"""Add users and invite_codes tables for creator authentication.

Revision ID: 016_add_users_and_invite_codes
Revises: 015_add_creator_profile
"""
from alembic import op

revision = "016_add_users_and_invite_codes"
down_revision = "015_add_creator_profile"
branch_labels = None
depends_on = None


def upgrade() -> None:
    # Use raw SQL to avoid SQLAlchemy's Enum double-creation bug with asyncpg
    op.execute("""
        DO $$ BEGIN
            CREATE TYPE user_role AS ENUM ('creator', 'admin');
        EXCEPTION WHEN duplicate_object THEN NULL;
        END $$
    """)

    op.execute("""
        CREATE TABLE IF NOT EXISTS users (
            id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
            email VARCHAR(255) NOT NULL UNIQUE,
            hashed_password VARCHAR(255) NOT NULL,
            display_name VARCHAR(255) NOT NULL,
            role user_role NOT NULL DEFAULT 'creator',
            creator_id UUID REFERENCES creators(id) ON DELETE SET NULL,
            is_active BOOLEAN NOT NULL DEFAULT TRUE,
            created_at TIMESTAMP NOT NULL DEFAULT now(),
            updated_at TIMESTAMP NOT NULL DEFAULT now()
        )
    """)

    op.execute("""
        CREATE TABLE IF NOT EXISTS invite_codes (
            id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
            code VARCHAR(100) NOT NULL UNIQUE,
            uses_remaining INTEGER NOT NULL DEFAULT 1,
            created_by UUID REFERENCES users(id) ON DELETE SET NULL,
            expires_at TIMESTAMP,
            created_at TIMESTAMP NOT NULL DEFAULT now()
        )
    """)


def downgrade() -> None:
    op.execute("DROP TABLE IF EXISTS invite_codes")
    op.execute("DROP TABLE IF EXISTS users")
    op.execute("DROP TYPE IF EXISTS user_role")