#!/usr/bin/env python3
import os
import json
import time
import sys
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

def load_credentials(path):
    try:
        with open(path, encoding='utf-8') as f:
            return json.load(f)
    except Exception as e:
        print(f"Fehler beim Laden der Credentials: {e}", file=sys.stderr)
        sys.exit(1)

class DealfrontScraper:
    def __init__(self, driver, wait, username, password):
        self.driver = driver
        self.wait = wait
        self.username = username
        self.password = password

    def login_and_find_list(self, search_name):
        # 1) Login-Seite aufrufen
        self.driver.get("https://app.dealfront.com/login")
        # 2) Auf E-Mail-/Username-Feld warten, dann befüllen
        self.wait.until(EC.visibility_of_element_located(
            (By.CSS_SELECTOR, "input[type='email'], input[type='text']")
        ))
        email_in = self.driver.find_element(By.CSS_SELECTOR, "input[type='email'], input[type='text']")
        pwd_in   = self.driver.find_element(By.CSS_SELECTOR, "input[type='password']")
        email_in.clear(); email_in.send_keys(self.username)
        pwd_in.clear();   pwd_in.send_keys(self.password)
        # 3) Absenden
        self.driver.find_element(By.CSS_SELECTOR, "button[type='submit']").click()
        # 4) Auf den Quick-Link "Prospects finden" warten und klicken
        self.wait.until(EC.element_to_be_clickable((By.LINK_TEXT, "Prospects finden")))
        self.driver.find_element(By.LINK_TEXT, "Prospects finden").click()
        # 5) Auf die Liste der Suchen warten und dort die gewünschte anklicken
        self.wait.until(EC.element_to_be_clickable((By.LINK_TEXT, search_name)))
        self.driver.find_element(By.LINK_TEXT, search_name).click()
        # 6) Auf das erste Daten-Element warten, damit die Tabelle geladen ist
        first_locator = (By.CSS_SELECTOR, ".sticky-column a.t-highlight-text")
        self.wait.until(EC.visibility_of_element_located(first_locator))
        time.sleep(1)

    def extract_current_page_results(self):
        # kurz Implicit-Wait = 1 s, damit fehlende Elemente schnell übersprungen werden
        self.driver.implicitly_wait(1)

        # sicherstellen, dass mindestens eine Zeile im DOM ist
        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)

        results = []
        for i, row in enumerate(rows, 1):
            # Name
            name_elems = row.find_elements(By.CSS_SELECTOR, ".sticky-column a.t-highlight-text")
            if not name_elems:
                # kein Name-Element gefunden
                continue
            ne = name_elems[0]
            company_name = (ne.get_attribute("title") or ne.text).strip()

            # Website
            web_elems = row.find_elements(By.CSS_SELECTOR, "td:nth-of-type(3) a")
            if web_elems:
                website = web_elems[0].text.strip()
            else:
                td3 = row.find_elements(By.CSS_SELECTOR, "td:nth-of-type(3)")
                website = td3[0].text.strip() if td3 else ""

            results.append({'name': company_name, 'website': website})

        # Implicit-Wait wieder zurücksetzen (Standard 10 s)
        self.driver.implicitly_wait(10)
        return results

    def click_next_page(self) -> bool:
        # alle Pagination-Buttons: Prev, Zahlen, Next
        btns = self.driver.find_elements(By.CSS_SELECTOR, "nav.eb-pagination a.eb-pagination-button")
        if not btns:
            return False
        nxt = btns[-1]
        # falls disabled oder nicht klickbar, Schluss
        if (not nxt.is_enabled()) or ("disabled" in nxt.get_attribute("class")):
            return False

        # aktuelle Seite merken, Klick ausführen
        current = self.driver.find_element(
            By.CSS_SELECTOR, "nav.eb-pagination a.eb-pagination-button.active"
        ).text
        nxt.click()
        # warten, bis sich die aktive Seitenzahl ändert
        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, search_name):
        # Login + Navigation zur Search-List
        self.login_and_find_list(search_name)

        # Paginieren & extrahieren
        all_results = []
        while True:
            all_results.extend(self.extract_current_page_results())
            if not self.click_next_page():
                break
        return all_results

def main():
    creds = load_credentials("dealfront_credentials.json")
    username = creds.get("username")
    password = creds.get("password")
    # WebDriver initialisieren
    opts = Options()
    opts.add_argument("--headless")
    opts.add_argument("--no-sandbox")
    opts.add_argument("--disable-dev-shm-usage")
    driver = webdriver.Chrome(options=opts)
    wait = WebDriverWait(driver, 30)

    # Scraper starten
    scraper = DealfrontScraper(driver, wait, username, password)
    results = scraper.run("Facility Management")

    # Output-Ordner anlegen und als JSON speichern
    os.makedirs("output", exist_ok=True)
    out_file = os.path.join("output", "results.json")
    with open(out_file, "w", encoding="utf-8") as f:
        json.dump(results, f, ensure_ascii=False, indent=2)

    print(f"✅ Fertig: {len(results)} Einträge in '{out_file}'")
    driver.quit()

if __name__ == "__main__":
    main()