<?php
/**
 * Customizer Control: typography.
 *
 * @package     Kirki
 * @subpackage  Controls
 * @copyright   Copyright (c) 2017, Aristeides Stathopoulos
 * @license     http://opensource.org/licenses/https://opensource.org/licenses/MIT
 * @since       2.0
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Typography control.
 */
class Kirki_Control_Typography extends WP_Customize_Control {

	/**
	 * The control type.
	 *
	 * @access public
	 * @var string
	 */
	public $type = 'kirki-typography';

	/**
	 * Used to automatically generate all CSS output.
	 *
	 * @access public
	 * @var array
	 */
	public $output = array();

	/**
	 * Data type
	 *
	 * @access public
	 * @var string
	 */
	public $option_type = 'theme_mod';

	/**
	 * The kirki_config we're using for this control
	 *
	 * @access public
	 * @var string
	 */
	public $kirki_config = 'global';

	/**
	 * Constructor.
	 *
	 * Supplied `$args` override class property defaults.
	 *
	 * If `$args['settings']` is not defined, use the $id as the setting ID.
	 *
	 * @since 3.0.0
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 * @param string               $id      Control ID.
	 * @param array                $args    {
	 *     Optional. Arguments to override class property defaults.
	 *
	 *     @type int                  $instance_number Order in which this instance was created in relation
	 *                                                 to other instances.
	 *     @type WP_Customize_Manager $manager         Customizer bootstrap instance.
	 *     @type string               $id              Control ID.
	 *     @type array                $settings        All settings tied to the control. If undefined, `$id` will
	 *                                                 be used.
	 *     @type string               $setting         The primary setting for the control (if there is one).
	 *                                                 Default 'default'.
	 *     @type int                  $priority        Order priority to load the control. Default 10.
	 *     @type string               $section         Section the control belongs to. Default empty.
	 *     @type string               $label           Label for the control. Default empty.
	 *     @type string               $description     Description for the control. Default empty.
	 *     @type array                $choices         List of choices for 'radio' or 'select' type controls, where
	 *                                                 values are the keys, and labels are the values.
	 *                                                 Default empty array.
	 *     @type array                $input_attrs     List of custom input attributes for control output, where
	 *                                                 attribute names are the keys and values are the values. Not
	 *                                                 used for 'checkbox', 'radio', 'select', 'textarea', or
	 *                                                 'dropdown-pages' control types. Default empty array.
	 *     @type array                $json            Deprecated. Use WP_Customize_Control::json() instead.
	 *     @type string               $type            Control type. Core controls include 'text', 'checkbox',
	 *                                                 'textarea', 'radio', 'select', and 'dropdown-pages'. Additional
	 *                                                 input types such as 'email', 'url', 'number', 'hidden', and
	 *                                                 'date' are supported implicitly. Default 'text'.
	 * }
	 */
	public function __construct( $manager, $id, $args = array() ) {

		parent::__construct( $manager, $id, $args );
		add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_scripts' ), 999 );

	}

	/**
	 * Enqueue control related scripts/styles.
	 *
	 * @access public
	 */
	public function enqueue_scripts() {

		wp_enqueue_script( 'wp-color-picker-alpha', trailingslashit( Kirki::$url ) . 'assets/vendor/wp-color-picker-alpha/wp-color-picker-alpha.js', array( 'wp-color-picker' ), '1.2', true );
		wp_enqueue_style( 'wp-color-picker' );

		wp_enqueue_script( 'kirki-typography', trailingslashit( Kirki::$url ) . 'controls/typography/typography.js', array( 'jquery', 'customize-base', 'select2', 'wp-color-picker-alpha' ), false, true );
		wp_enqueue_style( 'kirki-typography-css', trailingslashit( Kirki::$url ) . 'controls/typography/typography.css', null );

		wp_enqueue_script( 'select2', trailingslashit( Kirki::$url ) . 'assets/vendor/select2/js/select2.full.js', array( 'jquery' ), '4.0.3', true );
		wp_enqueue_style( 'select2', trailingslashit( Kirki::$url ) . 'assets/vendor/select2/css/select2.css', array(), '4.0.3' );
		wp_enqueue_style( 'kirki-select2', trailingslashit( Kirki::$url ) . 'assets/vendor/select2/kirki.css', null );

