From f46620d94d6a76e4b3f6f8cb41c89994879482ec Mon Sep 17 00:00:00 2001
From: Olivier Gayot <olivier.gayot@sigexec.com>
Date: Sun, 14 May 2023 19:04:25 +0200
Subject: Allow to specify the profiles file to use

Signed-off-by: Olivier Gayot <olivier.gayot@sigexec.com>
---
 monitor_menu/__main__.py | 36 ++++++++++++++++++++++++++++--------
 1 file changed, 28 insertions(+), 8 deletions(-)

(limited to 'monitor_menu')

diff --git a/monitor_menu/__main__.py b/monitor_menu/__main__.py
index 91942e2..87719e7 100644
--- a/monitor_menu/__main__.py
+++ b/monitor_menu/__main__.py
@@ -5,7 +5,7 @@ import dataclasses
 import enum
 import json
 import logging
-from os.path import expanduser
+import pathlib
 import subprocess
 from typing import Any
 import yaml
@@ -151,10 +151,35 @@ class MonitorMenu:
                 raise NoMatchingProfile from None
 
 
+def load_profiles_config(path: pathlib.Path | None):
+    if path is not None:
+        with path.open() as fh:
+            if path.suffix == ".json":
+                return json.load(fh)
+            # Expect YAML by default
+            return yaml.safe_load(fh)
+
+    # Try monitor-profiles.yaml and revert to monitor-profiles.json if the
+    # first one does not exist.
+    try:
+        with pathlib.Path("~/.config/monitor-profiles.yaml").expanduser().open() as fh:
+            return yaml.safe_load(fh)
+    except FileNotFoundError:
+        with pathlib.Path("~/.config/monitor-profiles.json").expanduser().open() as fh:
+            return json.load(fh)
+
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("--log-level", "--loglevel", type=LogLevel, default="info")
-    parser.add_argument("--graphical-server", choices=("wayland", "xorg"))
+    parser.add_argument("--graphical-server", choices=("wayland", "xorg"), type=GraphicalServer)
+    parser.add_argument(
+            "--profiles-config",
+            metavar="PATH",
+            type=pathlib.Path,
+            help="Configuration file to use."
+            " By default $HOME/.config/monitor-profiles.yaml (preferred)"
+            " or $HOME/.config/monitor-profiles.json")
     subparser = parser.add_subparsers(dest="command")
     run_parser = subparser.add_parser("run")
     run_parser.add_argument("--apply-exit", action="store_true")
@@ -166,12 +191,7 @@ def main():
     args = parser.parse_args()
     logging.basicConfig(level=args.log_level.numerical_level)
 
-    try:
-        with open(expanduser("~/.config/monitor-profiles.yaml")) as fh:
-            data = yaml.safe_load(fh)
-    except FileNotFoundError:
-        with open(expanduser("~/.config/monitor-profiles.json")) as fh:
-            data = json.load(fh)
+    data = load_profiles_config(args.profiles_config)
 
     profiles = [Profile.from_json_dict(item) for item in data]
 
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