xygt/app/worker.py

from config import disallowedMimeTypes, Errors, Config
import secrets
import datetime
import random
import time
import os

def uploadFile(file, ip, userid, filename, id, retention):

    # Is the MIME and file size good? 
    if file.content_type not in disallowedMimeTypes:
        if file.content_length <= Config.maxFileSize:
            # We're going to check whether the id variable has been filled

            while True:                 # Loop to find an available file ID
                id = randomHex()        # Prevent conflicts if 2 of the same get made
                if Config.files.find_one({'id': id}) is None:
                    filename = id
                    break

            if userid == None:
                userid = 0
            elif Config.users.find_one({'userid': userid}) == None:
                userid = 0

            # Calculate retention before the file is written, we'll grab the filesize here as it's needed for the equation.
            fileSize = round(float(file.content_length) / 1024, 2)

            if retention == None:
                retention = (Config.minretention+(-Config.maxretention + Config.minretention)*pow((fileSize / Config.maxFileSize -1), 3))
            elif retention > (Config.minretention+(-Config.maxretention + Config.minretention)*pow((fileSize / Config.maxFileSize -1), 3)):
                retention = (Config.minretention+(-Config.maxretention + Config.minretention)*pow((fileSize / Config.maxFileSize -1), 3))
        
            
            # Create the file
            with open(f"{os.path.abspath(Config.fileDir)}/{filename}", "wb") as f:
                f.write(file.read())

            date = time.mktime(datetime.datetime.now().timetuple())

            # Create the dictionary that we'll insert into the db
            data = {
                'id': id,
                'filename': filename,
                'filesize': fileSize,
                'retention': round(retention * 86400), # Convert to seconds
                'userid': userid,
                'ip': ip,
                'date': date,
                'expiry': date + round(retention * 86400)
            }

            # Add the data and verify its there.
            Config.files.insert_one(data)
            print(Config.files.find_one({"id": id}))

            return id, 200
        else:
            return random.choice(Errors.fileTooLarge), 400
    else:
        return random.choice(Errors.fileTypeNotAllowed), 400

def shortenURL(url, ip, userid, id, retention):
    # We're going to check whether the id variable has been filled
    # If not then we'll generate one. (The ID variable will be the same as the filename if not rejected earlier.)
    if id == None:
        while True:                 # Loop to find an available file ID
            id = randomHex()        # Prevent conflicts if 2 of the same get made
            if Config.files.find_one({'id': id}) is None:
                filename = id
                break

    if userid == None:
        userid = 0
    elif Config.users.find_one({'userid': userid}) == None:
        userid = 0

    if retention == None:
        retention = 14
    elif retention > 365:
        retention = 365
        
    data = {
        "id": id,
        "url": url,
        "userid": userid,
        "retention": retention,
        "ip": ip
    }

    Config.url.insert_one(data)
    print(Config.url.find_one({"id": data["id"]}))

    return id

def idInfo(id):
    # Check files and url for the ID
    if Config.files.find_one({"id": id}) is not None:
        check = Config.files.find_one({"id": id}, {'_id': False, "ip": False})
                                            # "ip": False removes the IP from the returned data.
    # If it's not there then check url
    elif Config.url.find_one({"id": id}) is not None:
        check = Config.url.find_one({"id": id}, {'_id': False, "ip": False}) 

    # Return the mongodb info about the file, removing IP if its present
    return check

def randomHex():
    hexRand = ''.join(secrets.choice('0123456789abcdef') for _ in range(6))
    return hexRand