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<?php
/**
 * Main Class file for `WP_OSA`
 *
 * Main class that deals with all other classes.
 *
 * Thanks to ahmadawais https://github.com/ahmadawais/WP-OOP-Settings-API
 *
 * @since   1.0.0
 * @package WPOSA
 */

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

/**
 * WP_OSA.
 *
 * WP Settings API Class.
 *
 * @since 2.0.0
 */

if ( ! class_exists( 'WP_OSA' ) ) :

class WP_OSA {

/**
		 * Sections array.
		 *
		 * @var   array
		 * @since 2.0.0
		 */
		private $sections_array = [];

/**
		 * Fields array.
		 *
		 * @var   array
		 * @since 2.0.0
		 */
		private $fields_array = [];

/**
		 * Constructor.
		 *
		 * @since  1.0.0
		 */
		public function __construct() {
			// Enqueue the admin scripts.
			add_action( 'admin_enqueue_scripts', [ $this, 'admin_scripts' ] );

// Hook it up.
			add_action( 'admin_init', [ $this, 'admin_init' ] );

// Menu.
			add_action( 'admin_menu', [ $this, 'admin_menu' ] );

if ( ! defined( 'WPOSA_VERSION' ) ) {
				define( 'WPOSA_VERSION', WOO_TITLE_LIMIT_VERSION );
			}

}

/**
		 * Admin Scripts.
		 *
		 * @since 2.0.0
		 */
		public function admin_scripts() {
			// jQuery is needed.
			wp_enqueue_script( 'jquery' );

// Color Picker.
			wp_enqueue_script(
				'iris',
				admin_url( 'js/iris.min.js' ),
				[
					'jquery-ui-draggable',
					'jquery-ui-slider',
					'jquery-touch-punch',
				],
				FALSE,
				1
			);

// Media Uploader.
			wp_enqueue_media();
		}

/**
		 * Set Sections.
		 *
		 * @param array $sections
		 *
		 * @since 2.0.0
		 */
		public function set_sections( $sections ) {
			// Bail if not array.
			if ( ! is_array( $sections ) ) {
				return FALSE;
			}

// Assign to the sections array.
			$this->sections_array = $sections;

return $this;
		}

/**
		 * Add a single section.
		 *
		 * @param array $section
		 *
		 * @since 2.0.0
		 */
		public function add_section( $section ) {
			// Bail if not array.
			if ( ! is_array( $section ) ) {
				return FALSE;
			}

// Assign the section to sections array.
			$this->sections_array[] = $section;

return $this;
		}

/**
		 * Set Fields.
		 *
		 * @since 2.0.0
		 */
		public function set_fields( $fields ) {
			// Bail if not array.
			if ( ! is_array( $fields ) ) {
				return FALSE;
			}

// Assign the fields.
			$this->fields_array = $fields;

return $this;
		}

/**
		 * Add a single field.
		 *
		 * @since 2.0.0
		 */
		public function add_field( $section, $field_array ) {
			// Set the defaults
			$defaults = [
				'id'   => '',
				'name' => '',
				'desc' => '',
				'type' => 'text',
			];

// Combine the defaults with user's arguements.
			$arg = wp_parse_args( $field_array, $defaults );

// Each field is an array named against its section.
			$this->fields_array[ $section ][] = $arg;

return $this;
		}

/**
		 * Initialize API.
		 *
		 * Initializes and registers the settings sections and fields.
		 * Usually this should be called at `admin_init` hook.
		 *
		 * @since  1.0.0
		 */
		function admin_init() {
			/**
			 * Register the sections.
			 *
			 * Sections array is like this:
			 *
			 * $sections_array = array (
			 *   $section_array,
			 *   $section_array,
			 *   $section_array,
			 * );
			 *
			 * Section array is like this:
			 *
			 * $section_array = array (
			 *   'id'    => 'section_id',
			 *   'title' => 'Section Title'
			 * );
			 *
			 * @since 2.0.0
			 */
			foreach ( $this->sections_array as $section ) {
				if ( FALSE == get_option( $section['id'] ) ) {
					// Add a new field as section ID.
					add_option( $section['id'] );
				}

// Deals with sections description.
				if ( isset( $section['desc'] ) && ! empty( $section['desc'] ) ) {
					// Build HTML.
					$section['desc'] = '<div class="inside">' . $section['desc'] . '</div>';

// Create the callback for description.
					$callback = function () use ( $section ) {
						echo str_replace( '"', '\"', $section['desc'] );
					};

} elseif ( isset( $section['callback'] ) ) {
					$callback = $section['callback'];
				} else {
					$callback = NULL;
				}

/**
				 * Add a new section to a settings page.
				 *
				 * @param string $id
				 * @param string $title
				 * @param callable $callback
				 * @param string $page | Page is same as section ID.
				 *
				 * @since 2.0.0
				 */
				add_settings_section( $section['id'], $section['title'], $callback, $section['id'] );
			} // foreach ended.

