#!/usr/bin/env python3

import sys
import os
sys.path.append(os.getcwd())
import dbm
from lib.terminal_table import ascii_table

if len(sys.argv) < 2:
    print(f'{sys.argv[0]}: missing key hash')
    sys.exit(1)

with dbm.open('server/data/conf/client_fingerprints', 'c') as db:
    try:
        del db[bytes.fromhex(sys.argv[1])]
    except:
        print(f'{sys.argv[0]}: hash not registered')
        sys.exit(1)
    db.close()

if os.path.exists('server/data/conf/locks/client_admin_rights.lock'):
    with open('server/data/conf/locks/client_admin_rights.lock', 'r') as lockf:
        print(f'{sys.argv[0]}: admin rights file is locked by process {lockf.read()}')
        lockf.close()
        sys.exit(1)

try:
    with open('server/data/conf/locks/client_admin_rights.lock', 'w') as lockf:
        lockf.write(str(os.getpid()))
        lockf.close()

    with open('server/data/conf/client_admin_rights', 'r') as carf:
        admins = {kh for kh in carf.read().split('\n') if kh}
        carf.close()

    if sys.argv[1] in admins:
        admins.remove(sys.argv[1])
        with open('server/data/conf/client_admin_rights', 'w') as carf:
            carf.write('\n'.join(admins))
            carf.close()

finally:
    os.remove('server/data/conf/locks/client_admin_rights.lock')