<?php
/**
 * fTravel functions and definitions
 *
 * Set up the theme and provides some helper functions, which are used in the
 * theme as custom template tags. Others are attached to action and filter
 * hooks in WordPress to change core functionality.
 *
 * When using a child theme you can override certain functions (those wrapped
 * in a function_exists() call) by defining them first in your child theme's
 * functions.php file. The child theme's functions.php file is included before
 * the parent theme's file, so the child theme functions would be used.
 *
 * @link https://codex.wordpress.org/Theme_Development
 * @link https://codex.wordpress.org/Child_Themes
 *
 * Functions that are not pluggable (not wrapped in function_exists()) are
 * instead attached to a filter or action hook.
 *
 * For more information on hooks, actions, and filters,
 * {@link https://codex.wordpress.org/Plugin_API}
 */

/**
 * Set a constant that holds the theme's minimum supported PHP version.
 */
define( 'FTRAVEL_MIN_PHP_VERSION', '7.0' );

/**
 * Immediately after theme switch is fired we we want to check php version and
 * revert to previously active theme if version is below our minimum.
 */
add_action( 'after_switch_theme', 'ftravel_test_for_min_php' );

/**
 * Switches back to the previous theme if the minimum PHP version is not met.
 */
function ftravel_test_for_min_php() {

	// Compare versions.
	if ( version_compare( PHP_VERSION, FTRAVEL_MIN_PHP_VERSION, '<' ) ) {
		// Site doesn't meet themes min php requirements, add notice...
		add_action( 'admin_notices', 'ftravel_min_php_not_met_notice' );
		// ... and switch back to previous theme.
		switch_theme( get_option( 'theme_switched' ) );
		return false;

	};
}

if ( ! function_exists( 'wp_body_open' ) ) {
        function wp_body_open() {
                do_action( 'wp_body_open' );
        }
}

/**
 * An error notice that can be displayed if the Minimum PHP version is not met.
 */
function ftravel_min_php_not_met_notice() {
	?>
	<div class="notice notice-error is_dismissable">
		<p>
			<?php esc_html_e( 'You need to update your PHP version to run this theme.', 'ftravel' ); ?> <br />
			<?php
			printf(
				/* translators: 1 is the current PHP version string, 2 is the minmum supported php version string of the theme */
				esc_html__( 'Actual version is: %1$s, required version is: %2$s.', 'ftravel' ),
				PHP_VERSION,
				FTRAVEL_MIN_PHP_VERSION
			); // phpcs: XSS ok.
			?>
		</p>
	</div>
	<?php
}


if ( ! function_exists( 'ftravel_setup' ) ) :
	/**
	 * fTravel setup.
	 *
	 * Set up theme defaults and registers support for various WordPress features.
	 *
	 * Note that this function is hooked into the after_setup_theme hook, which
	 * runs before the init hook. The init hook is too late for some features, such
	 * as indicating support post thumbnails.
	 *
	 */
	function ftravel_setup() {

		/*
		 * Make theme available for translation.
		 *
		 * Translations can be filed in the /languages/ directory
		 *
		 * If you're building a theme based on fTravel, use a find and replace
		 * to change 'ftravel' to the name of your theme in all the template files.
		 */
		load_theme_textdomain( 'ftravel', get_template_directory() . '/languages' );

		// Add default posts and comments RSS feed links to head.
		add_theme_support( 'automatic-feed-links' );

		/*
		 * Let WordPress manage the document title.
		 * By adding theme support, we declare that this theme does not use a
		 * hard-coded <title> tag in the document head, and expect WordPress to
		 * provide it for us.
		 */
		add_theme_support( 'title-tag' );

		/*
		 * Enable support for Post Thumbnails on posts and pages.
		 *
		 * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
		 */
		add_theme_support( 'post-thumbnails' );

		/*
		 * Switch default core markup for search form, comment form, and comments
		 * to output valid HTML5.
		 */
		add_theme_support( 'html5', array(
			'comment-form',
			'comment-list',
			'gallery',
			'caption',
		) );

