"""Add Artist and Snapshot models

Revision ID: 4401cb416661
Revises: 707387fe1be2
Create Date: 2025-12-24 23:06:59.235445

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '4401cb416661'
down_revision: Union[str, Sequence[str], None] = '707387fe1be2'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('analysis_snapshots',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('date', sa.DateTime(), nullable=True),
    sa.Column('period_start', sa.DateTime(), nullable=True),
    sa.Column('period_end', sa.DateTime(), nullable=True),
    sa.Column('period_label', sa.String(), nullable=True),
    sa.Column('metrics_payload', sa.JSON(), nullable=True),
    sa.Column('narrative_report', sa.JSON(), nullable=True),
    sa.Column('model_used', sa.String(), nullable=True),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_analysis_snapshots_date'), 'analysis_snapshots', ['date'], unique=False)
    op.create_index(op.f('ix_analysis_snapshots_id'), 'analysis_snapshots', ['id'], unique=False)
    op.create_table('artists',
    sa.Column('id', sa.String(), nullable=False),
    sa.Column('name', sa.String(), nullable=True),
    sa.Column('genres', sa.JSON(), nullable=True),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_artists_id'), 'artists', ['id'], unique=False)
    op.create_table('track_artists',
    sa.Column('track_id', sa.String(), nullable=False),
    sa.Column('artist_id', sa.String(), nullable=False),
    sa.ForeignKeyConstraint(['artist_id'], ['artists.id'], ),
    sa.ForeignKeyConstraint(['track_id'], ['tracks.id'], ),
    sa.PrimaryKeyConstraint('track_id', 'artist_id')
    )
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_table('track_artists')
    op.drop_index(op.f('ix_artists_id'), table_name='artists')
    op.drop_table('artists')
    op.drop_index(op.f('ix_analysis_snapshots_id'), table_name='analysis_snapshots')
    op.drop_index(op.f('ix_analysis_snapshots_date'), table_name='analysis_snapshots')
    op.drop_table('analysis_snapshots')
    # ### end Alembic commands ###