it-volunteers-for-peace/alembic/versions/9b42b5289e30_init_tables.py

"""init tables

Revision ID: 9b42b5289e30
Revises:
Create Date: 2022-10-17 11:43:07.452838

"""
from alembic import op
from sqlalchemy.sql import text


# revision identifiers, used by Alembic.
revision = '9b42b5289e30'
down_revision = None
branch_labels = None
depends_on = None


def upgrade() -> None:
    conn = op.get_bind()

    init_users_query = """
    CREATE TABLE users (
        user_id bigint PRIMARY KEY,
        chat_id bigint
    );
    """
    conn.execute(text(init_users_query))

    init_projects_query = """
    CREATE TABLE projects (
        id SERIAL PRIMARY KEY,
        name varchar(50),
        description varchar(1000),
        creator bigint REFERENCES users,
        contributors smallint DEFAULT 1,
        status bit(1) DEFAULT B'1',
        tag varchar(50) UNIQUE,
        category varchar(50) UNIQUE,
        creation_date date DEFAULT CURRENT_DATE
    );
    """
    conn.execute(text(init_projects_query))


def downgrade() -> None:
    conn = op.get_bind()

    conn.execute(text(
        "DROP TABLE users, projects CASCADE"
    ))