from pydantic import BaseModel
from typing import Optional
from datetime import datetime

class SongBase(BaseModel):
    title: str
    artist: str
    album: Optional[str] = None
    genre: Optional[str] = None

class SongCreate(SongBase):
    pass

class SongResponse(SongBase):
    id: str
    duration_sec: float = 0
    file_path: str
    transcoded_path: Optional[str] = None
    album_art_path: Optional[str] = None
    added_at: datetime
    file_format: Optional[str] = None
    file_size_bytes: int = 0

    class Config:
        from_attributes = True

class ScanResult(BaseModel):
    scanned: int
    added: int
    skipped: int
    errors: list[str]