"""Initial migration - Create users and strategies tables

Revision ID: 001
Revises:
Create Date: 2024-12-26 00:00:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '001'
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Create users and strategies tables."""
    # Create users table
    op.create_table(
        'users',
        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
        sa.Column('username', sa.String(length=255), nullable=False),
        sa.Column('email', sa.String(length=255), nullable=False),
        sa.Column('hashed_password', sa.String(length=255), nullable=False),
        sa.Column('full_name', sa.String(length=255), nullable=True),
        sa.Column('is_active', sa.Boolean(), nullable=False, server_default='1'),
        sa.Column('is_superuser', sa.Boolean(), nullable=False, server_default='0'),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('CURRENT_TIMESTAMP'), nullable=False),
        sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('CURRENT_TIMESTAMP'), nullable=False),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('username'),
        sa.UniqueConstraint('email')
    )
    op.create_index('ix_users_username', 'users', ['username'])
    op.create_index('ix_users_email', 'users', ['email'])

    # Create strategies table
    op.create_table(
        'strategies',
        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
        sa.Column('user_id', sa.Integer(), nullable=False),
        sa.Column('name', sa.String(length=255), nullable=False),
        sa.Column('description', sa.Text(), nullable=True),
        sa.Column('parameters', sa.JSON(), nullable=True),
        sa.Column('is_active', sa.Boolean(), nullable=False, server_default='1'),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('CURRENT_TIMESTAMP'), nullable=False),
        sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('CURRENT_TIMESTAMP'), nullable=False),
        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index('ix_strategies_name', 'strategies', ['name'])


def downgrade() -> None:
    """Drop users and strategies tables."""
    op.drop_index('ix_strategies_name', 'strategies')
    op.drop_table('strategies')
    op.drop_index('ix_users_email', 'users')
    op.drop_index('ix_users_username', 'users')
    op.drop_table('users')