"""
Student Navigation Page Object Model

Handles student navigation header including profile dropdown and logout.
Scope: student_nav
"""
import time
from selenium.webdriver.common.by import By
from pages.base_page import BasePage
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from config.config import SHORT_WAIT, BASE_URL


class StudentNavPage(BasePage):
    """Page Object for Student Navigation Header"""
    
    # Navigation links
    DASHBOARD_LINK = (By.CSS_SELECTOR, "[data-testid='student_nav__dashboard_link']")
    ASSESSMENTS_LINK = (By.CSS_SELECTOR, "[data-testid='student_nav__assessments_link']")
    
    # Profile dropdown button (user icon with dropdown) - IMPLEMENTED ✅
    PROFILE_BUTTON = (By.CSS_SELECTOR, "[data-testid='student_nav__profile_button']")
    
    # Profile dropdown menu items - IMPLEMENTED ✅
    PROFILE_DROPDOWN = (By.CSS_SELECTOR, "[data-testid='student_nav__profile_dropdown']")
    EDIT_PROFILE_BUTTON = (By.CSS_SELECTOR, "[data-testid='student_nav__edit_profile_button']")
    RESET_PASSWORD_BUTTON = (By.CSS_SELECTOR, "[data-testid='student_nav__reset_password_button']")
    SIGN_OUT_BUTTON = (By.CSS_SELECTOR, "[data-testid='student_nav__sign_out_button']")
    
    def __init__(self, driver):
        """Initialize Student Navigation Page"""
        super().__init__(driver)
    
    def click_dashboard(self):
        """Click Dashboard navigation link"""
        self.click_element(self.DASHBOARD_LINK)
        self.wait.wait_for_url_contains("/dashboard")
    
    def click_assessments(self):
        """Click Assessments navigation link"""
        self.click_element(self.ASSESSMENTS_LINK)
        self.wait.wait_for_url_contains("/assessments")
    
    def click_profile_button(self):
        """
        Click profile button to open dropdown
        
        IMPORTANT: Ensures no modals are blocking (password reset or profile incomplete).
        Uses robust modal detection with fallback mechanisms.
        """
        # First, ensure no modals are blocking the button
        from pages.mandatory_reset_page import MandatoryResetPage
        from pages.profile_incomplete_page import ProfileIncompletePage
        from selenium.webdriver.common.by import By
        from selenium.webdriver.support.ui import WebDriverWait
        from selenium.webdriver.support import expected_conditions as EC
        from config.config import SHORT_WAIT, MEDIUM_WAIT
        
        reset_page = MandatoryResetPage(self.driver)
        profile_incomplete = ProfileIncompletePage(self.driver)
        
        # Handle password reset modal if present
        if reset_page.is_modal_present():
            print("⚠️  Password reset modal blocking - handling automatically...")
            from utils.password_tracker import password_tracker
            from config.config import TEST_PASSWORD, TEST_NEW_PASSWORD
            current_password = password_tracker.get_password("", TEST_PASSWORD)
            reset_page.reset_password(
                current_password=current_password,
                new_password=TEST_NEW_PASSWORD,
                confirm_password=TEST_NEW_PASSWORD,
                student_cpid=""
            )
            # Wait for modal to fully disappear
            self._wait_for_modal_overlays_to_disappear()

        # Handle profile incomplete modal if present - click "Complete Profile Now" to dismiss
        if profile_incomplete.is_modal_present():
            print("⚠️  Profile incomplete modal blocking - clicking 'Complete Profile Now'...")
            profile_incomplete.click_complete()
            # Wait for navigation and modal to disappear
            self._wait_for_modal_overlays_to_disappear()
        
        # Final check: Wait for any remaining modal overlays to disappear
        self._wait_for_modal_overlays_to_disappear()
        
        # Verify no modals are blocking before clicking
        max_retries = 3
        for attempt in range(max_retries):
            if not reset_page.is_modal_present() and not profile_incomplete.is_modal_present():
                break
            if attempt < max_retries - 1:
                print(f"⚠️  Modals still present, waiting... (attempt {attempt + 1}/{max_retries})")
                time.sleep(1)
                self._wait_for_modal_overlays_to_disappear()
            else:
                raise Exception("Modals are still blocking profile button after multiple attempts")
        
        # Use data-testid locator (implemented ✅)
        profile_btn = self.wait.wait_for_element_clickable(self.PROFILE_BUTTON)
        self.driver.execute_script("arguments[0].scrollIntoView({block: 'center'});", profile_btn)
        time.sleep(0.2)  # Brief wait for scroll
        
