from __future__ import annotations

from datetime import datetime
from uuid import uuid4

from sqlalchemy import (
    JSON,
    CheckConstraint,
    DateTime,
    ForeignKey,
    Index,
    String,
    Text,
    UniqueConstraint,
)
from sqlalchemy.orm import Mapped, mapped_column

from app.security.models import Base, utcnow


class CopilotRunRecord(Base):
    __tablename__ = "copilot_runs"
    __table_args__ = (
        UniqueConstraint(
            "workspace_id", "idempotency_key", name="uq_copilot_run_workspace_idempotency"
        ),
        CheckConstraint(
            "status in ('plan_ready','blocked','executing','completed','partial','failed','cancelled')",
            name="ck_copilot_run_status",
        ),
        Index("ix_copilot_runs_workspace_created", "workspace_id", "created_at"),
        Index("ix_copilot_runs_workspace_status", "workspace_id", "status"),
        Index("ix_copilot_runs_project_created", "project_id", "created_at"),
    )

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid4()))
    workspace_id: Mapped[str] = mapped_column(
        String(36), ForeignKey("workspaces.id", ondelete="RESTRICT"), nullable=False
    )
    user_id: Mapped[str] = mapped_column(
        String(36), ForeignKey("users.id", ondelete="RESTRICT"), nullable=False
    )
    project_id: Mapped[str | None] = mapped_column(
        String(36), ForeignKey("projects.id", ondelete="RESTRICT")
    )
    idempotency_key: Mapped[str] = mapped_column(String(255), nullable=False)
    request_fingerprint: Mapped[str] = mapped_column(String(64), nullable=False)
    request_text: Mapped[str] = mapped_column(Text, nullable=False)
    context_json: Mapped[dict[str, object]] = mapped_column("context", JSON, nullable=False)
    plan_json: Mapped[dict[str, object]] = mapped_column("plan", JSON, nullable=False)
    status: Mapped[str] = mapped_column(String(32), nullable=False)
    current_action_id: Mapped[str | None] = mapped_column(String(64))
    results_json: Mapped[list[dict[str, object]]] = mapped_column(
        "results", JSON, nullable=False, default=list
    )
    summary: Mapped[str | None] = mapped_column(Text)
    error_code: Mapped[str | None] = mapped_column(String(100))
    error_message: Mapped[str | None] = mapped_column(Text)
    confirmed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, default=utcnow
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, default=utcnow, onupdate=utcnow
    )
    completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))