Add device tokens for resuming user sessions

app/models/api/DeviceToken.model.js

@@ -0,0 +1,36 @@
+const { Model } = require('flitter-orm')
+const uuid = require('uuid/v4')
+
+class DeviceTokenModel extends Model {
+    static get schema() {
+        return {
+            user_id: String,
+            create_date: { type: Date, default: () => new Date },
+            expiration_date: {
+                type: Date,
+                default: () => {
+                    const date = new Date();
+                    date.setMonth(date.getMonth() + 1);
+                    return date;
+                }
+            },
+            token: {
+                type: String,
+                default: () => {
+                    return Array(5).fill('').map(_ => uuid()).join('').replace(/-/g, '')
+                }
+            },
+        }
+    }
+
+    static async grant_user(user) {
+        const tok = new this({
+            user_id: user.id,
+        })
+
+        await tok.save()
+        return tok
+    }
+}
+
+module.exports = exports = DeviceTokenModel