<?php

// We need the ABSPATH
if (!defined('ABSPATH')) exit;

define('PAGELAYER_BASE', plugin_basename(__FILE__));
define('PAGELAYER_FILE', __FILE__);
define('PAGELAYER_VERSION', '0.9.1');
define('PAGELAYER_DIR', WP_PLUGIN_DIR.'/'.basename(dirname(PAGELAYER_FILE)));
define('PAGELAYER_SLUG', 'pagelayer');
define('PAGELAYER_URL', plugins_url('', PAGELAYER_FILE));
define('PAGELAYER_CSS', PAGELAYER_URL.'/css');
define('PAGELAYER_JS', PAGELAYER_URL.'/js');
define('PAGELAYER_PRO_URL', 'https://pagelayer.com/features#compare');
define('PAGELAYER_DOCS', 'https://pagelayer.com/docs/');
define('PAGELAYER_API', 'https://api.pagelayer.com/');
define('PAGELAYER_SC_PREFIX', 'pl');
define('PAGELAYER_YOUTUBE_BG', 'https://www.youtube.com/watch?v=Csa6rvCWmLU');

include_once(PAGELAYER_DIR.'/main/functions.php');
include_once(PAGELAYER_DIR.'/main/class.php');

// Ok so we are now ready to go
register_activation_hook(PAGELAYER_FILE, 'pagelayer_activation');

// Is called when the ADMIN enables the plugin
function pagelayer_activation(){

	global $wpdb;

	$sql = array();

	/*$sql[] = "DROP TABLE IF EXISTS `".$wpdb->prefix."pagelayer_logs`";

	foreach($sql as $sk => $sv){
		$wpdb->query($sv);
	}*/

	add_option('pagelayer_version', PAGELAYER_VERSION);
	add_option('pagelayer_options', array());

}

// Checks if we are to update ?
function pagelayer_update_check(){

global $wpdb;

	$sql = array();
	$current_version = get_option('pagelayer_version');
	$version = (int) str_replace('.', '', $current_version);

	// No update required
	if($current_version == PAGELAYER_VERSION){
		return true;
	}

	// Is it first run ?
	if(empty($current_version)){

		// Reinstall
		pagelayer_activation();

		// Trick the following if conditions to not run
		$version = (int) str_replace('.', '', PAGELAYER_VERSION);

	}

	// Save the new Version
	update_option('pagelayer_version', PAGELAYER_VERSION);

}

// Add the action to load the plugin 
add_action('plugins_loaded', 'pagelayer_load_plugin');

// The function that will be called when the plugin is loaded
function pagelayer_load_plugin(){

	global $pagelayer;

	// Check if the installed version is outdated
	pagelayer_update_check();

	// Set the array
	$pagelayer = new PageLayer();

	// Is there any ACTION set ?
	$pagelayer->action = pagelayer_optreq('pagelayer-action');

	// Load settings
	$options = get_option('pagelayer_options');
	$pagelayer->settings['post_types'] = empty($options['post_types']) ? array('post', 'page') : $options['post_types'];
	$pagelayer->settings['css_code'] = empty($options['css_code']) ? '' : $options['css_code'];
	$pagelayer->settings['animate'] = empty($options['animate']) ? '' : $options['animate'];
	$pagelayer->settings['max_width'] = empty($options['max_width']) ? 1170 : $options['max_width'];

	// Load the language
	load_plugin_textdomain('pagelayer', false, PAGELAYER_SLUG.'/languages/');

}

// This adds the left menu in WordPress Admin page
add_action('admin_menu', 'pagelayer_admin_menu');

// Shows the admin menu of Pagelayer
function pagelayer_admin_menu() {

	global $wp_version, $pagelayer;

	$capability = 'activate_plugins';// TODO : Capability for accessing this page

	// Add the menu page
	add_menu_page(__('PageLayer Editor'), __('PageLayer'), $capability, 'pagelayer', 'pagelayer_page_handler', PAGELAYER_URL.'/images/pagelayer-logo-19.png');

	// Settings Page
	add_submenu_page('pagelayer', __('PageLayer Editor'), __('Settings'), $capability, 'pagelayer', 'pagelayer_page_handler');

	// Its premium
	if(defined('PAGELAYER_PREMIUM')){

		// Fonts link
		add_submenu_page('pagelayer', __('PageLayer Font Settings'), __('PageLayer Font Settings'), $capability, 'pagelayer_fonts', 'pagelayer_page_fonts');

