import random
import sys, os, queue
import time

environment = 'pre'
sys.path.append('environment tag:{}'.format(environment))
real_path = os.path.split(os.path.realpath(__file__))[0]
sys.path.append('{}{}..'.format(real_path, os.sep))
from locust import HttpUser, between, task, TaskSet, events
from locust.runners import WorkerRunner, MasterRunner
from config.common_config import *
from biz import home_page, performance_biz
from lib.thread_logger import get_logger
from lib.edu_http_session import EduHttpSession
from lib.data_convert import string_to_base64
from api.educoder import practices as _api_practices
from api.educoder import mypractices as _api_mypractices

logger.to_html = False
stu_queue = queue.Queue()


@events.init.add_listener
def on_locust_init_testdata(environment, **_kwargs):
    """worker启动时, 注册消息类型(stu_accounts), 用于接收master分发的学生账号"""
    if isinstance(environment.runner, WorkerRunner):
        environment.runner.register_message("stu_accounts", recv_stu_accounts)


@events.test_start.add_listener
def on_test_start(environment, **_kwargs):
    """master开始测试时,根据worker数量将所有学生账号分发"""
    if isinstance(environment.runner, WorkerRunner):
        return
    worker_count = environment.runner.worker_count
    chunk_size = int(performance_biz.thread_num / worker_count)
    # environment.runner.clients 是一个列表，里面放的是每个worker的ID
    for i, worker in enumerate(environment.runner.clients):
        # 根据数据拿到的下标，截取数据
        data = performance_biz.student_accounts[i * chunk_size:i * chunk_size + chunk_size]
        # 发送消息给test_users，并且指定worker
        index_info = {"worker": worker, 'data': data}
        # 发送详情信息
        environment.runner.send_message("stu_accounts", index_info, worker)


def recv_stu_accounts(environment, msg, **kwargs):
    """接收master分发的学生账号"""
    global stu_list
    for stu in msg.data['data']:
        stu_queue.put(stu)


class TaskTest(TaskSet):
    def on_start(self):
        self.user_name = stu_queue.get()
        self.client.logger = get_logger('{}'.format(self.user_name))
        self.client.logger.info('start test: {}'.format(self.user_name))
        self.my_code = string_to_base64(data=performance_biz.answer_code)

    def on_stop(self):
        self.client.logger.info('stop test: {}'.format(self.user_name))
        stu_queue.put(self.user_name)

    @task
    def test_practices(self):
        # 登录
        my_header = default_headers.copy()
        my_header['client'] = self.client
        home_page.login_educoder(username=self.user_name, password='12345678', headers=my_header)
        # 打开刷题页面(获取 identifier)
        res = _api_practices.start(practices_identifier=performance_biz.practices_identifier, headers=my_header)
        mypractices_identifier = res.get('identifier')
        assert res.get('status') == 0 and mypractices_identifier, f"开始刷题失败:{res}"
        mypractices_info = _api_mypractices.get_mypractices(headers=my_header, mypractices_identifier=mypractices_identifier, hidePopLogin=True)
        assert mypractices_info.get('practice'), f"在线刷题-获取题目信息失败:{mypractices_info}"
        # 提交代码、开始评测
        res = _api_mypractices.update_code(headers=my_header,
                                           mypractices_identifier=mypractices_identifier,
                                           language=performance_biz.language,
                                           code=self.my_code)
        assert res.get('status') == 0, f'{self.user_name} 提交代码失败:{res} ,{mypractices_identifier}, {time.time()}'
        res = _api_mypractices.code_submit(headers=my_header, mypractices_identifier=mypractices_identifier)
        assert res.get('status') == 0, f'{self.user_name} 开始评测失败:{res} ,{mypractices_identifier}, {time.time()}'
        # 获取评测结果
        t_start = time.time()
        flag = False
        result = {}
        while time.time() - t_start <= performance_biz.limit_time and flag is False:
            time.sleep(1)
            result = _api_mypractices.result(headers=my_header, mypractices_identifier=mypractices_identifier)
            assert result.get('status') in [0, 1], f'获取评测状态异常:{result}'
            if result.get('status') == 0:
                flag = True
        result_data = result.get('data')
        assert result_data, f'{self.user_name} 获取评测结果异常:{result} ,{mypractices_identifier}, {time.time()}'
        passed = result_data.get('passed')
        assert passed is True, f'{self.user_name} 评测未通过:{result} ,{mypractices_identifier}, {time.time()}'


class ExercisePerformance(HttpUser):
    host = host
    wait_time = between(performance_biz.task_wait, performance_biz.task_wait)  # 任务间的时间间隔
    tasks = [TaskTest]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.client = EduHttpSession(
            base_url=self.host,
            request_event=self.environment.events.request,
            user=self,
            pool_manager=self.pool_manager,
            rest_time=performance_biz.request_wait  # 请求间的时间间隔
        )