		$custom_fonts_array  = ( isset( $this->choices['fonts'] ) && ( isset( $this->choices['fonts']['google'] ) || isset( $this->choices['fonts']['standard'] ) ) && ( ! empty( $this->choices['fonts']['google'] ) || ! empty( $this->choices['fonts']['standard'] ) ) );
		$localize_script_var = ( $custom_fonts_array ) ? 'kirkiFonts' . $this->id : 'kirkiAllFonts';
		wp_localize_script( 'kirki-typography', $localize_script_var, array(
			'standard' => $this->get_standard_fonts(),
			'google'   => $this->get_google_fonts(),
		) );
	}

	/**
	 * Refresh the parameters passed to the JavaScript via JSON.
	 *
	 * @see WP_Customize_Control::to_json()
	 */
	public function to_json() {
		parent::to_json();

		$this->json['default'] = $this->setting->default;
		if ( isset( $this->default ) ) {
			$this->json['default'] = $this->default;
		}
		$this->json['output']  = $this->output;
		$this->json['value']   = Kirki_Field_Typography::sanitize( $this->value() );
		$this->json['choices'] = $this->choices;
		$this->json['link']    = $this->get_link();
		$this->json['id']      = $this->id;

		$this->json['inputAttrs'] = '';
		foreach ( $this->input_attrs as $attr => $value ) {
			$this->json['inputAttrs'] .= $attr . '="' . esc_attr( $value ) . '" ';
		}

		foreach ( array_keys( $this->json['value'] ) as $key ) {
			if ( ! in_array( $key, array( 'variant', 'font-weight', 'font-style' ) ) && ! isset( $this->json['default'][ $key ] ) ) {
				unset( $this->json['value'][ $key ] );
			}
		}

		// Fix for https://github.com/aristath/kirki/issues/1405.
		foreach ( array_keys( $this->json['value'] ) as $key ) {
			if ( isset( $this->json['default'][ $key ] ) && false === $this->json['default'][ $key ] ) {
				unset( $this->json['value'][ $key ] );
			}
		}
		$this->json['show_variants'] = ( true === Kirki_Fonts_Google::$force_load_all_variants ) ? false : true;
		$this->json['show_subsets']  = ( true === Kirki_Fonts_Google::$force_load_all_subsets ) ? false : true;
		$this->json['languages']     = Kirki_Fonts::get_google_font_subsets();
	}

	/**
	 * An Underscore (JS) template for this control's content (but not its container).
	 *
	 * Class variables for this control class are available in the `data` JS object;
	 * export custom variables by overriding {@see WP_Customize_Control::to_json()}.
	 *
	 * @see WP_Customize_Control::print_template()
	 *
	 * @access protected
	 */
	protected function content_template() {
		?>
		<label class="customizer-text">
			<# if ( data.label ) { #><span class="customize-control-title">{{{ data.label }}}</span><# } #>
			<# if ( data.description ) { #><span class="description customize-control-description">{{{ data.description }}}</span><# } #>
		</label>

