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decky-loader/backend/decky_loader/plugin/imports/decky.py
T
2024-06-13 17:47:53 -04:00

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Python

"""
This module exposes various constants and helpers useful for decky plugins.
* Plugin's settings and configurations should be stored under `DECKY_PLUGIN_SETTINGS_DIR`.
* Plugin's runtime data should be stored under `DECKY_PLUGIN_RUNTIME_DIR`.
* Plugin's persistent log files should be stored under `DECKY_PLUGIN_LOG_DIR`.
Avoid writing outside of `DECKY_HOME`, storing under the suggested paths is strongly recommended.
Some basic migration helpers are available: `migrate_any`, `migrate_settings`, `migrate_runtime`, `migrate_logs`.
A logging facility `logger` is available which writes to the recommended location.
"""
__version__ = '1.0.0'
import os
import subprocess
import logging
import time
from typing import Any
"""
Constants
"""
HOME: str = os.getenv("HOME", default="")
"""
The home directory of the effective user running the process.
Environment variable: `HOME`.
If `root` was specified in the plugin's flags it will be `/root` otherwise the user whose home decky resides in.
e.g.: `/home/deck`
"""
USER: str = os.getenv("USER", default="")
"""
The effective username running the process.
Environment variable: `USER`.
It would be `root` if `root` was specified in the plugin's flags otherwise the user whose home decky resides in.
e.g.: `deck`
"""
DECKY_VERSION: str = os.getenv("DECKY_VERSION", default="")
"""
The version of the decky loader.
Environment variable: `DECKY_VERSION`.
e.g.: `v2.5.0-pre1`
"""
DECKY_USER: str = os.getenv("DECKY_USER", default="")
"""
The user whose home decky resides in.
Environment variable: `DECKY_USER`.
e.g.: `deck`
"""
DECKY_USER_HOME: str = os.getenv("DECKY_USER_HOME", default="")
"""
The home of the user where decky resides in.
Environment variable: `DECKY_USER_HOME`.
e.g.: `/home/deck`
"""
DECKY_HOME: str = os.getenv("DECKY_HOME", default="")
"""
The root of the decky folder.
Environment variable: `DECKY_HOME`.
e.g.: `/home/deck/homebrew`
"""
DECKY_PLUGIN_SETTINGS_DIR: str = os.getenv(
"DECKY_PLUGIN_SETTINGS_DIR", default="")
"""
The recommended path in which to store configuration files (created automatically).
Environment variable: `DECKY_PLUGIN_SETTINGS_DIR`.
e.g.: `/home/deck/homebrew/settings/decky-plugin-template`
"""
DECKY_PLUGIN_RUNTIME_DIR: str = os.getenv(
"DECKY_PLUGIN_RUNTIME_DIR", default="")
"""
The recommended path in which to store runtime data (created automatically).
Environment variable: `DECKY_PLUGIN_RUNTIME_DIR`.
e.g.: `/home/deck/homebrew/data/decky-plugin-template`
"""
DECKY_PLUGIN_LOG_DIR: str = os.getenv("DECKY_PLUGIN_LOG_DIR", default="")
"""
The recommended path in which to store persistent logs (created automatically).
Environment variable: `DECKY_PLUGIN_LOG_DIR`.
e.g.: `/home/deck/homebrew/logs/decky-plugin-template`
"""
DECKY_PLUGIN_DIR: str = os.getenv("DECKY_PLUGIN_DIR", default="")
"""
The root of the plugin's directory.
Environment variable: `DECKY_PLUGIN_DIR`.
e.g.: `/home/deck/homebrew/plugins/decky-plugin-template`
"""
DECKY_PLUGIN_NAME: str = os.getenv("DECKY_PLUGIN_NAME", default="")
"""
The name of the plugin as specified in the 'plugin.json'.
Environment variable: `DECKY_PLUGIN_NAME`.
e.g.: `Example Plugin`
"""
DECKY_PLUGIN_VERSION: str = os.getenv("DECKY_PLUGIN_VERSION", default="")
"""
The version of the plugin as specified in the 'package.json'.
