from __future__ import annotations

from dataclasses import dataclass

from packages.domain import Asset, AssetStatus, ClassificationStatus
from packages.ports.asset_repository import AssetRepository


@dataclass(slots=True)
class CreateAssetCommand:
    project_id: str
    library_id: str
    name: str
    storage_key: str
    mime_type: str
    metadata: dict[str, object] | None = None
    file_size: int = 0
    thumbnail_url: str | None = None
    duration: float | None = None
    width: int | None = None
    height: int | None = None
    fps: float | None = None
    codec: str | None = None
    status: AssetStatus = AssetStatus.UPLOADING
    classification_status: ClassificationStatus = ClassificationStatus.PENDING
    quality_score: float | None = None
    uploaded_by_user_id: str = ""


class ListAssetsUseCase:
    def __init__(self, asset_repository: AssetRepository):
        self.asset_repository = asset_repository

    def execute(self, library_id: str) -> list[Asset]:
        if not library_id.strip():
            raise ValueError("library_id 不能为空")
        return self.asset_repository.find_by_library(library_id.strip())


class CreateAssetUseCase:
    def __init__(self, asset_repository: AssetRepository):
        self.asset_repository = asset_repository

    def execute(self, command: CreateAssetCommand) -> Asset:
        asset = Asset.create(
            project_id=command.project_id,
            library_id=command.library_id,
            name=command.name,
            storage_key=command.storage_key,
            mime_type=command.mime_type,
            metadata=command.metadata,
            file_size=command.file_size,
            thumbnail_url=command.thumbnail_url,
            duration=command.duration,
            width=command.width,
            height=command.height,
            fps=command.fps,
            codec=command.codec,
            status=command.status,
            classification_status=command.classification_status,
            quality_score=command.quality_score,
            uploaded_by_user_id=command.uploaded_by_user_id,
        )
        return self.asset_repository.create(asset)