ytdl-sub/src/ytdl_sub/config/config_validator.py
Jesse Bannon 57fd6901e4
[DEV] Linter: Use ruff over black and isort (#1445)
Will eventually replace pylint with ruff
2026-03-09 11:39:01 -07:00

322 lines
10 KiB
Python

import os
import posixpath
from typing import Any, Dict, Optional
from mergedeep import mergedeep
from yt_dlp.utils import datetime_from_str
from ytdl_sub.config.defaults import (
DEFAULT_FFMPEG_PATH,
DEFAULT_FFPROBE_PATH,
DEFAULT_LOCK_DIRECTORY,
MAX_FILE_NAME_BYTES,
)
from ytdl_sub.prebuilt_presets import PREBUILT_PRESETS
from ytdl_sub.utils.exceptions import SubscriptionPermissionError
from ytdl_sub.utils.file_handler import FileHandler
from ytdl_sub.validators.file_path_validators import FFmpegFileValidator, FFprobeFileValidator
from ytdl_sub.validators.strict_dict_validator import StrictDictValidator
from ytdl_sub.validators.validators import (
BoolValidator,
IntValidator,
LiteralDictValidator,
StringValidator,
)
class ExperimentalValidator(StrictDictValidator):
"""
Experimental flags reside under the ``experimental`` key.
"""
_optional_keys = {"enable_update_with_info_json"}
_allow_extra_keys = True
def __init__(self, name: str, value: Any):
super().__init__(name, value)
self._enable_update_with_info_json = self._validate_key(
key="enable_update_with_info_json", validator=BoolValidator, default=False
)
@property
def enable_update_with_info_json(self) -> bool:
"""
Enables modifying subscription files using info.json files using the argument
``--update-with-info-json``. This feature is still being tested and has the ability to
destroy files. Ensure you have a full backup before usage. You have been warned!
"""
return self._enable_update_with_info_json.value
class PersistLogsValidator(StrictDictValidator):
"""
By default, no logs are persisted. Specifying this key will enable persisted logs. The following
options are available.
"""
_required_keys = {"logs_directory"}
_optional_keys = {"keep_logs_after", "keep_successful_logs"}
def __init__(self, name: str, value: Any):
super().__init__(name, value)
self._logs_directory = self._validate_key(key="logs_directory", validator=StringValidator)
self._keep_logs_after: Optional[str] = None
if keep_logs_validator := self._validate_key_if_present(
key="keep_logs_after", validator=StringValidator
):
try:
self._keep_logs_after = datetime_from_str(keep_logs_validator.value)
except Exception as exc:
raise self._validation_exception(f"Invalid datetime string: {str(exc)}")
self._keep_successful_logs = self._validate_key(
key="keep_successful_logs", validator=BoolValidator, default=True
)
@property
def logs_directory(self) -> str:
"""
Required field. Write log files to this directory with names like
``YYYY-mm-dd-HHMMSS.subscription_name.(success|error).log``.
"""
return self._logs_directory.value
# pylint: disable=line-too-long
# @property
# def keep_logs_after(self) -> Optional[str]:
# """
# Optional. Keep logs after this date, in yt-dlp datetime format.
#
# .. code-block:: Markdown
#
# A string in the format YYYYMMDD or
# (now|today|yesterday|date)[+-][0-9](microsecond|second|minute|hour|day|week|month|year)(s)
#
# For example, ``today-1week`` means keep 1 week's worth of logs. By default, ytdl-sub will
# keep all log files.
# """
# return self._keep_logs_after
# pylint: enable=line-too-long
@property
def keep_successful_logs(self) -> bool:
"""
Defaults to ``True``. When this key is ``False``, only write log files for failed
subscriptions.
"""
return self._keep_successful_logs.value
class ConfigOptions(StrictDictValidator):
"""
ytdl-sub is configured using a ``config.yaml`` file.
The ``config.yaml`` is made up of two sections:
.. code-block:: yaml
configuration:
presets:
Note for Windows users, paths can be represented with ``C:/forward/slashes/like/linux``.
If you prefer to use a Windows backslash, note that it must have
``C:\\\\double\\\\bashslash\\\\paths`` in order to escape the backslash character. This is due
to it being a YAML escape character.