        # Try clicking with retry mechanism
        try:
            profile_btn.click()
        except Exception as e:
            # If click is intercepted, wait a bit more and try JavaScript click
            if "click intercepted" in str(e).lower():
                print("⚠️  Click intercepted, waiting for overlays and retrying with JavaScript...")
                self._wait_for_modal_overlays_to_disappear()
                time.sleep(0.5)
                self.driver.execute_script("arguments[0].click();", profile_btn)
            else:
                raise
        
        # Wait for dropdown to appear using data-testid (implemented ✅)
        time.sleep(0.3)  # Brief wait for React state to update
        try:
            self.wait.wait_for_element_visible(self.SIGN_OUT_BUTTON)
        except:
            # Check if we're already logged out
            current_url = self.driver.current_url
            from config.config import BASE_URL
            if "/login" in current_url or current_url.rstrip("/") == BASE_URL.rstrip("/"):
                return  # Already logged out
            raise Exception(f"Profile dropdown did not open. Current URL: {current_url}")
    
    def _wait_for_modal_overlays_to_disappear(self):
        """
        Wait for all modal overlays to disappear.
        
        Checks for common modal overlay patterns that might block clicks.
        """
        from selenium.webdriver.common.by import By
        from selenium.webdriver.support.ui import WebDriverWait
        from selenium.webdriver.support import expected_conditions as EC
        from config.config import SHORT_WAIT
        
        # Check for common modal overlay selectors (high z-index overlays)
        modal_overlay_selectors = [
            "div.fixed.inset-0.bg-black\\/60.z-\\[99999\\]",  # Password reset modal
            "div.fixed.inset-0.bg-black\\/50.z-\\[9999\\]",  # Profile incomplete modal
            "div[class*='fixed'][class*='inset-0'][class*='bg-black'][class*='z-[99999]']",  # Variant 1
            "div[class*='fixed'][class*='inset-0'][class*='bg-black'][class*='z-[9999]']",  # Variant 2
            "div.fixed.inset-0[class*='z-[99999]']",  # Simplified high z-index
            "div.fixed.inset-0[class*='z-[9999]']",  # Simplified medium-high z-index
        ]
        
        for selector in modal_overlay_selectors:
            try:
                WebDriverWait(self.driver, SHORT_WAIT).until(
                    EC.invisibility_of_element_located((By.CSS_SELECTOR, selector))
                )
            except:
                # Overlay might not exist or already gone, continue
                pass
    
    def click_sign_out(self):
        """
        Click Sign Out button in profile dropdown
        
        IMPORTANT: Profile dropdown must be open first (call click_profile_button).
        Ensures no modals are blocking before clicking.
        """
        # Ensure no modals are blocking before clicking sign out
        from pages.mandatory_reset_page import MandatoryResetPage
        from pages.profile_incomplete_page import ProfileIncompletePage
        
        reset_page = MandatoryResetPage(self.driver)
        profile_incomplete = ProfileIncompletePage(self.driver)
        
        # Wait for any modals to disappear
        max_retries = 3
        for attempt in range(max_retries):
            if not reset_page.is_modal_present() and not profile_incomplete.is_modal_present():
                break
            if attempt < max_retries - 1:
                print(f"⚠️  Modals detected before sign out, waiting... (attempt {attempt + 1}/{max_retries})")
                self._wait_for_modal_overlays_to_disappear()
                time.sleep(1)
            else:
                raise Exception("Modals are still blocking sign out button after multiple attempts")
        
        # Final wait for modal overlays
        self._wait_for_modal_overlays_to_disappear()
        
        # Use data-testid locator (implemented ✅)
        signout_btn = self.wait.wait_for_element_clickable(self.SIGN_OUT_BUTTON)
        self.driver.execute_script("arguments[0].scrollIntoView({block: 'center'});", signout_btn)
        time.sleep(0.2)
        
        # Try clicking with retry mechanism
        try:
            signout_btn.click()
        except Exception as e:
            # If click is intercepted, wait for overlays and try JavaScript click
            if "click intercepted" in str(e).lower():
                print("⚠️  Sign out click intercepted, waiting for overlays and retrying with JavaScript...")
                self._wait_for_modal_overlays_to_disappear()
                time.sleep(0.5)
                self.driver.execute_script("arguments[0].click();", signout_btn)
            else:
                raise
        
        # Wait for redirect to login page
        self.wait.wait_for_url_contains("/")  # Redirects to login (root)
    
    def logout(self):
        """
        Complete logout flow: Open profile dropdown and click Sign Out
        
        This is the main method to use for logout.
        """
        self.click_profile_button()
        self.click_sign_out()