From 77139c7256a178d70ae622cb33aadf68fabf8d01 Mon Sep 17 00:00:00 2001
From: advplyr <advplyr@protonmail.com>
Date: Sat, 15 Oct 2022 17:17:40 -0500
Subject: [PATCH] Add:Support for shift selecting multiple library items #1020

---
 .../components/app/BookShelfCategorized.vue   | 70 +++++++++++++++++--
 client/components/app/BookShelfRow.vue        |  7 +-
 client/components/app/LazyBookshelf.vue       | 56 ++++++++++++++-
 client/components/cards/LazyBookCard.vue      |  4 +-
 client/components/widgets/EpisodeSlider.vue   |  7 +-
 client/components/widgets/ItemSlider.vue      |  7 +-
 client/mixins/bookshelfCardsHelpers.js        |  4 +-
 7 files changed, 129 insertions(+), 26 deletions(-)

diff --git a/client/components/app/BookShelfCategorized.vue b/client/components/app/BookShelfCategorized.vue
index 1141224a..6c8d4427 100644
--- a/client/components/app/BookShelfCategorized.vue
+++ b/client/components/app/BookShelfCategorized.vue
@@ -16,10 +16,10 @@
     <!-- Alternate plain view -->
     <div v-else-if="isAlternativeBookshelfView" class="w-full mb-24">
       <template v-for="(shelf, index) in shelves">
-        <widgets-item-slider v-if="shelf.type === 'book' || shelf.type === 'podcast'" :key="index + '.'" :items="shelf.entities" :continue-listening-shelf="shelf.id === 'continue-listening'" :height="232 * sizeMultiplier" class="bookshelf-row pl-8 my-6">
+        <widgets-item-slider v-if="shelf.type === 'book' || shelf.type === 'podcast'" :key="index + '.'" :items="shelf.entities" :continue-listening-shelf="shelf.id === 'continue-listening'" :height="232 * sizeMultiplier" class="bookshelf-row pl-8 my-6" @selectEntity="(payload) => selectEntity(payload, index)">
           <p class="font-semibold text-gray-100" :style="{ fontSize: sizeMultiplier + 'rem' }">{{ shelf.label }}</p>
         </widgets-item-slider>
-        <widgets-episode-slider v-else-if="shelf.type === 'episode'" :key="index + '.'" :items="shelf.entities" :continue-listening-shelf="shelf.id === 'continue-listening'" :height="232 * sizeMultiplier" class="bookshelf-row pl-8 my-6">
+        <widgets-episode-slider v-else-if="shelf.type === 'episode'" :key="index + '.'" :items="shelf.entities" :continue-listening-shelf="shelf.id === 'continue-listening'" :height="232 * sizeMultiplier" class="bookshelf-row pl-8 my-6" @selectEntity="(payload) => selectEntity(payload, index)">
           <p class="font-semibold text-gray-100" :style="{ fontSize: sizeMultiplier + 'rem' }">{{ shelf.label }}</p>
         </widgets-episode-slider>
         <widgets-series-slider v-else-if="shelf.type === 'series'" :key="index + '.'" :items="shelf.entities" :height="232 * sizeMultiplier" class="bookshelf-row pl-8 my-6">
@@ -33,7 +33,7 @@
     <!-- Regular bookshelf view -->
     <div v-else class="w-full">
       <template v-for="(shelf, index) in shelves">
-        <app-book-shelf-row :key="index" :index="index" :shelf="shelf" :size-multiplier="sizeMultiplier" :book-cover-width="bookCoverWidth" :book-cover-aspect-ratio="coverAspectRatio" :continue-listening-shelf="shelf.id === 'continue-listening'" />
+        <app-book-shelf-row :key="index" :index="index" :shelf="shelf" :size-multiplier="sizeMultiplier" :book-cover-width="bookCoverWidth" :book-cover-aspect-ratio="coverAspectRatio" :continue-listening-shelf="shelf.id === 'continue-listening'" @selectEntity="(payload) => selectEntity(payload, index)" />
       </template>
     </div>
   </div>
@@ -54,7 +54,8 @@ export default {
       keywordFilterTimeout: null,
       scannerParseSubtitle: false,
       wrapperClientWidth: 0,
-      shelves: []
+      shelves: [],
+      lastItemIndexSelected: -1
     }
   },
   computed: {
@@ -87,9 +88,64 @@ export default {
     sizeMultiplier() {
       var baseSize = this.isCoverSquareAspectRatio ? 192 : 120
       return this.bookCoverWidth / baseSize
+    },
+    selectedLibraryItems() {
+      return this.$store.state.selectedLibraryItems || []
     }
   },
   methods: {
+    selectEntity({ entity, shiftKey }, shelfIndex) {
+      const shelf = this.shelves[shelfIndex]
+      const entityShelfIndex = shelf.entities.findIndex((ent) => ent.id === entity.id)
+      const indexOf = shelf.shelfStartIndex + entityShelfIndex
+
+      const lastLastItemIndexSelected = this.lastItemIndexSelected
+      if (!this.selectedLibraryItems.includes(entity.id)) {
