68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
from datetime import UTC, datetime, timedelta
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from typing import Literal
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from pydantic import BaseModel, field_validator
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DEFAULT_LIMIT = 50
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MAX_LIMIT = 500
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_EPOCH = datetime(1970, 1, 1, tzinfo=UTC)
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_MICROSECOND = timedelta(microseconds=1)
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ChatKind = Literal["private", "group", "channel"]
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HitSource = Literal["text", "stt", "version"]
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def encode_cursor(date: datetime, chat_id: int, message_id: int) -> str:
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return f"{(date - _EPOCH) // _MICROSECOND}_{chat_id}_{message_id}"
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def decode_cursor(cursor: str) -> tuple[datetime, int, int]:
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micros, chat_id, message_id = (int(part) for part in cursor.split("_"))
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return _EPOCH + micros * _MICROSECOND, chat_id, message_id
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class SearchFilters(BaseModel):
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account_id: int
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query: str | None = None
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chat_id: int | None = None
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sender_id: int | None = None
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kind: ChatKind | None = None
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has_media: bool | None = None
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deleted: bool | None = None
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edited: bool | None = None
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date_from: datetime | None = None
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date_to: datetime | None = None
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regex: str | None = None
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cursor: str | None = None
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limit: int = DEFAULT_LIMIT
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@field_validator("cursor")
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@classmethod
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def _valid_cursor(cls, value: str | None) -> str | None:
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if value is not None:
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decode_cursor(value)
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return value
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class SearchHit(BaseModel):
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chat_id: int
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message_id: int
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date: datetime
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sender_id: int | None
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text: str | None
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has_media: bool
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media_kind: str | None
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edited_at: datetime | None
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deleted_at: datetime | None
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source: HitSource
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extracted_text: str | None
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version_text: str | None
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version_at: datetime | None
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class SearchPage(BaseModel):
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hits: list[SearchHit]
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next_cursor: str | None
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terms: list[str]
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