from pydantic import BaseModel, ConfigDict, Field


class UploadUrlRequest(BaseModel):
    file_name: str = Field(min_length=1, max_length=255)
    file_type: str = Field(min_length=1, max_length=64)
    file_size: int = Field(gt=0)


class UploadUrlResponse(BaseModel):
    upload_url: str
    file_url: str
    object_key: str
    expires_in: int
    required_headers: dict[str, str]


class AttachmentCreateRequest(BaseModel):
    message_id: int
    file_url: str = Field(min_length=1, max_length=1024)
    file_type: str = Field(min_length=1, max_length=64)
    file_size: int = Field(gt=0)


class AttachmentRead(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    message_id: int
    file_url: str
    file_type: str
    file_size: int