"""create users table

Revision ID: a1b2c3d4e5f6
Revises: 
Create Date: 2023-01-01 12:00:00.000000
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.sql import func
import uuid

# revision identifiers
revision = 'a1b2c3d4e5f6'
down_revision = None
branch_labels = None
depends_on = None

def upgrade():
    op.create_table(
        'users',
        sa.Column('id', sa.String(), primary_key=True, server_default=sa.text('uuid_generate_v4()')),
        sa.Column('session_token', sa.String(), unique=True, nullable=True),
        sa.Column('is_logged_in', sa.Boolean(), server_default=sa.text('false')),
        sa.Column('last_logout', sa.DateTime(), nullable=True),
        sa.Column('last_login', sa.DateTime(), nullable=True),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.now(), onupdate=sa.func.now()),
        sa.PrimaryKeyConstraint('id')
    )
    
    op.create_index('ix_users_session_token', 'users', ['session_token'], unique=True)

def downgrade():
    op.drop_index('ix_users_session_token', 'users')
    op.drop_table('users')