<?php

/**
 * Plugin Settings.
 *
 * @link    https://plugins360.com
 * @since   1.0.0
 *
 * @package Automatic_YouTube_Gallery
 */

// Exit if accessed directly
if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * AYG_Admin_Settings class.
 *
 * @since 1.0.0
 */
class AYG_Admin_Settings {

	/**
     * Settings tabs array.
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $tabs = array();
	
	/**
     * Settings sections array.
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $sections = array();
	
	/**
     * Settings fields array
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $fields = array();
	
	/**
	 * Add "Settings" menu.
	 *
	 * @since 1.0.0
	 */
	public function admin_menu() {	
        add_submenu_page(
			'automatic-youtube-gallery',
			__( 'Settings', 'automatic-youtube-gallery' ),
			__( 'Settings', 'automatic-youtube-gallery' ),
			'manage_options',
			'automatic-youtube-gallery-settings',
			array( $this, 'display_settings_form' )
		);
	}

	/**
	 * Display settings form.
	 *
	 * @since 1.0.0
	 */
	public function display_settings_form() {
        $gallery_settings = get_option( 'ayg_gallery_settings' );
	
        $active_tab   = isset( $_GET['tab'] ) && array_key_exists( $_GET['tab'], $this->tabs ) ? sanitize_text_field( $_GET['tab'] ) : 'general';
        $active_theme = $gallery_settings['theme'];

		require_once AYG_DIR . 'admin/templates/settings.php';		
	}

	/**
	 * Initiate settings.
	 *
	 * @since 1.0.0
	 */
	public function admin_init() {
		$this->tabs     = $this->get_tabs();
        $this->sections = $this->get_sections();
        $this->fields   = $this->get_fields();
		
        // Initialize settings
		$this->initialize_settings();		
	}

	/**
     * Get settings tabs.
     *
	 * @since  1.0.0
     * @return array $tabs Setting tabs array.
     */
    public function get_tabs() {	
		$tabs = array(
            'general'    => __( 'General', 'automatic-youtube-gallery' ),
            'gallery'    => __( 'Gallery', 'automatic-youtube-gallery' ),
            'player'     => __( 'Player', 'automatic-youtube-gallery' ),
            'livestream' => __( 'Livestream', 'automatic-youtube-gallery' ),
            'privacy'    => __( 'GDPR Compliance', 'automatic-youtube-gallery' )
		);
		
		return apply_filters( 'ayg_settings_tabs', $tabs );	
	}

	/**
     * Get settings sections.
     *
	 * @since  1.0.0
     * @return array $sections Setting sections array.
     */
    public function get_sections() {		
		$sections = array(
			array(
                'id'          => 'ayg_general_settings',
                'title'       => __( 'General Settings', 'automatic-youtube-gallery' ),
                'description' => '',
                'tab'         => 'general'
            ),
            array(
                'id'          => 'ayg_gallery_settings',
                'title'       => __( 'Gallery Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'gallery'
            ),
            array(
                'id'          => 'ayg_player_settings',
                'title'       => __( 'Player Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'player'
            ),
            array(
                'id'          => 'ayg_livestream_settings',
                'title'       => __( 'Livestream Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'livestream'
            ),
            array(
                'id'          => 'ayg_privacy_settings',
                'title'       => __( 'GDPR Compliance', 'automatic-youtube-gallery' ),
                'description' => __( 'These options will help with privacy restrictions such as GDPR and the EU Cookie Law.', 'automatic-youtube-gallery' ),
                'tab'         => 'privacy'
            ),				
        );
		
