add support for pdf previews with pdf.js

components/Breadcrumb.tsx

@@ -8,12 +8,12 @@ const Breadcrumb: FunctionComponent<{ query?: ParsedUrlQuery }> = ({ query }) =>
     const { path } = query
     if (Array.isArray(path)) {
       return (
-        <div className="pb-4 text-sm text-gray-600 flex flex-wrap">
-          <div className="p-1 hover:text-black transition-all duration-75">
+        <div className="pb-4 text-sm text-gray-600 flex overflow-x-scroll">
+          <div className="p-1 hover:text-black transition-all duration-75 flex-shrink-0">
             <Link href="/">🚩 Home</Link>
           </div>
           {path.map((q: string, i: number) => (
-            <div key={i} className="flex items-center">
+            <div key={i} className="flex items-center flex-shrink-0">
               <div>/</div>
               <div className="p-1 hover:text-black transition-all duration-75">
                 <Link href={`/${path.slice(0, i + 1).join('/')}`}>{q}</Link>

components/FileListing.tsx

@@ -2,20 +2,23 @@ import axios from 'axios'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 
 import { ParsedUrlQuery } from 'querystring'
-import { FunctionComponent, useEffect, useState } from 'react'
+import { FunctionComponent, useState } from 'react'
 import { ImageDecorator } from 'react-viewer/lib/ViewerProps'
 
 import useSWR from 'swr'
 import { useRouter } from 'next/router'
 import dynamic from 'next/dynamic'
 
+import Loading from './Loading'
+
 import { getExtension, getFileIcon, hasKey } from '../utils/getFileIcon'
 import { extensions, preview } from '../utils/getPreviewType'
 import { VideoPreview } from './previews/VideoPreview'
 import { AudioPreview } from './previews/AudioPreview'
 
-// View images as gallery
+// Disabling SSR for some previews (image gallery view, and PDF view)
 const ReactViewer = dynamic(() => import('react-viewer'), { ssr: false })
+const PDFPreview = dynamic(() => import('./previews/PDFPreview'), { ssr: false })
 
 /**
  * Convert raw bits file/folder size into a human readable string
@@ -62,13 +65,13 @@ const FileListItem: FunctionComponent<{
         </div>
         <div className="truncate">{c.name}</div>
       </div>
-      <div className="hidden md:visible font-mono text-sm col-span-2 text-gray-700">
+      <div className="invisible md:visible font-mono text-sm col-span-2 text-gray-700">
         {new Date(c.lastModifiedDateTime).toLocaleString(undefined, {
           dateStyle: 'short',
           timeStyle: 'short',
         })}
       </div>
-      <div className="hidden md:visible font-mono text-sm text-gray-700">{humanFileSize(c.size)}</div>
+      <div className="invisible md:visible font-mono text-sm text-gray-700">{humanFileSize(c.size)}</div>
     </div>
   )
 }
@@ -89,21 +92,8 @@ const FileListing: FunctionComponent<{ query?: ParsedUrlQuery }> = ({ query }) =
   if (error) return <div>Failed to load</div>
   if (!data) {
     return (
-      <div className="flex items-center justify-center bg-white shadow rounded py-32 space-x-1">
-        <svg
-          className="animate-spin -ml-1 mr-3 h-5 w-5"
-          xmlns="http://www.w3.org/2000/svg"
-          fill="none"
-          viewBox="0 0 24 24"
-        >
-          <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-          <path
-            className="opacity-75"
-            fill="currentColor"
-            d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
-          ></path>
-        </svg>
-        <div>Loading</div>
+      <div className="shadow bg-white rounded p-3">
+        <Loading loadingText="Loading ..." />
       </div>
     )
   }
@@ -140,8 +130,8 @@ const FileListing: FunctionComponent<{ query?: ParsedUrlQuery }> = ({ query }) =
       <div className="bg-white shadow rounded">
         <div className="p-3 grid grid-cols-10 items-center space-x-2 border-b border-gray-200">
           <div className="col-span-10 md:col-span-7 font-bold">Name</div>
-          <div className="hidden md:visible font-bold col-span-2">Last Modified</div>
-          <div className="hidden md:visible font-bold">Size</div>
+          <div className="invisible md:visible font-bold col-span-2">Last Modified</div>
+          <div className="invisible md:visible font-bold">Size</div>
         </div>
 
