TelegramAktienBot/telegram_bot/api_handling/api_handler.py

"""
script for communicating with webservice to get data from database
"""
__author__ = "Florian Kellermann, Linus Eickhoff"
__date__ = "16.03.2022"
__version__ = "0.0.1" 
__license__ = "None"

#side-dependencies: none
#Work in Progress

import sys
import os
import requests as r
from croniter import croniter



class API_Handler:
    """class for interacting with the api webservice
    
    Attributes:
        db_adress (string): adress of the database
        token (string): auth token for api

    Methods:
        reauthorize(email, password): set new credentials
        get_user_keywords(user_id): gets the keywords of the user
        set_keyword(user_id, keyword): sets the keyword of the user
        delete_keyword(user_id, keyword): deletes the keyword of the user
        get_user_shares(user_id): gets the shares of the user
        set_share(user_id, symbol): sets the share of the user
        delete_share(user_id, symbol): deletes the share of the user
        get_user_transactions(user_id): gets the transactions of the user
        set_transaction(user_id, transaction): sets the transaction of the user
        get_user_portfolio(user_id): gets the portfolio of the user
        set_portfolio(user_id, portfolio): sets the portfolio of the user
        delete_portfolio(user_id, portfolio): deletes the portfolio of the user
        set_cron_interval(user_id, interval): sets the cron interval of the user
    """
    
    
    def __init__(self, db_adress, email, password):
        """initializes the API_Handler class

        Args:
            db_adress (string): adress of the database
            email (string): email of the user
            password (string): password of the user
        """
        self.db_adress = db_adress

        payload = {'email': email, 'password': password}
        with r.Session() as s:
            p = s.post(self.db_adress + "/user/login", json=payload)
            if p.status_code == 200:
                self.token = p.json()["data"]['token']
            else:
                print("Error: " + str(p.status_code) + " invalid credentials")
                self.token = None


    def reauthorize(self, email, password):
        """set new credentials

        Args:
            email (string): email of the user
            password (string): password of the user
        """
        payload = {'email': email, 'password': password}
        with r.Session() as s:
            p = s.post(self.db_adress + "/user/login", json=payload)
            if p.status_code == 200:
                self.token = p.json()["data"]['token']
                return p.json()["data"]['token']
            else:
                self.token = None
                return None


    def get_user(self, user_id, max_retries=10):
        """gets the shares of the user

        Args:
            user_id (int): id of the user
            max_retries (int): max retries for the request

        Returns:
            json: json of user infos
        """
        if max_retries <= 0:
            return None

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.get(self.db_adress + "/user", headers=headers)
            if(req.status_code == 200):
                return req.json()["data"]
            
            else:
                return self.get_user(user_id, max_retries-1)

    
    def get_all_users(self, max_retries=10):
        """gets all users

        Args:
            max_retries (int): max retries for the request

        Returns:
            list: list of users
        """
        if max_retries <= 0:
            return None

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token}
            req = s.get(self.db_adress + "/users", headers=headers)
            if(req.status_code == 200):
                return req.json()["data"]
            
            else:
                return self.get_all_users(max_retries-1)


    def get_user_keywords(self, user_id, max_retries=10):
        """gets the keywords of the user
        
        Args:
            user_id (int): id of the user
            max_retries (int): max retries for the request

        Returns:
            list: list of keywords
        """
        if max_retries <= 0:
            return None
            
        keywords = []
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.get(self.db_adress + "/keywords", headers=headers)
            if(req.status_code == 200):
                keywords_json = req.json()["data"]
                for keyword in keywords_json:
                    keywords.append(keyword["keyword"])

                return keywords

            else:
                return self.get_user_keywords(user_id, max_retries-1)



    def set_keyword(self, user_id, keyword):
        """sets the keyword of the user

        Args:
            user_id (int): id of the user
            keyword (int): keyword of the user

        Returns:
            int: status code
        """
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.post(self.db_adress + "/keyword", json={"keyword": keyword}, headers=headers)
            
            return req.status_code


    def delete_keyword(self, user_id, keyword):
        """deletes the keyword of the user

        Args:
            user_id (int): id of the user
            keyword (string): keyword of the user

