from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException, NoSuchElementException
import time
import pandas as pd
import os
import logging

logger = logging.getLogger(__name__)

def comprehensive_scroll(driver):
    """Scroll until no more new content is loaded"""
    try:
        last_height = driver.execute_script("return document.body.scrollHeight")
        while True:
            driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
            time.sleep(3)
            
            new_height = driver.execute_script("return document.body.scrollHeight")
            if new_height == last_height:
                break
            last_height = new_height
    except Exception as e:
        logger.error(f"Scroll sırasında hata: {str(e)}")

def scrape_reviews(url):
    """URL'den yorumları çeken fonksiyon"""
    driver = None
    try:
        # Data directory oluştur
        data_directory = "data"
        if not os.path.exists(data_directory):
            os.makedirs(data_directory)

        # Chrome options ayarları
        chrome_options = webdriver.ChromeOptions()
        chrome_options.add_argument('--headless')
        chrome_options.add_argument('--disable-gpu')
        chrome_options.add_argument('--no-sandbox')
        chrome_options.add_argument('--disable-dev-shm-usage')
        chrome_options.add_argument("--window-size=1920,1080")

        # Linux için ChromeDriver ayarı
        try:
            # Önce /usr/local/bin/chromedriver'ı dene
            service = Service('/usr/local/bin/chromedriver')
            driver = webdriver.Chrome(service=service, options=chrome_options)
        except:
            try:
                # Eğer başarısız olursa /usr/bin/chromedriver'ı dene
                service = Service('/usr/bin/chromedriver')
                driver = webdriver.Chrome(service=service, options=chrome_options)
            except:
                # Son olarak PATH'teki chromedriver'ı dene
                service = Service('chromedriver')
                driver = webdriver.Chrome(service=service, options=chrome_options)
        
        logger.info(f"URL'ye erişiliyor: {url}")
        driver.get(url)
        
        # Çerez popup'ını kabul et
        try:
            WebDriverWait(driver, 10).until(
                EC.element_to_be_clickable((By.ID, 'onetrust-accept-btn-handler'))
            ).click()
            logger.info("Çerez popup'ı kabul edildi")
        except TimeoutException:
            logger.warning("Çerez popup'ı bulunamadı veya tıklanamadı")

        logger.info("Sayfa kaydırılıyor...")
        comprehensive_scroll(driver)
        
        logger.info("Yorumlar toplanıyor...")
        comment_elements = driver.find_elements(By.XPATH, '/html/body/div[1]/div[4]/div/div/div/div/div[3]/div/div/div[3]/div[2]/div')
        total_comments = len(comment_elements)
        logger.info(f"Toplam {total_comments} yorum bulundu")

        data = []
        for i in range(1, total_comments + 1):
            try:
                username_xpath = f'/html/body/div[1]/div[4]/div/div/div/div/div[3]/div/div/div[3]/div[2]/div[{i}]/div[1]/div[2]/div[1]'
                username = driver.find_element(By.XPATH, username_xpath).text
            except NoSuchElementException:
                username = "N/A"

            try:
                comment_xpath = f'/html/body/div[1]/div[4]/div/div/div/div/div[3]/div/div/div[3]/div[2]/div[{i}]/div[2]/p'
                comment = driver.find_element(By.XPATH, comment_xpath).text
            except NoSuchElementException:
                comment = "N/A"

            try:
                date_xpath = f'/html/body/div[1]/div[4]/div/div/div/div/div[3]/div/div/div[3]/div[2]/div[{i}]/div[1]/div[2]/div[2]'
                date = driver.find_element(By.XPATH, date_xpath).text
            except NoSuchElementException:
                date = "N/A"

            try:
                star_xpath_base = f'/html/body/div[1]/div[4]/div/div/div/div/div[3]/div/div/div[3]/div[2]/div[{i}]/div[1]/div[1]/div'
                full_stars = driver.find_elements(By.XPATH, f"{star_xpath_base}/div[@class='star-w']/div[@class='full'][@style='width: 100%; max-width: 100%;']")
                star_count = len(full_stars)
            except NoSuchElementException:
                star_count = 0

            data.append({
                "Kullanıcı_id": i,
                "Kullanıcı Adı": username,
                "Yorum": comment,
                "Tarih": date,
                "Yıldız Sayısı": star_count
            })

            if i % 10 == 0:
                logger.info(f"{i}/{total_comments} yorum toplandı")

        df = pd.DataFrame(data)
        
        # Geçici dosya olarak kaydet
        temp_file = os.path.join(data_directory, 'temp_comments.csv')
        df.to_csv(temp_file, index=False, encoding='utf-8-sig')
        logger.info(f"Veriler {temp_file} dosyasına kaydedildi")
        
        return df

    except Exception as e:
        logger.error(f"Veri çekme sırasında hata: {str(e)}")
        return pd.DataFrame()
        
    finally:
        if driver:
            driver.quit()
            logger.info("Chrome driver kapatıldı")
        # Geçici dosyayı sil
        temp_file = os.path.join("data", 'temp_comments.csv')
        if os.path.exists(temp_file):
            os.remove(temp_file)
            logger.info("Geçici dosya silindi")