from pydantic import BaseModel, Field


class ModelInfo(BaseModel):
    id: str
    name: str
    model_type: str
    path: str | None = None
    is_downloaded: bool = False
    context_length: int | None = None
    supported_peft_methods: list[str] = []


class ModelDownloadRequest(BaseModel):
    model_id: str = Field(..., description="HuggingFace or ModelScope model ID, e.g. 'meta-llama/Llama-3.1-8B'")
    use_modelscope: bool = Field(default=False, description="Use ModelScope instead of HuggingFace")


class ModelDownloadResponse(BaseModel):
    model_id: str
    status: str  # "downloading" | "completed" | "failed"
    path: str | None = None
    error: str | None = None