import enum

from sqlalchemy import (Boolean, Column, DateTime, ForeignKey, Integer, String,
                        UniqueConstraint)
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from src.db.base import Base


class UserRole(int, enum.Enum):
    ADMIN = 1
    EXECUTOR_DFIP = 2
    EXECUTOR_RF = 3


class Roles(Base):
    __tablename__ = "roles"

    id = Column(Integer, primary_key=True, index=True)
    role = Column(String, nullable=False)

    user_role = relationship("Users", back_populates="role", lazy="select")


class Users(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    email = Column(String, unique=True, index=True, nullable=False)
    username = Column(String, unique=True, index=True, nullable=False)
    hashed_password = Column(String, nullable=True)
    full_name = Column(String, nullable=True)
    role_id = Column(Integer, ForeignKey("roles.id"), nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
    is_active = Column(Boolean, default=True, nullable=False, server_default="true")

    role = relationship(
        "Roles",
        foreign_keys=[role_id],
        back_populates="user_role",
        lazy="selectin",
    )
    user_ssp_link = relationship("UserSSPLink", back_populates="users", lazy="select")


class SSP(Base):
    __tablename__ = "ssp"

    id = Column(Integer, primary_key=True, index=True)
    title = Column(String, nullable=False)
    is_active = Column(Boolean, default=True, nullable=False, server_default="true")
    is_ssp = Column(Boolean, default=True, nullable=False, server_default="true")

    user_ssp_link = relationship("UserSSPLink", back_populates="ssp", lazy="select")


class UserSSPLink(Base):
    __tablename__ = "user_ssp_link"
    __table_args__ = (
        UniqueConstraint("user_id", "ssp_id", name="uq_user_ssp_link_user_id_ssp_id"),
    )

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    ssp_id = Column(Integer, ForeignKey("ssp.id"), nullable=False)

    users = relationship("Users", back_populates="user_ssp_link", lazy="select")
    ssp = relationship("SSP", back_populates="user_ssp_link", lazy="select")