feat: sims cli as python package

Makefile

@@ -1,2 +1,15 @@
 run:
 	python -m sims.main --config ./example-stylix-dev.yaml
+
+# Talk to the running sims daemon over DBus.
+# Usage: make cli list
+#        make cli finder
+#        make cli screenrec stop
+#        make cli ARGS="list --json"   # for flags (make eats leading dashes)
+ifeq (cli,$(firstword $(MAKECMDGOALS)))
+  CLI_ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS))
+  $(eval $(CLI_ARGS):;@:)
+endif
+
+cli:
+	@python -m sims.cli $(if $(ARGS),$(ARGS),$(CLI_ARGS))

flake.nix

@@ -32,13 +32,9 @@
       {
         formatter = pkgs.nixfmt-rfc-style;
         devShells.default = pkgs.callPackage ./nix/shell.nix { inherit pkgs; };
-        packages = {
+        packages = rec {
           default = pkgs.callPackage ./nix/derivation.nix { inherit (pkgs) lib python3Packages; };
-          sims-cli = pkgs.writeShellApplication {
+          sims = default;
-            name = "sims-cli";
-            runtimeInputs = [ pkgs.dbus ];
-            text = builtins.readFile ./scripts/sims-cli.sh;
-          };
         };
         apps.default = {
           type = "app";

nix/derivation.nix

@@ -15,6 +15,7 @@
   notmuch,
   khal,
   emacs,
+  dbus,
   ...
 }:
 
@@ -64,6 +65,8 @@ python3Packages.buildPythonApplication {
     mkdir -p $out/bin
     cp scripts/launcher.py $out/bin/sims
     chmod +x $out/bin/sims
+    cp scripts/cli_launcher.py $out/bin/sims-cli
+    chmod +x $out/bin/sims-cli
 
 
     runHook postInstall
@@ -71,7 +74,7 @@ python3Packages.buildPythonApplication {
 
   preFixup = ''
     makeWrapperArgs+=("''${gappsWrapperArgs[@]}")
-    makeWrapperArgs+=(--prefix PATH : ${lib.makeBinPath [ khal notmuch emacs ]})
+    makeWrapperArgs+=(--prefix PATH : ${lib.makeBinPath [ khal notmuch emacs dbus ]})
   '';
 
   passthru = {

scripts/cli_launcher.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+import os
+import sys
+
+script_dir = os.path.dirname(os.path.abspath(__file__))
+site_packages_dir = os.path.join(
+    script_dir,
+    os.pardir,
+    "lib",
+    f"python{sys.version_info.major}.{sys.version_info.minor}",
+    "site-packages",
+)
+
+if site_packages_dir not in sys.path:
+    sys.path.insert(0, site_packages_dir)
+
+from sims.cli import main
+
+sys.argv[0] = os.path.join(script_dir, os.path.basename(__file__))
+sys.exit(main())

scripts/sims-cli.sh

@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-# sims-cli — talk to the running `sims` status bar over DBus.
-set -euo pipefail
-
-DEST=org.Fabric.fabric.sims
-OBJ=/org/Fabric/fabric
-IFACE=org.Fabric.fabric
-
-invoke() {
-    dbus-send --session --print-reply --dest="$DEST" "$OBJ" \
-        "$IFACE.InvokeAction" "string:$1" "array:string:" >/dev/null
-}
-
-list_actions() {
-    dbus-send --session --print-reply --dest="$DEST" "$OBJ" \
-        org.freedesktop.DBus.Properties.Get \
-        "string:$IFACE" string:Actions
-}
-
-usage() {
-    cat <<'EOF' >&2
-usage: sims-cli <command> [args]
-  finder                       open window finder
-  apps                         open application launcher
-  power                        open power menu
-  screenshot                   open screenshot menu
-  notmuch-refresh              refresh unread mail count
-  screenrec menu               open screenrec menu (auto-detects state)
-  screenrec start-monitor      start recording the focused monitor
-  screenrec start-region       start recording a slurp-selected region
-  screenrec stop               stop active recording
-  list                         list registered actions
-EOF
-    exit 2
-}
-
-case "${1:-}" in
-    finder)          invoke open-finder ;;
-    apps)            invoke open-app-launcher ;;
-    power)           invoke open-power-menu ;;
-    screenshot)      invoke open-screenshot-menu ;;
-    notmuch-refresh) invoke refresh-notmuch ;;
-    screenrec)
-        case "${2:-}" in
-            menu)          invoke open-screenrec-menu ;;
-            start-monitor) invoke screenrec-start-monitor ;;
-            start-region)  invoke screenrec-start-region ;;
-            stop)          invoke screenrec-stop ;;
-            *) usage ;;
-        esac ;;
-    list)            list_actions ;;
-    *)               usage ;;
-esac