		<div class="wrapper">

			<# if ( data.default['font-family'] ) { #>
				<# if ( '' == data.value['font-family'] ) { data.value['font-family'] = data.default['font-family']; } #>
				<# if ( data.choices['fonts'] ) { data.fonts = data.choices['fonts']; } #>
				<div class="font-family">
					<h5><?php esc_attr_e( 'Font Family', 'kirki' ); ?></h5>
					<select {{{ data.inputAttrs }}} id="kirki-typography-font-family-{{{ data.id }}}" placeholder="<?php esc_attr_e( 'Select Font Family', 'kirki' ); ?>"></select>
				</div>
				<# if ( ! _.isUndefined( data.choices['font-backup'] ) && true === data.choices['font-backup'] ) { #>
					<div class="font-backup hide-on-standard-fonts kirki-font-backup-wrapper">
						<h5><?php esc_attr_e( 'Backup Font', 'kirki' ); ?></h5>
						<select {{{ data.inputAttrs }}} id="kirki-typography-font-backup-{{{ data.id }}}" placeholder="<?php esc_attr_e( 'Select Font Family', 'kirki' ); ?>"></select>
					</div>
				<# } #>
				<# if ( true === data.show_variants || false !== data.default.variant ) { #>
					<div class="variant kirki-variant-wrapper">
						<h5><?php esc_attr_e( 'Variant', 'kirki' ); ?></h5>
						<select {{{ data.inputAttrs }}} class="variant" id="kirki-typography-variant-{{{ data.id }}}"></select>
					</div>
				<# } #>
				<# if ( true === data.show_subsets ) { #>
					<div class="subsets hide-on-standard-fonts kirki-subsets-wrapper">
						<h5><?php esc_attr_e( 'Subset(s)', 'kirki' ); ?></h5>
						<select {{{ data.inputAttrs }}} class="subset" id="kirki-typography-subsets-{{{ data.id }}}"<# if ( _.isUndefined( data.choices['disable-multiple-variants'] ) || false === data.choices['disable-multiple-variants'] ) { #> multiple<# } #>>
							<# _.each( data.value.subsets, function( subset ) { #>
								<option value="{{ subset }}" selected="selected">{{ data.languages[ subset ] }}</option>
							<# } ); #>
						</select>
					</div>
				<# } #>
			<# } #>

			<# if ( data.default['font-size'] ) { #>
				<div class="font-size">
					<h5><?php esc_attr_e( 'Font Size', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['font-size'] }}"/>
				</div>
			<# } #>

			<# if ( data.default['line-height'] ) { #>
				<div class="line-height">
					<h5><?php esc_attr_e( 'Line Height', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['line-height'] }}"/>
				</div>
			<# } #>

			<# if ( data.default['letter-spacing'] ) { #>
				<div class="letter-spacing">
					<h5><?php esc_attr_e( 'Letter Spacing', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['letter-spacing'] }}"/>
				</div>
			<# } #>

			<# if ( data.default['word-spacing'] ) { #>
				<div class="word-spacing">
					<h5><?php esc_attr_e( 'Word Spacing', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['word-spacing'] }}"/>
				</div>
			<# } #>

			<# if ( data.default['text-align'] ) { #>
				<div class="text-align">
					<h5><?php esc_attr_e( 'Text Align', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="radio" value="inherit" name="_customize-typography-text-align-radio-{{ data.id }}" id="{{ data.id }}-text-align-inherit" <# if ( data.value['text-align'] === 'inherit' ) { #> checked="checked"<# } #>>
						<label for="{{ data.id }}-text-align-inherit">
							<span class="dashicons dashicons-editor-removeformatting"></span>
							<span class="screen-reader-text"><?php esc_attr_e( 'Inherit', 'kirki' ); ?></span>
						</label>
					</input>
					<input {{{ data.inputAttrs }}} type="radio" value="left" name="_customize-typography-text-align-radio-{{ data.id }}" id="{{ data.id }}-text-align-left" <# if ( data.value['text-align'] === 'left' ) { #> checked="checked"<# } #>>
						<label for="{{ data.id }}-text-align-left">
							<span class="dashicons dashicons-editor-alignleft"></span>
							<span class="screen-reader-text"><?php esc_attr_e( 'Left', 'kirki' ); ?></span>
						</label>
					</input>
					<input {{{ data.inputAttrs }}} type="radio" value="center" name="_customize-typography-text-align-radio-{{ data.id }}" id="{{ data.id }}-text-align-center" <# if ( data.value['text-align'] === 'center' ) { #> checked="checked"<# } #>>
						<label for="{{ data.id }}-text-align-center">
							<span class="dashicons dashicons-editor-aligncenter"></span>
							<span class="screen-reader-text"><?php esc_attr_e( 'Center', 'kirki' ); ?></span>
						</label>
					</input>
					<input {{{ data.inputAttrs }}} type="radio" value="right" name="_customize-typography-text-align-radio-{{ data.id }}" id="{{ data.id }}-text-align-right" <# if ( data.value['text-align'] === 'right' ) { #> checked="checked"<# } #>>
						<label for="{{ data.id }}-text-align-right">
							<span class="dashicons dashicons-editor-alignright"></span>
							<span class="screen-reader-text"><?php esc_attr_e( 'Right', 'kirki' ); ?></span>
						</label>
					</input>
					<input {{{ data.inputAttrs }}} type="radio" value="justify" name="_customize-typography-text-align-radio-{{ data.id }}" id="{{ data.id }}-text-align-justify" <# if ( data.value['text-align'] === 'justify' ) { #> checked="checked"<# } #>>
						<label for="{{ data.id }}-text-align-justify">
							<span class="dashicons dashicons-editor-justify"></span>
							<span class="screen-reader-text"><?php esc_attr_e( 'Justify', 'kirki' ); ?></span>
						</label>
					</input>
				</div>
			<# } #>