+        this.lastItemIndexSelected = indexOf
+      } else {
+        this.lastItemIndexSelected = -1
+      }
+
+      if (shiftKey && lastLastItemIndexSelected >= 0) {
+        var loopStart = indexOf
+        var loopEnd = lastLastItemIndexSelected
+        if (indexOf > lastLastItemIndexSelected) {
+          loopStart = lastLastItemIndexSelected
+          loopEnd = indexOf
+        }
+
+        const flattenedEntitiesArray = []
+        this.shelves.map((s) => flattenedEntitiesArray.push(...s.entities))
+
+        var isSelecting = false
+        // If any items in this range is not selected then select all otherwise unselect all
+        for (let i = loopStart; i <= loopEnd; i++) {
+          const thisEntity = flattenedEntitiesArray[i]
+          if (thisEntity) {
+            if (!this.selectedLibraryItems.includes(thisEntity.id)) {
+              isSelecting = true
+              break
+            }
+          }
+        }
+        if (isSelecting) this.lastItemIndexSelected = indexOf
+
+        for (let i = loopStart; i <= loopEnd; i++) {
+          const thisEntity = flattenedEntitiesArray[i]
+          if (thisEntity) {
+            this.$store.commit('setLibraryItemSelected', { libraryItemId: thisEntity.id, selected: isSelecting })
+          } else {
+            console.error('Invalid entity index', i)
+          }
+        }
+      } else {
+        this.$store.commit('toggleLibraryItemSelected', entity.id)
+      }
+
+      this.$nextTick(() => {
+        this.$eventBus.$emit('item-selected', entity)
+      })
+    },
     async init() {
       this.wrapperClientWidth = this.$refs.wrapper ? this.$refs.wrapper.clientWidth : 0
 
@@ -110,6 +166,12 @@ export default {
           console.error('Failed to fetch categories', error)
           return []
         })
+
+      let totalEntityCount = 0
+      for (const shelf of categories) {
+        shelf.shelfStartIndex = totalEntityCount
+        totalEntityCount += shelf.entities.length
+      }
       this.shelves = categories
     },
     async setShelvesFromSearch() {
diff --git a/client/components/app/BookShelfRow.vue b/client/components/app/BookShelfRow.vue
index 0c41efd7..8a1a0166 100644
--- a/client/components/app/BookShelfRow.vue
+++ b/client/components/app/BookShelfRow.vue
@@ -138,11 +138,8 @@ export default {
         })
       }
     },
-    selectItem(libraryItem) {
-      this.$store.commit('toggleLibraryItemSelected', libraryItem.id)
-      this.$nextTick(() => {
-        this.$eventBus.$emit('item-selected', libraryItem)
-      })
+    selectItem(payload) {
+      this.$emit('selectEntity', payload)
     },
     itemSelectedEvt() {
       this.updateSelectionMode(this.isSelectionMode)
diff --git a/client/components/app/LazyBookshelf.vue b/client/components/app/LazyBookshelf.vue
index 38412364..13ffe0ef 100644
--- a/client/components/app/LazyBookshelf.vue
+++ b/client/components/app/LazyBookshelf.vue
@@ -61,7 +61,8 @@ export default {
       keywordFilter: null,
       currScrollTop: 0,
       resizeTimeout: null,
-      mountWindowWidth: 0
+      mountWindowWidth: 0,
+      lastItemIndexSelected: -1
     }
   },
   watch: {
@@ -212,9 +213,55 @@ export default {
       this.updateBookSelectionMode(false)
       this.isSelectionMode = false
     },
-    selectEntity(entity) {
+    selectEntity(entity, shiftKey) {
       if (this.entityName === 'books' || this.entityName === 'series-books') {
-        this.$store.commit('toggleLibraryItemSelected', entity.id)
+        var indexOf = this.entities.findIndex((ent) => ent && ent.id === entity.id)
+        const lastLastItemIndexSelected = this.lastItemIndexSelected
+        if (!this.selectedLibraryItems.includes(entity.id)) {
+          this.lastItemIndexSelected = indexOf
+        } else {
+          this.lastItemIndexSelected = -1
+        }
+
+        if (shiftKey && lastLastItemIndexSelected >= 0) {
+          var loopStart = indexOf
+          var loopEnd = lastLastItemIndexSelected
+          if (indexOf > lastLastItemIndexSelected) {
+            loopStart = lastLastItemIndexSelected
+            loopEnd = indexOf
+          }
+
+          var isSelecting = false
+          // If any items in this range is not selected then select all otherwise unselect all
+          for (let i = loopStart; i <= loopEnd; i++) {
+            const thisEntity = this.entities[i]
