Refactor CLI to use subcommands for better semantics

Co-authored-by: tranch <5999732+tranch@users.noreply.github.com>

4 files changed, 69 insertions, 23 deletions

diff --git a/README.md b/README.md
index 53f0122..390f529 100644
--- a/README.md
+++ b/README.md
@@ -17,23 +17,38 @@ A local mirror version of the Decky Installer for Steam Deck. This repository al
 2. Place the downloaded file in a convenient location on your Steam Deck.
 3. Run the script or launch the desktop file to start the Decky Installer.
 
+### Command Structure
+
+The `decky_client.py` script uses subcommands for different operations:
+
+```bash
+# Install a plugin (default operation)
+python3 decky_client.py install [options]
+
+# Configure custom store URL
+python3 decky_client.py configure-store <url>
+
+# Get configured store URL
+python3 decky_client.py get-store
+```
+
 ### Custom Store Configuration
 
 The installer now supports configuring custom plugin store URLs:
 
 #### Configure a Custom Store URL
 ```bash
-python3 decky_client.py --configure-store "https://your-custom-store.com/plugins"
+python3 decky_client.py configure-store "https://your-custom-store.com/plugins"
 ```
 
 #### Get the Currently Configured Store URL
 ```bash
-python3 decky_client.py --get-store
+python3 decky_client.py get-store
 ```
 
 #### Install from a Custom Store
 ```bash
-python3 decky_client.py --target-id 42 --store-url "https://your-custom-store.com/plugins"
+python3 decky_client.py install --target-id 42 --store-url "https://your-custom-store.com/plugins"
 ```
 
 ## Mock Server for Testing
@@ -47,7 +62,7 @@ python3 mock_decky_server.py --auto-confirm
 
 ### Test with the Mock Server
 ```bash
-python3 decky_client.py --target-id 42
+python3 decky_client.py install --target-id 42
 ```
 
 The mock server implements the following Decky Loader backend routes:
diff --git a/decky_client.py b/decky_client.py
index 8d61f49..f1ac2b6 100644
--- a/decky_client.py
+++ b/decky_client.py
@@ -299,26 +299,57 @@ async def get_store_url() -> str:
 
 
 if __name__ == "__main__":
-    parser = argparse.ArgumentParser(description="Decky Plugin Installer")
-    parser.add_argument("--store-url", default="http://127.0.0.1:1337/plugins",
-                        help="Plugin store URL to fetch plugins from")
-    parser.add_argument("--target-id", type=int, default=42,
-                        help="Plugin ID to install")
-    parser.add_argument("--configure-store", metavar="URL",
-                        help="Configure custom store URL in Decky settings")
-    parser.add_argument("--get-store", action="store_true",
-                        help="Get the configured custom store URL")
+    parser = argparse.ArgumentParser(
+        description="Decky Loader Client - Manage plugins and settings",
+        formatter_class=argparse.RawDescriptionHelpFormatter
+    )
+    subparsers = parser.add_subparsers(dest="command", help="Available commands")
+    
+    # Install subcommand
+    install_parser = subparsers.add_parser(
+        "install",
+        help="Install a plugin from the store"
+    )
+    install_parser.add_argument(
+        "--store-url",
+        default="http://127.0.0.1:1337/plugins",
+        help="Plugin store URL to fetch plugins from (default: http://127.0.0.1:1337/plugins)"
+    )
+    install_parser.add_argument(
+        "--target-id",
+        type=int,
+        default=42,
+        help="Plugin ID to install (default: 42)"
+    )
+    
+    # Configure store subcommand
+    config_parser = subparsers.add_parser(
+        "configure-store",
+        help="Configure custom store URL in Decky settings"
+    )
+    config_parser.add_argument(
+        "url",
+        help="Custom store URL to configure"
+    )
+    
+    # Get store subcommand
+    subparsers.add_parser(
+        "get-store",
+        help="Get the configured custom store URL"
+    )
+    
     args = parser.parse_args()
     
-    if args.configure_store:
-        # Configure store URL
-        asyncio.run(configure_store_url(args.configure_store))
-    elif args.get_store:
-        # Get configured store URL
-        asyncio.run(get_store_url())
-    else:
-        # Run installer - only pass expected parameters
+    # Execute based on subcommand
+    if args.command == "install":
         asyncio.run(run_installer(
             target_id=args.target_id,
             store_url=args.store_url
         ))
+    elif args.command == "configure-store":
+        asyncio.run(configure_store_url(args.url))
+    elif args.command == "get-store":
+        asyncio.run(get_store_url())
+    else:
+        parser.print_help()
+        sys.exit(1)
diff --git a/test.sh b/test.sh
index 53b5ab6..45f6859 100755
--- a/test.sh
+++ b/test.sh
@@ -8,4 +8,4 @@ server_pid=$!
 echo "Mock Decky Server is running. Logs are being written to /tmp/mock_decky_server.log"
 trap "kill $server_pid" EXIT
 
-python3 decky_client.py
+python3 decky_client.py install
diff --git a/user_install_script.sh b/user_install_script.sh
index 49acea2..5fd1e84 100644
--- a/user_install_script.sh
+++ b/user_install_script.sh
@@ -37,7 +37,7 @@ fi
 # Download and run decky plugin installer helper (mirror-hosted).
 plugin_installer="/tmp/decky_client.py"
 if curl -fsSL "https://${DECKY_MIRROR_HOST}/AeroCore-IO/decky-installer/releases/latest/download/decky_client.py" -o "${plugin_installer}"; then
-  python3 "${plugin_installer}" \
+  python3 "${plugin_installer}" install \
     --store-url "https://${DECKY_PLUGIN_MIRROR_HOST}/plugins" \
     --target-id "${DECKY_PLUGIN_TARGET_ID}"
 else