added error handling if row exists in db for AltBookConnector

src/database/connectors/AltBookConnector.py

@@ -2,6 +2,7 @@ from ..AltConnector import AltConnector
 from database.models.Book import Book
 from datetime import datetime
 
+
 class AltBookConnector(AltConnector):
     def save_book(self, item):
         conn = self.get_connection()
@@ -14,12 +15,13 @@ class AltBookConnector(AltConnector):
             'image_path': item['images'][0]['path'],
             'created_at': datetime.utcnow(),
             'updated_at': datetime.utcnow(),
-        })  # TODO
+        })
 
-        sql = 'INSERT INTO books({keys}) VALUES({values}) ;'.format(
+        sql = """INSERT INTO books({keys}) VALUES({values}) ON DUPLICATE KEY UPDATE {items};""".format(
             keys=', '.join(real_field.keys()),
-            values=', '.join(list('%s' for key in real_field.keys()))
+            values=', '.join('%s' for key in real_field.keys()),
+            items=', '.join('{k}={v}'.format(k=k, v='%s') for k in real_field.keys() if k != 'created_at')
         )
 
-        cursor.execute(sql, real_field.values())
+        cursor.execute(sql, list(real_field.values()) + list(v for k, v in real_field.items() if k != 'created_at'))
         conn.commit()