postupdate scripts engine

package.json

@@ -1,7 +1,7 @@
 {
   "name": "cardo",
   "private": true,
-  "version": "1.2.0",
+  "version": "1.3.0",
   "type": "module",
   "scripts": {
     "dev": "vite",

src-tauri/tauri.conf.json

@@ -7,7 +7,7 @@
   },
   "package": {
     "productName": "Cardo",
-    "version": "1.2.0"
+    "version": "1.3.0"
   },
   "tauri": {
     "updater": {

src/main.tsx

@@ -2,8 +2,14 @@ import ReactDOM from "react-dom/client";
 import App from "./App";
 import "./main.css"
 import "./engines/translations"
+import { postupdate } from "./postupdate";
 
 
-ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
-    <App />
-);
+postupdate().then(
+    () => {
+        ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
+            <App />
+        );
+    }
+)
+

src/postupdate.ts

@@ -0,0 +1,38 @@
+import { appConfigDir, join } from "@tauri-apps/api/path";
+import config from '../src-tauri/tauri.conf.json'
+import { exists, readTextFile, writeTextFile } from "@tauri-apps/api/fs";
+
+
+// migrations in ascending order
+const migrations: { [version: string]: () => Promise<void> } = {
+  '1.3.0': async function () {
+    console.log('Hey you just updated to v1.3.0!')
+  }
+}
+
+
+export async function postupdate() {
+  const updatesFile = await join(await appConfigDir(), 'updates.json')
+  const version = config.package.version
+
+  const appliedUpdates: string[] = await exists(updatesFile) ?
+    JSON.parse(await readTextFile(updatesFile)) : []
+
+  if (appliedUpdates.includes(version)) return // this is not the first time this version runs, just open the app
+
+  // check thought all previous versions to apply 
+  for (const migration of Object.keys(migrations)) {
+    if (!appliedUpdates.includes(migration)) {
+      await migrations[migration]()
+      appliedUpdates.push(migration)
+    }
+  }
+
+  if (!appliedUpdates.includes(version)) {
+    // append this version to the array even when it didn't apply nothing
+    appliedUpdates.push(version)
+  }
+
+  await writeTextFile(updatesFile, JSON.stringify(appliedUpdates))
+
+}