"""integration_events — Event Registry + subscriptions (Core is source of truth)."""
from __future__ import annotations

from datetime import datetime
from typing import Optional
from uuid import UUID, uuid4

from sqlalchemy import Boolean, ForeignKey, Integer, String, Text, UniqueConstraint
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.dialects.postgresql import UUID as PGUUID
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.sql import func
from sqlalchemy.types import DateTime

from src.core.database import Base


class IntegrationSubscription(Base):
    """Outbound event subscription. installation_id is connector connection_id."""

    __tablename__ = "integration_subscriptions"

    id: Mapped[UUID] = mapped_column(PGUUID(as_uuid=True), primary_key=True, default=uuid4)
    workspace_id: Mapped[UUID] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False, index=True
    )
    project_id: Mapped[UUID] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("projects.id", ondelete="CASCADE"), nullable=False, index=True
    )
    connection_id: Mapped[Optional[UUID]] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("connector_connections.id", ondelete="SET NULL"), nullable=True
    )
    event: Mapped[str] = mapped_column(String(180), nullable=False)
    event_version: Mapped[str] = mapped_column(String(20), nullable=False, default="01.00.00")
    destination: Mapped[str] = mapped_column(String(40), nullable=False)
    url: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    secret_enc: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    filter_json: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
    ignore_origin: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    max_hops: Mapped[int] = mapped_column(Integer, nullable=False, default=5)
    status: Mapped[str] = mapped_column(String(20), nullable=False, default="active")
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )

    __table_args__ = (
        UniqueConstraint(
            "project_id", "event", "destination", "connection_id",
            name="uq_integration_subscriptions_fanout",
        ),
    )


class ProjectCustomEvent(Base):
    """Per-project custom event registry entries."""

    __tablename__ = "project_custom_events"

    id: Mapped[UUID] = mapped_column(PGUUID(as_uuid=True), primary_key=True, default=uuid4)
    project_id: Mapped[UUID] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("projects.id", ondelete="CASCADE"), nullable=False, index=True
    )
    name: Mapped[str] = mapped_column(String(180), nullable=False)
    version: Mapped[str] = mapped_column(String(20), nullable=False, default="01.00.00")
    alias: Mapped[str] = mapped_column(String(180), nullable=False)
    label: Mapped[str] = mapped_column(String(160), nullable=False)
    schema_json: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    __table_args__ = (
        UniqueConstraint("project_id", "name", "version", name="uq_project_custom_events_name_ver"),
    )