import time


def gen_next_id(id_before):
    str_list = []
    num_list = []
    before = 0
    for i in range(len(id_before)-1):
        if id_before[i].isnumeric() + id_before[i + 1].isnumeric() == 1:
            if id_before[i].isnumeric():
                num_list.append(id_before[before:i+1])
                before = i+1
            else:
                str_list.append(id_before[before:i+1])
                before = i+1
    if id_before[before].isnumeric():
        num_list.append(id_before[before:len(id_before)])
    else:
        str_list.append(id_before[before:len(id_before)])
    num_list[-1] = str(int(num_list[-1]) + 1)
    id_after = ''
    for str_item, num_item in zip(str_list, num_list):
        id_after = id_after + str_item + num_item
    return id_after


def get_id(model_manager, first_id):
    if not model_manager.objects.last():
        return first_id
    else:
        time_start = time.time()
        next_id = gen_next_id(model_manager.objects.order_by('create_time').last().id)
        return next_id


if __name__ == '__main__':
    id_a = gen_next_id("TestLaboratory_V1_Version_1")
    # a = gen_next_id("a100a_V1_11")
    # print(a)
    # print('2'.isnumeric() + '1'.isnumeric())