Add device tokens for resuming user sessions

app/controllers/api/v1/Session.controller.js

@@ -2,7 +2,7 @@ const { Controller } = require('libflitter')
 
 class SessionController extends Controller {
     static get services() {
-        return [...super.services, 'configs']
+        return [...super.services, 'configs', 'models', 'auth']
     }
 
     async get_session(req, res, next) {
@@ -38,6 +38,41 @@ class SessionController extends Controller {
             },
         }
     }
+
+    async get_device_token(req, res, next) {
+        const DeviceToken = this.models.get('api:DeviceToken')
+        const token = await DeviceToken.grant_user(req.user)
+
+        return res.api({
+            token: token.token,
+            expiration_date: token.expiration_date,
+        })
+    }
+
+    async resume(req, res, next) {
+        const DeviceToken = this.models.get('api:DeviceToken')
+        const User = this.models.get('auth:User')
+        const token = await DeviceToken.findOne({
+            token: req.params.token,
+            expiration_date: { $gt: new Date },
+        });
+
+        if ( !token ) {
+            return res.status(404)
+                .message('Device token expired or invalid.')
+                .api()
+        }
+
+        const user = await User.findById(token.user_id);
+        if ( !user ) {
+            return res.status(404)
+                .message('Device token expired or invalid.')
+                .api()
+        }
+
+        await this.auth.get_provider().session(req, user)
+        return res.api()
+    }
 }
 
 module.exports = exports = SessionController