import threading
import time
import traceback
import sys

from base import VERSION, LoginException, Scraper, Udemy, scraper_dict
from colors import bw, by, fb, fg, fr

# DUCE-CLI

def create_scraping_thread(site: str):
    """Creates a separate thread for scraping each site."""
    code_name = scraper_dict[site]
    try:
        t = threading.Thread(target=getattr(scraper, code_name), daemon=True)
        t.start()

        while getattr(scraper, f"{code_name}_length") == 0:
            time.sleep(0.1)  # Avoid busy waiting

        if getattr(scraper, f"{code_name}_length") == -1:
            raise Exception(f"Error in: {site}")

        prev_progress = 0
        total = getattr(scraper, f"{code_name}_length")

        while not getattr(scraper, f"{code_name}_done"):
            time.sleep(0.5)
            current_progress = getattr(scraper, f"{code_name}_progress")
            percent = (current_progress / total) * 100 if total else 0
            print(f"[{site}] Progress: {percent:.2f}%")
            sys.stdout.flush()

        print(f"[{site}] Scraping Completed ✅")
        sys.stdout.flush()

    except Exception as e:
        error = getattr(scraper, f"{code_name}_error", traceback.format_exc())
        print(f"[ERROR] {site}: {error}")
        sys.stdout.flush()

##########################################

udemy = Udemy("cli")
udemy.load_settings()
login_title, main_title = udemy.check_for_update()

if "Update" in login_title:
    print(by + fr + login_title)
    sys.stdout.flush()

############## MAIN #############

login_successful = False
while not login_successful:
    try:
        if udemy.settings["use_browser_cookies"]:
            udemy.fetch_cookies()
            login_method = "Browser Cookies"
        elif udemy.settings["email"] and udemy.settings["password"]:
            email, password = udemy.settings["email"], udemy.settings["password"]
            login_method = "Saved Email and Password"
        else:
            email = input("Email: ")
            password = input("Password: ")
            login_method = "Email and Password"

        print(fb + f"Trying to login using {login_method}")
        sys.stdout.flush()

        if "Email" in login_method:
            udemy.manual_login(email, password)

        udemy.get_session_info()
        if "Email" in login_method:
            udemy.settings["email"], udemy.settings["password"] = email, password
        login_successful = True
    except LoginException as e:
        print(fr + f"Login Failed: {e}")
        sys.stdout.flush()
        if "Browser" in login_method:
            print("Can't login using cookies. Switching to manual login.")
            udemy.settings["use_browser_cookies"] = False
        elif "Email" in login_method:
            udemy.settings["email"], udemy.settings["password"] = "", ""

udemy.save_settings()

print(fg + f"Logged in as {udemy.display_name}")
sys.stdout.flush()

user_dumb = udemy.is_user_dumb()

if user_dumb:
    print(bw + fr + "Invalid user settings. Exiting...")
    sys.stdout.flush()
    exit()

scraper = Scraper(udemy.sites)

try:
    print("🔎 Starting Course Scraping...")
    sys.stdout.flush()

    udemy.scraped_data = scraper.get_scraped_courses(create_scraping_thread)
    time.sleep(0.5)

    print("\n✅ Scraping Completed. Starting Enrollment...\n")
    sys.stdout.flush()

    udemy.start_enrolling()

    udemy.print(
        f"\n✔ Successfully Enrolled: {udemy.successfully_enrolled_c}", color="green"
    )
    udemy.print(
        f"💰 Amount Saved: {round(udemy.amount_saved_c,2)} {udemy.currency.upper()}",
        color="light green",
    )
    udemy.print(f"🔵 Already Enrolled: {udemy.already_enrolled_c}", color="blue")
    udemy.print(f"⚠️ Excluded Courses: {udemy.excluded_c}", color="yellow")
    udemy.print(f"❌ Expired Courses: {udemy.expired_c}", color="red")

    sys.stdout.flush()

except Exception as e:
    error = traceback.format_exc()
    print(f"\n[ERROR] {error}\n")
    sys.stdout.flush()

# ✅ Remove `input("Press Enter to exit...")` to prevent blocking in Flask
print("✅ Process Completed!")
sys.stdout.flush()