/**
			 * Register settings fields.
			 *
			 * Fields array is like this:
			 *
			 * $fields_array = array (
			 *   $section => $field_array,
			 *   $section => $field_array,
			 *   $section => $field_array,
			 * );
			 *
			 *
			 * Field array is like this:
			 *
			 * $field_array = array (
			 *   'id'   => 'id',
			 *   'name' => 'Name',
			 *   'type' => 'text',
			 * );
			 *
			 * @since 2.0.0
			 */
			foreach ( $this->fields_array as $section => $field_array ) {
				foreach ( $field_array as $field ) {
					// ID.
					$id = isset( $field['id'] ) ? $field['id'] : FALSE;

// Type.
					$type = isset( $field['type'] ) ? $field['type'] : 'text';

// Name.
					$name = isset( $field['name'] ) ? $field['name'] : 'No Name Added';

// Label for.
					$label_for = "{$section}[{$field['id']}]";

// Description.
					$description = isset( $field['desc'] ) ? $field['desc'] : '';

// Size.
					$size = isset( $field['size'] ) ? $field['size'] : NULL;

// Options.
					$options = isset( $field['options'] ) ? $field['options'] : '';

// Standard default value.
					$default = isset( $field['default'] ) ? $field['default'] : '';

// Standard default placeholder.
					$placeholder = isset( $field['placeholder'] ) ? $field['placeholder'] : '';

// Sanitize Callback.
					$sanitize_callback = isset( $field['sanitize_callback'] ) ? $field['sanitize_callback'] : '';

$args = [
						'id'                => $id,
						'type'              => $type,
						'name'              => $name,
						'label_for'         => $label_for,
						'desc'              => $description,
						'section'           => $section,
						'size'              => $size,
						'options'           => $options,
						'std'               => $default,
						'placeholder'       => $placeholder,
						'sanitize_callback' => $sanitize_callback,
					];

/**
					 * Add a new field to a section of a settings page.
					 *
					 * @param string $id
					 * @param string $title
					 * @param callable $callback
					 * @param string $page
					 * @param string $section = 'default'
					 * @param array $args = array()
					 *
					 * @since 2.0.0
					 */

// @param string 	$id
					$field_id = $section . '[' . $field['id'] . ']';

add_settings_field(
						$field_id,
						$name,
						[ $this, 'callback_' . $type ],
						$section,
						$section,
						$args
					);
				} // foreach ended.
			} // foreach ended.

// Creates our settings in the fields table.
			foreach ( $this->sections_array as $section ) {
				/**
				 * Registers a setting and its sanitization callback.
				 *
				 * @param string $field_group | A settings group name.
				 * @param string $field_name | The name of an option to sanitize and save.
				 * @param callable $sanitize_callback = ''
				 *
				 * @since 2.0.0
				 */
				register_setting( $section['id'], $section['id'], [
					$this,
					'sanitize_fields',
				] );
			} // foreach ended.

} // admin_init() ended.

/**
		 * Sanitize callback for Settings API fields.
		 *
		 * @since 2.0.0
		 */
		public function sanitize_fields( $fields ) {
			foreach ( $fields as $field_slug => $field_value ) {
				$sanitize_callback = $this->get_sanitize_callback( $field_slug );

// If callback is set, call it.
				if ( $sanitize_callback ) {
					$fields[ $field_slug ] = call_user_func( $sanitize_callback, $field_value );
					continue;
				}
			}

return $fields;
		}

/**
		 * Get sanitization callback for given option slug
		 *
		 * @param string $slug option slug.
		 *
		 * @return mixed string | bool false
		 * @since  1.0.0
		 */
		function get_sanitize_callback( $slug = '' ) {
			if ( empty( $slug ) ) {
				return FALSE;
			}

// Iterate over registered fields and see if we can find proper callback.
			foreach ( $this->fields_array as $section => $field_array ) {
				foreach ( $field_array as $field ) {
					if ( $field['name'] != $slug ) {
						continue;
					}

