feat(install): add autostart functionality for rewind daemon

rewind/autostart.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+import os
+import platform
+import shutil
+import subprocess
+
+from pathlib import Path
+
+APP_NAME = "rewind-daemon"
+
+def _find_executable():
+    path = shutil.which(APP_NAME)
+    if not path:
+        raise RuntimeError(f"{APP_NAME} not found in PATH")
+    return path
+
+def _run(cmd: list[str]):
+    result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+    if result.returncode != 0:
+        raise RuntimeError(f"Command failed: {' '.join(cmd)}\n{result.stderr}")
+    return result
+
+def _install_linux(program_path: str):
+    systemd_dir = Path.home() / ".config/systemd/user"
+    systemd_dir.mkdir(parents=True, exist_ok=True)
+
+    obs_service = systemd_dir / "obs.service"
+    daemon_service = systemd_dir / "rewind-daemon.service"
+
+    if obs_service.exists():
+        print("obs.service already exists, skipping creation")
+    else:
+        obs_service.write_text("""[Unit]
+Description=OBS Studio
+After=graphical-session.target
+Wants=graphical-session.target
+
+[Service]
+ExecStart=obs --minimize-to-tray
+Restart=on-failure
+RestartSec=3
+
+[Install]
+WantedBy=default.target
+""")
+
+    if daemon_service.exists():
+        print("rewind-daemon.service already exists, skipping creation")
+    else:
+        daemon_service.write_text(f"""[Unit]
+Description=Rewind Daemon
+After=obs.service
+Requires=obs.service
+
+[Service]
+ExecStart={program_path}
+Restart=always
+RestartSec=5
+Environment=PYTHONUNBUFFERED=1
+
+[Install]
+WantedBy=default.target
+""")
+
+    _run(["systemctl", "--user", "daemon-reload"])
+
+    _run(["systemctl", "--user", "enable", "obs.service"])
+    _run(["systemctl", "--user", "enable", "rewind-daemon.service"])
+
+    _run(["systemctl", "--user", "start", "obs.service"])
+    _run(["systemctl", "--user", "start", "rewind-daemon.service"])
+
+    print("Installed and started OBS + rewind-daemon via systemd")
+
+def install():
+    system = platform.system()
+    program_path = _find_executable()
+
+    if system == "Linux":
+        _install_linux(program_path)
+    else:
+        raise RuntimeError(f"Autostart on OS {system} not compatible or not implemented")
+
+if __name__ == "__main__":
+    install()

rewind/cli.py

@@ -3,6 +3,7 @@ import sys
 import argparse
 
 from rewind.core import clip, mark, save, print_markers
+from rewind.autostart import install
 
 def build_clip_parser(subparsers: argparse._SubParsersAction) -> None:
     clip_parser = subparsers.add_parser("clip", help="Clips the last 'x' seconds")
@@ -41,6 +42,13 @@ def build_mark_parser(subparsers: argparse._SubParsersAction) -> None:
 def build_list_parser(subparsers: argparse._SubParsersAction) -> None:
     list_parser = subparsers.add_parser("list", help="List all markers in the recording")
 
+def build_install_parser(subparsers: argparse._SubParsersAction):
+    subparsers.add_parser(
+        "install",
+        help="Enable background recording daemon",
+        description="Install and enable the rewind daemon using system autostart."
+    )
+
 def build_parser() -> argparse.ArgumentParser:
     parser = argparse.ArgumentParser(
         prog="rewind",
@@ -53,6 +61,7 @@ def build_parser() -> argparse.ArgumentParser:
     build_mark_parser(sub)
     build_list_parser(sub)
     build_save_parser(sub)
+    build_install_parser(sub)
 
     return parser
 
@@ -69,6 +78,8 @@ def main(argv=None) -> int:
             print_markers()
         elif args.command == "save":
             save(args.start, args.end)
+        elif args.command == "install":
+            install()
         else:
             parser.error("Unknown command")
     except Exception as e: