var offsetSize = (function() {
	if (mw.config.get('skin') === 'timeless') {
		return 55;
	} else {
		return 0;
	}
})();
var scrollBehaviorAvaliable = (function() {
    var v = navigator.userAgent.match(/Chrome\/(?<version>\S+)/);
    if (v && v.groups.version) { // 检测chrome版本
        var chromeVersion = parseInt(v.groups.version);
        return chromeVersion >= 61;
    } else { // 非chrome
        return true;
    }
})();

function scrollToAnchor(link){
    var target = $(link.replace(/\./g, '\\.'));
	if(target.length > 0){
		target.click(function(){ return false; });
		var position = target.offset().top - offsetSize;
		if (scrollBehaviorAvaliable) {
			window.scrollTo({
				top: position,
				behavior: 'smooth'
			});
		} else {
			$('html, body').animate({
				scrollTop: position,
			}, 500);
		}
        return false;
	} else {
	    return true;
	}
}

function incPageVisited(){
	var pageVisited = sessionStorage.getItem('pageVisited');
	if(pageVisited){
		pageVisited = parseInt(pageVisited) + 1;
	} else {
		pageVisited = 1;
	}
	sessionStorage.setItem('pageVisited', pageVisited.toString());
}

incPageVisited();

function getPageVisited(){
	var pageVisited = sessionStorage.getItem('pageVisited');
	if(pageVisited){
		return parseInt(pageVisited);
	} else {
		return 1;
	}
}

function setDismissLoginPrompt(){
	var time = Date.now() / 1000;
	localStorage.setItem('dismissLoginPrompt', time.toFixed(0));
}

function shouldShowLoginPrompt(){
	if(!mw.user.isAnon()){ //用户已登录
		setDismissLoginPrompt();
		return false;
	}
	
	if(getPageVisited() < 4){ // 直到打开第四个页面，才弹出注册邀请
		return false;
	}

	if(mw.config.get('wgCanonicalNamespace') === 'Special' &&
		['Userlogin', 'CreateAccount', 'Userlogout'].indexOf(mw.config.get('wgCanonicalSpecialPageName')) >= 0){ //屏蔽登录和注册页面
		return false;
	}

	var time = Date.now() / 1000;
	var expire = 86400 * 7; //7天不提醒
	var dismissTime = localStorage.getItem('dismissLoginPrompt');
	if(dismissTime !== null){
		dismissTime = parseInt(dismissTime);
		if(dismissTime + expire > time){
			return false;
		}
	}

	return true;
}

function setDismissAdsPrompt(){
	var time = Date.now() / 1000;
	localStorage.setItem('dismissAdsPrompt', time.toFixed(0));
}

function shouldShowAdsPrompt(){
	if(mw.config.get('wgCanonicalNamespace') === 'Special' && mw.config.get('wgAction') === 'view'){ // 仅查看页面弹出
		return false;
	}

	var time = Date.now() / 1000;
	var expire = 86400 * 7; //7天内不提醒
	var dismissTime = localStorage.getItem('dismissAdsPrompt');
	if(dismissTime !== null){
		dismissTime = parseInt(dismissTime);
		if(dismissTime + expire > time){
			return false;
		}
	}

	return true;
}

$(function(){
	//锚链接偏移
	$('body').on('click', 'a', function() {
		var href = $(this).prop('href');
		var path = location.origin + location.pathname;
		if(typeof href === 'string' && href.startsWith(path) && href[path.length] == '#' && href.length > path.length + 1){
			return scrollToAnchor(href.substring(path.length));
		}
	});
	
	// 替换搜索输入框的中文字符
	function replaceChars(dom){
		if(dom.value.indexOf('：') !== -1 || dom.value.indexOf('`') !== -1){
			var selectionStart = dom.selectionStart,
			    selectionEnd = dom.selectionEnd;
			
			dom.value = dom.value.replace(/：/g, ':').replace(/`/g, '·');
			dom.setSelectionRange(selectionStart, selectionEnd);
		}
	}
	$('#searchInput, #wpNewTitleMain input, #searchText input[name="search"]').on('input', function(e){
		if(!e.originalEvent.isComposing){
			replaceChars(this);
		}
	});
	$('#searchInput, #wpNewTitleMain input, #searchText input[name="search"]').on('compositionend', function(e){
		replaceChars(this);
	});

	// 初始化dialog
	var messageDialog = new OO.ui.MessageDialog();
    var windowManager = new OO.ui.WindowManager();
	window._isekaiMessageDialog = messageDialog;
	window._isekaiWindowManager = windowManager;
    $('body').append(windowManager.$element);
    windowManager.addWindows([messageDialog]);

	// 替换手机端编辑按钮
	if (mw.config.get('skin') === 'minerva') {
		$('#ca-edit, .mw-editsection a').click(function(e) {
			e.preventDefault();

			var cancelBtn = new OO.ui.ActionWidget({
				action: 'cancel',
				label: mw.message('isekai-editor-prompt-btn-cancel').text(),
				flags: ['safe', 'close'],
			});

			var useMobileEditorBtn = new OO.ui.ActionWidget({
				action: 'mobileEditor',
				label: mw.message('isekai-editor-prompt-btn-use-mobile').text(),
			});

			var useDesktopEditorBtn = new OO.ui.ActionWidget({
				action: 'desktopEditor',
				label: mw.message('isekai-editor-prompt-btn-use-desktop').text(),
				flags: ['primary', 'progressive'],
			});
			
			useMobileEditorBtn.on('click', function() {
				location.href = e.target.href;
			});

			useDesktopEditorBtn.on('click', function() {
				var title = new mw.Title(mw.config.get('wgTitle'), mw.config.get('wgNamespaceNumber'));
				location.href = title.getUrl({ veaction: 'edit', mobileaction: 'toggle_view_desktop' });
			});

			windowManager.openWindow(messageDialog, {
				message: mw.message('isekai-editor-prompt-content').parse(),
				actions: [cancelBtn, useMobileEditorBtn, useDesktopEditorBtn],
			});
		});
	}

