feat: handle item updates

README.md

@@ -23,5 +23,5 @@
 - [x] Edge cases: mark as read during sync (if marked as read on server or not)
 - [x] Proper filename escaping
 - [ ] Command to force regenerate all HTML files (incl. recompute datetimes & paths)
-- [ ] Handle item updates
+- [x] Handle item updates
 - [ ] Actually think about the issues created by the duplicate warning

main.py

@@ -146,7 +146,7 @@ def synchronize_with_server(config, client_session):
     config.update_lock.touch()
     print("Synchronizing with server...")
 
-    new_items = 0
+    new_items, updated_items = 0, 0
     grabbed_item_paths = []
 
     folders = client_session.list_folders()
@@ -154,7 +154,7 @@ def synchronize_with_server(config, client_session):
         print(f"  Updating folder {folder_name}")
 
         def process(item_ids):
-            nonlocal new_items, grabbed_item_paths
+            nonlocal new_items, updated_items, grabbed_item_paths
             if len(item_ids) > 0:
                 item_contents = client_session.get_stream_items_contents(item_ids=item_ids)
                 for item_content in item_contents.items:
@@ -177,13 +177,24 @@ def synchronize_with_server(config, client_session):
 
                     json_path = config.json_root / f"{ sha256(item_json["id"].encode("utf-8")).hexdigest() }.json"
                     grabbed_item_paths.append(json_path)
+
+                    write_files, updating = False, False
                     if not json_path.exists():
+                        write_files = True
+                        new_items += 1
+                    else:
+                        old_item_json = json.load(json_path.open("r"))
+                        if item_json["updated"] > old_item_json["updated"]:
+                            write_files, updating = True, True
+                            updated_items += 1
+
+                    if write_files:
                         # write JSON
                         with json_path.open("w") as f:
                             json.dump(item_json, f)
                         # write HTML
-                        generate_html_for_item(config, item_json)
-                        new_items += 1
+                        generate_html_for_item(config, item_json, regenerate=updating)
+
 
         continuation = None
         while continuation != '':
@@ -203,13 +214,13 @@ def synchronize_with_server(config, client_session):
             item_path.unlink()
             removed_items += 1
     
-    print(f"Synchronization successful ({new_items} new items, {removed_items} removed)")
+    print(f"Synchronization successful ({new_items} new items, {updated_items} updated, {removed_items} removed)")
     config.update_lock.unlink()
 
-def generate_html_for_item(config, item_json):
+def generate_html_for_item(config, item_json, regenerate=False):
     # Write HTML file for a JSON object
     html_path = config.html_root / item_json["html_path"]
-    if html_path.exists():
+    if html_path.exists() and not regenerate:
         print(f"WARNING: a file already exist for {html_path}. Either the feed has duplicate entries, or something has gone terribly wrong.")
     else:
         with html_path.open("w") as f: