import psycopg as pg
from _connection import _conn_dict as conn

def have_project(name: str) -> bool:
    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
        with conn.cursor() as cur:
            cur.execute(f"select * from pg_database where datname = '{name}'")
            return cur.rowcount > 0

def create_project(name: str) -> None:
    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
        with conn.cursor() as cur:
            cur.execute(f"create database {name} with template = project")

def delete_project(name: str) -> None:
    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
        with conn.cursor() as cur:
            cur.execute(f"drop database {name}")

def open_project(name: str) -> None:
    conn[name] = pg.connect(conninfo=f"dbname={name}", autocommit=True)

def is_project_open(name: str) -> bool:
    return name in conn

def close_project(name: str) -> None:
    conn[name].close()
    del conn[name]