1 files changed, 51 insertions, 0 deletions
diff --git a/src/server/GarbageColletor.ts b/src/server/GarbageColletor.ts
new file mode 100644
index 000000000..f26b0cec6
--- /dev/null
+++ b/src/server/GarbageColletor.ts
@@ -0,0 +1,51 @@
+import { Database } from './database';
+
+function addDoc(doc: any, ids: string[]) {
+    for (const key in doc) {
+        if (!doc.hasOwnProperty(key)) {
+            continue;
+        }
+        const field = doc[key];
+        if (!(field instanceof Object)) {
+            continue;
+        }
+        if (field.__type === "proxy") {
+            ids.push(field.fieldId);
+        } else if (field.__type === "list") {
+            addDoc(field.fields, ids);
+        }
+    }
+}
+
+async function GarbageCollect() {
+    // await new Promise(res => setTimeout(res, 3000));
+    const cursor = await Database.Instance.query({}, 'users');
+    const users = await cursor.toArray();
+    const ids: string[] = users.map(user => user.userDocumentId);
+    const visited = new Set<string>();
+
+    while (ids.length) {
+        const id = ids.pop()!;
+        if (visited.has(id)) continue;
+        const doc = await new Promise<{ [key: string]: any }>(res => Database.Instance.getDocument(id, res, "newDocuments"));
+        if (doc === undefined) {
+            console.log(`Couldn't find field with Id ${id}`);
+            continue;
+        }
+        visited.add(id);
+        addDoc(doc.fields, ids);
+        console.log(`To Go: ${ids.length}, visited: ${visited.size}`);
+    }
+
+    console.log(`Done: ${visited.size}`);
+
+    cursor.close();
+
+    const toDeleteCursor = await Database.Instance.query({ _id: { $nin: Array.from(visited) } });
+    const toDelete = (await toDeleteCursor.toArray()).map(doc => doc._id);
+    toDeleteCursor.close();
+    const result = await Database.Instance.delete({ _id: { $in: toDelete } }, "newDocuments");
+    console.log(`${result.deletedCount} documents deleted`);
+}
+
+GarbageCollect();