        Returns:
            int: status code
        """
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.delete(self.db_adress + "/keyword", json={"keyword": keyword}, headers=headers)
            
            return req.status_code


    def get_user_shares(self, user_id, max_retries=10):
        """gets the shares of the user

        Args:
            user_id (int): id of the user
            max_retries (int): max retries for the request

        Returns:
            list: list of shares
        """
        if max_retries <= 0:
            return None

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.get(self.db_adress + "/shares", headers=headers)
            if(req.status_code == 200):
                shares_json = req.json()["data"]
                shares = []
                for share in shares_json:
                    shares.append(share["symbol"])

                return shares
            
            else:
                return self.get_user_shares(user_id, max_retries-1)


    def set_share(self, user_id, symbol):
        """sets the share of the user

        Args:
            user_id (int): id of the user
            symbol (string): symbol of the share
        
        Returns:
            int: status code
        """
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.post(self.db_adress + "/share", json={"symbol": symbol}, headers=headers)
            return req.status_code


    def delete_share(self, user_id, symbol):
        """deletes the share of the user

        Args:
            user_id (int): id of the user
            symbol (string): symbol of the share
        
        Returns:
            int: status code
        """
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.delete(self.db_adress + "/share", json={"symbol": symbol}, headers=headers)
            return req.status_code


    def get_user_transactions(self, user_id, max_retries=10):
        """gets the transactions of the user
        
        Args:
            user_id (int): id of the user
            max_retries (int): max retries for the request
        
        Returns:
            dict: dictionary of transactions
        """
        if max_retries <= 0:
            return None

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.get(self.db_adress + "/transactions", headers=headers)

            if req.status_code == 200:
                transactions_dict = req.json()["data"]
                return transactions_dict
            else:
                return self.get_user_transactions(user_id, max_retries-1)


    def set_transaction(self, user_id, comment, isin, count, price, time):
        """sets the transaction of the user

        Args:
            user_id (int): id of the user
            comment (string): comment of the transaction
            isin (string): isin of the transaction
            count (int): count of the transaction
            price (float): price of the transaction
            time (string): time of the transaction
        
        Returns:
            int: status code
        """
        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            transaction = {"comment": comment, "count": count, "isin": isin, "price": price, "time": time}
            req = s.post(self.db_adress + "/transaction", json=transaction, headers=headers)
            return req.status_code


    def get_user_portfolio(self, user_id, max_retries=10):
        """gets the portfolio of the user

        Args:
            user_id (int): id of the user
            max_retries (int): max retries for the request
        
        Returns:
            dict: dictionary of portfolio
        """
        if max_retries <= 0:
            return None

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.get(self.db_adress + "/portfolio", headers=headers)
            if req.status_code == 200:
                portfolio_dict = req.json()["data"]
                return portfolio_dict
            else:
                return self.get_user_portfolio(user_id, max_retries-1)
            
    def set_cron_interval(self, user_id, cron_interval):
        """sets the cron interval of the user

        Args:
            user_id (int): id of the user
            cron_interval (String): Update interval in cron format => see https://crontab.guru/ for formatting
        
        Returns:
            int: status code
        """
        if not croniter.is_valid(cron_interval):
            print("Error: Invalid cron format")
            return -1

        with r.Session() as s:
            headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
            req = s.put(self.db_adress + "/user/setCron", json={"cron": cron_interval}, headers=headers)
            return req.status_code


if __name__ == "__main__":

    print("This is a module for the telegram bot. It is not intended to be run directly.")
    handler = API_Handler("https://gruppe1.testsites.info/api", "bot@example.com", "bot")
    print(handler.token)
    keywords = handler.get_user_keywords(user_id = 1709356058) #user_id is currently mine (Linus)
    print(keywords)
    shares = handler.get_user_portfolio(user_id = 1709356058)
    print("set cron with status: "+ str(handler.set_cron_interval(user_id = 1709356058, cron_interval = "0 0 * * *")))
    user = handler.get_user(user_id = 1709356058)
    print(user)
    all_users = handler.get_all_users()
    print(all_users)
    print(shares)
    sys.exit(1)