Add progress bar for Export All progress

src/App.scss

@@ -15,10 +15,6 @@
 h1 a { color: black; }
 h1 a:hover { color: black; text-decoration: none; }
 
-nav.paginator:nth-child(1) {
-  margin-top: -74px;
-}
-
 table {
   float: left;
 }
@@ -27,6 +23,28 @@ table {
   display: none;
 }
 
+#playlistsHeader {
+  display: flex;
+  flex-direction: row-reverse;
+
+  .progress {
+    flex-grow: 1;
+    margin: 20px 20px 20px 0;
+    height: 30px;
+
+    .progress-bar {
+      white-space: nowrap;
+      padding: 4px 10px;
+      text-align: left;
+
+      // Transitioning when resetting looks weird
+      &[aria-valuenow="1"] {
+        transition: none;
+      }
+    }
+  }
+}
+
 @keyframes spinner {
   to {transform: rotate(360deg);}
 }

src/components/PlaylistTable.jsx

@@ -1,6 +1,6 @@
 import React from "react"
 import $ from "jquery" // TODO: Remove jQuery dependency
-import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
+import { ProgressBar } from "react-bootstrap"
 
 import PlaylistRow from "./PlaylistRow"
 import Paginator from "./Paginator"
@@ -11,10 +11,17 @@ class PlaylistTable extends React.Component {
   state = {
     playlists: [],
     playlistCount: 0,
-    likedSongsLimit: 0,
-    likedSongsCount: 0,
+    likedSongs: {
+      limit: 0,
+      count: 0
+    },
     nextURL: null,
-    prevURL: null
+    prevURL: null,
+    progressBar: {
+      show: false,
+      label: "",
+      value: 0
+    }
   }
 
   loadPlaylists = (url) => {
@@ -64,8 +71,10 @@ class PlaylistTable extends React.Component {
 
         // FIXME: Handle unmounting
         this.setState({
-          likedSongsLimit: likedTracksResponse.limit,
-          likedSongsCount: likedTracksResponse.total
+          likedSongs: {
+            limit: likedTracksResponse.limit,
+            count: likedTracksResponse.total
+          }
         })
       }
 
@@ -82,19 +91,40 @@ class PlaylistTable extends React.Component {
     })
   }
 
-  exportPlaylists = () => {
-    PlaylistsExporter.export(this.props.accessToken, this.state.playlistCount, this.state.likedSongsLimit, this.state.likedSongsCount);
+  handleLoadedPlaylistsCountChanged = (count) => {
+    this.setState({
+      progressBar: {
+        show: true,
+        label: "Loading playlists...",
+        value: count
+      }
+    })
+  }
+
+  handleExportedPlaylistsCountChanged = (count) => {
+    this.setState({
+      progressBar: {
+        show: true,
+        label: count >= this.state.playlistCount ? "Done!" : "Exporting tracks...",
+        value: count
+      }
+    })
   }
 
   componentDidMount() {
     this.loadPlaylists(this.props.url);
   }
 
   render() {
-    if (this.state.playlists.length > 0) {
+    const progressBar = <ProgressBar striped active={this.state.progressBar.value < this.state.playlistCount} now={this.state.progressBar.value} max={this.state.playlistCount} label={this.state.progressBar.label} />
+
+    if (this.state.playlistCount > 0) {
       return (
         <div id="playlists">
-          <Paginator nextURL={this.state.nextURL} prevURL={this.state.prevURL} loadPlaylists={this.loadPlaylists}/>
+          <div id="playlistsHeader">
+            <Paginator nextURL={this.state.nextURL} prevURL={this.state.prevURL} loadPlaylists={this.loadPlaylists}/>
+            {this.state.progressBar.show && progressBar}
+          </div>
           <table className="table table-hover">
             <thead>
               <tr>
@@ -105,9 +135,13 @@ class PlaylistTable extends React.Component {
                 <th style={{width: "120px"}}>Public?</th>
                 <th style={{width: "120px"}}>Collaborative?</th>
                 <th style={{width: "100px"}} className="text-right">
-                  <button className="btn btn-default btn-xs" type="submit" onClick={this.exportPlaylists}>
-                    <span className="fa fa-file-archive"></span><FontAwesomeIcon icon={['far', 'file-archive']}/> Export All
-                  </button>
+                  <PlaylistsExporter
+                    accessToken={this.props.accessToken}
+                    onLoadedPlaylistsCountChanged={this.handleLoadedPlaylistsCountChanged}
+                    onExportedPlaylistsCountChanged={this.handleExportedPlaylistsCountChanged}
+                    playlistCount={this.state.playlistCount}
+                    likedSongs={this.state.likedSongs}
+                  />
                 </th>
               </tr>
             </thead>

