Feature: Implemented thumbnail.png saving and load. Projects on homepage will have images (#5133)

* feature: implemented saving thumbnail.png to have project thumbnails in the home page

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* Trigger CI

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* bump

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* bump

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* bump

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* bump

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* bump

* Fix the failing test by increasing window height (related to toast covering now-larger project tiles)

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Pierre Jacquier <pierre@zoo.dev>
Co-authored-by: Pierre Jacquier <pierrejacquier39@gmail.com>
Co-authored-by: Frank Noirot <frank@zoo.dev>

src/lib/desktop.ts

@@ -10,6 +10,7 @@ import {
 import {
   PROJECT_ENTRYPOINT,
   PROJECT_FOLDER,
+  PROJECT_IMAGE_NAME,
   PROJECT_SETTINGS_FILE_NAME,
   SETTINGS_FILE_NAME,
   TELEMETRY_FILE_NAME,
@@ -625,3 +626,19 @@ export const getUser = async (
   }
   return Promise.reject(new Error('unreachable'))
 }
+
+export const writeProjectThumbnailFile = async (
+  dataUrl: string,
+  projectDirectoryPath: string
+) => {
+  const filePath = window.electron.path.join(
+    projectDirectoryPath,
+    PROJECT_IMAGE_NAME
+  )
+  const data = atob(dataUrl.substring('data:image/png;base64,'.length))
+  const asArray = new Uint8Array(data.length)
+  for (let i = 0, len = data.length; i < len; ++i) {
+    asArray[i] = data.charCodeAt(i)
+  }
+  return window.electron.writeFile(filePath, asArray)
+}