diff --git a/src/util/Database.ts b/src/util/Database.ts
index ed45a9ad..56f53f9a 100644
--- a/src/util/Database.ts
+++ b/src/util/Database.ts
@@ -1,9 +1,89 @@
-import { MongoDatabase } from "lambert-db";
+import "./MongoBigInt";
+import mongoose, { Collection } from "mongoose";
+import { ChangeStream, ChangeEvent, Long } from "mongodb";
+import EventEmitter from "events";
+const uri = process.env.MONGO_URL || "mongodb://localhost:27017/fosscord?readPreference=secondaryPreferred";
-// TODO: load url from config
-const db = new MongoDatabase("mongodb://127.0.0.1:27017/lambert?readPreference=secondaryPreferred", {
- useNewUrlParser: true,
- useUnifiedTopology: false,
-});
+const connection = mongoose.createConnection(uri, { autoIndex: true });
-export default db;
+export default connection;
+
+export interface MongooseCache {
+ on(event: "delete", listener: (id: string) => void): this;
+ on(event: "change", listener: (data: any) => void): this;
+ on(event: "insert", listener: (data: any) => void): this;
+ on(event: "close", listener: () => void): this;
+}
+
+export class MongooseCache extends EventEmitter {
+ public stream: ChangeStream;
+ public data: any;
+
+ constructor(
+ public collection: Collection,
+ public pipeline: Array<Record<string, unknown>>,
+ public opts: {
+ onlyEvents: boolean;
+ }
+ ) {
+ super();
+ }
+
+ async init() {
+ this.stream = this.collection.watch(this.pipeline, { fullDocument: "updateLookup" });
+
+ this.stream.on("change", this.change);
+ this.stream.on("close", this.destroy);
+ this.stream.on("error", console.error);
+
+ if (!this.opts.onlyEvents) {
+ this.data = await this.collection.aggregate(this.pipeline).toArray();
+ }
+ }
+
+ convertResult(obj: any) {
+ if (obj instanceof Long) return BigInt(obj.toString());
+ if (typeof obj === "object") {
+ Object.keys(obj).forEach((key) => {
+ obj[key] = this.convertResult(obj[key]);
+ });
+ }
+
+ return obj;
+ }
+
+ change = (doc: ChangeEvent) => {
+ // @ts-ignore
+ if (doc.fullDocument) {
+ // @ts-ignore
+ if (!this.opts.onlyEvents) this.data = doc.fullDocument;
+ }
+
+ switch (doc.operationType) {
+ case "dropDatabase":
+ return this.destroy();
+ case "drop":
+ return this.destroy();
+ case "delete":
+ return this.emit("delete", doc.documentKey._id.toHexString());
+ case "insert":
+ return this.emit("insert", doc.fullDocument);
+ case "update":
+ case "replace":
+ return this.emit("change", doc.fullDocument);
+ case "invalidate":
+ return this.destroy();
+ default:
+ return;
+ }
+ };
+
+ destroy() {
+ this.stream.off("change", this.change);
+ this.emit("close");
+
+ if (this.stream.isClosed()) return;
+
+ return this.stream.close();
+ }
+}
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