feat: add interactive systemd service generator (Bounty #448)

cortex/cli.py

@@ -1521,6 +1521,18 @@ def progress_callback(current: int, total: int, step: InstallationStep) -> None:
                 console.print(f"Error: {result.error_message}", style="red")
             return 1
 
+    def systemd(self) -> int:
+        """Interactive systemd service generator."""
+        try:
+            from cortex.systemd_helper import SystemdHelper
+
+            helper = SystemdHelper()
+            helper.run()
+            return 0
+        except Exception as e:
+            self._print_error(f"Systemd Helper failed: {e}")
+            return 1
+
     # --------------------------
 
 
@@ -1553,6 +1565,7 @@ def show_rich_help():
     table.add_row("cache stats", "Show LLM cache statistics")
     table.add_row("stack <name>", "Install the stack")
     table.add_row("sandbox <cmd>", "Test packages in Docker sandbox")
+    table.add_row("systemd", "Generate systemd service files")
     table.add_row("doctor", "System health check")
 
     console.print(table)
@@ -1857,6 +1870,11 @@ def main():
     env_template_apply_parser.add_argument(
         "--encrypt-keys", help="Comma-separated list of keys to encrypt"
     )
+
+    # Systemd helper
+    subparsers.add_parser(
+        "systemd", aliases=["service-gen"], help="Generate systemd service files"
+    )
     # --------------------------
 
     args = parser.parse_args()
@@ -1903,6 +1921,8 @@ def main():
             return 1
         elif args.command == "env":
             return cli.env(args)
+        elif args.command in ["systemd", "service-gen"]:
+            return cli.systemd()
         else:
             parser.print_help()
             return 1

cortex/systemd_helper.py

@@ -0,0 +1,110 @@
+import os
+import getpass
+from rich.prompt import Prompt, Confirm
+from cortex.branding import console, cx_header, cx_print
+
+class SystemdHelper:
+    """
+    Interactive helper to generate systemd service files.
+    """
+
+    def __init__(self):
+        self.service_name = ""
+        self.description = ""
+        self.exec_start = ""
+        self.working_dir = ""
+        self.user = ""
+        self.restart_policy = "always"
+
+    def run(self):
+        """Interactive wizard."""
+        cx_header("Systemd Service Generator")
+
+        console.print("[dim]This wizard will help you create a systemd service file.[/dim]\n")
+
+        # 1. Service Name
+        self.service_name = Prompt.ask(
+            "[bold cyan]Service Name[/bold cyan] (e.g. myserver)", 
+            default="myservice"
+        )
+        if not self.service_name.endswith(".service"):
+            filename = f"{self.service_name}.service"
+        else:
+            filename = self.service_name
+            self.service_name = filename[:-8]
+
+        # 2. Description
+        self.description = Prompt.ask(
+            "[bold cyan]Description[/bold cyan]", 
+            default=f"Service for {self.service_name}"
+        )
+
+        # 3. ExecStart
+        self.exec_start = Prompt.ask(
+            "[bold cyan]Command to run (ExecStart)[/bold cyan]",
+            default="/usr/bin/python3 /path/to/app.py"
+        )
+
+        # 4. Working Directory
+        current_dir = os.getcwd()
+        self.working_dir = Prompt.ask(
+            "[bold cyan]Working Directory[/bold cyan]", 
+            default=current_dir
+        )
+
+        # 5. User
+        current_user = getpass.getuser()
+        self.user = Prompt.ask(
+            "[bold cyan]Run as User[/bold cyan]", 
+            default=current_user
+        )
+
+        # 6. Restart Policy
+        self.restart_policy = Prompt.ask(
+            "[bold cyan]Restart Policy[/bold cyan]", 
+            choices=["always", "on-failure", "no"], 
+            default="always"
+        )
+
+        # Generate Content
+        content = self.generate_service_content()
+
+        cx_header("Generated Content")
+        console.print(content, style="dim")
+        console.print()
+
+        # Save?
+        if Confirm.ask(f"Save to [bold green]{filename}[/bold green] in current directory?"):
+            self.save_file(filename, content)
+
+            cx_print(f"File saved: {filename}", "success")
+            console.print(f"\n[bold]Next Steps:[/bold]")
+            console.print(f"1. Move to systemd: [cyan]sudo mv {filename} /etc/systemd/system/[/cyan]")
+            console.print(f"2. Reload daemon:   [cyan]sudo systemctl daemon-reload[/cyan]")
+            console.print(f"3. Enable service:  [cyan]sudo systemctl enable {self.service_name}[/cyan]")
+            console.print(f"4. Start service:   [cyan]sudo systemctl start {self.service_name}[/cyan]")
+
+    def generate_service_content(self) -> str:
+        """Generates the .service file content."""
+        return f"""[Unit]
+Description={self.description}
+After=network.target
+
+[Service]
+Type=simple
+User={self.user}
+WorkingDirectory={self.working_dir}
+ExecStart={self.exec_start}
+Restart={self.restart_policy}
+
+[Install]
+WantedBy=multi-user.target
+"""
+
+    def save_file(self, filename: str, content: str):
+        """Saves content to file."""
+        try:
+            with open(filename, "w") as f:
+                f.write(content)
+        except Exception as e:
+            cx_print(f"Error saving file: {e}", "error")