Rework user scripts, update DB schema to support embeddings

sist2-vue/src/ml/ModelStore.js

@@ -0,0 +1,67 @@
+class ModelStore {
+
+    _ok;
+    _db;
+    _resolve;
+    _loadingPromise;
+
+    constructor() {
+        const request = window.indexedDB.open("ModelStore", 1);
+
+        request.onerror = () => {
+            this._ok = false;
+        }
+
+        request.onupgradeneeded = event => {
+            const db = event.target.result;
+            db.createObjectStore("models");
+        }
+
+        request.onsuccess = () => {
+            this._ok = true;
+            this._db = request.result;
+
+            this._resolve();
+        }
+
+        this._loadingPromise = new Promise(resolve => this._resolve = resolve);
+    }
+
+    async get(key) {
+        await this._loadingPromise;
+
+        const req = this._db.transaction(["models"], "readwrite")
+            .objectStore("models")
+            .get(key);
+
+        return new Promise(resolve => {
+            req.onsuccess = event => {
+                resolve(event.target.result);
+            };
+            req.onerror = event => {
+                console.log("ERROR:");
+                console.log(event);
+                resolve(null);
+            };
+        });
+    }
+
+    async set(key, val) {
+        await this._loadingPromise;
+
+        const req = this._db.transaction(["models"], "readwrite")
+            .objectStore("models")
+            .put(val, key);
+
+        return new Promise(resolve => {
+            req.onsuccess = () => {
+                resolve(true);
+            };
+            req.onerror = () => {
+                resolve(false);
+            };
+        });
+    }
+}
+
+export default new ModelStore();