		// Add support for Block Styles.
		add_theme_support( 'wp-block-styles' );

		add_theme_support( 'editor-styles' );

		/*
		 * This theme styles the visual editor to resemble the theme style,
		 * specifically font, colors, and column width.
	 	 */
		add_editor_style( array( 'css/editor-style.css', 
								 get_template_directory_uri() . '/css/font-awesome.css'
						  ) );

		/*
		 * Set Custom Background
		 */				 
		add_theme_support( 'custom-background', array ('default-color'  => '#ffffff') );

		// Set the default content width.
		$GLOBALS['content_width'] = 900;

		// This theme uses wp_nav_menu() in header menu
		register_nav_menus( array(
			'primary'   => __( 'Primary Menu', 'ftravel' ),
			'footer'    => __( 'Footer Menu', 'ftravel' ),
		) );

		$defaults = array(
	        'flex-height' => false,
	        'flex-width'  => false,
	        'header-text' => array( 'site-title', 'site-description' ),
	    );
	    add_theme_support( 'custom-logo', $defaults );

	    // Define and register starter content to showcase the theme on new sites.
		$starter_content = array(

			'widgets' => array(
				'sidebar-widget-area' => array(
					'search',
					'recent-posts',
					'categories',
					'archives',
				),

				

				'footer-widget-area' => array(
					'text_about'
				),
			),

			'posts' => array(
				'home',
				'blog',
				'about',
				'contact'
			),

			// Default to a static front page and assign the front and posts pages.
			'options' => array(
				'show_on_front' => 'page',
				'page_on_front' => '{{home}}',
				'page_for_posts' => '{{blog}}',
			),

			// Set the front page section theme mods to the IDs of the core-registered pages.
			'theme_mods' => array(
				'ftravel_slider_display' => 1,
				'ftravel_slide1_image' => esc_url( get_template_directory_uri() . '/img/1.jpg' ),
				'ftravel_slide1_content' => _x( '<h2>Slide 1 Title</h2><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p><a href="#" class="btn" title="Read more">Read more</a>', 'Theme starter content', 'ftravel' ),
				'ftravel_slide2_image' => esc_url( get_template_directory_uri() . '/img/2.jpg' ),
				'ftravel_slide2_content' => _x( '<h2>Slide 2 Title</h2><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p><a href="#" class="btn" title="Read more">Read more</a>', 'Theme starter content', 'ftravel' ),
				'ftravel_slide3_image' => esc_url( get_template_directory_uri() . '/img/3.jpg' ),
				'ftravel_slide3_content' => _x( '<h2>Slide 3 Title</h2><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p><a href="#" class="btn" title="Read more">Read more</a>', 'Theme starter content', 'ftravel' ),
			),

			'nav_menus' => array(

				// Assign a menu to the "primary" location.
				'primary' => array(
					'name' => __( 'Primary Menu', 'ftravel' ),
					'items' => array(
						'link_home',
						'page_blog',
						'page_contact',
						'page_about',
					),
				),

				// Assign a menu to the "footer" location.
				'footer' => array(
					'name' => __( 'Footer Menu', 'ftravel' ),
					'items' => array(
						'link_home',
						'page_about',
						'page_blog',
						'page_contact',
					),
				),
			),
		);

		$starter_content = apply_filters( 'ftravel_starter_content', $starter_content );
		add_theme_support( 'starter-content', $starter_content );
	}
endif; // ftravel_setup
add_action( 'after_setup_theme', 'ftravel_setup' );



if ( ! function_exists( 'ftravel_load_scripts' ) ) :
	/**
	 * the main function to load scripts in the fTravel theme
	 * if you add a new load of script, style, etc. you can use that function
	 * instead of adding a new wp_enqueue_scripts action for it.
	 */
	function ftravel_load_scripts() {

