"""initial schema

Revision ID: initial_schema
Revises: 
Create Date: 2024-01-03 20:45:00.000000

"""
from alembic import op
import sqlalchemy as sa

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

def upgrade() -> None:
    # Создаем таблицу employees
    op.create_table(
        'employees',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('first_name', sa.String(), nullable=False),
        sa.Column('last_name', sa.String(), nullable=False),
        sa.Column('department', sa.String(), nullable=False),
        sa.Column('office', sa.String(), nullable=False),
        sa.Column('hashed_password', sa.String(), nullable=False),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
        sa.PrimaryKeyConstraint('id')
    )
    
    # Создаем таблицу requests
    op.create_table(
        'requests',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('title', sa.String(), nullable=False),
        sa.Column('description', sa.String(), nullable=False),
        sa.Column('status', sa.String(), nullable=False),
        sa.Column('priority', sa.String(), nullable=False),
        sa.Column('employee_id', sa.Integer(), nullable=False),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
        sa.ForeignKeyConstraint(['employee_id'], ['employees.id'], ondelete='CASCADE'),
        sa.PrimaryKeyConstraint('id')
    )
    
    # Создаем таблицу tokens
    op.create_table(
        'tokens',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('access_token', sa.String(), nullable=False),
        sa.Column('employee_id', sa.Integer(), nullable=False),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
        sa.Column('expires_at', sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(['employee_id'], ['employees.id'], ondelete='CASCADE'),
        sa.PrimaryKeyConstraint('id')
    )
    
    # Создаем индексы
    op.create_index(op.f('ix_employees_id'), 'employees', ['id'], unique=False)
    op.create_index(op.f('ix_employees_last_name'), 'employees', ['last_name'], unique=False)
    op.create_index(op.f('ix_requests_id'), 'requests', ['id'], unique=False)
    op.create_index(op.f('ix_tokens_access_token'), 'tokens', ['access_token'], unique=True)
    op.create_index(op.f('ix_tokens_id'), 'tokens', ['id'], unique=False)

def downgrade() -> None:
    # Удаляем индексы
    op.drop_index(op.f('ix_tokens_id'), table_name='tokens')
    op.drop_index(op.f('ix_tokens_access_token'), table_name='tokens')
    op.drop_index(op.f('ix_requests_id'), table_name='requests')
    op.drop_index(op.f('ix_employees_last_name'), table_name='employees')
    op.drop_index(op.f('ix_employees_id'), table_name='employees')
    
    # Удаляем таблицы
    op.drop_table('tokens')
    op.drop_table('requests')
    op.drop_table('employees')