#!/usr/bin/env python3
import os
import sys
import json
import time
import logging

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.chrome.options import Options
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

# ────────────────────────────────────────────────────────────────
# Konstanten
LOGIN_URL          = "https://app.dealfront.com/login"
SEARCH_NAME        = "Facility Management"
CREDS_FILE         = "dealfront_credentials.json"
OUTPUT_DIR         = "output"
CHROMEDRIVER_PATH  = "/usr/bin/chromedriver"
LOG_FORMAT         = "%(asctime)s %(levelname)-8s %(message)s"
# ────────────────────────────────────────────────────────────────

logging.basicConfig(level=logging.INFO, format=LOG_FORMAT, force=True)
logger = logging.getLogger(__name__)
logging.getLogger("selenium").setLevel(logging.WARNING)

def load_creds(path):
    if not os.path.exists(path):
        logger.error("Credentials-Datei nicht gefunden: %s", path)
        sys.exit(1)
    with open(path, encoding="utf-8") as f:
        creds = json.load(f)
    u = creds.get("username")
    p = creds.get("password")
    if not u or not p:
        logger.error("Username oder Passwort fehlt in %s", path)
        sys.exit(1)
    return u, p

class DealfrontScraper:
    def __init__(self, driver, wait, user, pwd):
        self.driver   = driver
        self.wait     = wait
        self.user     = user
        self.pwd      = pwd

    def login_and_select_search(self):
        # 1) Login
        self.driver.get(LOGIN_URL)
        self.wait.until(EC.visibility_of_element_located(
            (By.CSS_SELECTOR, "input[type='email'], input[type='text']")
        ))
        self.driver.find_element(By.CSS_SELECTOR, "input[type='email'], input[type='text']").send_keys(self.user)
        self.driver.find_element(By.CSS_SELECTOR, "input[type='password']").send_keys(self.pwd)
        self.driver.find_element(By.CSS_SELECTOR, "button[type='submit']").click()

        # 2) Auf Sidebar-Liste warten
        ul_selector = "ul[data-userpilot-id='sidebar-searches-list']"
        self.wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, ul_selector)))

        # 3) Genaue Suche anklicken über das <div title="…">
        xpath = f"//ul[@data-userpilot-id='sidebar-searches-list']//div[@title='{SEARCH_NAME}']"
        elem = self.wait.until(EC.element_to_be_clickable((By.XPATH, xpath)))
        # JS-Click, damit alle Listener feuern
        self.driver.execute_script("arguments[0].click();", elem)

        # 4) Auf erste Datenzeile warten
        first = (By.CSS_SELECTOR, ".sticky-column a.t-highlight-text")
        self.wait.until(EC.visibility_of_element_located(first))
        time.sleep(1)

    def extract_page(self):
        # kurz Implicit-Wait 1 s, damit find_elements nicht blocken
        self.driver.implicitly_wait(1)
        rows_sel = (By.CSS_SELECTOR, "table#t-result-table tbody tr[id]")
        self.wait.until(EC.presence_of_all_elements_located(rows_sel))
        rows = self.driver.find_elements(*rows_sel)

        out = []
        for row in rows:
            ne = row.find_elements(By.CSS_SELECTOR, ".sticky-column a.t-highlight-text")
            if not ne:
                continue
            name = (ne[0].get_attribute("title") or ne[0].text).strip()

            we = row.find_elements(By.CSS_SELECTOR, "td:nth-of-type(3) a")
            if we:
                site = we[0].get_attribute("href").split("://")[-1].rstrip("/")
            else:
                td3 = row.find_elements(By.CSS_SELECTOR, "td:nth-of-type(3)")
                site = td3[0].text.strip() if td3 else ""

            out.append({"name": name, "website": site})

        # reset Implicit-Wait
        self.driver.implicitly_wait(10)
        return out

    def click_next(self):
        btns = self.driver.find_elements(By.CSS_SELECTOR, "nav.eb-pagination a.eb-pagination-button")
        if not btns:
            return False
        nxt = btns[-1]
        if not nxt.is_enabled() or "disabled" in nxt.get_attribute("class"):
            return False
        current = self.driver.find_element(
            By.CSS_SELECTOR, "nav.eb-pagination a.eb-pagination-button.active"
        ).text
        nxt.click()
        self.wait.until(lambda d: d.find_element(
            By.CSS_SELECTOR, "nav.eb-pagination a.eb-pagination-button.active"
        ).text != current)
        return True

    def run(self):
        self.login_and_select_search()
        all_data = []
        while True:
            all_data.extend(self.extract_page())
            if not self.click_next():
                break
        return all_data

def main():
    user, pwd = load_creds(CREDS_FILE)

    opts    = Options()
    opts.add_argument("--headless")
    opts.add_argument("--no-sandbox")
    opts.add_argument("--disable-dev-shm-usage")
    service = Service(CHROMEDRIVER_PATH)
    driver  = webdriver.Chrome(service=service, options=opts)
    wait    = WebDriverWait(driver, 30)

    try:
        scraper = DealfrontScraper(driver, wait, user, pwd)
        data    = scraper.run()
    finally:
        driver.quit()

    os.makedirs(OUTPUT_DIR, exist_ok=True)
    out = os.path.join(OUTPUT_DIR, "results.json")
    with open(out, "w", encoding="utf-8") as f:
        json.dump(data, f, ensure_ascii=False, indent=2)

    print(f"✅ Fertig: {len(data)} Einträge in {out}")

if __name__ == "__main__":
    main()