		// load main stylesheet.
		wp_enqueue_style( 'font-awesome', get_template_directory_uri() . '/css/font-awesome.css', array( ) );
		wp_enqueue_style( 'animate-css', get_template_directory_uri() . '/css/animate.css', array( ) );
		wp_enqueue_style( 'ftravel-style', get_stylesheet_uri(), array() );
		
		
		if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
			wp_enqueue_script( 'comment-reply' );
		}

		wp_enqueue_script( 'viewportchecker', get_template_directory_uri() . '/js/viewportchecker.js',
            array( 'jquery' ) );
		
		// Load Utilities JS Script
		wp_enqueue_script( 'ftravel-utilities-js',
			get_template_directory_uri() . '/js/utilities.js',
			array( 'jquery', 'viewportchecker' ) );

		$data = array(
	        'loading_effect' => ( get_theme_mod('ftravel_animations_display', 0) == 1 ),
	    );
	    wp_localize_script('ftravel-utilities-js', 'ftravel_options', $data);

	    // Load script for the slider
		wp_enqueue_script( 'unslider', get_template_directory_uri() . '/js/unslider.js', array( 'jquery' ) );
	}
endif; // ftravel_load_scripts
add_action( 'wp_enqueue_scripts', 'ftravel_load_scripts' );

if ( ! function_exists( 'ftravel_widgets_init' ) ) :
	/**
	 *	widgets-init action handler. Used to register widgets and register widget areas
	 */
	function ftravel_widgets_init() {
		
		// Register Sidebar Widget.
		register_sidebar( array (
							'name'	 		 =>	 __( 'Sidebar Widget Area', 'ftravel'),
							'id'		 	 =>	 'sidebar-widget-area',
							'description'	 =>  __( 'The sidebar widget area', 'ftravel'),
							'before_widget'	 =>  '',
							'after_widget'	 =>  '',
							'before_title'	 =>  '<div class="sidebar-before-title"></div><h3 class="sidebar-title">',
							'after_title'	 =>  '</h3><div class="sidebar-after-title"></div>',
						) );

		// Register Footer Widget
		register_sidebar( array (
								'name'			 =>  __( 'Footer Content Area', 'ftravel' ),
								'id' 			 =>  'footer-widget-area',
								'description'	 =>  __( 'The Footer Content widget area', 'ftravel' ),
								'before_widget'  =>  '',
								'after_widget'	 =>  '',
								'before_title'	 =>  '<h2 class="footer-title">',
								'after_title'	 =>  '</h2><div class="footer-after-title"></div>',
							) );
	}
endif; // ftravel_widgets_init
add_action( 'widgets_init', 'ftravel_widgets_init' );

if ( ! function_exists( 'ftravel_custom_header_setup' ) ) :
  /**
   * Set up the WordPress core custom header feature.
   *
   * @uses ftravel_header_style()
   */
  function ftravel_custom_header_setup() {

  	add_theme_support( 'custom-header', array (
                         'default-image'          => '',
                         'flex-height'            => true,
                         'flex-width'             => true,
                         'uploads'                => true,
                         'width'                  => 900,
                         'height'                 => 100,
                         'default-text-color'     => '#434343',
                         'wp-head-callback'       => 'ftravel_header_style',
                      ) );
  }
endif; // ftravel_custom_header_setup
add_action( 'after_setup_theme', 'ftravel_custom_header_setup' );

if ( ! function_exists( 'ftravel_header_style' ) ) :

  /**
   * Styles the header image and text displayed on the blog.
   *
   * @see ftravel_custom_header_setup().
   */
  function ftravel_header_style() {

  	$header_text_color = get_header_textcolor();

      if ( ! has_header_image()
          && ( get_theme_support( 'custom-header', 'default-text-color' ) === $header_text_color
               || 'blank' === $header_text_color ) ) {

          return;
      }

      $headerImage = get_header_image();
  ?>
      <style id="ftravel-custom-header-styles" type="text/css">