			<# if ( data.default['text-transform'] ) { #>
				<div class="text-transform">
					<h5><?php esc_attr_e( 'Text Transform', 'kirki' ); ?></h5>
					<select {{{ data.inputAttrs }}} id="kirki-typography-text-transform-{{{ data.id }}}">
						<option value="none"<# if ( 'none' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'None', 'kirki' ); ?></option>
						<option value="capitalize"<# if ( 'capitalize' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'Capitalize', 'kirki' ); ?></option>
						<option value="uppercase"<# if ( 'uppercase' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'Uppercase', 'kirki' ); ?></option>
						<option value="lowercase"<# if ( 'lowercase' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'Lowercase', 'kirki' ); ?></option>
						<option value="initial"<# if ( 'initial' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'Initial', 'kirki' ); ?></option>
						<option value="inherit"<# if ( 'inherit' === data.value['text-transform'] ) { #>selected<# } #>><?php esc_attr_e( 'Inherit', 'kirki' ); ?></option>
					</select>
				</div>
			<# } #>

			<# if ( false !== data.default['color'] && data.default['color'] ) { #>
				<div class="color">
					<h5><?php esc_attr_e( 'Color', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" data-palette="{{ data.palette }}" data-default-color="{{ data.default['color'] }}" value="{{ data.value['color'] }}" class="kirki-color-control" {{{ data.link }}} />
				</div>
			<# } #>

			<# if ( data.default['margin-top'] ) { #>
				<div class="margin-top">
					<h5><?php esc_attr_e( 'Margin Top', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['margin-top'] }}"/>
				</div>
			<# } #>

			<# if ( data.default['margin-bottom'] ) { #>
				<div class="margin-bottom">
					<h5><?php esc_attr_e( 'Margin Bottom', 'kirki' ); ?></h5>
					<input {{{ data.inputAttrs }}} type="text" value="{{ data.value['margin-bottom'] }}"/>
				</div>
			<# } #>
		</div>
		<#
		if ( ! _.isUndefined( data.value['font-family'] ) ) {
			data.value['font-family'] = data.value['font-family'].replace( /&quot;/g, '&#39' );
		}
		valueJSON = JSON.stringify( data.value ).replace( /'/g, '&#39' );
		#>
		<input class="typography-hidden-value" type="hidden" value='{{{ valueJSON }}}' {{{ data.link }}}>
		<?php
	}

	/**
	 * Formats variants.
	 *
	 * @access protected
	 * @since 3.0.0
	 * @param array $variants The variants.
	 * @return array
	 */
	protected function format_variants_array( $variants ) {

