"""登录IP限制：IP条目池与部门分配模型。"""

from __future__ import annotations

from sqlalchemy import (
    BigInteger,
    Computed,
    ForeignKey,
    Index,
    Integer,
    String,
    UniqueConstraint,
    text,
)
from sqlalchemy.orm import Mapped, mapped_column

from dms.database.base import BusinessTableMixin
from dms.extensions import db


class IpEntry(BusinessTableMixin, db.Model):
    """全局单一IP池：每条为规范化后的精确IP或CIDR网段文本。"""

    __tablename__ = "sys_ip_entry"
    __table_args__ = (
        UniqueConstraint(
            "ip_value",
            "active_marker",
            name="uq_sys_ip_entry_ip_value_active",
        ),
        Index(
            "ix_sys_ip_entry_active",
            "is_deleted",
            "id",
        ),
    )

    ip_value: Mapped[str] = mapped_column(String(64), nullable=False)
    remark: Mapped[str] = mapped_column(
        String(128),
        nullable=False,
        server_default=text("''"),
    )
    active_marker: Mapped[int | None] = mapped_column(
        Integer(),
        Computed("IF(is_deleted = 0, 1, NULL)", persisted=False),
        nullable=True,
    )


class OrgIpAssignment(BusinessTableMixin, db.Model):
    """部门可登录IP分配：整体替换语义，至少一行未删记录即视为"该部门受限"。"""

    __tablename__ = "sys_org_ip_assignment"
    __table_args__ = (
        UniqueConstraint(
            "organization_id",
            "ip_entry_id",
            "active_marker",
            name="uq_sys_org_ip_assignment_active",
        ),
        Index(
            "ix_sys_org_ip_assignment_org_active",
            "organization_id",
            "is_deleted",
        ),
        Index(
            "ix_sys_org_ip_assignment_entry_active",
            "ip_entry_id",
            "is_deleted",
        ),
    )

    organization_id: Mapped[int] = mapped_column(
        BigInteger,
        ForeignKey("sys_organization.id", ondelete="RESTRICT"),
        nullable=False,
    )
    ip_entry_id: Mapped[int] = mapped_column(
        BigInteger,
        ForeignKey("sys_ip_entry.id", ondelete="RESTRICT"),
        nullable=False,
    )
    active_marker: Mapped[int | None] = mapped_column(
        Integer(),
        Computed("IF(is_deleted = 0, 1, NULL)", persisted=False),
        nullable=True,
    )