"""add_custom_registration_data

Revision ID: 014_custom_registration
Revises: a1b2c3d4e5f6
Create Date: 2026-02-01 10:00:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '014_custom_registration'
down_revision: Union[str, None] = 'a1b2c3d4e5f6'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Add custom_registration_data column to users table
    # This stores dynamic registration field responses as JSON
    op.add_column('users', sa.Column(
        'custom_registration_data',
        sa.JSON,
        nullable=False,
        server_default='{}'
    ))

    # Add comment for documentation
    op.execute("""
        COMMENT ON COLUMN users.custom_registration_data IS
        'Dynamic registration field responses stored as JSON for custom form fields';
    """)


def downgrade() -> None:
    op.drop_column('users', 'custom_registration_data')