	// Its free
	}else{

		// Go Pro link
		add_submenu_page('pagelayer', __('PageLayer Go Pro'), __('Go Pro'), $capability, PAGELAYER_PRO_URL);

	}

}

// This function will handle the pages in Pages in PageLayer
function pagelayer_page_handler(){

	global $wp_version, $pagelayer;

	include_once(PAGELAYER_DIR.'/main/settings.php');
	
	// Handle fonts
	if($pagelayer->action == 'fonts-manager'){
		include_once(PAGELAYER_DIR.'/main/fonts.php');
	}

}

// Enqueue JS and CSS in Admin Panel for settings
add_action( 'admin_enqueue_scripts', 'pagelayer_admin_script' );
function pagelayer_admin_script() {
	wp_enqueue_script( 'pagelayer-admin', PAGELAYER_JS.'/pagelayer-admin.js', array('jquery'), PAGELAYER_VERSION);
	wp_enqueue_style( 'pagelayer-admin', PAGELAYER_CSS.'/pagelayer-admin.css', array(), PAGELAYER_VERSION);
}

// Load the Live Body
add_action('template_redirect', 'pagelayer_load_live_body', 4);

function pagelayer_load_live_body(){

	global $post;

	// If its not live editing then stop
	if(!pagelayer_is_live()){
		return;
	}

	// If its the iFRAME then return
	if(pagelayer_is_live_iframe()){
		return;
	}

	// Are you allowed to edit ?
	if(!pagelayer_user_can_edit()){
		return;
	}

	// Load the editor live body
	include_once(PAGELAYER_DIR.'/main/live-body.php');

	pagelayer_live_body();

}

// Add the JS and CSS for Posts and Pages when being viewed ONLY if there is our content called
add_action('template_redirect', 'pagelayer_enqueue_frontend', 5);

function pagelayer_enqueue_frontend($force = false){

	global $post, $pagelayer;

	if(!empty($pagelayer->cache['enqueue_frontend'])){
		return;
	}

	if(empty($post->ID)){
		return;
	}

	// Enqueue the FRONTEND CSS
	if(get_post_meta($post->ID , 'pagelayer-data') || $force){

		// We dont need the auto <p> and <br> as they interfere with us
		remove_filter('the_content', 'wpautop');
		
		// No need to add curly codes to the content
		remove_filter('the_content', 'wptexturize');

		pagelayer_load_shortcodes();
		$pagelayer->cache['enqueue_frontend'] = true;

		// Enqueue our Editor's Frontend JS
		wp_register_script('pagelayer-frontend', PAGELAYER_JS.'/givejs.php?give=pagelayer-frontend.js,nivo-lightbox.min.js,slippry.min.js,wow.min.js,jquery-numerator.js,simpleParallax.min.js', array('jquery'), PAGELAYER_VERSION);
		wp_enqueue_script('pagelayer-frontend');

		wp_register_style('pagelayer-frontend', PAGELAYER_CSS.'/givecss.php?give=pagelayer-frontend.css,nivo-lightbox.css,slippry.css,animate.min.css', array(), PAGELAYER_VERSION);
		wp_enqueue_style('pagelayer-frontend');

		wp_register_style('font-awesome', PAGELAYER_CSS.'/font-awesome.min.css', array(), PAGELAYER_VERSION);
		wp_enqueue_style('font-awesome');
		
		// Load the global styles
		add_action('wp_head', 'pagelayer_global_styles', 5);

	}

}

// Load the google fonts
add_action('wp_footer', 'pagelayer_enqueue_fonts', 5);

function pagelayer_enqueue_fonts(){
	global $pagelayer;

	if(empty($pagelayer->cache['enqueue_frontend'])){
		return;
	}
	
	$url = 'Open Sans:300italic,400italic,600italic,300,400,600&subset=latin,latin-ext';
	//pagelayer_print($pagelayer->runtime_fonts);die('alpesh');
		
	foreach($pagelayer->runtime_fonts as $font){
		$url .= '|'.$font.':100,100i,200,200i,300,300i,400,400i,500,500i,600,600i,700,700i,800,800i,900,900i';
	}
	
	//echo '<link href="https://fonts.googleapis.com/css?family='.$url.'" rel="stylesheet">';
	
	wp_register_style('pagelayer-google-font', 'https://fonts.googleapis.com/css?family='.rawurlencode($url), array(), PAGELAYER_VERSION);
	wp_enqueue_style('pagelayer-google-font');
	
