feat: add daemon mode

README.md

@@ -8,7 +8,9 @@
 
 ### Updating with the server
 
-Call `feather update` to synchronize all local data with the server (read items, new items from the server, etc.).
+Call `feather sync` to synchronize all local data with the server (read items, new items from the server, etc.).
+
+`feather daemon`
 
 ### Configuration
 
@@ -37,7 +39,8 @@ After changing the configuration, you can call `feather regenerate` to regenerat
 ## TODO
 
 - [ ] Write documentation
-- [ ] Perform mark-as-read operation more often than sync (inotify, daemon, etc.)
+- [x] Perform mark-as-read operation more often than sync (inotify, daemon, etc.)
+    - [ ] inotify might still be nice
 - [x] Make HTML filename configurable
 - [x] Make HTML template configurable
 - [ ] Nested categories

config.default.toml

@@ -64,3 +64,10 @@ timezone = "Etc/UTC"
 # This will be used in filenames so it's a good idea to use something sortable...
 # Can be set through the environment variable DATETIME_FORMAT.
 format = "%Y-%m-%d %H:%M"
+
+[daemon]
+# When running in daemon mode, feather will download changes from the server (new items, items read state) every <sync_down_every> seconds.
+sync_down_every = 900
+# When running in daemon mode, feather will upload local changes to the server (read items) every <sync_up_every> seconds.
+sync_up_every = 60
+

main.py

@@ -5,6 +5,7 @@ import google_reader
 import tomllib
 import sys
 import argparse
+import asyncio
 from datetime import datetime
 from zoneinfo import ZoneInfo
 from pathlib import Path
@@ -54,6 +55,8 @@ class Config:
         self.item_filename_template: Template = Template(str(get_config("html", "filename_template")), autoescape=False)
         self.max_filename_length: int = int(get_config("html", "max_filename_length"))
         self.filename_translation = str.maketrans(get_config("html", "filename_replacement"))
+        self.daemon_sync_up_every: int = int(get_config("daemon", "sync_up_every"))
+        self.daemon_sync_down_every: int = int(get_config("daemon", "sync_down_every"))
 
         # Computed config fields
         self.update_lock = self.json_root / "update.lock"
@@ -260,6 +263,20 @@ def synchronize_remote_changes(config, client_session):
     synchronize_with_server(config, client_session)
     remove_empty_html_directories(config)
 
+async def daemon_sync_up_loop(config, client_session):
+    while True:
+        synchronize_local_changes(config, client_session)
+        await asyncio.sleep(config.daemon_sync_up_every)
+async def daemon_sync_down_loop(config, client_session):
+    while True:
+        synchronize_remote_changes(config, client_session)
+        await asyncio.sleep(config.daemon_sync_down_every)
+async def daemon(config, client_session):
+    print(f"Started in daemon mode; changes will be downloaded from the server every {config.daemon_sync_down_every}s and uploaded every {config.daemon_sync_up_every}s")
+    async with asyncio.TaskGroup() as tg:
+        tg.create_task(daemon_sync_up_loop(config, client_session))
+        tg.create_task(daemon_sync_down_loop(config, client_session))
+
 def regenerate_files(config):
     for json_path in config.json_root.glob("*.json"):
         item_json = json.load(json_path.open("r"))
@@ -279,8 +296,8 @@ def main():
         description="file-based RSS reader"
     )
     parser.add_argument(
-        "action", choices=("sync", "sync-up", "sync-down", "regenerate"),
-        help="sync: perform a full synchronization with the server; sync-up: only synchronize local changes to the server (e.g. items read locally); sync-down: only synchronize remote change from the server (e.g. new items or items read from another device); regenerate: regenerate all HTML files from the local data"
+        "action", choices=("sync", "sync-up", "sync-down", "daemon", "regenerate"),
+        help="sync: perform a full synchronization with the server; sync-up: only synchronize local changes to the server (e.g. items read locally); sync-down: only synchronize remote change from the server (e.g. new items or items read from another device); daemon: start in daemon mode (will keep performing synchronizations periodically until process is stopped); regenerate: regenerate all HTML files from the local data"
     )
     args = parser.parse_args()
 
@@ -294,6 +311,12 @@ def main():
     elif args.action == "sync-down":
         client_session = ClientSession(config)
         synchronize_remote_changes(config, client_session)
+    elif args.action == "daemon":
+        client_session = ClientSession(config)
+        try:
+            asyncio.run(daemon(config, client_session))
+        except KeyboardInterrupt:
+            pass
     elif args.action == "regenerate":
         regenerate_files(config)