         {imagesInFolder.length !== 0 && (
@@ -211,7 +201,7 @@ const FileListing: FunctionComponent<{ query?: ParsedUrlQuery }> = ({ query }) =
           return <AudioPreview file={resp} />
 
         case preview.pdf:
-          return <div>pdf</div>
+          return <PDFPreview file={resp} />
 
         default:
           return <div className="bg-white shadow rounded">{fileName}</div>

components/Loading.tsx

@@ -0,0 +1,24 @@
+import { FunctionComponent } from 'react'
+
+const Loading: FunctionComponent<{ loadingText: string }> = ({ loadingText }) => {
+  return (
+    <div className="flex items-center justify-center rounded py-32 space-x-1">
+      <svg
+        className="animate-spin -ml-1 mr-3 h-5 w-5"
+        xmlns="http://www.w3.org/2000/svg"
+        fill="none"
+        viewBox="0 0 24 24"
+      >
+        <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
+        <path
+          className="opacity-75"
+          fill="currentColor"
+          d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+        ></path>
+      </svg>
+      <div>{loadingText}</div>
+    </div>
+  )
+}
+
+export default Loading

components/Navbar.tsx

@@ -4,7 +4,7 @@ import siteConfig from '../config/site.json'
 
 const Navbar = () => {
   return (
-    <div className="text-left bg-white p-3 sticky top-0 bg-opacity-80 backdrop-blur-md shadow-sm">
+    <div className="text-left bg-white p-3 sticky top-0 bg-opacity-80 backdrop-blur-md shadow-sm z-20">
       <div className="max-w-4xl w-full mx-auto flex items-center justify-between">
         <h1 className="font-bold text-xl">{siteConfig.title}</h1>
         <a href="https://github.com/spencerwooo/onedrive-vercel-index" target="_blank" rel="noopener noreferrer">

components/previews/AudioPreview.tsx

@@ -5,13 +5,13 @@ import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 export const AudioPreview: FunctionComponent<{ file: any }> = ({ file }) => {
   return (
     <div className="bg-white rounded shadow p-3 w-full">
-      <div className="flex space-x-4">
-        <div className="flex items-center justify-center p-10 bg-gray-100 rounded">
-          <FontAwesomeIcon className="" icon="music" size="lg" />
+      <div className="flex flex-col space-y-4 md:flex-row md:space-x-4">
+        <div className="flex items-center justify-center bg-gray-100 rounded p-28 md:p-14">
+          <FontAwesomeIcon icon="music" size="lg" />
         </div>
         <div className="flex flex-col w-full space-y-2">
           <div>{file.name}</div>
-          <div className="text-gray-500 text-sm">
+          <div className="text-gray-500 text-sm pb-4">
             Last modified:{' '}
             {new Date(file.lastModifiedDateTime).toLocaleString(undefined, {
               dateStyle: 'short',