sims/cli.py

@@ -0,0 +1,132 @@
+"""sims-cli — talk to the running sims status bar over DBus."""
+from __future__ import annotations
+
+import argparse
+import json
+import re
+import subprocess
+import sys
+from dataclasses import dataclass
+from typing import Callable
+
+DEST = "org.Fabric.fabric.sims"
+OBJ = "/org/Fabric/fabric"
+IFACE = "org.Fabric.fabric"
+
+
+def _dbus_send(*args: str) -> str:
+    proc = subprocess.run(
+        ["dbus-send", "--session", "--print-reply", f"--dest={DEST}", OBJ, *args],
+        capture_output=True,
+        text=True,
+    )
+    if proc.returncode != 0:
+        sys.stderr.write(proc.stderr)
+        sys.exit(proc.returncode)
+    return proc.stdout
+
+
+def invoke_action(action: str) -> None:
+    _dbus_send(f"{IFACE}.InvokeAction", f"string:{action}", "array:string:")
+
+
+_ACTION_RE = re.compile(r'dict entry\(\s*string "([^"]+)"')
+
+
+def list_actions() -> list[str]:
+    out = _dbus_send(
+        "org.freedesktop.DBus.Properties.Get",
+        f"string:{IFACE}",
+        "string:Actions",
+    )
+    return _ACTION_RE.findall(out)
+
+
+@dataclass
+class Command:
+    name: str
+    help: str
+    run: Callable[[argparse.Namespace], None]
+
+
+def _action(name: str) -> Callable[[argparse.Namespace], None]:
+    return lambda _ns: invoke_action(name)
+
+
+COMMANDS: list[Command] = [
+    Command("finder", "open window finder", _action("open-finder")),
+    Command("apps", "open application launcher", _action("open-app-launcher")),
+    Command("power", "open power menu", _action("open-power-menu")),
+    Command("screenshot", "open screenshot menu", _action("open-screenshot-menu")),
+    Command("notmuch-refresh", "refresh unread mail count", _action("refresh-notmuch")),
+]
+
+
+def _cmd_screenrec(ns: argparse.Namespace) -> None:
+    mapping = {
+        "menu": "open-screenrec-menu",
+        "start-monitor": "screenrec-start-monitor",
+        "start-region": "screenrec-start-region",
+        "stop": "screenrec-stop",
+    }
+    invoke_action(mapping[ns.screenrec_cmd])
+
+
+def _cmd_list(ns: argparse.Namespace) -> None:
+    actions = list_actions()
+    if ns.json:
+        json.dump(actions, sys.stdout, indent=2)
+        sys.stdout.write("\n")
+    else:
+        for a in actions:
+            print(a)
+
+
+def _cmd_invoke(ns: argparse.Namespace) -> None:
+    invoke_action(ns.action)
+
+
+def build_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(
+        prog="sims-cli",
+        description="Talk to the running sims status bar over DBus.",
+    )
+    sub = parser.add_subparsers(dest="cmd", required=True, metavar="COMMAND")
+
+    for cmd in COMMANDS:
+        p = sub.add_parser(cmd.name, help=cmd.help)
+        p.set_defaults(func=cmd.run)
+
+    rec = sub.add_parser("screenrec", help="screen recording controls")
+    rec_sub = rec.add_subparsers(dest="screenrec_cmd", required=True, metavar="ACTION")
+    for sub_name, sub_help in [
+        ("menu", "open screenrec menu (auto-detects state)"),
+        ("start-monitor", "start recording the focused monitor"),
+        ("start-region", "start recording a slurp-selected region"),
+        ("stop", "stop active recording"),
+    ]:
+        rec_sub.add_parser(sub_name, help=sub_help)
+    rec.set_defaults(func=_cmd_screenrec)
+
+    lst = sub.add_parser("list", help="list registered actions")
+    lst.add_argument("--json", action="store_true", help="emit JSON array")
+    lst.set_defaults(func=_cmd_list)
+
+    inv = sub.add_parser(
+        "invoke",
+        help="invoke a raw action by name (escape hatch for actions without a dedicated subcommand)",
+    )
+    inv.add_argument("action", help="dbus action name, e.g. open-finder")
+    inv.set_defaults(func=_cmd_invoke)
+
+    return parser
+
+
+def main() -> None:
+    parser = build_parser()
+    ns = parser.parse_args()
+    ns.func(ns)
+
+
+if __name__ == "__main__":
+    main()