.. code-block:: yaml
configuration:
dl_aliases:
mv: "--preset music_video"
u: "--download.url"
experimental:
enable_update_with_info_json: True
ffmpeg_path: "/usr/bin/ffmpeg"
ffprobe_path: "/usr/bin/ffprobe"
file_name_max_bytes: 255
lock_directory: "/tmp"
persist_logs:
keep_successful_logs: True
logs_directory: "/var/log/ytdl-sub-logs"
umask: "022"
working_directory: ".ytdl-sub-working-directory"
"""
_optional_keys = {
"working_directory",
"umask",
"dl_aliases",
"persist_logs",
"lock_directory",
"ffmpeg_path",
"ffprobe_path",
"file_name_max_bytes",
"experimental",
}
def __init__(self, name: str, value: Any):
super().__init__(name, value)
self._working_directory = self._validate_key_if_present(
key="working_directory",
validator=StringValidator,
default=".ytdl-sub-working-directory",
)
self._umask = self._validate_key_if_present(
key="umask", validator=StringValidator, default="022"
)
self._dl_aliases = self._validate_key_if_present(
key="dl_aliases", validator=LiteralDictValidator
)
self._persist_logs = self._validate_key_if_present(
key="persist_logs", validator=PersistLogsValidator
)
self._lock_directory = self._validate_key(
key="lock_directory", validator=StringValidator, default=DEFAULT_LOCK_DIRECTORY
)
self._ffmpeg_path = self._validate_key(
key="ffmpeg_path", validator=FFmpegFileValidator, default=DEFAULT_FFMPEG_PATH
)
self._ffprobe_path = self._validate_key(
key="ffprobe_path", validator=FFprobeFileValidator, default=DEFAULT_FFPROBE_PATH
)
self._experimental = self._validate_key(
key="experimental", validator=ExperimentalValidator, default={}
)
self._file_name_max_bytes = self._validate_key(
key="file_name_max_bytes", validator=IntValidator, default=MAX_FILE_NAME_BYTES
)
if not FileHandler.is_path_writable(self.working_directory):
raise SubscriptionPermissionError(
"ytdl-sub does not have permissions to the working directory: "
f"{self.working_directory}"
)
@property
def working_directory(self) -> str:
"""
The directory to temporarily store downloaded files before moving them into their final
directory. Defaults to ``.ytdl-sub-working-directory``, created in the same directory
that ytdl-sub is invoked from.
"""
# Expands tildas to actual paths, use native os sep
return os.path.expanduser(self._working_directory.value.replace(posixpath.sep, os.sep))
@property
def umask(self) -> Optional[str]:
"""
Umask in octal format to apply to every created file. Defaults to ``022``.
"""
return self._umask.value
@property
def dl_aliases(self) -> Optional[Dict[str, str]]:
"""
.. _dl_aliases:
Alias definitions to shorten :ref:`dl arguments <usage:Download Options>`. For example,
.. code-block:: yaml
configuration:
dl_aliases:
mv: "--preset music_video"
u: "--download.url"
Simplifies
.. code-block:: bash
ytdl-sub dl --preset "Jellyfin Music Videos" --download.url "youtube.com/watch?v=a1b2c3"
to
.. code-block:: bash
ytdl-sub dl --mv --u "youtube.com/watch?v=a1b2c3"
"""
if self._dl_aliases:
return self._dl_aliases.dict
return {}
@property
def persist_logs(self) -> Optional[PersistLogsValidator]:
"""
Persist logs validator. readthedocs in the validator itself!
"""
return self._persist_logs
@property
def file_name_max_bytes(self) -> int:
"""
Max file name size in bytes. Most OS's typically default to 255 bytes.
"""
return self._file_name_max_bytes.value
@property
def experimental(self) -> ExperimentalValidator:
"""
Experimental validator. readthedocs in the validator itself!
"""
return self._experimental
@property
def lock_directory(self) -> str:
"""
The directory to temporarily store file locks, which prevents multiple instances
of ``ytdl-sub`` from running. Note that file locks do not work on
network-mounted directories. Ensure that this directory resides on the host
machine. Defaults to ``/tmp``.
"""
return self._lock_directory.value
@property
def ffmpeg_path(self) -> str:
"""
Path to ffmpeg executable. Defaults to ``/usr/bin/ffmpeg`` for Linux,
``./ffmpeg.exe`` in the same directory as ytdl-sub for Windows.
"""
return self._ffmpeg_path.value
@property
def ffprobe_path(self) -> str:
"""
Path to ffprobe executable. Defaults to ``/usr/bin/ffprobe`` for Linux,
``./ffprobe.exe`` in the same directory as ytdl-sub for Windows.
"""
return self._ffprobe_path.value
class ConfigValidator(StrictDictValidator):
_optional_keys = {"configuration", "presets"}
def __init__(self, name: str, value: Any):
super().__init__(name, value)
self.config_options = self._validate_key_if_present(
"configuration", ConfigOptions, default={}
)
# Make sure presets is a dictionary. Will be validated in `PresetValidator`
self.presets = self._validate_key_if_present("presets", LiteralDictValidator, default={})
# Ensure custom presets do not collide with prebuilt presets
for preset_name in self.presets.keys:
if preset_name in PREBUILT_PRESETS:
raise self._validation_exception(
f"preset name '{preset_name}' conflicts with a prebuilt preset"
)
# Merge prebuilt presets into the config so custom presets can use them
mergedeep.merge(self.presets._value, PREBUILT_PRESETS)