"""add pricing plans table

Revision ID: add_pricing_plans_table
Revises: add_help_articles_table
Create Date: 2024-12-19 11:00:00.000000

"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy import text


# revision identifiers, used by Alembic.
revision = 'add_pricing_plans_table'
down_revision = 'add_help_articles_table'
branch_labels = None
depends_on = None


def upgrade():
    conn = op.get_bind()
    result = conn.execute(text("""
        SELECT EXISTS (
            SELECT FROM information_schema.tables 
            WHERE table_name = 'pricing_plans'
        );
    """))
    exists = result.scalar()
    if not exists:
        op.create_table('pricing_plans',
            sa.Column('id', sa.Integer(), nullable=False),
            sa.Column('name', sa.String(length=100), nullable=False),
            sa.Column('description', sa.Text(), nullable=True),
            sa.Column('monthly_price', sa.Float(), nullable=False),
            sa.Column('annual_price', sa.Float(), nullable=False),
            sa.Column('features', sa.JSON(), nullable=False),
            sa.Column('is_popular', sa.Boolean(), nullable=True, server_default='false'),
            sa.Column('is_custom', sa.Boolean(), nullable=True, server_default='false'),
            sa.Column('button_text', sa.String(length=50), nullable=True, server_default="'Get Started'"),
            sa.Column('button_url', sa.String(length=200), nullable=True, server_default="'#'"),
            sa.Column('order_index', sa.Integer(), nullable=True, server_default='0'),
            sa.Column('is_active', sa.Boolean(), nullable=True, server_default='true'),
            sa.Column('created_at', sa.DateTime(), nullable=True),
            sa.Column('updated_at', sa.DateTime(), nullable=True),
            sa.Column('created_by', sa.Integer(), nullable=False),
            sa.ForeignKeyConstraint(['created_by'], ['user.id'], ondelete='CASCADE'),
            sa.PrimaryKeyConstraint('id')
        )
        
        # Create indexes for better performance
        op.create_index('idx_pricing_plans_active', 'pricing_plans', ['is_active'])
        op.create_index('idx_pricing_plans_order', 'pricing_plans', ['order_index'])
        op.create_index('idx_pricing_plans_popular', 'pricing_plans', ['is_popular'])
        op.create_index('idx_pricing_plans_created_at', 'pricing_plans', ['created_at'])


def downgrade():
    op.drop_index('idx_pricing_plans_active', table_name='pricing_plans')
    op.drop_index('idx_pricing_plans_order', table_name='pricing_plans')
    op.drop_index('idx_pricing_plans_popular', table_name='pricing_plans')
    op.drop_index('idx_pricing_plans_created_at', table_name='pricing_plans')
    op.drop_table('pricing_plans')