from typing import List
from sqlalchemy import String, Text, Boolean, Index, JSON
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.dialects.postgresql import ARRAY
from sqlalchemy import text
from app.models.base import Base, UUIDMixin, TimestampMixin


class BlogPost(Base, UUIDMixin, TimestampMixin):
    __tablename__ = "blog_posts"

    title: Mapped[str] = mapped_column(String(255), nullable=False)
    slug: Mapped[str] = mapped_column(String(255), nullable=False, unique=True)
    excerpt: Mapped[str | None] = mapped_column(Text, nullable=True)
    body: Mapped[str] = mapped_column(Text, nullable=False, default="")
    author: Mapped[str | None] = mapped_column(String(255), nullable=True)
    featured_image_url: Mapped[str | None] = mapped_column(String(2048), nullable=True)
    # Use JSON for broader DB compatibility; PostgreSQL ARRAY is handled via type override in migration
    tags: Mapped[list] = mapped_column(JSON, nullable=False, default=list)
    published: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)

    __table_args__ = (
        Index("ix_blog_posts_slug", "slug"),
    )