minor changes

chains/cerberus_web_client.py

@@ -0,0 +1,31 @@
+import json
+from abc import abstractmethod
+
+import requests
+
+from supermarket_chain import SupermarketChain
+
+
+class CerberusWebClient:
+
+    def get_download_url(self, store_id: int, category: SupermarketChain.XMLFilesCategory, session: requests.Session) \
+            -> str:
+        hostname: str = "https://publishedprices.co.il"
+
+        # Post the payload to the site to log in
+        session.post(hostname + "/login/user", data={'username': self.username})
+
+        # Scrape the data
+        ajax_dir_payload: dict = {'iDisplayLength': 100000, 'sSearch': category.name.replace('s', '')}
+        s: requests.Response = session.post(hostname + "/file/ajax_dir", data=ajax_dir_payload)
+        s_json: dict = json.loads(s.text)
+        suffix: str = next(d['name'] for d in s_json['aaData'] if f'-{store_id:03d}-20' in d['name'])
+
+        download_url: str = hostname + "/file/d/" + suffix
+        print(download_url)
+        return download_url
+
+    @property
+    @abstractmethod
+    def username(self):
+        pass