Add last_modified to get_listings and contracts

Author: hoffmabc

api/restapi.py

@@ -230,7 +230,8 @@ def parse_listings(listings):
                         "currency_code": l.currency_code,
                         "nsfw": l.nsfw,
                         "origin": str(CountryCode.Name(l.origin)),
-                        "ships_to": []
+                        "ships_to": [],
+                        "last_modified": l.last_modified
                     }
                     if l.contract_type != 0:
                         listing_json["contract_type"] = str(objects.Listings.ContractType.Name(l.contract_type))

market/contracts.py

@@ -149,7 +149,8 @@ def create(self,
                         "metadata": {
                             "version": "1",
                             "category": metadata_category.lower(),
-                            "category_sub": "fixed price"
+                            "category_sub": "fixed price",
+                            "last_modified": int(time.time())
                         },
                         "id": {
                             "guid": self.keychain.guid.encode("hex"),
@@ -1056,6 +1057,7 @@ def save(self):
             data.contract_type = listings.DIGITAL_GOOD
         elif self.contract["vendor_offer"]["listing"]["metadata"]["category"].lower() == "service":
             data.contract_type = listings.SERVICE
+        data.last_modified = int(time.time())
 
         # save the mapping of the contract file path and contract hash in the database
         self.db.filemap.insert(data.contract_hash.encode("hex"), file_path[len(DATA_FOLDER):])

protos/objects.proto

@@ -121,6 +121,7 @@ message Listings {
         bytes avatar_hash             = 10;
         string handle                 = 11;
         ContractType contract_type    = 12;
+        uint64 last_modified          = 13;
     }
 
     enum ContractType {