// Return the callback name.
					return isset( $field['sanitize_callback'] ) && is_callable( $field['sanitize_callback'] ) ? $field['sanitize_callback'] : FALSE;
				}
			}

return FALSE;
		}

/**
		 * Get field description for display
		 *
		 * @param array $args settings field args
		 */
		public function get_field_description( $args ) {
			if ( ! empty( $args['desc'] ) ) {
				$desc = sprintf( '<p class="description">%s</p>', $args['desc'] );
			} else {
				$desc = '';
			}

return $desc;
		}

/**
		 * Displays a title field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_title( $args ) {
			$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'] ) );
			if ( '' !== $args['name'] ) {
				$name = $args['name'];
			} else {
			};
			$type = isset( $args['type'] ) ? $args['type'] : 'title';

$html = '';
			echo $html;
		}

/**
		 * Displays a text field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_text( $args ) {

$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'], $args['placeholder'] ) );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
			$type  = isset( $args['type'] ) ? $args['type'] : 'text';

$html = sprintf( '<input type="%1$s" class="%2$s-text" id="%3$s[%4$s]" name="%3$s[%4$s]" value="%5$s"placeholder="%6$s"/>', $type, $size, $args['section'], $args['id'], $value, $args['placeholder'] );
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays a url field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_url( $args ) {
			$this->callback_text( $args );
		}

/**
		 * Displays a number field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_number( $args ) {
			$this->callback_text( $args );
		}

/**
		 * Displays a checkbox for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_checkbox( $args ) {

$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'] ) );

$html = '<fieldset>';
			$html .= sprintf( '<label for="wposa-%1$s[%2$s]">', $args['section'], $args['id'] );
			$html .= sprintf( '<input type="hidden" name="%1$s[%2$s]" value="off" />', $args['section'], $args['id'] );
			$html .= sprintf( '<input type="checkbox" class="checkbox" id="wposa-%1$s[%2$s]" name="%1$s[%2$s]" value="on" %3$s />', $args['section'], $args['id'], checked( $value, 'on', FALSE ) );
			$html .= sprintf( '%1$s</label>', $args['desc'] );
			$html .= '</fieldset>';

echo $html;
		}

/**
		 * Displays a multicheckbox a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_multicheck( $args ) {

$value = $this->get_option( $args['id'], $args['section'], $args['std'] );

$html = '<fieldset>';
			foreach ( $args['options'] as $key => $label ) {
				$checked = isset( $value[ $key ] ) ? $value[ $key ] : '0';
				$html    .= sprintf( '<label for="wposa-%1$s[%2$s][%3$s]">', $args['section'], $args['id'], $key );
				$html    .= sprintf( '<input type="checkbox" class="checkbox" id="wposa-%1$s[%2$s][%3$s]" name="%1$s[%2$s][%3$s]" value="%3$s" %4$s />', $args['section'], $args['id'], $key, checked( $checked, $key, FALSE ) );
				$html    .= sprintf( '%1$s</label><br>', $label );
			}
			$html .= $this->get_field_description( $args );
			$html .= '</fieldset>';

echo $html;
		}

/**
		 * Displays a multicheckbox a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_radio( $args ) {

$value = $this->get_option( $args['id'], $args['section'], $args['std'] );

$html = '<fieldset>';
			foreach ( $args['options'] as $key => $label ) {
				$html .= sprintf( '<label for="wposa-%1$s[%2$s][%3$s]">', $args['section'], $args['id'], $key );
				$html .= sprintf( '<input type="radio" class="radio" id="wposa-%1$s[%2$s][%3$s]" name="%1$s[%2$s]" value="%3$s" %4$s />', $args['section'], $args['id'], $key, checked( $value, $key, FALSE ) );
				$html .= sprintf( '%1$s</label><br>', $label );
			}
			$html .= $this->get_field_description( $args );
			$html .= '</fieldset>';

echo $html;
		}

/**
		 * Displays a selectbox for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_select( $args ) {

$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'] ) );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';

$html = sprintf( '<select class="%1$s" name="%2$s[%3$s]" id="%2$s[%3$s]">', $size, $args['section'], $args['id'] );
			foreach ( $args['options'] as $key => $label ) {
				$html .= sprintf( '<option value="%s"%s>%s</option>', $key, selected( $value, $key, FALSE ), $label );
			}
			$html .= sprintf( '</select>' );
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays a textarea for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_textarea( $args ) {