	//显示登录引导框
    if (shouldShowLoginPrompt()) {
		var cancelBtn = new OO.ui.ActionWidget({
			action: 'cancel',
			label: mw.message('isekai-login-prompt-btn-cancel').text(),
			flags: ['safe', 'close'],
		});
	
		var registerBtn = new OO.ui.ActionWidget({
			action: 'register',
			label: mw.message('isekai-login-prompt-btn-createaccount').text(),
		});
	
		var loginBtn = new OO.ui.ActionWidget({
			action: 'login',
			active: true,
			label: mw.message('nav-login-createaccount').text(),
			flags: ['primary', 'progressive'],
		});
	
		cancelBtn.on('click', function(){
			setDismissLoginPrompt();
		});
	
		registerBtn.on('click', function(){
			location.href = mw.util.getUrl('Special:CreateAccount', {returnto: mw.config.get('wgPageName')});
		});
	
		loginBtn.on('click', function(){
			location.href = mw.util.getUrl('Special:Userlogin', {returnto: mw.config.get('wgPageName')});
		});

        windowManager.openWindow(messageDialog, {
            message: mw.message('isekai-login-prompt-content').parse(),
            actions: [cancelBtn, loginBtn], // 去除注册按钮
        });
    }

	// 广告存活检测
	if (mw.config.get('wgIsekaiShowAds')) {
		setTimeout(function() {
			if ($('#ad-dec-7kVsyacCEKVGBLOiLVQ').length === 0) {
				if (shouldShowAdsPrompt()) {
					//显示广告引导框
					var cancelBtn = new OO.ui.ActionWidget({
						action: 'cancel',
						label: mw.message('isekai-ads-prompt-btn-cancel').text(),
						active: true,
						flags: ['safe', 'close'],
					});
		
					cancelBtn.on('click', function(){
						setDismissAdsPrompt();
					});
		
					windowManager.openWindow(messageDialog, {
						title: mw.message('isekai-ads-prompt-title').parse(),
						message: '',
						size: 'medium',
						actions: [cancelBtn],
					});
					messageDialog.$body.find('> .oo-ui-messageDialog-container > .oo-ui-messageDialog-text > .oo-ui-messageDialog-message')
						.append(mw.message('isekai-ads-prompt-content').parse());
				}
			}
		}, 500);
	}

	/* 展示Google的Adblock提示，但是在大陆貌似没有用
	if (mw.config.get('wgIsekaiShowAds')) {
		window.googlefc = window.googlefc || {};
		window.googlefc.callbackQueue = window.googlefc.callbackQueue || [];
		googlefc.controlledMessagingFunction = (message) => {
			if (shouldShowAdsPrompt()) {
				message.proceed(true);
			} else {
				message.proceed(false);
			}
		};

		function signalGooglefcPresent() {
			if (!window.frames['googlefcPresent']) {
				if (document.body) {
					const iframe = document.createElement('iframe');
					iframe.style = 'width: 0; height: 0; border: none; z-index: -1000; left: -1000px; top: -1000px;';
					iframe.style.display = 'none';
					iframe.name = 'googlefcPresent';
					document.body.appendChild(iframe);
					setDismissAdsPrompt();
				} else {
					window.requestAnimationFrame(signalGooglefcPresent);
				}
			}
		}
		signalGooglefcPresent();
	}*/

	// 显示用户头像
	if(mw.config.get('wgNamespaceNumber') === 2 && mw.config.get('wgAvatarTemplate')) {
		$('<div id="userHeading" class="user-heading"></div>').insertAfter("#firstHeading");
		var firstHeading = $("#firstHeading");
		var userHeading = $("#userHeading");
		userHeading.append(firstHeading);
		var avatarUrl = mw.config.get('wgAvatarTemplate')
			.replace(/\{username\}/g, encodeURI(mw.config.get('wgTitle')));
		var avatarAlt = mw.config.get('wgRelevantPageName');
		userHeading.append(`<img src="${avatarUrl}" alt="${avatarAlt}" class="user-avatar">`);
	}

	// 更改ContentTranslation的机器翻译名字
	if (mw.cx && mw.cx.MachineTranslationManager) {
		let _getProviderLabel = mw.cx.MachineTranslationManager.prototype.getProviderLabel;
		mw.cx.MachineTranslationManager.prototype.getProviderLabel = function ( provider ) {
			if (mw.config.get('wgUserLanguage', 'en').indexOf('zh') === 0) {
				var labels = {
					Google: mw.msg( 'cx-tools-mt-provider-title', 'Google翻译' ),
					Yandex: mw.msg( 'cx-tools-mt-provider-title', 'Yandex翻译' ),
					Baidu: mw.msg( 'cx-tools-mt-provider-title', '百度翻译' ),
					Youdao: mw.msg( 'cx-tools-mt-provider-title', '有道翻译' ),
					LingoCloud: mw.msg( 'cx-tools-mt-provider-title', '彩云小译' ),
				};
				var label = labels[provider];
				if (label) {
					return label;
				}
			}
			
			return _getProviderLabel.call(this, provider);
		};
	}

	// 加载完成，开始动画
	requestAnimationFrame(function() {
		$('html').removeClass('content-loading').addClass('content-loaded');
	}, 0);

	window.addEventListener('beforeunload', function() {
		$('html').addClass('content-unloading');
	});
});