"""add quota fields to pricing plans

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

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


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


def upgrade():
    conn = op.get_bind()
    
    # Check if columns already exist
    result = conn.execute(text("""
        SELECT column_name 
        FROM information_schema.columns 
        WHERE table_name = 'pricing_plans' 
        AND column_name IN ('room_quota', 'conversation_quota', 'storage_quota_gb', 'manager_quota', 'admin_quota')
    """))
    existing_columns = [row[0] for row in result.fetchall()]
    
    # Add quota columns if they don't exist
    if 'room_quota' not in existing_columns:
        op.add_column('pricing_plans', sa.Column('room_quota', sa.Integer(), nullable=True, server_default='0'))
    
    if 'conversation_quota' not in existing_columns:
        op.add_column('pricing_plans', sa.Column('conversation_quota', sa.Integer(), nullable=True, server_default='0'))
    
    if 'storage_quota_gb' not in existing_columns:
        op.add_column('pricing_plans', sa.Column('storage_quota_gb', sa.Integer(), nullable=True, server_default='0'))
    
    if 'manager_quota' not in existing_columns:
        op.add_column('pricing_plans', sa.Column('manager_quota', sa.Integer(), nullable=True, server_default='0'))
    
    if 'admin_quota' not in existing_columns:
        op.add_column('pricing_plans', sa.Column('admin_quota', sa.Integer(), nullable=True, server_default='0'))


def downgrade():
    # Remove quota columns
    op.drop_column('pricing_plans', 'admin_quota')
    op.drop_column('pricing_plans', 'manager_quota')
    op.drop_column('pricing_plans', 'storage_quota_gb')
    op.drop_column('pricing_plans', 'conversation_quota')
    op.drop_column('pricing_plans', 'room_quota')