From ce107072a4b45cd681c29ad19a9da3c503165abc Mon Sep 17 00:00:00 2001
From: Ananth Venkatesh <46249765+quantum9Innovation@users.noreply.github.com>
Date: Fri, 16 Feb 2024 19:39:26 +0000
Subject: [PATCH] Revamp documents Include new citation hash function, search
 by citation hash, toasts, and QR codes

---
 package-lock.json                             | 22 +++++
 package.json                                  |  3 +
 .../document/view/[slug]/DocumentViewer.tsx   | 24 +++--
 .../document/view/[slug]/VersionChooser.tsx   | 14 ++-
 src/app/search/page.tsx                       | 29 +++++-
 src/app/utils/hash.ts                         |  8 +-
 src/app/utils/search.worker.ts                | 94 ++++++++++++-------
 7 files changed, 147 insertions(+), 47 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 2fa252a..26294ad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,9 +9,11 @@
       "version": "0.1.0",
       "dependencies": {
         "@tanstack/react-query": "^5.20.2",
+        "fnv-plus": "^1.3.1",
         "million": "^3.0.3",
         "minisearch": "^6.3.0",
         "next": "14.1.0",
+        "qrcode.react": "^3.1.0",
         "react": "^18",
         "react-dom": "^18",
         "react-icons": "^5.0.1",
@@ -23,6 +25,7 @@
       "devDependencies": {
         "@redux-devtools/extension": "^3.3.0",
         "@types/file-saver": "^2.0.7",
+        "@types/fnv-plus": "^1.3.2",
         "@types/node": "^20",
         "@types/react": "^18",
         "@types/react-dom": "^18",
@@ -1042,6 +1045,12 @@
       "integrity": "sha512-dNKVfHd/jk0SkR/exKGj2ggkB45MAkzvWCaqLUUgkyjITkGNzH8H+yUwr+BLJUBjZOe9w8X3wgmXhZDRg1ED6A==",
       "dev": true
     },
+    "node_modules/@types/fnv-plus": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/@types/fnv-plus/-/fnv-plus-1.3.2.tgz",
+      "integrity": "sha512-Bgr5yn2dph2q8HZKDS002Pob6vaRTRfhqN9E+TOhjKsJvnfZXULPR3ihH8dL5ZjgxbNhqhTn9hijpbAMPtKZzw==",
+      "dev": true
+    },
     "node_modules/@types/json5": {
       "version": "0.0.29",
       "resolved": "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz",
@@ -2654,6 +2663,11 @@
       "integrity": "sha512-36yxDn5H7OFZQla0/jFJmbIKTdZAQHngCedGxiMmpNfEZM0sdEeT+WczLQrjK6D7o2aiyLYDnkw0R3JK0Qv1RQ==",
       "dev": true
     },
+    "node_modules/fnv-plus": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/fnv-plus/-/fnv-plus-1.3.1.tgz",
+      "integrity": "sha512-Gz1EvfOneuFfk4yG458dJ3TLJ7gV19q3OM/vVvvHf7eT02Hm1DleB4edsia6ahbKgAYxO9gvyQ1ioWZR+a00Yw=="
+    },
     "node_modules/for-each": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.3.tgz",
@@ -4340,6 +4354,14 @@
         "node": ">=6"
       }
     },
+    "node_modules/qrcode.react": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/qrcode.react/-/qrcode.react-3.1.0.tgz",
+      "integrity": "sha512-oyF+Urr3oAMUG/OiOuONL3HXM+53wvuH3mtIWQrYmsXoAq0DkvZp2RYUWFSMFtbdOpuS++9v+WAkzNVkMlNW6Q==",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0"
+      }
+    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
diff --git a/package.json b/package.json
index e7ddcd5..cd48a47 100644
--- a/package.json
+++ b/package.json
@@ -11,9 +11,11 @@
   },
   "dependencies": {
     "@tanstack/react-query": "^5.20.2",
+    "fnv-plus": "^1.3.1",
     "million": "^3.0.3",
     "minisearch": "^6.3.0",
     "next": "14.1.0",
+    "qrcode.react": "^3.1.0",
     "react": "^18",
     "react-dom": "^18",
     "react-icons": "^5.0.1",
@@ -25,6 +27,7 @@
   "devDependencies": {
     "@redux-devtools/extension": "^3.3.0",
     "@types/file-saver": "^2.0.7",
+    "@types/fnv-plus": "^1.3.2",
     "@types/node": "^20",
     "@types/react": "^18",
     "@types/react-dom": "^18",
diff --git a/src/app/document/view/[slug]/DocumentViewer.tsx b/src/app/document/view/[slug]/DocumentViewer.tsx
index bbd579a..0aeb6f2 100644
--- a/src/app/document/view/[slug]/DocumentViewer.tsx
+++ b/src/app/document/view/[slug]/DocumentViewer.tsx
@@ -14,6 +14,7 @@ import generateHash from '@/app/utils/hash'
 import { Suspense } from 'react'
 import { loadDocument } from '@/app/db/loaders'
 import { useSuspenseQuery } from '@tanstack/react-query'
+import QRCode from 'qrcode.react'
 
 const zillaSlab = Zilla_Slab({ subsets: ['latin'], weight: ['500'] })
 
