Add get latest magazine

app/dao/magazines_dao.py

@@ -7,6 +7,10 @@ def dao_get_magazines():
     return Magazine.query.order_by(Magazine.created_at.desc()).all()
 
 
+def dao_get_latest_magazine():
+    return Magazine.query.order_by(Magazine.created_at.desc()).first()
+
+
 def dao_get_magazine_by_id(id):
     return Magazine.query.filter_by(id=id).one()
 

app/routes/magazines/rest.py

@@ -10,7 +10,9 @@
 from app.na_celery import upload_tasks
 from app.dao import dao_create_record, dao_update_record
 from app.dao.emails_dao import dao_create_email
-from app.dao.magazines_dao import dao_get_magazine_by_id, dao_get_magazine_by_old_id, dao_get_magazines
+from app.dao.magazines_dao import (
+    dao_get_magazine_by_id, dao_get_magazine_by_old_id, dao_get_magazines, dao_get_latest_magazine
+)
 from app.dao.users_dao import dao_get_users
 from app.errors import register_errors, InvalidRequest
 from app.models import Email, Magazine, MAGAZINE, READY
@@ -94,6 +96,14 @@ def update_magazine(id):
     raise InvalidRequest('Invalid filename for magazine: {}'.format(data['filename']), 400)
 
 
+@magazines_blueprint.route('/magazine/latest', methods=['GET'])
+@jwt_required
+def get_latest_magazine():
+    magazine = dao_get_latest_magazine()
+
+    return jsonify(magazine.serialize())
+
+
 @magazines_blueprint.route('/magazines', methods=['GET'])
 @jwt_required
 def get_magazines():

tests/app/routes/magazines/test_rest.py

@@ -175,3 +175,17 @@ def it_gets_magazine_by_old_id(self, client, db_session):
         )
         assert response.status_code == 200
         assert response.json['id'] == str(magazine.id)
+
+
+class WhenGettingLatestMagazine:
+
+    def it_gets_the_latest_magazine(self, client, db_session):
+        create_magazine(old_id='1', title='title', filename='new filename')
+        magazine = create_magazine(old_id='2', title='title 2', filename='new filename 2')
+
+        response = client.get(
+            url_for('magazines.get_latest_magazine', old_id=magazine.old_id),
+            headers=[('Content-Type', 'application/json'), create_authorization_header()]
+        )
+        assert response.status_code == 200
+        assert response.json['id'] == str(magazine.id)