Created the token (session, apikey) model / schema

models/Token.js

@@ -0,0 +1,28 @@
+const mongoose = require('mongoose');
+const crypto = require('crypto');
+
+const TokenSchema = new mongoose.Schema({
+    token: { // The token used to log in to the user account
+        type: String,
+        default: () => crypto.randomBytes(48).toString('hex')
+    },
+    user_id: { // The user id to which the token logs in
+        type: mongoose.Schema.ObjectId,
+        required: true
+    },
+    type: { // The type of the token
+        type: String,
+        enum: ["api", "session"],
+        default: "session"
+    },
+    user_agent: { // The user agent of the browser
+        type: String,
+        required: false
+    },
+    created: { // The date when the session has been created
+        type: Date,
+        default: Date.now
+    }
+});
+
+module.exports = mongoose.model('tokens', TokenSchema);