feat: manage bounded automation service accounts

src/govoplan_access/backend/db/models.py

@@ -4,7 +4,18 @@ import uuid
 from datetime import datetime
 from typing import Any
 
-from sqlalchemy import Boolean, DateTime, ForeignKey, Index, String, Text, UniqueConstraint, JSON, text
+from sqlalchemy import (
+    JSON,
+    Boolean,
+    DateTime,
+    ForeignKey,
+    Index,
+    Integer,
+    String,
+    Text,
+    UniqueConstraint,
+    text,
+)
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from govoplan_access.backend.db.base import AccessBase, TimestampMixin
@@ -110,6 +121,91 @@ class User(AccessBase, TimestampMixin):
     auth_sessions: Mapped[list[AuthSession]] = relationship(back_populates="user", cascade="all, delete-orphan")
 
 
+class ServiceAccount(AccessBase, TimestampMixin):
+    """Managed non-login principal for current-authority automation."""
+
+    __tablename__ = "access_service_accounts"
+    __table_args__ = (
+        UniqueConstraint(
+            "tenant_id",
+            "normalized_name",
+            name="uq_access_service_accounts_tenant_name",
+        ),
+        UniqueConstraint(
+            "account_id",
+            name="uq_access_service_accounts_account",
+        ),
+        UniqueConstraint(
+            "membership_id",
+            name="uq_access_service_accounts_membership",
+        ),
+    )
+
+    id: Mapped[str] = mapped_column(
+        String(36),
+        primary_key=True,
+        default=new_uuid,
+    )
+    tenant_id: Mapped[str] = mapped_column(
+        String(36),
+        nullable=False,
+        index=True,
+    )
+    account_id: Mapped[str] = mapped_column(
+        ForeignKey("access_accounts.id", ondelete="CASCADE"),
+        nullable=False,
+        index=True,
+    )
+    membership_id: Mapped[str] = mapped_column(
+        ForeignKey("access_users.id", ondelete="CASCADE"),
+        nullable=False,
+        index=True,
+    )
+    name: Mapped[str] = mapped_column(
+        String(255),
+        nullable=False,
+    )
+    normalized_name: Mapped[str] = mapped_column(
+        String(255),
+        nullable=False,
+    )
+    description: Mapped[str | None] = mapped_column(Text)
+    scope_ceiling: Mapped[list[str]] = mapped_column(
+        JSON,
+        default=list,
+        nullable=False,
+    )
+    is_active: Mapped[bool] = mapped_column(
+        Boolean,
+        default=True,
+        nullable=False,
+        index=True,
+    )
+    revision: Mapped[int] = mapped_column(
+        Integer,
+        default=1,
+        nullable=False,
+    )
+    created_by_account_id: Mapped[str | None] = mapped_column(
+        ForeignKey("access_accounts.id", ondelete="SET NULL"),
+        nullable=True,
+    )
+    updated_by_account_id: Mapped[str | None] = mapped_column(
+        ForeignKey("access_accounts.id", ondelete="SET NULL"),
+        nullable=True,
+    )
+    retired_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True),
+        nullable=True,
+        index=True,
+    )
+    settings: Mapped[dict[str, Any]] = mapped_column(
+        JSON,
+        default=dict,
+        nullable=False,
+    )
+
+
 class Group(AccessBase, TimestampMixin):
     __tablename__ = "access_groups"
     __table_args__ = (UniqueConstraint("tenant_id", "slug", name="uq_groups_tenant_slug"),)
@@ -358,6 +454,7 @@ __all__ = [
     "IdentityAccountLink",
     "OrganizationUnit",
     "Role",
+    "ServiceAccount",
     "SystemRoleAssignment",
     "Tenant",
     "User",