$value = esc_textarea( $this->get_option( $args['id'], $args['section'], $args['std'] ) );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';

$html = sprintf( '<textarea rows="5" cols="55" class="%1$s-text" id="%2$s[%3$s]" name="%2$s[%3$s]">%4$s</textarea>', $size, $args['section'], $args['id'], $value );
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays a textarea for a settings field
		 *
		 * @param array $args settings field args.
		 *
		 * @return string
		 */
		function callback_html( $args ) {
			echo $this->get_field_description( $args );
		}

/**
		 * Displays a rich text textarea for a settings field
		 *
		 * @param array $args settings field args.
		 */
		function callback_wysiwyg( $args ) {

$value = $this->get_option( $args['id'], $args['section'], $args['std'] );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : '500px';

echo '<div style="max-width: ' . $size . ';">';

$editor_settings = [
				'teeny'         => TRUE,
				'textarea_name' => $args['section'] . '[' . $args['id'] . ']',
				'textarea_rows' => 10,
			];
			if ( isset( $args['options'] ) && is_array( $args['options'] ) ) {
				$editor_settings = array_merge( $editor_settings, $args['options'] );
			}

wp_editor( $value, $args['section'] . '-' . $args['id'], $editor_settings );

echo '</div>';

echo $this->get_field_description( $args );
		}

/**
		 * Displays a file upload field for a settings field
		 *
		 * @param array $args settings field args.
		 */
		function callback_file( $args ) {

$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'] ) );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
			$id    = $args['section'] . '[' . $args['id'] . ']';
			$label = isset( $args['options']['button_label'] ) ?
				$args['options']['button_label'] :
				__( 'Choose File' );

$html = sprintf( '<input type="text" class="%1$s-text wpsa-url" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s"/>', $size, $args['section'], $args['id'], $value );
			$html .= '<input type="button" class="button wpsa-browse" value="' . $label . '" />';
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays an image upload field with a preview
		 *
		 * @param array $args settings field args.
		 */
		function callback_image( $args ) {

echo $html;
		}

/**
		 * Displays a password field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_password( $args ) {

$value = esc_attr( $this->get_option( $args['id'], $args['section'], $args['std'] ) );
			$size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';

$html = sprintf( '<input type="password" class="%1$s-text" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s"/>', $size, $args['section'], $args['id'], $value );
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays a color picker field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_color( $args ) {

$html = sprintf( '<input type="text" class="%1$s-text color-picker" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s" data-default-color="%5$s" placeholder="%6$s" />', $size, $args['section'], $args['id'], $value, $args['std'], $args['placeholder'] );
			$html .= $this->get_field_description( $args );

echo $html;
		}

/**
		 * Displays a separator field for a settings field
		 *
		 * @param array $args settings field args
		 */
		function callback_separator( $args ) {
			$type = isset( $args['type'] ) ? $args['type'] : 'separator';

$html = '';
			$html .= '<div class="wpsa-settings-separator"></div>';
			echo $html;
		}

/**
		 * Get the value of a settings field
		 *
		 * @param string $option settings field name.
		 * @param string $section the section name this field belongs to.
		 * @param string $default default text if it's not found.
		 *
		 * @return string
		 */
		function get_option( $option, $section, $default = '' ) {

$options = get_option( $section );

if ( isset( $options[ $option ] ) ) {
				return $options[ $option ];
			}

return $default;
		}

/**
		 * Add submenu page to the Settings main menu.
		 *
		 * @param string $page_title
		 * @param string $menu_title
		 * @param string $capability
		 * @param string $menu_slug
		 * @param callable $function = ''
		 *
		 * @author Ahmad Awais
		 * @since  [version]
		 */

// public function admin_menu( $page_title = 'Page Title', $menu_title = 'Menu Title', $capability = 'manage_options', $menu_slug = 'settings_page', $callable = 'plugin_page' ) {
		public function admin_menu() {
			// add_options_page( $page_title, $menu_title, $capability, $menu_slug, array( $this, $callable ) );
			add_submenu_page(
				'options-general.php',
				'Woo Title Limit',
				'Woo Title Limit',
				'manage_options',
				'woo-title-limit',
				[ $this, 'plugin_page' ]
			);
		}

public function plugin_page() {
			echo '<div class="wrap">';
			echo '<h1>Woo Title Limit - Options <span style="font-size:50%;">v' . WPOSA_VERSION . '</span></h1>';

