From 9254dd220852c54a37f206b24e144b124aa01d4f Mon Sep 17 00:00:00 2001
From: Vitalii <takur12345@gmail.com>
Date: Thu, 7 Sep 2023 17:14:25 +0300
Subject: [PATCH] web/satellite/vuetify-poc: enable object browser pagination

Enabled object browser pagination for vuetify app.
Also fixed some small bug when returning to first page.

Issue:
https://github.com/storj/storj/issues/5595

Change-Id: I8b5e90a4cd7d7a79a8beeb292b7374db3f93d700
---
 .../src/components/browser/FileBrowser.vue    |  2 +-
 .../src/store/modules/objectBrowserStore.ts   |  9 +--
 web/satellite/src/types/common.ts             |  4 +-
 .../src/components/BrowserTableComponent.vue  | 77 +++++++++++++++++--
 4 files changed, 79 insertions(+), 13 deletions(-)

diff --git a/web/satellite/src/components/browser/FileBrowser.vue b/web/satellite/src/components/browser/FileBrowser.vue
index aa2869ae2..a9a06a7de 100644
--- a/web/satellite/src/components/browser/FileBrowser.vue
+++ b/web/satellite/src/components/browser/FileBrowser.vue
@@ -458,7 +458,7 @@ function changePageAndLimit(page: number, limit: number): void {
 
     const tokenToBeFetched = obStore.state.continuationTokens.get(tokenKey);
     if (!tokenToBeFetched) {
-        obStore.listByToken(routePath.value, 1, tokenToBeFetched);
+        obStore.initList(routePath.value);
         return;
     }
 
diff --git a/web/satellite/src/store/modules/objectBrowserStore.ts b/web/satellite/src/store/modules/objectBrowserStore.ts
index c4df7b5fd..d3e6ec7cf 100644
--- a/web/satellite/src/store/modules/objectBrowserStore.ts
+++ b/web/satellite/src/store/modules/objectBrowserStore.ts
@@ -292,6 +292,8 @@ export const useObjectBrowserStore = defineStore('objectBrowser', () => {
                 const { Contents, CommonPrefixes } = response;
 
                 processFetchedObjects(path, Contents, CommonPrefixes);
+
+                state.activeObjectsRange = { start: 1, end: MAX_KEY_COUNT };
             }
 
             keyCount += response.KeyCount ?? 0;
@@ -305,7 +307,7 @@ export const useObjectBrowserStore = defineStore('objectBrowser', () => {
         state.totalObjectCount = keyCount;
     }
 
-    async function listByToken(path: string, key: number, continuationToken?: string): Promise<void> {
+    async function listByToken(path: string, key: number, continuationToken: string): Promise<void> {
         assertIsInitialized(state);
 
         const input: ListObjectsV2CommandInput = {
@@ -321,10 +323,7 @@ export const useObjectBrowserStore = defineStore('objectBrowser', () => {
 
         processFetchedObjects(path, Contents, CommonPrefixes);
 
-        state.activeObjectsRange = {
-            start: key === 1 ? key : key - MAX_KEY_COUNT,
-            end: key === 1 ? MAX_KEY_COUNT : key,
-        };
+        state.activeObjectsRange = { start: key - MAX_KEY_COUNT, end: key };
     }
 
     function processFetchedObjects(path: string, Contents: _Object[] | undefined, CommonPrefixes: CommonPrefix[] | undefined): void {
diff --git a/web/satellite/src/types/common.ts b/web/satellite/src/types/common.ts
index bc5728343..1f6a1cd79 100644
--- a/web/satellite/src/types/common.ts
+++ b/web/satellite/src/types/common.ts
@@ -43,14 +43,14 @@ export type UUID = string
 export type MemorySize = string
 export type Time = string
 
-export function tableSizeOptions(itemCount: number): {title: string, value: number}[] {
+export function tableSizeOptions(itemCount: number, isObjectBrowser = false): {title: string, value: number}[] {
     const opts = [
         { title: '10', value: 10 },
         { title: '25', value: 25 },
         { title: '50', value: 50 },
         { title: '100', value: 100 },
     ];
-    if (itemCount < 1000) {
+    if (itemCount < 1000 && !isObjectBrowser) {
         return [{ title: 'All', value: itemCount }, ...opts];
     }
     return opts;
diff --git a/web/satellite/vuetify-poc/src/components/BrowserTableComponent.vue b/web/satellite/vuetify-poc/src/components/BrowserTableComponent.vue
index 690747429..0a62a897c 100644
--- a/web/satellite/vuetify-poc/src/components/BrowserTableComponent.vue
+++ b/web/satellite/vuetify-poc/src/components/BrowserTableComponent.vue
@@ -30,7 +30,10 @@
             hover
             must-sort
             :loading="isFetching || loading"
-            :items-length="allFiles.length"
+            :items-length="isPaginationEnabled ? totalObjectCount : allFiles.length"
+            :items-per-page-options="isPaginationEnabled ? tableSizeOptions(totalObjectCount, true) : undefined"
+            @update:page="onPageChange"
+            @update:itemsPerPage="onLimitChange"
         >
             <template #item.name="{ item }: ItemSlotProps">
                 <v-btn
@@ -77,13 +80,20 @@ import {
 } from 'vuetify/components';
 import { VDataTableServer } from 'vuetify/labs/components';
 
