from datetime import datetime

from sqlalchemy import DateTime, Integer, String
from sqlalchemy.dialects.sqlite import JSON
from sqlalchemy.orm import Mapped, mapped_column

from core_db import AuditMixin, Base, TenantMixin, VersionMixin
from core_shared import JSONValue


class SkillVersion(TenantMixin, AuditMixin, VersionMixin, Base):
    __tablename__ = "skill_version"

    skill_id: Mapped[str] = mapped_column(String(36), index=True)
    version_no: Mapped[int] = mapped_column(Integer)
    status: Mapped[str] = mapped_column(String(32), default="draft", index=True)
    runtime_type: Mapped[str] = mapped_column(String(32), default="template")
    entrypoint: Mapped[str | None] = mapped_column(String(128), nullable=True)
    parameter_schema_json: Mapped[dict[str, JSONValue]] = mapped_column(JSON, default=dict)
    output_schema_json: Mapped[dict[str, JSONValue]] = mapped_column(JSON, default=dict)
    implementation_json: Mapped[dict[str, JSONValue]] = mapped_column(JSON, default=dict)
    published_time: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)