import json
import requests
import time
import tqdm

class Non200StatusCodeError(Exception):
    def __init__(self, status_code, message="Сервер вернул не 200 код"):
        self.status_code = status_code
        self.message = message
        super().__init__(self.message)

    def __str__(self):
        return f"{self.message}. Код статуса: {self.status_code}"
    
def do_request(name, start, end):
    response = requests.post(
        "https://ulsu.ru/oto/api/production/external/createKtalkMeeting.php", 
        data={
            "name": name,
            "desc": "Встреча создана средствами API (Copyright © 2023 Kravenrus), обработка расписания © Kozhilya",
            "startAt": start,
            "endAt": end,
            "stateAnonymous": "true",
            "stateSessionHalls": "false",
            "stateLobby": "false",
            "stateSip": "false",
            "stateAutoRecording": "true",
            "stateAudioPolicy": "false",
            "stateVideoPolicy": "false",
            "stateScreenSharePolicy": "false",
            "pinCode": "false"
        }, 
        headers={ \
            "Referer": "https://ulsu.ru/oto/ktalk/"
        }
        )
    
    if response.status_code == 200:
        time.sleep(5)
        data = response.json()
        return f"https://{data['meetingData']['global']['space']}.ktalk.ru/{data['createdMeeting']['roomName']}"
        
    else:
        raise Non200StatusCodeError(response.status_code, "Ответ сервера: " + response.text)

if __name__ == "__main__":    
    lines = []
    
    with open("lecture.json", "r", encoding="utf-8") as f:
        lectures = json.load(f)
        
    last_auditorium = ""
    last_day_of_week = ""
        
    for lecture in tqdm.tqdm(lectures):
        url = do_request(lecture['name'], lecture['start'], lecture['end'])
        
        if lecture['auditorium'] != last_auditorium:
            if last_auditorium != "":
                lines.append("\n========================\n")
            lines.append(lecture['auditorium'] + "\n")
            last_auditorium = lecture['auditorium']
            last_day_of_week = ""
            
        if lecture['day_of_week'] != last_day_of_week:
            prefix = f"   {lecture['day_of_week']} "
            last_day_of_week = lecture['day_of_week']
        else:
            prefix = " " * 6
        
        lines.append(f"{prefix} #{lecture['pair_number']} - {lecture['name']}\n")
        lines.append(" " * 12 + url + "\n")
        
    with open("result.txt", "w", encoding="utf-8") as f:
        f.writelines(lines)