import enum

from sqlalchemy import Column, Integer, String, TIMESTAMP, Text, ForeignKey, Enum, UniqueConstraint, func
from sqlalchemy.orm import relationship

from .base_model import Base


class LibrarianStatusEnum(enum.Enum):
    active   = 'active'
    inactive = 'inactive'

class LibrarianRoleEnum(enum.Enum):
    staff = 'staff'
    admin = 'admin'


class Librarian(Base):
    __tablename__  = 'librarian'
    __table_args__ = (UniqueConstraint('id'),)

    id           = Column(Integer, primary_key=True, autoincrement=True)
    first_name   = Column(String(50), nullable=False)
    last_name    = Column(String(50), nullable=False)
    email        = Column(String(100), nullable=False, unique=True)
    phone        = Column(String(20), nullable=False)
    hire_date    = Column(TIMESTAMP, nullable=False, server_default=func.now())
    status       = Column(Enum(LibrarianStatusEnum), nullable=False, default=LibrarianStatusEnum.active)
    role         = Column(Enum(LibrarianRoleEnum), nullable=False)
    last_updated = Column(TIMESTAMP, nullable=False, server_default=func.now())


__all__ = ["Librarian", "LibrarianRoleEnum", "LibrarianStatusEnum"]