/**
 * Legal Pages Helper
 *
 * Dynamically injects a common header (topbar) and language-aware footer
 * into all 6 legal pages to eliminate HTML duplication.
 *
 * Footer content depends on page language (EN vs RO).
 * Language links use event delegation so they work on injected elements.
 */
(function(){
	"use strict";

	var LANG_KEY = "legalLang";

	/**
	 * Detect browser language preference (EN or RO).
	 */
	function browserLang(){
		var lang = (navigator.language || navigator.userLanguage || 'en').toLowerCase();
		return lang.indexOf('ro') === 0 ? 'ro' : 'en';
	}

	/**
	 * Get stored language preference, fall back to browser detection.
	 */
	function getLang(){
		return localStorage.getItem(LANG_KEY) || browserLang();
	}

	/**
	 * Build URL to alternate language page.
	 * Supports both -en.html and -ro.html naming patterns.
	 */
	function targetPage(current, lang){
		if(current.indexOf('-ro.html') !== -1) return current.replace('-ro.html', '-' + lang + '.html');
		if(current.indexOf('-en.html') !== -1) return current.replace('-en.html', '-' + lang + '.html');
		return current;
	}

	/**
	 * Get current page base name (terms, privacy, cookies).
	 */
	function basePage(){
		var path = window.location.pathname;
		if(path.indexOf('terms') !== -1) return 'terms';
		if(path.indexOf('privacy') !== -1) return 'privacy';
		if(path.indexOf('cookies') !== -1) return 'cookies';
		return '';
	}

	/**
	 * Detect page language (EN or RO).
	 */
	function pageLang(){
		return window.location.pathname.indexOf('-ro.html') !== -1 ? 'ro' : 'en';
	}

	/**
	 * Inject topbar with logo and language switcher.
	 */
	function injectTopbar(){
		var base = basePage();
		var lang = pageLang();
		var html = '<div class="topbar">' +
			'<a class="brand" href="/" aria-label="' + (lang === 'ro' ? 'Înapoi' : 'Back') + '">' +
			'<span class="brand-mark"><img src="/img/myai-logo.svg" alt="MyAi.ro"></span>' +
			'<span><span class="brand-text">' + (lang === 'ro' ? 'Înapoi' : 'Back') + '</span></span>' +
			'</a>' +
			'<div class="switcher">' +
			'<a href="' + base + '-ro.html" class="lang-link ' + (lang === 'ro' ? 'active' : '') + '" data-lang="ro" aria-label="Română">' +
			'<img src="/img/flags/ro.svg" alt="Română">' +
			'</a>' +
			'<a href="' + base + '-en.html" class="lang-link ' + (lang === 'en' ? 'active' : '') + '" data-lang="en" aria-label="English">' +
			'<img src="/img/flags/en.svg" alt="English">' +
			'</a>' +
			'</div>' +
			'</div>';
		$('.wrap').prepend(html);
	}

	/**
	 * Inject language-aware footer.
	 * EN: "©2026 myAi. All rights reserved."
	 * RO: "©2026 myAi. Toate drepturile sunt rezervate."
	 */
	function injectFooter(){
		var lang = pageLang();
		var base = basePage();
		var copyrightText = lang === 'ro' ? '©2026 myAi. Toate drepturile sunt rezervate.' : '©2026 myAi. All rights reserved.';
		var linksHtml = '';
		if(lang === 'ro'){
			linksHtml = '<a href="terms-ro.html">Termeni și condiții</a>' +
			            '<a href="privacy-ro.html">Politica de confidențialitate</a>' +
			            '<a href="cookies-ro.html">Politica de COOKIES</a>';
		} else {
			linksHtml = '<a href="terms-en.html">Terms and Conditions</a>' +
			            '<a href="privacy-en.html">Privacy Policy</a>' +
			            '<a href="cookies-en.html">Cookies Policy</a>';
		}
		var html = '<div class="footer">' +
			'<small>' + copyrightText + '</small>' +
			'<div class="footer-links">' + linksHtml + '</div>' +
			'</div>';
		$('.wrap').append(html);
	}

	/**
	 * Initialize language persistence and topbar injection.
	 */
	function init(){
		localStorage.setItem(LANG_KEY, pageLang());
		injectTopbar();
		injectFooter();
	}

	/**
	 * Handle language link clicks with event delegation.
	 * Works on both static and injected links.
	 */
	document.addEventListener('click', function(e){
		var link = e.target.closest('.lang-link');
		if(!link) return;
		e.preventDefault();
		localStorage.setItem(LANG_KEY, link.getAttribute('data-lang'));
		window.location.href = targetPage(window.location.pathname, link.getAttribute('data-lang'));
	});

	// Run on page load
	if(document.readyState === 'loading'){
		document.addEventListener('DOMContentLoaded', init);
	} else {
		init();
	}
})();