          <?php if ( has_header_image() ) : ?>

                  #header-main-fixed {background-image: url("<?php echo esc_url( $headerImage ); ?>");}

          <?php endif; ?>

          <?php if ( get_theme_support( 'custom-header', 'default-text-color' ) !== $header_text_color
                      && 'blank' !== $header_text_color ) : ?>

                  #header-main-fixed, #header-main-fixed h1.entry-title {color: #<?php echo sanitize_hex_color_no_hash( $header_text_color ); ?>;}

          <?php endif; ?>
      </style>
  <?php
  }
endif; // End of ftravel_header_style.

if ( class_exists('WP_Customize_Section') ) {
	class ftravel_Customize_Section_Pro extends WP_Customize_Section {

		// The type of customize section being rendered.
		public $type = 'ftravel';

		// Custom button text to output.
		public $pro_text = '';

		// Custom pro button URL.
		public $pro_url = '';

		// Add custom parameters to pass to the JS via JSON.
		public function json() {
			$json = parent::json();

			$json['pro_text'] = $this->pro_text;
			$json['pro_url']  = esc_url( $this->pro_url );

			return $json;
		}

		// Outputs the template
		protected function render_template() { ?>

			<li id="accordion-section-{{ data.id }}" class="accordion-section control-section control-section-{{ data.type }} cannot-expand">

				<h3 class="accordion-section-title">
					{{ data.title }}

					<# if ( data.pro_text && data.pro_url ) { #>
						<a href="{{ data.pro_url }}" class="button button-primary alignright" target="_blank">{{ data.pro_text }}</a>
					<# } #>
				</h3>
			</li>
		<?php }
	}
}

if ( ! function_exists( 'ftravel_show_copyright_text' ) ) :
	/**
	 *	Displays the copyright text.
	 */
	function ftravel_show_copyright_text() {
		
		$footerText = get_theme_mod('ftravel_footer_copyright', null);

		if ( !empty( $footerText ) ) {

			echo esc_html( $footerText ) . ' | ';		
		}
	}
endif; // end of ftravel_show_copyright_text

if ( ! function_exists( 'ftravel_display_slider' ) ) :
	/**
	 * Displays the slider
	 */
	function ftravel_display_slider() {

	?>
		
		<div class="slider">
			<a href="#" id="unslider-arrow-prev" class="unslider-arrow prev"></a>
			<a href="#" id="unslider-arrow-next" class="unslider-arrow next"></a>
			<ul>
			<?php
				// display slides
				for ( $i = 1; $i <= 3; ++$i ) {
						
					$defaultSlideImage = get_template_directory_uri().'/img/' . $i .'.jpg';

					$slideContent = get_theme_mod( 'ftravel_slide'.$i.'_content' );
					$slideImage = get_theme_mod( 'ftravel_slide'.$i.'_image', $defaultSlideImage );

	?>					
					<li <?php if ( $slideImage != '' ) : ?>

								style="background-image: url('<?php echo $slideImage; ?>');"

						<?php endif; ?>>
						<?php if ( $slideContent ) : ?>
								<div class="slider-content-wrapper">
									<div class="slider-content-container">
										<div class="slide-content">
											<?php echo $slideContent; ?>
										</div>
									</div>
								</div>
						<?php endif; ?>
					</li>				
	<?php
				}
?>
			</ul>
		</div>
	<?php 
	}
endif; // end of ftravel_display_slider

if ( ! function_exists( 'ftravel_sanitize_checkbox' ) ) :
	/**
	 * Sanitization callback for 'checkbox' type controls. This callback sanitizes `$checked`
	 * as a boolean value, either TRUE or FALSE.
	 *
	 * @param bool $checked Whether the checkbox is checked.
	 * @return bool Whether the checkbox is checked.
	 */
	function ftravel_sanitize_checkbox( $checked ) {
		// Boolean check.
		return ( ( isset( $checked ) && true == $checked ) ? true : false );
	}
endif; // end of ftravel_sanitize_checkbox

if ( ! function_exists( 'ftravel_sanitize_html' ) ) :

	function ftravel_sanitize_html( $html ) {
		return wp_kses_post( $html );
	}

endif; // ftravel_sanitize_html

if ( ! function_exists( 'ftravel_sanitize_url' ) ) :

	function ftravel_sanitize_url( $url ) {
		return esc_url_raw( $url );
	}

endif; // ftravel_sanitize_url

/**
 * Singleton class for handling the theme's customizer integration.
 */
final class ftravel_Customize {

