from pydantic import Field
from sqlalchemy import (INTEGER,VARCHAR,)
from sqlalchemy.orm import (Mapped,mapped_column,relationship,Session)
from app.models.main import Base
from app.utils.schemas_utils import CustomModel

class RoleBase(CustomModel):
    role_id: int | None = Field(default=None)
    role_name: str | None = Field(default=None)

class TblRole(Base):
    __tablename__ = "tbl_role"

    role_id: Mapped[int] = mapped_column("role_id", INTEGER, primary_key=True, autoincrement=True)
    role_name: Mapped[str] = mapped_column("role_name", VARCHAR(255), nullable=True, server_default=None)

    admins = relationship("TblAdmin", back_populates="role")
    seafarer = relationship("TblSeafarers", back_populates="role")
    users = relationship("TblUsers",back_populates="role")

    def __init__(self, role_id: int, role_name: str):
        self.role_id = role_id
        self.role_name = role_name

    @classmethod
    def create(cls, data: RoleBase, db: Session) -> "TblRole":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data