swap, dca, limit-order finished

config/db.js

@@ -0,0 +1,17 @@
+const {MongoClient} = require('mongodb');
+
+const uri = process.env.MONGO_CONNECTION_STRING;
+
+let client, database;
+
+async function connectToDB(){
+    if(!client){
+        client = new MongoClient(uri);
+        database = client.db('solana_dex');
+        await client.connect();
+        console.log('DB connected');
+    }
+    return {client,database};
+}
+
+module.exports = {connectToDB};

models/mintTokenModel.js

@@ -0,0 +1,9 @@
+const { Schema, model } = require('mongoose');
+
+const tokenSchema = new Schema({
+  address: { type: String, required: true },
+  name: { type: String, required: true },
+  symbol: { type: String, required: true }
+});
+
+module.exports = model('Token', tokenSchema);