}

// We need to handle global styles
function pagelayer_global_styles(){

	$styles = '<style id="pagelayer-global-styles" type="text/css">';
	if(get_option('pagelayer_content_width')){
		$styles .= '.pagelayer-row-holder{ max-width: '.get_option('pagelayer_content_width').'px;}';
	}else{
		$styles .= '.pagelayer-row-holder{ max-width: 1170px;}';
	}
	$styles .= '.pagelayer-row-holder{ margin-left: auto; margin-right: auto;}';
	$styles .= '</style>';
	
	echo $styles;
}

// Load the live editor if needed
add_action('wp_enqueue_scripts', 'pagelayer_load_live', 9999);

function pagelayer_load_live(){

	global $post;

	// If its not live editing then stop
	if(!pagelayer_is_live_iframe()){
		return;
	}

	// Are you allowed to edit ?
	if(!pagelayer_user_can_edit()){
		return;
	}

	// Load the editor class
	include_once(PAGELAYER_DIR.'/main/live.php');

	// Call the constructor
	$pl_editor = new PageLayer_LiveEditor();

}

// Show the backend editor options
add_action('edit_form_after_title', 'pagelayer_after_title');
function pagelayer_after_title(){

	global $post;
	
	// Get the current screen
	$current_screen = get_current_screen();
	
	// For gutenberg
	if(method_exists($current_screen, 'is_block_editor') && $current_screen->is_block_editor()){

		// Add the code in the footer
		add_action('admin_footer', 'pagelayer_gutenberg_after_title');
		
		return;
	}
	
	$link = pagelayer_shortlink($post->ID).'&pagelayer-live=1';

	echo '
<div id="pagelayer-editor-button-row" style="margin-top:15px">
	<a id="pagelayer-editor-button" href="'.$link.'" class="button button-primary button-large" style="height:auto; padding:6px; font-size:18px;">
		<img src="'.PAGELAYER_URL.'/images/pagelayer-logo-40.png" align="top" width="24" /> <span>'.__('Edit with PageLayer').'</span>
	</a>
</div>';

}

function pagelayer_gutenberg_after_title(){

	global $post;
	
	$link = pagelayer_shortlink($post->ID).'&pagelayer-live=1';

	echo '
<div id="pagelayer-editor-button-row" style="margin-left:15px; display:none">
	<a id="pagelayer-editor-button" href="'.$link.'" class="button button-primary button-large" style="height:auto; padding:6px; font-size:18px;">
		<img src="'.PAGELAYER_URL.'/images/pagelayer-logo-40.png" align="top" width="24" /> <span>'.__('Edit with PageLayer').'</span>
	</a>
</div>

<script type="text/javascript">
jQuery(document).ready(function(){
	
	var pagelayer_timer;
	var pagelayer_button = function(){
		var button = jQuery("#pagelayer-editor-button-row");
		var g = jQuery(".edit-post-header-toolbar");
		if(g.length < 1){
			return;
		}
		button.detach();
		//console.log(button);
		g.append(button);
		button.show();
		clearInterval(pagelayer_timer);
	}
	pagelayer_timer = setInterval(pagelayer_button, 100);
});
</script>';
	
}

add_filter( 'post_row_actions', 'pagelayer_quick_link', 10, 2 );
add_filter( 'page_row_actions', 'pagelayer_quick_link', 10, 2 );
function pagelayer_quick_link($actions, $post){
	$link = pagelayer_shortlink($post->ID).'&pagelayer-live=1';

	$actions['pagelayer'] = '<a href="'.esc_url( $link ).'">'.__( 'Edit using PageLayer', 'pagelayer') .'</a>';

	return $actions;
}

// The ajax handler
add_action('wp_ajax_pagelayer_wp_widget', 'pagelayer_wp_widget_ajax');
function pagelayer_wp_widget_ajax(){

	global $pagelayer;

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');
	
	pagelayer_load_shortcodes();
	
	header('Content-Type: application/json');
	
	$ret = [];
	$tag = @$_POST['tag'];
	//pagelayer_print($pagelayer->shortcodes[$tag]);
	
	// No tag ?
	if(empty($pagelayer->shortcodes[$tag])){
		$ret['error'][] = 'No Tag';
		echo json_encode($ret);
		wp_die();
	}
	
	// Include the widgets
	include_once(ABSPATH . 'wp-admin/includes/widgets.php');
	
	$class = $pagelayer->shortcodes[$tag]['widget'];
	
	// Check the widget class exists ?
	if(empty($class) || !class_exists($class)){
		$ret['error'][] = 'No Widget Class';
		echo json_encode($ret);
		wp_die();
	}
	