	// Returns the instance.
	public static function get_instance() {

		static $instance = null;

		if ( is_null( $instance ) ) {
			$instance = new self;
			$instance->setup_actions();
		}

		return $instance;
	}

	// Constructor method.
	private function __construct() {}

	// Sets up initial actions.
	private function setup_actions() {

		// Register panels, sections, settings, controls, and partials.
		add_action( 'customize_register', array( $this, 'sections' ) );

		// Register scripts and styles for the controls.
		add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_control_scripts' ), 0 );
	}

	// Sets up the customizer sections.
	public function sections( $manager ) {

		// Register custom section types.
		$manager->register_section_type( 'ftravel_Customize_Section_Pro' );

		// Register sections.
		$manager->add_section(
			new ftravel_Customize_Section_Pro(
				$manager,
				'ftravel',
				array(
					'title'    => esc_html__( 'tTravel', 'ftravel' ),
					'pro_text' => esc_html__( 'Upgrade to Pro', 'ftravel' ),
					'pro_url'  => esc_url( 'https://tishonator.com/product/ttravel' )
				)
			)
		);

		// Load custom sections.

		/**
	     * Add Animations Section
	     */
	    $manager->add_section(
	        'ftravel_animations_display',
	        array(
	            'title'       => __( 'Animations', 'ftravel' ),
	            'capability'  => 'edit_theme_options',
	        )
	    );

	    // Add display Animations option
	    $manager->add_setting(
	            'ftravel_animations_display',
	            array(
	                    'default'           => 0,
	                    'sanitize_callback' => 'ftravel_sanitize_checkbox',
	            )
	    );

	    $manager->add_control( new WP_Customize_Control( $manager,
	                        'ftravel_animations_display',
	                            array(
	                                'label'          => __( 'Enable Animations', 'ftravel' ),
	                                'section'        => 'ftravel_animations_display',
	                                'settings'       => 'ftravel_animations_display',
	                                'type'           => 'checkbox',
	                            )
	                        )
	    );

	    /**
		 * Add Slider Section
		 */
		$manager->add_section(
			'ftravel_slider_section',
			array(
				'title'       => __( 'Slider', 'ftravel' ),
				'capability'  => 'edit_theme_options',
			)
		);

		// Add display slider option
		$manager->add_setting(
				'ftravel_slider_display',
				array(
						'default'           => 0,
						'sanitize_callback' => 'ftravel_sanitize_checkbox',
				)
		);

		$manager->add_control( new WP_Customize_Control( $manager, 'ftravel_slider_display',
								array(
									'label'          => __( 'Display Slider on a Static Front Page', 'ftravel' ),
									'section'        => 'ftravel_slider_section',
									'settings'       => 'ftravel_slider_display',
									'type'           => 'checkbox',
								)
							)
		);

	    for ($i = 1; $i <= 3; ++$i) {
		
			$slideContentId = 'ftravel_slide'.$i.'_content';
			$slideImageId = 'ftravel_slide'.$i.'_image';
			$defaultSliderImagePath = get_template_directory_uri().'/img/'.$i.'.jpg';
		
			// Add Slide Content
			$manager->add_setting(
				$slideContentId,
				array(
					'sanitize_callback' => 'ftravel_sanitize_html',
				)
			);
			