components/previews/PDFPreview.tsx

@@ -0,0 +1,70 @@
+import { FunctionComponent, useState } from 'react'
+import { Document, Page, pdfjs } from 'react-pdf'
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
+
+import Loading from '../Loading'
+
+pdfjs.GlobalWorkerOptions.workerSrc = `//cdnjs.cloudflare.com/ajax/libs/pdf.js/${pdfjs.version}/pdf.worker.min.js`
+
+const PDFPreview: FunctionComponent<{ file: any }> = ({ file }) => {
+  const [pageNumber, setPageNumber] = useState(1)
+  const [totalPages, setTotalPages] = useState(0)
+  const [loadingText, setLoadingText] = useState('Loading PDF ...')
+
+  const onDocumentLoadSuccess = (pdf: any) => {
+    setTotalPages(pdf.numPages)
+  }
+
+  return (
+    <div className="bg-white rounded shadow md:p-3 w-full overflow-scroll" style={{ maxHeight: '90vh' }}>
+      <div className="w-full mx-auto border-2 md:shadow overflow-scroll" style={{ maxHeight: '60vh' }}>
+        <Document
+          file={file['@microsoft.graph.downloadUrl']}
+          onLoadSuccess={onDocumentLoadSuccess}
+          loading={<Loading loadingText={loadingText} />}
+          onLoadProgress={({ loaded, total }) => {
+            setLoadingText(`Loading PDF ${Math.round((loaded / total) * 100)}%`)
+          }}
+        >
+          <Page pageNumber={pageNumber} />
+        </Document>
+      </div>
+      <div className="flex space-x-2 my-4 md:mb-0 w-full items-center justify-center">
+        <button
+          className="px-3 py-1 bg-red-500 text-white rounded cursor-pointer focus:ring-2 focus:ring-red-500 focus:outline-none hover:bg-red-600 transition-all duration-75 disabled:opacity-50"
+          onClick={() => {
+            pageNumber > 1 && setPageNumber(pageNumber - 1)
+          }}
+          disabled={!(pageNumber > 1)}
+        >
+          <FontAwesomeIcon icon="arrow-left" />
+        </button>
+        <div className="px-3 py-1">
+          Page{' '}
+          <input
+            value={pageNumber}
+            className="w-10 mr-1 text-center p-1 bg-red-50 rounded focus:ring-2 focus:ring-red-500 focus:outline-none"
+            onChange={e => {
+              const v = parseInt(e.target.value)
+              if (v <= totalPages && v >= 0) {
+                setPageNumber(v)
+              }
+            }}
+          ></input>
+          /<span className="ml-1 text-center">{totalPages}</span>
+        </div>
+        <button
+          className="px-3 py-1 bg-red-500 text-white rounded cursor-pointer focus:ring-2 focus:ring-red-500 focus:outline-none hover:bg-red-600 transition-all duration-75 disabled:opacity-50"
+          onClick={() => {
+            pageNumber < totalPages && setPageNumber(pageNumber + 1)
+          }}
+          disabled={!(pageNumber < totalPages)}
+        >
+          <FontAwesomeIcon icon="arrow-right" />
+        </button>
+      </div>
+    </div>
+  )
+}
+
+export default PDFPreview

next.config.js

@@ -1,4 +1,22 @@
 module.exports = {
+  webpack: (config) => {
+    // load worker files as a urls with `file-loader`
+    config.module.rules.unshift({
+      test: /pdf\.worker\.(min\.)?js/,
+      use: [
+        {
+          loader: "file-loader",
+          options: {
+            name: "[contenthash].[ext]",
+            publicPath: "_next/static/worker",
+            outputPath: "static/worker"
+          }
+        }
+      ]
+    });
+
+    return config;
+  },
   reactStrictMode: true,
   images: {
     domains: ['public.dm.files.1drv.com'],

package.json

@@ -18,12 +18,14 @@
     "next": "11.0.0",
     "react": "17.0.2",
     "react-dom": "17.0.2",
+    "react-pdf": "^5.3.0",
     "react-player": "^2.9.0",
     "react-viewer": "^3.2.2",
     "swr": "^0.5.6"
   },
   "devDependencies": {
     "@types/react": "17.0.11",
+    "@types/react-pdf": "^5.0.4",
     "autoprefixer": "^10.2.6",
     "eslint": "7.29.0",
     "eslint-config-next": "11.0.0",

pages/_app.tsx

@@ -14,7 +14,7 @@ import {
   faFile,
   faFolder,
 } from '@fortawesome/free-regular-svg-icons'
-import { faMusic } from '@fortawesome/free-solid-svg-icons'
+import { faMusic, faArrowLeft, faArrowRight } from '@fortawesome/free-solid-svg-icons'
 import { faGithub, faMarkdown } from '@fortawesome/free-brands-svg-icons'
 
 import type { AppProps } from 'next/app'
@@ -34,7 +34,9 @@ library.add(
   faFolder,
   faGithub,
   faMarkdown,
-  faMusic
+  faMusic,
+  faArrowLeft,
+  faArrowRight
 )
 
 function MyApp({ Component, pageProps }: AppProps) {