Environment variable: `DECKY_PLUGIN_VERSION`.
e.g.: `0.0.1`
"""
DECKY_PLUGIN_AUTHOR: str = os.getenv("DECKY_PLUGIN_AUTHOR", default="")
"""
The author of the plugin as specified in the 'plugin.json'.
Environment variable: `DECKY_PLUGIN_AUTHOR`.
e.g.: `John Doe`
"""
__cur_time = time.strftime("%Y-%m-%d %H.%M.%S")
DECKY_PLUGIN_LOG: str = os.path.join(DECKY_PLUGIN_LOG_DIR, f"{__cur_time}.log")
"""
The path to the plugin's main logfile.
Environment variable: `DECKY_PLUGIN_LOG`.
e.g.: `/home/deck/homebrew/logs/decky-plugin-template/plugin.log`
"""
"""
Migration helpers
"""
def migrate_any(target_dir: str, *files_or_directories: str) -> dict[str, str]:
"""
Migrate files and directories to a new location and remove old locations.
Specified files will be migrated to `target_dir`.
Specified directories will have their contents recursively migrated to `target_dir`.
Returns the mapping of old -> new location.
"""
file_map: dict[str, str] = {}
for f in files_or_directories:
if not os.path.exists(f):
file_map[f] = ""
continue
if os.path.isdir(f):
src_dir = f
src_file = "."
file_map[f] = target_dir
else:
src_dir = os.path.dirname(f)
src_file = os.path.basename(f)
file_map[f] = os.path.join(target_dir, src_file)
subprocess.run(["sh", "-c", "mkdir -p \"$3\"; tar -cf - -C \"$1\" \"$2\" | tar -xf - -C \"$3\" && rm -rf \"$4\"",
"_", src_dir, src_file, target_dir, f])
return file_map
def migrate_settings(*files_or_directories: str) -> dict[str, str]:
"""
Migrate files and directories relating to plugin settings to the recommended location and remove old locations.
Specified files will be migrated to `DECKY_PLUGIN_SETTINGS_DIR`.
Specified directories will have their contents recursively migrated to `DECKY_PLUGIN_SETTINGS_DIR`.
Returns the mapping of old -> new location.
"""
return migrate_any(DECKY_PLUGIN_SETTINGS_DIR, *files_or_directories)
def migrate_runtime(*files_or_directories: str) -> dict[str, str]:
"""
Migrate files and directories relating to plugin runtime data to the recommended location and remove old locations
Specified files will be migrated to `DECKY_PLUGIN_RUNTIME_DIR`.
Specified directories will have their contents recursively migrated to `DECKY_PLUGIN_RUNTIME_DIR`.
Returns the mapping of old -> new location.
"""
return migrate_any(DECKY_PLUGIN_RUNTIME_DIR, *files_or_directories)
def migrate_logs(*files_or_directories: str) -> dict[str, str]:
"""
Migrate files and directories relating to plugin logs to the recommended location and remove old locations.
Specified files will be migrated to `DECKY_PLUGIN_LOG_DIR`.
Specified directories will have their contents recursively migrated to `DECKY_PLUGIN_LOG_DIR`.
Returns the mapping of old -> new location.
"""
return migrate_any(DECKY_PLUGIN_LOG_DIR, *files_or_directories)
"""
Logging
"""
try:
for x in [entry.name for entry in sorted(os.scandir(DECKY_PLUGIN_LOG_DIR),key=lambda x: x.stat().st_mtime, reverse=True) if entry.name.endswith(".log")][4:]:
os.unlink(os.path.join(DECKY_PLUGIN_LOG_DIR, x))
except Exception as e:
print(f"Failed to delete old logs: {str(e)}")
logging.basicConfig(filename=DECKY_PLUGIN_LOG,
format='[%(asctime)s][%(levelname)s]: %(message)s',
force=True)
logger: logging.Logger = logging.getLogger()
# Also log to stdout
logger.addHandler(logging.StreamHandler())
"""The main plugin logger writing to `DECKY_PLUGIN_LOG`."""
logger.setLevel(logging.INFO)
"""
Event handling
"""
# TODO better docstring im lazy
async def emit(event: str, *args: Any) -> None:
"""
Send an event to the frontend.
"""
pass