-import { BrowserObject, useObjectBrowserStore } from '@/store/modules/objectBrowserStore';
+import {
+    BrowserObject,
+    MAX_KEY_COUNT,
+    ObjectBrowserCursor,
+    useObjectBrowserStore,
+} from '@/store/modules/objectBrowserStore';
 import { useProjectsStore } from '@/store/modules/projectsStore';
 import { useNotify } from '@/utils/hooks';
 import { SHORT_MONTHS_NAMES } from '@/utils/constants/date';
 import { Size } from '@/utils/bytesSize';
 import { AnalyticsErrorEventSource } from '@/utils/constants/analyticsEventNames';
 import { useBucketsStore } from '@/store/modules/bucketsStore';
+import { useConfigStore } from '@/store/modules/configStore';
+import { tableSizeOptions } from '@/types/common';
 
 import BrowserRowActions from '@poc/components/BrowserRowActions.vue';
 import FilePreviewDialog from '@poc/components/dialogs/FilePreviewDialog.vue';
@@ -131,6 +141,7 @@ const props = defineProps<{
     loading?: boolean;
 }>();
 
+const config = useConfigStore();
 const obStore = useObjectBrowserStore();
 const projectsStore = useProjectsStore();
 const bucketsStore = useBucketsStore();
@@ -180,12 +191,29 @@ const bucketName = computed<string>(() => bucketsStore.state.fileComponentBucket
  */
 const filePath = computed<string>(() => bucketsStore.state.fileComponentPath);
 
+/**
+ * Returns total object count from store.
+ */
+const isPaginationEnabled = computed<boolean>(() => config.state.config.objectBrowserPaginationEnabled);
+
+/**
+ * Returns total object count from store.
+ */
+const totalObjectCount = computed<number>(() => obStore.state.totalObjectCount);
+
+/**
+ * Returns table cursor from store.
+ */
+const cursor = computed<ObjectBrowserCursor>(() => obStore.state.cursor);
+
 /**
  * Returns every file under the current path.
  */
 const allFiles = computed<BrowserObjectWrapper[]>(() => {
     if (props.forceEmpty) return [];
-    return obStore.state.files.map<BrowserObjectWrapper>(file => {
+
+    const objects = isPaginationEnabled.value ? obStore.displayedObjects : obStore.state.files;
+    return objects.map<BrowserObjectWrapper>(file => {
         const lowerName = file.Key.toLowerCase();
         const dotIdx = lowerName.indexOf('.');
         const ext = dotIdx === -1 ? '' : file.Key.slice(dotIdx + 1);
@@ -243,11 +271,43 @@ const tableFiles = computed<BrowserObjectWrapper[]>(() => {
         });
     }
 
-    if (opts.itemsPerPage === -1) return files;
+    if (opts.itemsPerPage === -1 || isPaginationEnabled.value) return files;
 
     return files.slice((opts.page - 1) * opts.itemsPerPage, opts.page * opts.itemsPerPage);
 });
 
+/**
+ * Handles page change event.
+ */
+function onPageChange(page: number): void {
+    obStore.setCursor({ page, limit: options.value?.itemsPerPage ?? 10 });
+
+    const lastObjectOnPage = page * cursor.value.limit;
+    const activeRange = obStore.state.activeObjectsRange;
+
+    if (lastObjectOnPage > activeRange.start && lastObjectOnPage <= activeRange.end) {
+        return;
+    }
+
+    const path = filePath.value ? filePath.value + '/' : '';
+    const tokenKey = Math.ceil(lastObjectOnPage / MAX_KEY_COUNT) * MAX_KEY_COUNT;
+
+    const tokenToBeFetched = obStore.state.continuationTokens.get(tokenKey);
+    if (!tokenToBeFetched) {
+        obStore.initList(path);
+        return;
+    }
+
+    obStore.listByToken(path, tokenKey, tokenToBeFetched);
+}
+
+/**
+ * Handles items per page change event.
+ */
+function onLimitChange(newLimit: number): void {
+    obStore.setCursor({ page: options.value?.page ?? 1, limit: newLimit });
+}
+
 /**
  * Returns the string form of the file's last modified date.
  */
@@ -308,7 +368,14 @@ async function fetchFiles(): Promise<void> {
     isFetching.value = true;
 
     try {
-        await obStore.list(filePath.value ? filePath.value + '/' : '');
+        const path = filePath.value ? filePath.value + '/' : '';
+
+        if (isPaginationEnabled.value) {
+            await obStore.initList(path);
+        } else {
+            await obStore.list(path);
+        }
+
         selected.value = [];
     } catch (err) {
         err.message = `Error fetching files. ${err.message}`;