"""migrate existing profile settings to new schema

Revision ID: 20260428_0003
Revises: 20260428_0002
Create Date: 2026-04-28

"""

from alembic import op

revision = "20260428_0003"
down_revision = "20260428_0002"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute(
        """
        UPDATE profiles
        SET settings = jsonb_build_object(
            'version', 1,
            'preferences', jsonb_build_object(
                'language', COALESCE(settings->'preferences'->>'language', 'zh-CN'),
                'timezone', COALESCE(settings->'preferences'->>'timezone', 'Asia/Shanghai'),
                'country', COALESCE(settings->'preferences'->>'country', 'US')
            ),
            'privacy', jsonb_build_object(
                'can_sell', COALESCE((settings->'privacy'->>'can_sell')::boolean, false),
                'profile_visibility', COALESCE(settings->'privacy'->>'profile_visibility', 'public')
            ),
            'notification', jsonb_build_object(
                'allow_notifications', COALESCE((settings->'notification'->>'allow_notifications')::boolean, true),
                'allow_vibration', COALESCE((settings->'notification'->>'allow_vibration')::boolean, true)
            ),
            'divination_tutorial', jsonb_build_object(
                'divination_entry_shown', COALESCE((settings->'divination_tutorial'->>'divination_entry_shown')::boolean, false),
                'auto_divination_shown', COALESCE((settings->'divination_tutorial'->>'auto_divination_shown')::boolean, false),
                'manual_divination_shown', COALESCE((settings->'divination_tutorial'->>'manual_divination_shown')::boolean, false)
            )
        )
        WHERE settings IS NOT NULL;
        """
    )


def downgrade() -> None:
    raise RuntimeError(
        "20260428_0003 is a destructive JSON data-shape migration and cannot be "
        "downgraded automatically. Restore profile settings from backup if rollback "
        "to the previous schema is required."
    )