		return apply_filters( 'ayg_settings_sections', $sections );		
	}

	/**
     * Get settings fields.
     *
	 * @since     1.0.0
     * @return    array    $fields    Setting fields array.
     */
    public function get_fields() {	
		$fields = array(
			'ayg_general_settings' => array(
				array(
                    'name'              => 'api_key',
                    'label'             => __( 'Youtube API Key', 'automatic-youtube-gallery' ),
                    'description'       => sprintf( 
						__( 'Follow <a href="%s" target="_blank">this guide</a> to get your own API key.', 'automatic-youtube-gallery' ),  
						'https://plugins360.com/automatic-youtube-gallery/how-to-get-youtube-api-key/' 
					),
                    'type'              => 'text',
                    'sanitize_callback' => 'sanitize_text_field'
                ),
                array(
                    'name'              => 'development_mode',
                    'label'             => __( 'Development Mode', 'automatic-youtube-gallery' ),
                    'description'       => __( 'Do not cache API results when checked. We strongly recommend disabling this option when your site is live.', 'automatic-youtube-gallery' ),
                    'type'              => 'checkbox',
                    'sanitize_callback' => 'intval'
                ),
            ),
            'ayg_gallery_settings' => ayg_get_gallery_settings_fields(),
            'ayg_player_settings' => ayg_get_player_settings_fields(),
            'ayg_livestream_settings' => array(
				array(
                    'name'              => 'fallback_message',
                    'label'             => __( 'Fallback Message', 'automatic-youtube-gallery' ),
                    'description'       => __( 'Enter your Custom HTML message that should be displayed when there is no video streaming live.', 'automatic-youtube-gallery' ),
					'type'              => 'wysiwyg',
					'sanitize_callback' => 'wp_kses_post'
                )
            ),
            'ayg_privacy_settings' => array(
                array(
                    'name'              => 'cookie_consent',
                    'label'             => __( 'Cookie Consent', 'automatic-youtube-gallery' ),
                    'description'       => __( 'Ask for viewer consent to store YouTube cookies before showing videos.', 'automatic-youtube-gallery' ),
                    'type'              => 'checkbox',
                    'sanitize_callback' => 'intval'
                ),
                array(
                    'name'              => 'consent_message',
                    'label'             => __( 'Consent Message', 'automatic-youtube-gallery' ),
                    'description'       => '',
                    'type'              => 'wysiwyg',
                    'sanitize_callback' => 'wp_kses_post'
                    ),
                array(
                    'name'              => 'button_label',
                    'label'             => __( 'Button Label', 'automatic-youtube-gallery' ),
                    'description'       => '',
                    'type'              => 'text',
                    'sanitize_callback' => 'sanitize_text_field'
                )
            )
		);
		
		return apply_filters( 'ayg_settings_fields', $fields );		
	}

	/**
     * Initialize and registers the settings sections and fields to WordPress.
     *
     * @since 1.0.0
     */
    public function initialize_settings() {	
        // Register settings sections & fields
        foreach ( $this->sections as $section ) {
		
			$page_hook = "ayg_{$section['tab']}_settings";
			
			// Sections
            if ( false == get_option( $section['id'] ) ) {
                add_option( $section['id'] );
            }
			
            if ( isset( $section['description'] ) && ! empty( $section['description'] ) ) {
                $callback = array( $this, 'settings_section_callback' );
            } elseif ( isset( $section['callback'] ) ) {
                $callback = $section['callback'];
            } else {
                $callback = null;
            }
			
            add_settings_section( $section['id'], $section['title'], $callback, $page_hook );
			
			// Fields			
			$fields = $this->fields[ $section['id'] ];
			
			foreach ( $fields as $option ) {			
                $name     = $option['name'];
                $type     = isset( $option['type'] ) ? $option['type'] : 'text';
                $label    = isset( $option['label'] ) ? $option['label'] : '';
                $callback = isset( $option['callback'] ) ? $option['callback'] : array( $this, 'callback_' . $type );				
                $args     = array(
                    'id'                => $name,
                    'class'             => isset( $option['class'] ) ? $option['class'] : $name,
                    'label_for'         => "{$section['id']}[{$name}]",
                    'description'       => isset( $option['description'] ) ? $option['description'] : '',
                    'name'              => $label,
                    'section'           => $section['id'],
                    'size'              => isset( $option['size'] ) ? $option['size'] : null,
                    'options'           => isset( $option['options'] ) ? $option['options'] : '',
                    'sanitize_callback' => isset( $option['sanitize_callback'] ) ? $option['sanitize_callback'] : '',
                    'type'              => $type,
                    'placeholder'       => isset( $option['placeholder'] ) ? $option['placeholder'] : '',
                    'min'               => isset( $option['min'] ) ? $option['min'] : '',
                    'max'               => isset( $option['max'] ) ? $option['max'] : '',
                    'step'              => isset( $option['step'] ) ? $option['step'] : ''					
                );
				
                add_settings_field( "{$section['id']}[{$name}]", $label, $callback, $page_hook, $section['id'], $args );
            }
			
