moment/src/backend/user_files.py
2020-03-27 03:53:25 -04:00

339 lines
9.5 KiB
Python

# SPDX-License-Identifier: LGPL-3.0-or-later
"""User data and configuration files definitions."""
import asyncio
import json
from dataclasses import dataclass, field
from pathlib import Path
from typing import TYPE_CHECKING, Any, ClassVar, Dict, Optional
import aiofiles
import pyotherside
from .theme_parser import convert_to_qml
from .utils import atomic_write, dict_update_recursive
if TYPE_CHECKING:
from .backend import Backend
JsonData = Dict[str, Any]
WRITE_LOCK = asyncio.Lock()
@dataclass
class DataFile:
"""Base class representing a user data file."""
is_config: ClassVar[bool] = False
create_missing: ClassVar[bool] = True
backend: "Backend" = field(repr=False)
filename: str = field()
_to_write: Optional[str] = field(init=False, default=None)
def __post_init__(self) -> None:
asyncio.ensure_future(self._write_loop())
@property
def path(self) -> Path:
"""Full path of the file, even if it doesn't exist yet."""
if self.is_config:
return Path(self.backend.appdirs.user_config_dir) / self.filename
return Path(self.backend.appdirs.user_data_dir) / self.filename
async def default_data(self):
"""Default content if the file doesn't exist."""
return ""
async def read(self):
"""Return content of the existing file on disk, or default content."""
try:
return self.path.read_text()
except FileNotFoundError:
default = await self.default_data()
if self.create_missing:
await self.write(default)
return default
async def write(self, data) -> None:
"""Request for the file to be written/updated with data."""
self._to_write = data
async def _write_loop(self) -> None:
"""Write/update file on disk with a 1 second cooldown."""
self.path.parent.mkdir(parents=True, exist_ok=True)
while True:
await asyncio.sleep(1)
if self._to_write is None:
continue
if not self.create_missing and not self.path.exists():
continue
async with atomic_write(self.path) as (new, done):
await new.write(self._to_write)
done()
self._to_write = None
@dataclass
class JSONDataFile(DataFile):
"""Represent a user data file in the JSON format."""
_data: Optional[Dict[str, Any]] = field(init=False, default=None)
def __getitem__(self, key: str) -> Any:
if self._data is None:
raise RuntimeError(f"{self}: read() hasn't been called yet")
return self._data[key]
async def default_data(self) -> JsonData:
return {}
async def read(self) -> JsonData:
"""Return content of the existing file on disk, or default content.
If the file has missing keys, the missing data will be merged and
written to disk before returning.
If `create_missing` is `True` and the file doesn't exist, it will be
created.
"""
try:
data = json.loads(self.path.read_text())
except FileNotFoundError:
if not self.create_missing:
data = await self.default_data()
self._data = data
return data
data = {}
except json.JSONDecodeError:
data = {}
all_data = await self.default_data()
dict_update_recursive(all_data, data)
if data != all_data:
await self.write(all_data)
self._data = all_data
return all_data
async def write(self, data: JsonData) -> None:
js = json.dumps(data, indent=4, ensure_ascii=False, sort_keys=True)
await super().write(js)
@dataclass
class Accounts(JSONDataFile):
"""Config file for saved matrix accounts: user ID, access tokens, etc."""
is_config = True
filename: str = "accounts.json"
async def any_saved(self) -> bool:
"""Return whether there are any accounts saved on disk."""
return bool(await self.read())
async def add(self, user_id: str) -> None:
"""Add an account to the config and write it on disk.
The account's details such as its access token are retrieved from
the corresponding `MatrixClient` in `backend.clients`.
