"""Add PostMetadata table for storing post information from external platforms

Revision ID: d26012201
Revises: c26012001
Create Date: 2026-01-22

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = 'd26012201'
down_revision = 'c26012001'
branch_labels = None
depends_on = None


def upgrade():
    # Create post_metadata table
    op.create_table(
        'post_metadata',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('tag_id', sa.Integer(), nullable=False),
        sa.Column('platform', sa.String(length=64), nullable=False),
        sa.Column('post_id', sa.String(length=64), nullable=False),
        sa.Column('artist', sa.String(length=255), nullable=True),
        sa.Column('title', sa.String(length=512), nullable=True),
        sa.Column('description', sa.Text(), nullable=True),
        sa.Column('source_url', sa.String(length=1024), nullable=True),
        sa.Column('attachment_count', sa.Integer(), nullable=True),
        sa.Column('published_at', sa.DateTime(), nullable=True),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['tag_id'], ['tag.id'], ondelete='CASCADE'),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('tag_id')
    )
    op.create_index(op.f('ix_post_metadata_platform'), 'post_metadata', ['platform'], unique=False)
    op.create_index('ix_post_metadata_platform_post_id', 'post_metadata', ['platform', 'post_id'], unique=False)


def downgrade():
    op.drop_index('ix_post_metadata_platform_post_id', table_name='post_metadata')
    op.drop_index(op.f('ix_post_metadata_platform'), table_name='post_metadata')
    op.drop_table('post_metadata')