$this->show_navigation();
			$this->show_forms();
			echo '</div>';
		}

/**
		 * Show navigations as tab
		 *
		 * Shows all the settings section labels as tab
		 */
		function show_navigation() {
			$html = '<h2 class="nav-tab-wrapper">';

foreach ( $this->sections_array as $tab ) {
				$html .= sprintf( '<a href="#%1$s" class="nav-tab" id="%1$s-tab">%2$s</a>', $tab['id'], $tab['title'] );
			}

$html .= '</h2>';

echo $html;
		}

/**
		 * Show the section settings forms
		 *
		 * This function displays every sections in a different form
		 */
		function show_forms() {
			?>
            <div class="metabox-holder">
				<?php foreach ( $this->sections_array as $form ) { ?>
                    
                    <div id="<?php echo $form['id']; ?>" class="group">
                        <form method="post" action="options.php">
							<?php
							do_action( 'wsa_form_top_' . $form['id'], $form );
							settings_fields( $form['id'] );
							do_settings_sections( $form['id'] );
							do_action( 'wsa_form_bottom_' . $form['id'], $form );
							?>
                            <div style="padding-left: 10px">
								<?php submit_button( NULL, 'primary', 'submit_' . $form['id'] ); ?>
                            </div>
                        </form>
                    </div>
				<?php } ?>
            </div>
			<?php
			$this->script();
		}

/**
		 * Tabbable JavaScript codes & Initiate Color Picker
		 *
		 * This code uses localstorage for displaying active tabs
		 */
		function script() {
			?>
            <script>
                jQuery(document).ready(function ($) {

//Initiate Color Picker.
                    $('.color-picker').iris();

// Switches option sections
                    $('.group').hide();
                    var activetab = '';
                    if ('undefined' != typeof localStorage) {
                        activetab = localStorage.getItem('activetab');
                    }
                    if ('' != activetab && $(activetab).length) {
                        $(activetab).fadeIn();
                    } else {
                        $('.group:first').fadeIn();
                    }
                    $('.group .collapsed').each(function () {
                        $(this)
                            .find('input:checked')
                            .parent()
                            .parent()
                            .parent()
                            .nextAll()
                            .each(function () {
                                if ($(this).hasClass('last')) {
                                    $(this).removeClass('hidden');
                                    return false;
                                }
                                $(this)
                                    .filter('.hidden')
                                    .removeClass('hidden');
                            });
                    });

if ('' != activetab && $(activetab + '-tab').length) {
                        $(activetab + '-tab').addClass('nav-tab-active');
                    } else {
                        $('.nav-tab-wrapper a:first').addClass('nav-tab-active');
                    }
                    $('.nav-tab-wrapper a').click(function (evt) {
                        $('.nav-tab-wrapper a').removeClass('nav-tab-active');
                        $(this)
                            .addClass('nav-tab-active')
                            .blur();
                        var clicked_group = $(this).attr('href');
                        if ('undefined' != typeof localStorage) {
                            localStorage.setItem('activetab', $(this).attr('href'));
                        }
                        $('.group').hide();
                        $(clicked_group).fadeIn();
                        evt.preventDefault();
                    });

$('.wpsa-browse').on('click', function (event) {
                        event.preventDefault();

var self = $(this);

// Create the media frame.
                        var file_frame = (wp.media.frames.file_frame = wp.media({
                            title: self.data('uploader_title'),
                            button: {
                                text: self.data('uploader_button_text')
                            },
                            multiple: false
                        }));

file_frame.on('select', function () {
                            attachment = file_frame
                                .state()
                                .get('selection')
                                .first()
                                .toJSON();

self
                                .prev('.wpsa-url')
                                .val(attachment.url)
                                .change();
                        });

// Finally, open the modal
                        file_frame.open();
                    });

$('input.wpsa-url')
                        .on('change keyup paste input', function () {
                            var self = $(this);
                            self
                                .next()
                                .parent()
                                .children('.wpsa-image-preview')
                                .children('img')
                                .attr('src', self.val());
                        })
                        .change();
                });

</script>

#wpbody-content .metabox-holder {
                    padding-top: 5px;
                }

.wpsa-image-preview img {
                    height: auto;
                    max-width: 70px;
                }

.wpsa-settings-separator {
                    background: #ccc;
                    border: 0;
                    color: #ccc;
                    height: 1px;
                    position: absolute;
                    left: 0;
                    width: 99%;
                }

.group .form-table input.color-picker {
                    max-width: 100px;
                }
            </style>
			<?php
		}

} // WP_OSA ended.

endif;