"""add assets table

Revision ID: 0007_assets
Revises: 0006_chapter_cover_intents
Create Date: 2026-03-19

"""

from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = "0007_assets"
down_revision: Union[str, Sequence[str], None] = "0006_chapter_cover_intents"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "assets",
        sa.Column("id", sa.String(), nullable=False),
        sa.Column("asset_type", sa.String(), nullable=False),
        sa.Column("storage_key", sa.String(), nullable=False),
        sa.Column("url", sa.String(), nullable=True),
        sa.Column("provider", sa.String(), nullable=True),
        sa.Column("style_profile", sa.String(), nullable=True),
        sa.Column("prompt_final", sa.Text(), nullable=True),
        sa.Column("status", sa.String(), nullable=False),
        sa.Column("width", sa.Integer(), nullable=True),
        sa.Column("height", sa.Integer(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=True),
        sa.PrimaryKeyConstraint("id"),
        if_not_exists=True,
    )
    op.create_index(
        op.f("ix_assets_asset_type"),
        "assets",
        ["asset_type"],
        unique=False,
        if_not_exists=True,
    )


def downgrade() -> None:
    op.drop_index(op.f("ix_assets_asset_type"), table_name="assets")
    op.drop_table("assets")