Improve script URL ecoding

added some magic to get scripts to efficiently encoded into the URL.
We're using pako to compress the script, but this outputs to a 8bit
array. Stringifying this array adds a lot of overhead, because "125"
has three characters in it.
Instead we're using the character codes to turn these a bit numbers
into single characters base64 is used as well because not all of the
characters are allowed in a url (and b64 is better than
encodeURIComponent).

app/.gitignore

@@ -0,0 +1 @@
+dist

app/web/package.json

@@ -30,6 +30,7 @@
     "monaco-editor-webpack-plugin": "^1.9.1",
     "netlify-identity-widget": "^1.9.1",
     "opencascade.js": "^0.1.15",
+    "pako": "^2.0.3",
     "prop-types": "^15.7.2",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
@@ -44,10 +45,10 @@
     "three": "^0.118.3"
   },
   "devDependencies": {
-    "postcss": "^8.2.13",
     "autoprefixer": "^10.2.5",
     "html-webpack-plugin": "^4.5.0",
     "opentype.js": "^1.3.3",
+    "postcss": "^8.2.13",
     "postcss-loader": "4.0.2",
     "tailwindcss": "^2.1.2",
     "worker-loader": "^3.0.7"

app/web/src/components/IdeToolbarNew/IdeToolbarNew.js

@@ -4,11 +4,13 @@ import { isBrowser } from '@redwoodjs/prerender/browserUtils'
 import { useIdeState, codeStorageKey } from 'src/helpers/hooks/useIdeState'
 import { copyTextToClipboard } from 'src/helpers/clipboard'
 import { requestRender } from 'src/helpers/hooks/useIdeState'
+import { encode, decode } from 'src/helpers/compress'
 
 export const IdeContext = createContext()
 const IdeToolbarNew = ({ cadPackage }) => {
   const [state, thunkDispatch] = useIdeState()
   const scriptKey = 'encoded_script'
+  const scriptKeyV2 = 'encoded_script_v2'
   useEffect(() => {
     thunkDispatch({
       type: 'initIde',
@@ -19,9 +21,12 @@ const IdeToolbarNew = ({ cadPackage }) => {
     if (isBrowser) {
       hash = window.location.hash
     }
-    const [key, scriptBase64] = hash.slice(1).split('=')
+    const [key, encodedScript] = hash.slice(1).split('=')
     if (key === scriptKey) {
-      const script = atob(scriptBase64)
+      const script = atob(encodedScript)
+      thunkDispatch({ type: 'updateCode', payload: script })
+    } else if (key === scriptKeyV2) {
+      const script = decode(encodedScript)
       thunkDispatch({ type: 'updateCode', payload: script })
     }
     window.location.hash = ''
@@ -43,8 +48,8 @@ const IdeToolbarNew = ({ cadPackage }) => {
   }
   function handleMakeLink() {
     if (isBrowser) {
-      const scriptBase64 = btoa(state.code)
-      window.location.hash = `encoded_script=${scriptBase64}`
+      const encodedScript = encode(state.code)
+      window.location.hash = `${scriptKeyV2}=${encodedScript}`
       copyTextToClipboard(window.location.href)
     }
   }

app/web/src/helpers/compress.ts

@@ -0,0 +1,21 @@
+import { inflate, deflate } from 'pako'
+
+/*
+  some magic to get scripts to efficiently encoded into the URL.
+  We're using pako to compress the script, but this outputs to a 8bit array. Stringifying this array adds a lot of overhead, because "125" has three characters in it
+  Instead we're using the character codes to turn these a bit numbers into single characters
+  base64 is used as well because not all of the characters are allowed in a url (and b64 is better than encodeURIComponent)
+*/
+
+export const encode = (string: string): string =>
+  btoa(String.fromCharCode.apply(null, deflate(string)))
+
+export const decode = (string: string): string =>
+  inflate(
+    new Uint8Array(
+      atob(string)
+        .split('')
+        .map((character) => character.charCodeAt(0))
+    ),
+    { to: 'string' }
+  )

app/yarn.lock

@@ -11816,6 +11816,11 @@ p-try@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
+pako@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/pako/-/pako-2.0.3.tgz#cdf475e31b678565251406de9e759196a0ea7a43"
+  integrity sha512-WjR1hOeg+kki3ZIOjaf4b5WVcay1jaliKSYiEaB1XzwhMQZJxRdQRv0V31EKBYlxb4T7SK3hjfc/jxyU64BoSw==
+
 pako@~1.0.5:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
@@ -13134,7 +13139,7 @@ react-docgen@^5.0.0:
     node-dir "^0.1.10"
     strip-indent "^3.0.0"
 
-react-dom@17.0.1, react-dom@^17.0.1:
+react-dom@^17.0.1:
   version "17.0.1"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-17.0.1.tgz#1de2560474ec9f0e334285662ede52dbc5426fc6"
   integrity sha512-6eV150oJZ9U2t9svnsspTMrWNyHc6chX0KzDeAOXftRa8bNeOKTTfCJ7KorIwenkHd2xqVTBTCZd79yk/lx/Ug==
@@ -13367,7 +13372,7 @@ react-use-measure@^2.0.3:
   dependencies:
     debounce "^1.2.0"
 
-react@17.0.1, react@^17.0.1:
+react@^17.0.1:
   version "17.0.1"
   resolved "https://registry.yarnpkg.com/react/-/react-17.0.1.tgz#6e0600416bd57574e3f86d92edba3d9008726127"
   integrity sha512-lG9c9UuMHdcAexXtigOZLX8exLWkW0Ku29qPRU8uhF2R9BN96dLCt0psvzPLlHc5OWkgymP3qwTRgbnw5BKx3w==