Track the deck counts in a database.

src/draw.js

@@ -0,0 +1,29 @@
+import * as mongodb from 'mongodb';
+import { strategies } from './strategies';
+
+const MongoClient = mongodb.MongoClient;
+
+const drawCard = async () => {
+    const url = 'mongodb://localhost:27017';
+    const dbName = 'oblique';
+
+    const client = await MongoClient.connect(url, { useNewUrlParser: true });
+    const db = client.db(dbName);
+    const cardCounts = db.collection('counts');
+
+    const theCard = strategies[ Math.floor(Math.random()*strategies.length) ].toLowerCase();
+    const trackingName = theCard.replace(/\W/g, '');
+
+    const updated = await cardCounts.findOneAndUpdate(
+        { card: trackingName },
+        { $set: { card: trackingName }, $inc: { count: 1 } },
+        { upsert: true, returnNewDocument: true },
+    );
+
+    client.close();
+    return theCard;
+}
+
+module.exports = {
+    drawCard,
+}