+            if (thisEntity && !thisEntity.collapsedSeries) {
+              if (!this.selectedLibraryItems.includes(thisEntity.id)) {
+                isSelecting = true
+                break
+              }
+            }
+          }
+          if (isSelecting) this.lastItemIndexSelected = indexOf
+
+          for (let i = loopStart; i <= loopEnd; i++) {
+            const thisEntity = this.entities[i]
+            if (thisEntity.collapsedSeries) {
+              console.warn('Ignoring collapsed series')
+              continue
+            }
+
+            const entityComponentRef = this.entityComponentRefs[i]
+            if (thisEntity && entityComponentRef) {
+              entityComponentRef.selected = isSelecting
+              this.$store.commit('setLibraryItemSelected', { libraryItemId: thisEntity.id, selected: isSelecting })
+            } else {
+              console.error('Invalid entity index', i)
+            }
+          }
+        } else {
+          this.$store.commit('toggleLibraryItemSelected', entity.id)
+        }
 
         var newIsSelectionMode = !!this.selectedLibraryItems.length
         if (this.isSelectionMode !== newIsSelectionMode) {
@@ -229,6 +276,9 @@ export default {
           this.entityComponentRefs[key].setSelectionMode(isSelectionMode)
         }
       }
+      if (!isSelectionMode) {
+        this.lastItemIndexSelected = -1
+      }
     },
     async fetchEntites(page = 0) {
       var startIndex = page * this.booksPerFetch
diff --git a/client/components/cards/LazyBookCard.vue b/client/components/cards/LazyBookCard.vue
index f14e166c..da14c6a0 100644
--- a/client/components/cards/LazyBookCard.vue
+++ b/client/components/cards/LazyBookCard.vue
@@ -719,10 +719,10 @@ export default {
       console.log('Got library itemn', libraryItem)
       this.store.commit('showEReader', libraryItem)
     },
-    selectBtnClick() {
+    selectBtnClick(evt) {
       if (this.processingBatch) return
       this.selected = !this.selected
-      this.$emit('select', this.libraryItem)
+      this.$emit('select', { entity: this.libraryItem, shiftKey: evt.shiftKey })
     },
     async play() {
       var eventBus = this.$eventBus || this.$nuxt.$eventBus
diff --git a/client/components/widgets/EpisodeSlider.vue b/client/components/widgets/EpisodeSlider.vue
index dae87a15..cc876119 100644
--- a/client/components/widgets/EpisodeSlider.vue
+++ b/client/components/widgets/EpisodeSlider.vue
@@ -94,11 +94,8 @@ export default {
       this.$store.commit('setBookshelfBookIds', itemIds)
       this.$store.commit('showEditModal', libraryItem)
     },
-    selectItem(libraryItem) {
-      this.$store.commit('toggleLibraryItemSelected', libraryItem.id)
-      this.$nextTick(() => {
-        this.$eventBus.$emit('item-selected', libraryItem)
-      })
+    selectItem(payload) {
+      this.$emit('selectEntity', payload)
     },
     itemSelectedEvt() {
       this.updateSelectionMode(this.isSelectionMode)
diff --git a/client/components/widgets/ItemSlider.vue b/client/components/widgets/ItemSlider.vue
index fea2d06d..7a0bd352 100644
--- a/client/components/widgets/ItemSlider.vue
+++ b/client/components/widgets/ItemSlider.vue
@@ -74,11 +74,8 @@ export default {
       this.$store.commit('setBookshelfBookIds', itemIds)
       this.$store.commit('showEditModal', libraryItem)
     },
-    selectItem(libraryItem) {
-      this.$store.commit('toggleLibraryItemSelected', libraryItem.id)
-      this.$nextTick(() => {
-        this.$eventBus.$emit('item-selected', libraryItem)
-      })
+    selectItem(payload) {
+      this.$emit('selectEntity', payload)
     },
     itemSelectedEvt() {
       this.updateSelectionMode(this.isSelectionMode)
diff --git a/client/mixins/bookshelfCardsHelpers.js b/client/mixins/bookshelfCardsHelpers.js
index 7d4cd65c..574dee59 100644
--- a/client/mixins/bookshelfCardsHelpers.js
+++ b/client/mixins/bookshelfCardsHelpers.js
@@ -68,8 +68,8 @@ export default {
           this.$on('edit', (entity) => {
             if (_this.editEntity) _this.editEntity(entity)
           })
-          this.$on('select', (entity) => {
-            if (_this.selectEntity) _this.selectEntity(entity)
+          this.$on('select', ({ entity, shiftKey }) => {
+            if (_this.selectEntity) _this.selectEntity(entity, shiftKey)
           })
         }
       })