			$manager->add_control( new WP_Customize_Control( $manager, $slideContentId,
										array(
											'label'          => sprintf( esc_html__( 'Slide #%s Content', 'ftravel' ), $i ),
											'section'        => 'ftravel_slider_section',
											'settings'       => $slideContentId,
											'type'           => 'textarea',
											)
										)
			);
			
			// Add Slide Background Image
			$manager->add_setting( $slideImageId,
				array(
					'default' => $defaultSliderImagePath,
					'sanitize_callback' => 'ftravel_sanitize_url'
				)
			);

			$manager->add_control( new WP_Customize_Image_Control( $manager, $slideImageId,
					array(
						'label'   	 => sprintf( esc_html__( 'Slide #%s Image', 'ftravel' ), $i ),
						'section' 	 => 'ftravel_slider_section',
						'settings'   => $slideImageId,
					) 
				)
			);
		}

	    /**
		 * Add Footer Section
		 */
		$manager->add_section(
			'ftravel_footer_section',
			array(
				'title'       => __( 'Footer', 'ftravel' ),
				'capability'  => 'edit_theme_options',
			)
		);

	    // Add footer copyright text
		$manager->add_setting(
			'ftravel_footer_copyright',
			array(
			    'default'           => '',
			    'sanitize_callback' => 'sanitize_text_field',
			)
		);

		$manager->add_control( new WP_Customize_Control( $manager, 'ftravel_footer_copyright',
	        array(
	            'label'          => __( 'Copyright Text', 'ftravel' ),
	            'section'        => 'ftravel_footer_section',
	            'settings'       => 'ftravel_footer_copyright',
	            'type'           => 'text',
	            )
	        )
		);
	}

	// Loads theme customizer CSS.
	public function enqueue_control_scripts() {

		wp_enqueue_script( 'ftravel-customize-controls', trailingslashit( get_template_directory_uri() ) . 'js/customize-controls.js', array( 'customize-controls' ) );

		wp_enqueue_style( 'ftravel-customize-controls', trailingslashit( get_template_directory_uri() ) . 'css/customize-controls.css' );
	}
}

// Doing this customizer thang!
ftravel_Customize::get_instance();

/**
 * Fix skip link focus in IE11.
 *
 * This does not enqueue the script because it is tiny and because it is only for IE11,
 * thus it does not warrant having an entire dedicated blocking script being loaded.
 *
 * @link https://git.io/vWdr2
 */
function ftravel_skip_link_focus_fix() {
	// The following is minified via `terser --compress --mangle -- js/skip-link-focus-fix.js`.
	?>
	<script>
	/(trident|msie)/i.test(navigator.userAgent)&&document.getElementById&&window.addEventListener&&window.addEventListener("hashchange",function(){var t,e=location.hash.substring(1);/^[A-z0-9_-]+$/.test(e)&&(t=document.getElementById(e))&&(/^(?:a|select|input|button|textarea)$/i.test(t.tagName)||(t.tabIndex=-1),t.focus())},!1);
	</script>
	<?php
}
add_action( 'wp_print_footer_scripts', 'ftravel_skip_link_focus_fix' );

function ftravel_register_block_styles() {

	register_block_style(
		'core/button',
		array(
			'name'  => 'btn',
			'label' => __( 'Hover Effect', 'ftravel' ),
		)
	);

	register_block_style(
		'core/group',
		array(
			'name'  => 'tgroup',
			'label' => __( 'Margin Bottom Space', 'ftravel' ),
		)
	);

	register_block_style(
		'core/site-title',
		array(
			'name'  => 'tsitetitle',
			'label' => __( 'Bold', 'ftravel' ),
		)
	);

	register_block_style(
		'core/post-title',
		array(
			'name'  => 'tposttitle',
			'label' => __( 'Bold', 'ftravel' ),
		)
	);

	register_block_style(
		'core/social-link',
		array(
			'name'  => 'tsociallinks',
			'label' => __( 'Square', 'ftravel' ),
		)
	);
}
add_action( 'init', 'ftravel_register_block_styles' );
