main.py

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.keys import Keys

from pyautogui import typewrite, press

from random import randint
import base64
from time import sleep
from sys import argv


class Publisher():

    def __init__(self, product_name):

        if (product_name == 'add_element'):
            self.add_product_info_to_database()
            return

        # product info got by the terminal argument
        product = self.get_product_info(product_name)
        # get product info raises an exception if no product is found, and ends the program

        self.publish(product)

    def publish(self, product_info):
        # few options to make it prettier
        chrome_options = webdriver.ChromeOptions()
        # chrome_options.add_argument('--headless')
        chrome_options.add_argument('--start-maximized')
        # chrome_options.add_argument('--log-level=OFF')

        # initialize the webdriver
        self.webdriver = webdriver.Chrome(options=chrome_options)

        # go to facebook.com
        self.webdriver.get('https://www.facebook.com')

        # email and password credentials ( already decrypted )
        credentials = self.get_login_info()

        # typing the email and password and logging in
        email = self.webdriver.find_element_by_id('email')
        email.send_keys(credentials.get('email'))

        password = self.webdriver.find_element_by_id('pass')
        password.send_keys(credentials.get('password') + Keys.ENTER)

        # wait for the page to load
        self.wait_for_selector('//div[@aria-label="Facebook"]', False)

        # choosing a random group
        groups = [
            'https://www.facebook.com/groups/424204217729696',
            'https://www.facebook.com/groups/mercadonegromontesclaros/',
            'https://www.facebook.com/groups/310280522400702/',
            'https://www.facebook.com/groups/432417496866854/'
        ]
        random_group = groups[randint(0, len(groups) - 1)]
        self.webdriver.get(random_group)

        # wait for the 'vender algo' selector, and click it
        self.wait_for_selector('//div[@aria-label="Vender algo"]', True)

        # wait for the 'Item a venda' selector
        self.wait_for_selector('//input[@aria-invalid="false"]', False)

        # typing the product info ( title, price, ... ), the product info is an object
        self.type_product_info(product_info)

        # wait for everything to finish uploading
        sleep(3)

        # clicking next ( go to group selection page )
        next_group_selector = '//div[@aria-label="Avançar"]'
        self.wait_for_selector(next_group_selector, True)

        # wait for the group animation
        sleep(1.25)

        # clicking on every group
        groups = self.webdriver.find_elements_by_xpath('//img[@width="24"]')

        # 1 until 13 are the groups i want to post things about
        # if you want to remove a group ( in some cases your groups aren't for selling, you can black-mail the group-index value )
        for i in range(1, 14):
            groups[i].click()

        # publishing it
        self.webdriver.find_element_by_xpath('//*[text()="Publicar"]').click()

        sleep(10)

        print('Done!')

    # also responsable for encryption and decryption
    def get_login_info(self):

        # email and password are encrypted saved into a hidden 'login_info.txt' file. also hidden through '.gitignore'
        file = open('.login_info.txt', 'r')
        lines = file.readlines()

        encrypted_email = lines[0]
        encrypted_password = lines[1]

        encrypted_email_bytes = encrypted_email.encode('ascii')
        encrypted_password_bytes = encrypted_password.encode('ascii')

        decrypted_email_bytes = base64.b64decode(encrypted_email_bytes)
        decrypted_password_bytes = base64.b64decode(encrypted_password_bytes)

        email = decrypted_email_bytes.decode('ascii')
        password = decrypted_password_bytes.decode('ascii')

        return {
            'email': email,
            'password': password
        }

    def wait_for_selector(self, selector='', should_click=False):

        while (True):
            try:
                if (should_click):
                    self.webdriver.find_element_by_xpath(selector).click()
                else:
                    self.webdriver.find_element_by_xpath(selector)

                break
            except:
                sleep(3)

    def type_product_info(self, product_info: {}):

        # elements = [title, price]
        elements_xpath = '//input[@type="text"]'
        elements = self.webdriver.find_elements_by_xpath(elements_xpath)

        elements[0].send_keys(product_info.get('title'))
        elements[1].send_keys(product_info.get('price'))

        description = self.webdriver.find_element_by_xpath('//textarea')
        description.send_keys(product_info.get('description'))

        self.send_images(product_info.get('images'))

    # perform all the clicks and operations, once the image_selector is open
    def send_images(self, images):

        text_selector = '//*[text()="Adicionar fotos"]'

        for i, image in enumerate(images):
            self.webdriver.find_element_by_xpath(text_selector).click()
            sleep(2)

            # first occurrence has to be setted up
            if (i == 0):
                press('left')
                for i in range(7):
                    press('down')
                press('enter')
                press('right')
                press('enter')
                sleep(1)

            typewrite(image)
            press('enter')
            sleep(2)

            text_selector = '//*[text()="Adicionar foto"]'

    def get_product_info(self, product_name=''):

        if (product_name == ''):
            raise 'Invalid Name'

        with open('products_info.txt', 'r') as file:
            lines = file.readlines()

            for i in range(len(lines)):
                lines[i] = lines[i].replace('{', '').replace('}', '')
                lines[i] = lines[i].replace("'", '')
                lines[i] = lines[i].split(', ')

                title = lines[i][0].split(': ')[1]

                # title equals the name of the product we want to publish
                if (product_name in title):

                    # proceed to get the rest of the information
                    price = lines[i][1].split(': ')[1]
                    description = lines[i][2].split(
                        ': ')[1].replace('\\n', '\n')

                    images = lines[i][3:]
                    for i in range(len(images)):
                        images[i] = images[i].replace('images: [', '')
                        images[i] = images[i].replace(']', '').strip()

                    return {
                        'title': title,
                        'price': price,
                        'description': description,
                        'images': images
                    }

            raise 'Name not found!'

    def add_product_info_to_database(self):

        # ask the user input, and format's it in only one line
        title = f"'title': '{input('Title: ').replace(':', '=')}'"
        price = f"'price': '{input('Price: ')}'"
        description = f"'description': '{input('Description: ').replace(':', '=')}'"
        images = f"'images': ['{input('Images: ')}']"

        with open('products_info.txt', 'a') as file:
            query = '{' + f'{title}, {price}, {description}, {images}' + '}'
            file.write(query + '\n')


if __name__ == '__main__':
    Publisher(' '.join(argv[1:]))