@@ -48,15 +49,20 @@ const DocumentViewer = ({ slug }: Readonly<{ slug: string }>) => {
 
   return (
     <div className='max-w-4xl lg:max-w-6xl mx-auto'>
-      <h1
-        className={`
-            text-slate-800 text-5xl mb-4
-            ${zillaSlab.className}
-            text-wrap break-words hyphens-auto
-          `}
-      >
-        {title}
-      </h1>
+      <div>
+        <div className='float-left mr-8 mb-4 mt-4'>
+          <QRCode value={citation ?? `eeXiv:${generateHash(slug)}`} />
+        </div>
+        <h1
+          className={`
+              text-slate-800 text-5xl mb-4
+              ${zillaSlab.className}
+              text-wrap break-words hyphens-auto inline
+            `}
+        >
+          {title}
+        </h1>
+      </div>
       <p className={`text-slate-800 mt-2`}>
         <Authors authors={authors} />
       </p>
diff --git a/src/app/document/view/[slug]/VersionChooser.tsx b/src/app/document/view/[slug]/VersionChooser.tsx
index 1dbfe5e..e3aee65 100644
--- a/src/app/document/view/[slug]/VersionChooser.tsx
+++ b/src/app/document/view/[slug]/VersionChooser.tsx
@@ -6,6 +6,7 @@ import { loadAuthors } from '@/app/db/loaders'
 import { useSuspenseQuery } from '@tanstack/react-query'
 import { epoch2date } from '@/app/utils/epoch2datestring'
 import { toast } from 'react-toastify'
+import generateHash from '@/app/utils/hash'
 
 const VersionChooser = ({
   doc,
@@ -26,7 +27,7 @@ const VersionChooser = ({
 
   const fileEnding = file === 'other' ? '' : `.${file}`
   const [selectedRevision, setSelectedRevision] = useState<number>(latest) // Initialize the selected revision with the latest revision
-  const notifyCopied = () => toast('BibTeX copied to clipboard!')
+  const notifyCopied = (content: string) => toast.success(`${content} copied to clipboard!`)
 
   const handleClick = () => {
     const bibtex = `@article{
@@ -45,7 +46,13 @@ const VersionChooser = ({
   url={${window.location.href}}
 }`
     navigator.clipboard.writeText(bibtex)
-    notifyCopied()
+    notifyCopied('BibTeX')
+  }
+
+  const handleCopy = () => {
+    const id = doc.citation ? doc.citation : generateHash(slug)
+    navigator.clipboard.writeText(`eeXiv:${id}`)
+    notifyCopied('Citation')
   }
 
   return (
@@ -75,6 +82,9 @@ const VersionChooser = ({
       <button className='button-alternate' onClick={handleClick}>
         Export BibTeX
       </button>
+      <button className='button-alternate' onClick={handleCopy}>
+        Copy citation
+      </button>
       <select
         className='select-default'
         value={`v${selectedRevision}`}
diff --git a/src/app/search/page.tsx b/src/app/search/page.tsx
index 778f348..e8f7d5c 100644
--- a/src/app/search/page.tsx
+++ b/src/app/search/page.tsx
@@ -7,6 +7,9 @@ import { epoch2datestring } from '../utils/epoch2datestring'
 import searchDocs, { CustomSearchResult } from '@/app/utils/searchDocs'
 import { useSuspenseQuery } from '@tanstack/react-query'
 import cardEffects from '@/app/styles/cardEffects.module.css'
+import { toast } from 'react-toastify'
+import { useEffect } from 'react'
+import { hash as fnv } from 'fnv-plus'
 
 const zillaSlab = Zilla_Slab({ subsets: ['latin'], weight: ['500', '700'] })
 