src/components/PlaylistsExporter.jsx

@@ -1,13 +1,14 @@
+import React from "react"
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
 import { saveAs } from "file-saver"
 import JSZip from "jszip"
 
 import PlaylistExporter from "./PlaylistExporter"
 import { apiCall } from "helpers"
 
 // Handles exporting all playlist data as a zip file
-let PlaylistsExporter = {
-  export: async function(accessToken, playlistCount, likedSongsLimit, likedSongsCount) {
-
+class PlaylistsExporter extends React.Component {
+  async export(accessToken, playlistCount, likedSongsLimit, likedSongsCount) {
     var playlistFileNames = []
     var playlistCsvExports = []
 
@@ -24,6 +25,7 @@ let PlaylistsExporter = {
 
       let playlistPromises = requests.map((request, index) => {
         return apiCall(request, accessToken).then((response) => {
+          this.props.onLoadedPlaylistsCountChanged((index + 1) * limit)
           return response
         })
       })
@@ -45,6 +47,7 @@ let PlaylistsExporter = {
         return PlaylistExporter.csvData(accessToken, playlist).then((csvData) => {
           playlistFileNames.push(PlaylistExporter.fileName(playlist))
           playlistCsvExports.push(csvData)
+          this.props.onExportedPlaylistsCountChanged(index + 1)
         })
       })
 
@@ -61,6 +64,16 @@ let PlaylistsExporter = {
       })
     })
   }
+
+  exportPlaylists = () => {
+    this.export(this.props.accessToken, this.props.playlistCount, this.props.likedSongs.limit, this.props.likedSongs.count)
+  }
+
+  render() {
+    return <button className="btn btn-default btn-xs" type="submit" onClick={this.exportPlaylists}>
+      <span className="fa fa-file-archive"></span><FontAwesomeIcon icon={['far', 'file-archive']}/> Export All
+    </button>
+  }
 }
 
 export default PlaylistsExporter

src/components/__snapshots__/PlaylistTable.test.jsx.snap

@@ -4,44 +4,48 @@ exports[`playlist loading 1`] = `
 <div
   id="playlists"
 >
-  <nav
-    className="paginator text-right"
+  <div
+    id="playlistsHeader"
   >
-    <ul
-      className="pagination pagination-sm"
+    <nav
+      className="paginator text-right"
     >
-      <li
-        className="disabled"
+      <ul
+        className="pagination pagination-sm"
       >
-        <a
-          aria-label="Previous"
-          href="#"
-          onClick={[Function]}
+        <li
+          className="disabled"
         >
-          <span
-            aria-hidden="true"
+          <a
+            aria-label="Previous"
+            href="#"
+            onClick={[Function]}
           >
-            «
-          </span>
-        </a>
-      </li>
-      <li
-        className=""
-      >
-        <a
-          aria-label="Next"
-          href="#"
-          onClick={[Function]}
+            <span
+              aria-hidden="true"
+            >
+              «
+            </span>
+          </a>
+        </li>
+        <li
+          className=""
         >
-          <span
-            aria-hidden="true"
+          <a
+            aria-label="Next"
+            href="#"
+            onClick={[Function]}
           >
-            »
-          </span>
-        </a>
-      </li>
-    </ul>
-  </nav>
+            <span
+              aria-hidden="true"
+            >
+              »
+            </span>
+          </a>
+        </li>
+      </ul>
+    </nav>
+  </div>
   <table
     className="table table-hover"
   >