		$all_variants = Kirki_Fonts::get_all_variants();
		$final_variants = array();
		foreach ( $variants as $variant ) {
			if ( is_string( $variant ) ) {
				$final_variants[] = array(
					'id'    => $variant,
					'label' => isset( $all_variants[ $variant ] ) ? $all_variants[ $variant ] : $variant,
				);
			} elseif ( is_array( $variant ) && isset( $variant['id'] ) && isset( $variant['label'] ) ) {
				$final_variants[] = $variant;
			}
		}
		return $final_variants;
	}

	/**
	 * Gets standard fonts properly formatted for our control.
	 *
	 * @access protected
	 * @since 3.0.0
	 * @return array
	 */
	protected function get_standard_fonts() {
		// Add fonts to our JS objects.
		$standard_fonts = Kirki_Fonts::get_standard_fonts();

		$std_user_keys = array();
		if ( isset( $this->choices['fonts'] ) && isset( $this->choices['fonts']['standard'] ) ) {
			$std_user_keys = $this->choices['fonts']['standard'];
		}

		$standard_fonts_final = array();
		$default_variants = $this->format_variants_array( array(
			'regular',
			'italic',
			'700',
			'700italic',
		) );
		foreach ( $standard_fonts as $key => $font ) {
			if ( ( ! empty( $std_user_keys ) && ! in_array( $key, $std_user_keys, true ) ) || ! isset( $font['stack'] ) || ! isset( $font['label'] ) ) {
				continue;
			}
			$standard_fonts_final[] = array(
				'family'      => $font['stack'],
				'label'       => $font['label'],
				'subsets'     => array(),
				'is_standard' => true,
				'variants'    => ( isset( $font['variants'] ) ) ? $this->format_variants_array( $font['variants'] ) : $default_variants,
			);
		}
		return $standard_fonts_final;
	}

	/**
	 * Gets google fonts properly formatted for our control.
	 *
	 * @access protected
	 * @since 3.0.0
	 * @return array
	 */
	protected function get_google_fonts() {
		// Add fonts to our JS objects.
		$google_fonts = Kirki_Fonts::get_google_fonts();
		$all_variants = Kirki_Fonts::get_all_variants();
		$all_subsets  = Kirki_Fonts::get_google_font_subsets();

		$gf_user_keys = array();
		if ( isset( $this->choices['fonts'] ) && isset( $this->choices['fonts']['google'] ) ) {
			$gf_user_keys = $this->choices['fonts']['google'];
		}

		$google_fonts_final = array();
		foreach ( $google_fonts as $family => $args ) {
			if ( ! empty( $gf_user_keys ) && ! in_array( $family, $gf_user_keys, true ) ) {
				continue;
			}

			$label    = ( isset( $args['label'] ) ) ? $args['label'] : $family;
			$variants = ( isset( $args['variants'] ) ) ? $args['variants'] : array( 'regular', '700' );
			$subsets  = ( isset( $args['subsets'] ) ) ? $args['subsets'] : array();

			$available_variants = array();
			if ( is_array( $variants ) ) {
				foreach ( $variants as $variant ) {
					if ( array_key_exists( $variant, $all_variants ) ) {
						$available_variants[] = array(
							'id' => $variant,
							'label' => $all_variants[ $variant ],
						);
					}
				}
			}

			$available_subsets = array();
			if ( is_array( $subsets ) ) {
				foreach ( $subsets as $subset ) {
					if ( array_key_exists( $subset, $all_subsets ) ) {
						$available_subsets[] = array(
							'id' => $subset,
							'label' => $all_subsets[ $subset ],
						);
					}
				}
			}

			$google_fonts_final[] = array(
				'family'       => $family,
				'label'        => $label,
				'variants'     => $available_variants,
				'subsets'      => $available_subsets,
			);
		} // End foreach().
		return $google_fonts_final;
	}

	/**
	 * Render the control's content.
	 *
	 * @see WP_Customize_Control::render_content()
	 */
	protected function render_content() {}
}