"""
client = self.backend.clients[user_id]
await self.write({
**await self.read(),
client.user_id: {
"homeserver": client.homeserver,
"token": client.access_token,
"device_id": client.device_id,
},
})
async def delete(self, user_id: str) -> None:
"""Delete an account from the config and write it on disk."""
await self.write({
uid: info
for uid, info in (await self.read()).items() if uid != user_id
})
@dataclass
class UISettings(JSONDataFile):
"""Config file for QML interface settings and keybindings."""
is_config = True
filename: str = "settings.json"
async def default_data(self) -> JsonData:
return {
"alertOnMessageForMsec": 4000,
"alwaysCenterRoomHeader": False,
"compactMode": True,
"clearRoomFilterOnEnter": True,
"clearRoomFilterOnEscape": True,
"collapseSidePanesUnderWindowWidth": 400,
"hideProfileChangeEvents": True,
"hideMembershipEvents": False,
"hideUnknownEvents": False,
"theme": "Midnight.qpl",
"writeAliases": {},
"media": {
"autoLoad": True,
"autoPlay": False,
"autoPlayGIF": True,
"autoHideOSDAfterMsec": 3000,
"defaultVolume": 100,
"startMuted": False,
},
"keys": {
"startPythonDebugger": ["Alt+Shift+D"],
"toggleDebugConsole": ["Alt+Shift+C", "F1"],
"reloadConfig": ["Alt+Shift+R"],
"zoomIn": ["Ctrl++"],
"zoomOut": ["Ctrl+-"],
"zoomReset": ["Ctrl+="],
"toggleCompactMode": ["Ctrl+Alt+C"],
"scrollUp": ["Alt+Up", "Alt+K"],
"scrollDown": ["Alt+Down", "Alt+J"],
"scrollPageUp": ["Alt+Ctrl+Up", "Alt+Ctrl+K", "PgUp"],
"scrollPageDown": ["Alt+Ctrl+Down", "Alt+Ctrl+J", "PgDown"],
"scrollToTop":
["Alt+Ctrl+Shift+Up", "Alt+Ctrl+Shift+K", "Home"],
"scrollToBottom":
["Alt+Ctrl+Shift+Down", "Alt+Ctrl+Shift+J", "End"],
"previousTab": ["Alt+Shift+Left", "Alt+Shift+H"],
"nextTab": ["Alt+Shift+Right", "Alt+Shift+L"],
"toggleFocusMainPane": ["Alt+F"],
"clearRoomFilter": ["Alt+Shift+F"],
"accountSettings": ["Alt+A"],
"addNewAccount": ["Alt+Shift+A"],
"addNewChat": ["Alt+C"],
"goToLastPage": ["Ctrl+Tab"],
"goToPreviousRoom": ["Alt+Shift+Up", "Alt+Shift+K"],
"goToNextRoom": ["Alt+Shift+Down", "Alt+Shift+J"],
"toggleCollapseAccount": [ "Alt+O"],
"focusRoomAtIndex": {
"01": "Alt+1",
"02": "Alt+2",
"03": "Alt+3",
"04": "Alt+4",
"05": "Alt+5",
"06": "Alt+6",
"07": "Alt+7",
"08": "Alt+8",
"09": "Alt+9",
"10": "Alt+0",
},
"unselectAllMessages": ["Escape"],
"clearRoomMessages": ["Ctrl+L"],
"sendFile": ["Alt+S"],
"sendFileFromPathInClipboard": ["Alt+Shift+S"],
"toggleFocusRoomPane": ["Alt+R"],
},
}
@dataclass
class UIState(JSONDataFile):
"""File to save and restore the state of the QML interface."""
filename: str = "state.json"
async def default_data(self) -> JsonData:
return {
"collapseAccounts": {},
"page": "Pages/Default.qml",
"pageProperties": {},
}
@dataclass
class History(JSONDataFile):
"""File to save and restore lines typed by the user in QML components."""
filename: str = "history.json"
async def default_data(self) -> JsonData:
return {"console": []}
@dataclass
class Theme(DataFile):
"""A theme file defining the look of QML components."""
# Since it currently breaks at every update and the file format will be
# changed later, don't copy the theme to user data dir if it doesn't exist.
create_missing = False
@property
def path(self) -> Path:
data_dir = Path(self.backend.appdirs.user_data_dir)
return data_dir / "themes" / self.filename
async def default_data(self) -> str:
path = f"src/themes/{self.filename}"
try:
byte_content = pyotherside.qrc_get_file_contents(path)
except ValueError:
# App was compiled without QRC
async with aiofiles.open(path) as file:
return await file.read()
else:
return byte_content.decode()
async def read(self) -> str:
return convert_to_qml(await super().read())