from dataclasses import dataclass
from datetime import datetime
from typing import Optional


@dataclass
class Room:
    id: int
    name: str
    device_label: Optional[str]
    is_active: bool
    last_seen: Optional[datetime]
    created_at: datetime


@dataclass
class Speaker:
    id: int
    name: str
    created_at: datetime
    updated_at: datetime


@dataclass
class VoiceEmbedding:
    id: int
    speaker_id: int
    embedding: bytes  # packed float32
    audio_sample: Optional[bytes]
    created_at: datetime


@dataclass
class Utterance:
    id: int
    room_id: int
    speaker_id: Optional[int]
    transcript: str
    embedding: Optional[bytes]
    match_status: str  # known | unknown | ambiguous | unreviewed
    match_confidence: Optional[float]
    start_time: datetime
    end_time: datetime
    audio_clip_path: Optional[str]
    livekit_room: Optional[str]
    created_at: datetime


@dataclass
class DailySummary:
    id: int
    date: str  # YYYY-MM-DD
    summary_text: str
    generated_at: datetime