velxio/backend/app/models/project.py

import uuid
from datetime import datetime, timezone

from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database.session import Base


class Project(Base):
    __tablename__ = "projects"
    __table_args__ = (UniqueConstraint("user_id", "slug", name="uq_user_slug"),)

    id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
    user_id: Mapped[str] = mapped_column(String, ForeignKey("users.id"), nullable=False, index=True)
    name: Mapped[str] = mapped_column(String(120), nullable=False)
    slug: Mapped[str] = mapped_column(String(120), nullable=False)
    description: Mapped[str | None] = mapped_column(String(500), nullable=True)
    is_public: Mapped[bool] = mapped_column(Boolean, default=True)
    board_type: Mapped[str] = mapped_column(String(50), default="arduino-uno")
    code: Mapped[str] = mapped_column(Text, default="")
    components_json: Mapped[str] = mapped_column(Text, default="[]")
    wires_json: Mapped[str] = mapped_column(Text, default="[]")
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )

    # Aggregate usage counters (kept in sync by MetricsService for O(1) reads)
    compile_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    compile_error_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    run_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    update_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    last_compiled_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    last_run_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    owner: Mapped["User"] = relationship("User", back_populates="projects")  # noqa: F821