from google.cloud import pubsub_v1
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
import json
import time
import os
from concurrent.futures import TimeoutError

os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "C:/Users/Karen/AppData/Roaming/gcloud/application_default_credentials.json"

# Configure the Selenium driver options
options = Options()
options.add_argument('--disable-gpu')
driver = webdriver.Chrome(options=options)

# Set up Pub/Sub subscription
project_id = "fp-20230425"
subscription_name = "fp-subscription-zipcodes"
subscriber = pubsub_v1.SubscriberClient()
subscription_path = subscriber.subscription_path(project_id, subscription_name)
timeout = 5

# Load the product page and extract the __NEXT_DATA__ data
url = 'https://www.sayweee.com/en/product/Want-Want-Senbei-Rice-Crackers/17119'
driver.get(url)
time.sleep(5)
'''
next_data_element = driver.find_element(By.XPATH, "//script[@type='application/ld+json']")
if next_data_element is not None:
    next_data_text = next_data_element.get_attribute('innerHTML')
    next_data_start_index = next_data_text.index('{')
    next_data_end_index = next_data_text.rindex('}') + 1
    next_data_json = next_data_text[next_data_start_index:next_data_end_index]
    next_data = json.loads(next_data_json)
else:
    print('__NEXT_DATA__ element not found')
'''
    
# Define callback function for Pub/Sub messages
def callback(message):
    # Extract zip code from message data
    zip_code = message.data.decode('utf-8')
    print(f"Received zip code: {zip_code}")
    
    # Enter zip code in the input field and click the "Check" button
    zip_input = driver.find_element(By.XPATH, '/html/body/div[2]/div/header/div[3]/div/div/div[2]/div[1]/div/div/div[1]')
    zip_input.clear()
    zip_input.send_keys(zip_code)
    check_button = driver.find_element(By.XPATH, '/html/body/div[5]/div/div[2]/div/div[2]/div[2]/div/div[1]/form/div/div/div[1]/div/div/div[3]/div')
    check_button.click()
    time.sleep(2)
    
    # Extract the price of rice crackers for this zip code
    try:
        '''
        price_element = driver.find_element(By.XPATH, '/html/body/div[2]/div/div[1]/div[1]/div/div/div[2]/div[2]/div[1]/div[4]/div[1]/div')
        price = price_element.text.strip()[1:]
        print(price)
        '''
        next_data_element = driver.find_element(By.XPATH, "//script[@type='application/ld+json']")
        next_data_text = next_data_element.get_attribute('innerHTML')
        next_data_start_index = next_data_text.index('{')
        next_data_end_index = next_data_text.rindex('}') + 1
        next_data_json = next_data_text[next_data_start_index:next_data_end_index]
        next_data = json.loads(next_data_json)
        price = next_data['offers']['price']
    # Print the price
        print(price)
    except:
        price = 'Price not found'
    finally:
        message.ack()  # acknowledge receipt of message

# Start receiving messages
streaming_pull_future = subscriber.subscribe(subscription_path, callback=callback)
print(f'Started receiving messages from subscription {subscription_path}...')

# Wrap subscriber in a 'with' block to automatically call close() when done.
with subscriber:
    try:
        # When `timeout` is not set, result() will block indefinitely,
        # unless an exception is encountered first.
        streaming_pull_future.result(timeout=timeout)
    except TimeoutError:
        streaming_pull_future.cancel()  # Trigger the shutdown.
        streaming_pull_future.result()  # Block until the shutdown is complete.

# Keep the script running indefinitely to continue receiving messages
while True:
    time.sleep(10)