	$instance = [];
	$widget = new $class();
	$widget->_set('pagelayer-widget-1234567890');
	
	// Is there any existing data ?
	if(!empty($_POST['widget_data'])){
		$json = json_decode(stripslashes($_POST['widget_data']), true);
		//pagelayer_print($json);die();
		if(!empty($json)){
			$instance = $json;
		}
	}

	// Are there any form values ?
	if(!empty($_POST['values'])){		
		parse_str(stripslashes($_POST['values']), $data);
		//pagelayer_print($data);die();
		
		// Any data ?
		if(!empty($data)){
			
			// First key is useless
			$data = current($data);
			
			// Do we still have valid data ?
			if(!empty($data)){
				
				// 2nd key is useless and just over-ride instance
				$instance = current($data);
				
			}
		}
	}
	
	// Get the form
	ob_start();
	$widget->form($instance);
	$ret['form'] = ob_get_contents();
	ob_end_clean();
	
	// Get the html
	ob_start();
	$widget->widget([], $instance);
	$ret['html'] = ob_get_contents();
	ob_end_clean();
	
	// Widget data to set
	if(!empty($instance)){
		$ret['widget_data'] = $instance;
	}
	
	echo json_encode($ret);
	wp_die();
	
}

// Update Post content
add_action('wp_ajax_pagelayer_save_content', 'pagelayer_save_content');
function pagelayer_save_content(){

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');

	$content = $_POST['pagelayer_update_content'];

	$postID = (int) $_GET['postID'];

	if(empty($postID)){
		$msg['error'] = 'Invalid post ID';
	}
	
	// Check if the post exists
	
	if(!empty($postID) && !empty($content)){
		
		$post = array(
					'ID' => $postID,
					'post_content' => $content,
				);

		// Update the post into the database
		wp_update_post($post);

		if (is_wp_error($postID)) {
			$msg['error'] = 'Unable to update the Post Content for some reason';
		}else{
			$msg['success'] = 'Post Content was updated successfully!';
		}
		
	}else{
		$msg['error'] = "Unable to update the Post Content for some reason";
	}

	echo json_encode($msg);
	wp_die();
	
}

// Shortcodes Widget Handler
add_action('wp_ajax_pagelayer_do_shortcodes', 'pagelayer_do_shortcodes');
function pagelayer_do_shortcodes(){

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');
	
	$data = '';
	if(isset($_REQUEST['shortcode_data'])){
		$data = stripslashes($_REQUEST['shortcode_data']);
	}
		
	echo do_shortcode($data);
	wp_die();
	
}

// Get the Site Title
add_action('wp_ajax_pagelayer_fetch_site_title', 'pagelayer_fetch_site_title');
function pagelayer_fetch_site_title(){

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');
	
	echo get_bloginfo('name');
	wp_die();
}

// Update the Site Title
add_action('wp_ajax_pagelayer_update_site_title', 'pagelayer_update_site_title');
function pagelayer_update_site_title(){
	global $wpdb;

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');

	$site_title = $_POST['site_title'];

	update_option('blogname', $site_title);

	$wpdb->query("UPDATE `sm_sitemeta` 
				SET meta_value = '".$site_title."'
				WHERE meta_key = 'site_name'");
	wp_die();
}

// Show the SideBars
add_action('wp_ajax_pagelayer_fetch_sidebar', 'pagelayer_fetch_sidebar');
function pagelayer_fetch_sidebar(){
	
	global $wp_registered_sidebars;

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');
	
	// Create a list
	$pagelayer_wp_widgets = array();
	
	foreach($wp_registered_sidebars as $v){
		$pagelayer_wp_widgets[$v['id']] = $v['name'];
	}
	
	$id = @$_REQUEST['sidebar'];
		
	if(function_exists('dynamic_sidebar') && !empty($pagelayer_wp_widgets[$id])) {
		ob_start();
		dynamic_sidebar($id);
		$result = ob_get_clean();
	}else{
		$result = 'No such Widget Area !';
	}
	
	echo $result;
	wp_die();
	
}

// Show the primary menu !
add_action('wp_ajax_pagelayer_fetch_primary_menu', 'pagelayer_fetch_primary_menu');
function pagelayer_fetch_primary_menu(){

	// Some AJAX security
	check_ajax_referer('pagelayer_ajax', 'nonce');

	echo wp_nav_menu( array(
		'menu'   => 'primary-menu',
		'menu_id' => 'pagelayer-header-menu',
		'theme_location' => 'primary',
		'menu_class'	 => 'primary-menu',
	) );

	wp_die();
}