Massive restructuring, most of the progress on reorganising Data Access Layer etc. finished. Gotta get the app back up and running now

src/ObjectCollections/MongoStoredObjectCollection.ts

@@ -0,0 +1,55 @@
+import mongo from "mongodb";
+import {tryQuery} from "./database";
+import {MongoError} from "../errors";
+import ActiveRecord, {ActiveRecordId} from "../Objects/ActiveRecord";
+
+
+abstract class MongoStoredObjectCollection<IRawData extends {id: ActiveRecordId}> {
+
+    protected constructor(protected mongoDbClientCollection: mongo.Collection) {}
+
+    protected async mongoCreate(objectData: Omit<IRawData, "id">): Promise<IRawData> {
+        return tryQuery(async () => {
+            const insertOneWriteOpResult = await this.mongoDbClientCollection.insertOne(objectData);
+            if (insertOneWriteOpResult.result.ok === 1) {
+                return insertOneWriteOpResult.ops[0]
+            } else {
+                throw new MongoError(`Error creating the object: ${JSON.stringify(objectData)}`);
+            }
+        });
+    }
+
+    protected async mongoRead(id: string): Promise<IRawData | null> {
+        return tryQuery(async () =>
+            await this.mongoDbClientCollection.findOne({_id: id})
+        );
+    }
+
+    protected async mongoFindByAttribute(attribute: string, value: any): Promise<IRawData | null> {
+        return tryQuery(async () =>
+            await this.mongoDbClientCollection.findOne({[attribute]: value})
+        );
+    }
+
+    protected async mongoDelete(objectId: ActiveRecordId, returnObject?: boolean): Promise<IRawData | null | void> {
+        let deletedObject;
+        if (returnObject ?? true) {
+            deletedObject = await this.mongoRead(objectId);
+        }
+        const deleteWriteOpResult = await this.mongoDbClientCollection.deleteOne({_id: objectId});
+        if (deleteWriteOpResult.result.ok === 1) {
+            return deletedObject;
+        } else {
+            throw new MongoError(`Error deleting the object with id: ${JSON.stringify(objectId)}`);
+        }
+    }
+
+    protected async mongoSave(object: IRawData) {
+        await tryQuery(() =>
+            this.mongoDbClientCollection.findOneAndUpdate({_id: object.id}, {$set: {...object, id: undefined}})
+        );
+    }
+}
+
+
+export default MongoStoredObjectCollection;