItemFields } from '@jellyfin/client-axios';
 import { defineStore } from 'pinia';
 import { authStore } from '.';
 
 export interface ItemsState {
   byId: Record<string, BaseItemDto>;
   collectionById: Record<string, string[]>;
+  playlistById: Record<string, string[]>;
 }
 
 export const itemsStore = defineStore('items', {
   state: () => {
     return {
       byId: {},
-      collectionById: {}
+      collectionById: {},
+      playlistById: {}
     } as ItemsState;
   },
   actions: {
@@ -69,6 +71,113 @@ export const itemsStore = defineStore('items', {
      * @param children
      * @returns - The children of the item
      */
+    async movePlaylistItem(
+      parent: BaseItemDto,
+      localChild: BaseItemDto,
+      index: number
+    ): Promise<BaseItemDto[]> {
+      const auth = authStore();
+
+      // You're probably asking "... but why?"
+
+      // Because when the Playback manager is playing these tracks,
+      // it seems to erase the PlaylistItemId from each of the items.
+      // So... I just get a new bunch of them to move things.
+
+      // Probably a better way to do it, but...
+      // ... I didn't feel like figuring that out right now.
+
+      // If you try to fix this, make sure that you can click "Play"
+      // on the playlist, then move tracks.
+
+      const children = await this.$nuxt.$api.playlists.getPlaylistItems({
+        userId: auth.currentUserId,
+        playlistId: parent.Id as string,
+        fields: [ItemFields.PrimaryImageAspectRatio],
+        enableImageTypes: [
+          ImageType.Primary,
+          ImageType.Backdrop,
+          ImageType.Banner,
+          ImageType.Thumb
+        ]
+      });
+      const child = children.data.Items?.find(
+        (i) => i.Id == localChild.Id
+      ) as BaseItemDto;
+      await this.$nuxt.$api.playlists.moveItem({
+        playlistId: parent.Id as string,
+        itemId: child.PlaylistItemId as string,
+        newIndex: index
+      });
+      return (await this.fetchAndAddPlaylist(
+        parent.Id as string
+      )) as BaseItemDto[];
+    },
+    addPlaylist(parent: BaseItemDto, children: BaseItemDto[]): BaseItemDto[] {
+      if (!parent.Id) {
+        throw new Error("Parent item doesn't have an Id");
+      }
+
+      const childIds = [];
+
+      for (const child of children) {
+        if (child.Id) {
+          if (!this.getItemById(child.Id)) {
+            this.add(child);
+          }
+
+          childIds.push(child.Id);
+        }
+      }
+
+      Vue.set(this.playlistById, parent.Id, childIds);
+
+      return this.getChildrenOfParentPlaylist(parent.Id) as BaseItemDto[];
+    },
+    async fetchAndAddPlaylist(
+      parentId: string | undefined
+    ): Promise<BaseItemDto[]> {
+      const auth = authStore();
+
+      if (parentId && !this.getItemById(parentId)) {
+        const parentItem = (
+          await this.$nuxt.$api.items.getItems({
+            userId: auth.currentUserId,
+            ids: [parentId],
+            fields: Object.values(ItemFields)
+          })
+        ).data;
+
+        if (!parentItem.Items?.[0]) {
+          throw new Error("This parent doesn't exist");
+        }
+
+        this.add(parentItem.Items[0]);
+      }
+
+      const childItems = (
+        await this.$nuxt.$api.playlists.getPlaylistItems({
+          userId: auth.currentUserId,
+          playlistId: parentId as string,
+          fields: [ItemFields.PrimaryImageAspectRatio],
+          enableImageTypes: [
+            ImageType.Primary,
+            ImageType.Backdrop,
+            ImageType.Banner,
+            ImageType.Thumb
+          ]
+        })
+      ).data;
+
+      if (childItems.Items) {
+        const parent = this.getItemById(parentId);
+
+        return this.addPlaylist(parent as BaseItemDto, childItems.Items);
+      } else {
+        // I think this just means it's an empty playlist...?
+        return this.addPlaylist(parent as BaseItemDto, []);
+      }
+    },
     addCollection(parent: BaseItemDto, children: BaseItemDto[]): BaseItemDto[] {
       if (!parent.Id) {
         throw new Error("Parent item doesn't have an Id");
@@ -88,7 +197,7 @@ export const itemsStore = defineStore('items', {
 
       Vue.set(this.collectionById, parent.Id, childIds);
 
-      return this.getChildrenOfParent(parent.Id) as BaseItemDto[];
+      return this.getChildrenOfParentCollection(parent.Id) as BaseItemDto[];
     },
     /**
      * Fetches a parent and its children and adds thecollection to the store
@@ -156,7 +265,7 @@ export const itemsStore = defineStore('items', {
         return res;
       };
     },
-    getChildrenOfParent: (state) => {
+    getChildrenOfParentCollection: (state) => {
       return (id: string | undefined): BaseItemDto[] | undefined => {
         if (!id) {
           throw new Error('No itemId provided');
@@ -165,6 +274,24 @@ export const itemsStore = defineStore('items', {
         const res = [] as BaseItemDto[];
         const ids = state.collectionById[id];
 
+        if (ids?.length) {
+          for (const _id of ids) {
+            res.push(state.byId[_id]);
+          }
+
+          return res;
+        }
+      };
+    },
+    getChildrenOfParentPlaylist: (state) => {
+      return (id: string | undefined): BaseItemDto[] | undefined => {
+        if (!id) {
+          throw new Error('No itemId provided');
+        }
+
+        const res = [] as BaseItemDto[];
+        const ids = state.playlistById[id];
+
         if (ids?.length) {
           for (const _id of ids) {
             res.push(state.byId[_id]);