@@ -71,6 +74,30 @@ export default function Page() {
   const router = useRouter()
   const searchParams = useSearchParams()
   const search = decodeURIComponent(searchParams.get('q') as string)
+  
+  let invalid = false
+
+  if (search.toLowerCase().startsWith('eexiv')) {
+    const id = search.slice(6)
+
+    if (id.length !== 12) {
+      invalid = true
+    } else {
+      const base = id.slice(0, 10)
+      const ending = id.slice(10, 12)
+      const e_ending = fnv(base).str().substring(0, 2)
+
+      if (ending !== e_ending) {
+        invalid = true
+      }
+    }
+  }
+
+  useEffect(() => {
+    if (invalid) {
+      toast.error('Invalid eeXiv identifier')
+    }
+  }, [invalid])
 
   const { data, error } = useSuspenseQuery({
     queryKey: [search],
@@ -93,7 +120,7 @@ export default function Page() {
         {search}
         {`"`}
       </h1>
-      {data.length === 0 ? (
+      {(data.length === 0 || invalid) ? (
         <p className='text-lg px-2'>No results found.</p>
       ) : (
         data.map((result) => (
diff --git a/src/app/utils/hash.ts b/src/app/utils/hash.ts
index 246d3a1..893ab72 100644
--- a/src/app/utils/hash.ts
+++ b/src/app/utils/hash.ts
@@ -1,6 +1,8 @@
-import crypto from 'crypto'
+import { hash as fnv } from 'fnv-plus'
 
 export default function hash(key: string) {
-  // git style hash
-  return crypto.createHash('sha256').update(key).digest('hex').substring(0, 7)
+  // fast non-cryptographic hash with error correction
+  const base = fnv(key).str().substring(0, 10)
+  const ending = fnv(base).str().substring(0, 2)
+  return `${base}${ending}`
 }
diff --git a/src/app/utils/search.worker.ts b/src/app/utils/search.worker.ts
index 58cb602..67981fe 100644
--- a/src/app/utils/search.worker.ts
+++ b/src/app/utils/search.worker.ts
@@ -1,11 +1,37 @@
 import { documents, authors, affiliations, topics } from '@/app/db/data'
 import MiniSearch from 'minisearch'
 import { CustomSearchResult } from './searchDocs'
-import crypto from 'crypto'
 import hash from './hash'
+import { hash as fnv } from 'fnv-plus'
+import { Document } from '../db/data'
 
-// converting the documents object into an array that can be index by minisearch
-const docs = Object.entries(documents).map(([key, value]) => ({
+const miniSearch = new MiniSearch({
+  fields: [
+    'abstract',
+    'keywords',
+    'topics',
+    'authors',
+    'title',
+    'type',
+    'affiliations',
+    'citation',
+    'doi',
+  ],
+  storeFields: ['key', 'abstract', 'manifest'],
+  searchOptions: {
+    boost: {
+      title: 3,
+      keywords: 2,
+      topics: 1,
+      authors: 2,
+      abstract: 0.3,
+    },
+    fuzzy: 0.2,
+    prefix: true,
+  },
+})
+
+const serializeDoc = (key: string, value: Document) => ({
   id: key,
   keywords: value.manifest.keywords.join(' '),
   abstract: value.abstract,
@@ -36,37 +62,41 @@ const docs = Object.entries(documents).map(([key, value]) => ({
     )
     .join(' '),
   key: key,
-  citation: value.citation ? value.citation : hash(key),
-  doi: value.doi ? value.doi : undefined,
-}))
-
-const miniSearch = new MiniSearch({
-  fields: [
-    'abstract',
-    'keywords',
-    'topics',
-    'authors',
-    'title',
-    'type',
-    'affiliations',
-    'citation',
-    'doi',
-  ],
-  storeFields: ['key', 'abstract', 'manifest'],
-  searchOptions: {
-    boost: {
-      title: 3,
-      keywords: 2,
-      topics: 1,
-      authors: 2,
-      abstract: 0.3,
-    },
-    fuzzy: 0.2,
-    prefix: true,
-  },
+  doi: value.doi ? value.doi : undefined
 })
-miniSearch.addAll(docs)
 
 onmessage = (e: MessageEvent<string>) => {
+  // check if searching for eeXiv citation
+  if (e.data.toLowerCase().startsWith('eexiv:')) {
+    const id = e.data.slice(6)
+
+    if (id.length !== 12) {
+      postMessage([])
+    } else {
+      const base = id.slice(0, 10)
+      const ending = id.slice(10, 12)
+      const e_ending = fnv(base).str().substring(0, 2)
+
+      if (ending !== e_ending) {
+        postMessage([])
+      }
+    }
+
+    Object.keys(documents).forEach((key) => {
+      if (documents[key].citation === id) {
+        postMessage([serializeDoc(key, documents[key])])
+      }
+
+      const hashed = hash(key)
+      if (hashed === id) {
+        postMessage([serializeDoc(key, documents[key])])
+      }
+    })
+  }
+
+  // converting the documents object into an array that can be index by minisearch
+  const docs = Object.entries(documents).map(([key, value]) => (serializeDoc(key, value)))
+
+  miniSearch.addAll(docs)
   postMessage(miniSearch.search(e.data) as CustomSearchResult[])
 }