"""Initial migration

Revision ID: 0001
Revises: None
Create Date: 2023-12-15

"""
import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = '0001'
down_revision = None
branch_labels = None
depends_on = None


def upgrade() -> None:
    # Create users table
    op.create_table(
        'users',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('email', sa.String(), nullable=False),
        sa.Column('username', sa.String(), nullable=False),
        sa.Column('hashed_password', sa.String(), nullable=False),
        sa.Column('is_active', sa.Boolean(), nullable=True),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)

    # Create categories table
    op.create_table(
        'categories',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('name', sa.String(), nullable=False),
        sa.Column('color', sa.String(), nullable=True),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
        sa.Column('owner_id', sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_categories_id'), 'categories', ['id'], unique=False)

    # Create tasks table
    op.create_table(
        'tasks',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('title', sa.String(), nullable=False),
        sa.Column('description', sa.Text(), nullable=True),
        sa.Column('is_completed', sa.Boolean(), nullable=True),
        sa.Column('due_date', sa.DateTime(timezone=True), nullable=True),
        sa.Column('priority', sa.String(), nullable=True),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
        sa.Column('owner_id', sa.Integer(), nullable=False),
        sa.Column('category_id', sa.Integer(), nullable=True),
        sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ),
        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_tasks_id'), 'tasks', ['id'], unique=False)
    op.create_index(op.f('ix_tasks_title'), 'tasks', ['title'], unique=False)


def downgrade() -> None:
    op.drop_index(op.f('ix_tasks_title'), table_name='tasks')
    op.drop_index(op.f('ix_tasks_id'), table_name='tasks')
    op.drop_table('tasks')
    op.drop_index(op.f('ix_categories_id'), table_name='categories')
    op.drop_table('categories')
    op.drop_index(op.f('ix_users_username'), table_name='users')
    op.drop_index(op.f('ix_users_id'), table_name='users')
    op.drop_index(op.f('ix_users_email'), table_name='users')
    op.drop_table('users')