import requests
import json
import time
import sys


def send_alert_msg(alert_msg):
    """
    sending messages via Enterprise WeChat Bot with the content of a poem from Jinrishici API.
    今日诗词：名句

    【title】-【author】-【dynasty】
    poem of complete
    :param alert_msg:content with a specified format
    :return: None
    """

    # get the datetime, which is using at a failed situation
    alert_datetime = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))
    # Enterprise WeChat Bot API and the format of body to send
    hook_url = 'https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=ddea3f5f-fbfc-4c21-994a-71e9fc50e4ef'
    body = {
        "msgtype": "text",
        "text": {
            "content": alert_msg
        }
    }

    # get the result of API call
    res = requests.post(hook_url, data=json.dumps(body, ensure_ascii=False).encode('utf-8'))

    # when failed, log it in /opt/logs/alert.log file
    if res.status_code != 200:
        with open('/opt/logs/alert.log', 'a', encoding='utf-8') as alert_log:
            alert_log.write(alert_datetime + ' >>>> ')
            alert_log.write('Failed sending message: ')
            alert_log.write(alert_msg + '\n')


def poem():
    """
    get the poem with Jinrishici API
    :return: None
    """
    # specify token in headers
    headers = {'X-User-Token': 'dNigXSFtjhLbP5nf49piUPzmD7NoNHVz'}
    api_url = 'https://v2.jinrishici.com/sentence'
    # will try for 3 times, in case there are failed situations to get the poem
    for i in range(3):
        res = requests.get(api_url, headers=headers)
        # translate json data to dict format
        dict_substance = json.loads(res.content)

        # when failed to get the content, try again
        if res.status_code != 200 or dict_substance['status'] != 'success':
            continue

        # put necessary content to specific variables
        # print(dict_substance)
        poem_content = dict_substance['data']['content']
        poem_title = dict_substance['data']['origin']['title']
        poem_dynasty = dict_substance['data']['origin']['dynasty']
        poem_author = dict_substance['data']['origin']['author']
        poem_content_all = dict_substance['data']['origin']['content']
        poem_translation = dict_substance['data']['origin']['translate']
        # put poem translation in to the file /opt/scripts/alert/poem_trans.txt, if exists
        with open('/opt/scripts/alert/poem_trans.txt', 'w', encoding='utf-8') as obj_poem_trans:
            if poem_translation:
                for item in poem_translation:
                    obj_poem_trans.write(item + '\n')
            # if the translation part does not exist, put a '' into the file
            else:
                obj_poem_trans.write('')

        # create the format of content which is intended to be send via EWB, aka Enterprise Wechat Bot
        alert_msg = f"今日诗词：{poem_content}\n\n"
        alert_msg += f"【{poem_title}】-【{poem_author}】-【{poem_dynasty}】\n"
        for line in poem_content_all:
            alert_msg += f"{line}\n"

        # when successfully get the needed content, jump out of the for-loop
        break
    # after 3 times re-tries, still cannot get the content, then send the following warning message
    else:
        alert_msg = '当前无法获取今日诗词，请手动检查如下请求返回是否正确！\n'
        alert_msg += 'curl "https://v2.jinrishici.com/sentence" -H "X-User-Token:dNigXSFtjhLbP5nf49piUPzmD7NoNHVz"'

    # send it
    send_alert_msg(alert_msg)


def trans():
    """
    send the translation of the poem which is showed this morning, if exists
    :return: None
    """
    with open('/opt/scripts/alert/poem_trans.txt', 'r', encoding='utf-8') as obj_poem_trans:
        alert_msg = obj_poem_trans.read()
        # print(alert_msg)
        if alert_msg:
            alert_msg = f'今日诗词的译文：\n{alert_msg}'
            send_alert_msg(alert_msg)


def main():
    """
    do the actions according to different parameters
    :return: None
    """
    if sys.argv[1] == 'poem':
        poem()
    elif sys.argv[1] == 'trans':
        trans()
    else:
        pass


if __name__ == '__main__':
    main()