moment/src/backend/models/items.py
2020-05-14 13:58:34 -04:00

249 lines
7.2 KiB
Python

# SPDX-License-Identifier: LGPL-3.0-or-later
"""`ModelItem` subclasses definitions."""
import json
from dataclasses import asdict, dataclass, field
from datetime import datetime, timedelta
from pathlib import Path
from typing import Any, Dict, List, Optional, Tuple, Type, Union
from uuid import UUID
import lxml # nosec
import nio
from ..utils import AutoStrEnum, auto
from .model_item import ModelItem
ZeroDate = datetime.fromtimestamp(0)
OptionalExceptionType = Union[Type[None], Type[Exception]]
class TypeSpecifier(AutoStrEnum):
"""Enum providing clarification of purpose for some matrix events."""
Unset = auto()
ProfileChange = auto()
MembershipChange = auto()
@dataclass
class Account(ModelItem):
"""A logged in matrix account."""
id: str = field()
display_name: str = ""
avatar_url: str = ""
max_upload_size: int = 0
profile_updated: datetime = ZeroDate
first_sync_done: bool = False
def __lt__(self, other: "Account") -> bool:
"""Sort by display name or user ID."""
name = self.display_name or self.id[1:]
other_name = other.display_name or other.id[1:]
return name.lower() < other_name.lower()
@dataclass
class Room(ModelItem):
"""A matrix room we are invited to, are or were member of."""
id: str = field()
given_name: str = ""
display_name: str = ""
main_alias: str = ""
avatar_url: str = ""
plain_topic: str = ""
topic: str = ""
inviter_id: str = ""
inviter_name: str = ""
inviter_avatar: str = ""
left: bool = False
typing_members: List[str] = field(default_factory=list)
federated: bool = True
encrypted: bool = False
invite_required: bool = True
guests_allowed: bool = True
can_invite: bool = False
can_redact_all: bool = False
can_send_messages: bool = False
can_set_name: bool = False
can_set_topic: bool = False
can_set_avatar: bool = False
can_set_encryption: bool = False
can_set_join_rules: bool = False
can_set_guest_access: bool = False
last_event_date: datetime = ZeroDate
mentions: int = 0
def __lt__(self, other: "Room") -> bool:
"""Sort by join state, then descending last event date, then name.
Invited rooms are first, then joined rooms, then left rooms.
Within these categories, sort by last event date (room with recent
messages are first), then by display names.
"""
# Left rooms may still have an inviter_id, so check left first.
return (
self.left,
other.inviter_id,
other.last_event_date,
(self.display_name or self.id).lower(),
) < (
other.left,
self.inviter_id,
self.last_event_date,
(other.display_name or other.id).lower(),
)
@dataclass
class Member(ModelItem):
"""A member in a matrix room."""
id: str = field()
display_name: str = ""
avatar_url: str = ""
typing: bool = False
power_level: int = 0
invited: bool = False
profile_updated: datetime = ZeroDate
def __lt__(self, other: "Member") -> bool:
"""Sort by power level, then by display name/user ID."""
name = self.display_name or self.id[1:]
other_name = other.display_name or other.id[1:]
return (
self.invited, other.power_level, name.lower(),
) < (
other.invited, self.power_level, other_name.lower(),
)
class UploadStatus(AutoStrEnum):
"""Enum describing the status of an upload operation."""
Uploading = auto()
Caching = auto()
Error = auto()
@dataclass
class Upload(ModelItem):
"""Represent a running or failed file upload operation."""
id: UUID = field()
filepath: Path = field()
total_size: int = 0
uploaded: int = 0
speed: float = 0
time_left: timedelta = timedelta(0)
paused: bool = False
status: UploadStatus = UploadStatus.Uploading
error: OptionalExceptionType = type(None)
error_args: Tuple[Any, ...] = ()
start_date: datetime = field(init=False, default_factory=datetime.now)
def __lt__(self, other: "Upload") -> bool:
"""Sort by the start date, from newest upload to oldest."""
return self.start_date > other.start_date
@dataclass
class Event(ModelItem):
"""A matrix state event or message."""
id: str = field()
event_id: str = field()
event_type: Type[nio.Event] = field()
date: datetime = field()
sender_id: str = field()
sender_name: str = field()
sender_avatar: str = field()
content: str = ""
inline_content: str = ""
reason: str = ""
links: List[str] = field(default_factory=list)
mentions: List[Tuple[str, str]] = field(default_factory=list)
type_specifier: TypeSpecifier = TypeSpecifier.Unset
target_id: str = ""
target_name: str = ""
target_avatar: str = ""
redacter_id: str = ""
redacter_name: str = ""
is_local_echo: bool = False
source: Optional[nio.Event] = None
media_url: str = ""
media_title: str = ""
media_width: int = 0
media_height: int = 0
media_duration: int = 0
media_size: int = 0
media_mime: str = ""
media_crypt_dict: Dict[str, Any] = field(default_factory=dict)
thumbnail_url: str = ""
thumbnail_mime: str = ""
thumbnail_width: int = 0
thumbnail_height: int = 0
thumbnail_crypt_dict: Dict[str, Any] = field(default_factory=dict)
def __lt__(self, other: "Event") -> bool:
"""Sort by date in descending order, from newest to oldest."""
return self.date > other.date
@staticmethod
def parse_links(text: str) -> List[str]:
"""Return list of URLs (`<a href=...>` tags) present in the text."""
if not text.strip():
return []
return [link[2] for link in lxml.html.iterlinks(text)]
def serialize_field(self, field: str) -> Any:
if field == "source":
try:
as_dict = nio.attr.asdict # nio < 0.11
except AttributeError:
as_dict = asdict
source_dict = as_dict(self.source) if self.source else {}
return json.dumps(source_dict)
return super().serialize_field(field)
@dataclass
class Device(ModelItem):
"""A matrix user's device. This class is currently unused."""
id: str = field()
ed25519_key: str = field()
trusted: bool = False
blacklisted: bool = False
display_name: str = ""
last_seen_ip: str = ""
last_seen_date: str = ""