			// Creates our settings in the options table
        	register_setting( $page_hook, $section['id'], array( $this, 'sanitize_options' ) );			
        }		
    }
    
    /**
 	 * Displays a section description.
 	 *
	 * @since 1.0.0
	 * @param array $args Settings section args.
 	 */
	public function settings_section_callback( $args ) {
        foreach ( $this->sections as $section ) {
            if ( $section['id'] == $args['id'] ) {
                printf( '<div class="inside">%s</div>', sanitize_text_field( $section['description'] ) ); 
                break;
            }
        }
    }
	
	/**
     * Displays a text field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_text( $args ) {	
        $value       = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
        $type        = isset( $args['type'] ) ? $args['type'] : 'text';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="' . $args['placeholder'] . '"';
		
        $html        = sprintf( '<input type="%1$s" class="%2$s-text" id="%3$s[%4$s]" name="%3$s[%4$s]" value="%5$s"%6$s/>', $type, $size, $args['section'], $args['id'], $value, $placeholder );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a url field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_url( $args ) {
        $this->callback_text( $args );
	}
	
	/**
     * Displays a number field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_number( $args ) {	
        $value       = esc_attr( $this->get_option( $args['id'], $args['section'], 0 ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
        $type        = isset( $args['type'] ) ? $args['type'] : 'number';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="' . $args['placeholder'] . '"';
        $min         = empty( $args['min'] ) ? '' : ' min="' . $args['min'] . '"';
        $max         = empty( $args['max'] ) ? '' : ' max="' . $args['max'] . '"';
        $step        = empty( $args['max'] ) ? '' : ' step="' . $args['step'] . '"';
		
        $html        = sprintf( '<input type="%1$s" class="%2$s-number" id="%3$s[%4$s]" name="%3$s[%4$s]" value="%5$s"%6$s%7$s%8$s%9$s/>', $type, $size, $args['section'], $args['id'], $value, $placeholder, $min, $max, $step );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a checkbox for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_checkbox( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], 0 ) );
		
        $html  = '<fieldset>';
        $html  .= sprintf( '<label for="%1$s[%2$s]">', $args['section'], $args['id'] );
        $html  .= sprintf( '<input type="hidden" name="%1$s[%2$s]" value="0" />', $args['section'], $args['id'] );
        $html  .= sprintf( '<input type="checkbox" class="checkbox" id="%1$s[%2$s]" name="%1$s[%2$s]" value="1" %3$s />', $args['section'], $args['id'], checked( $value, 1, false ) );
        $html  .= sprintf( '%1$s</label>', $args['description'] );
        $html  .= '</fieldset>';
		
        echo $html;		
	}
	
	/**
     * Displays a multicheckbox for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_multicheck( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], array() );
		
        $html  = '<fieldset>';
        $html .= sprintf( '<input type="hidden" name="%1$s[%2$s]" value="" />', $args['section'], $args['id'] );
        foreach ( $args['options'] as $key => $label ) {
            $checked  = in_array( $key, $value ) ? 'checked="checked"' : '';
            $html    .= sprintf( '<label for="%1$s[%2$s][%3$s]">', $args['section'], $args['id'], $key );
            $html    .= sprintf( '<input type="checkbox" class="checkbox" id="%1$s[%2$s][%3$s]" name="%1$s[%2$s][%3$s]" value="%3$s" %4$s />', $args['section'], $args['id'], $key, $checked );
            $html    .= sprintf( '%1$s</label><br>',  $label );
        }
        $html .= $this->get_field_description( $args );
        $html .= '</fieldset>';
		
        echo $html;		
	}
	
	/**
     * Displays a radio button for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_radio( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], '' );
		
        $html  = '<fieldset>';
        foreach ( $args['options'] as $key => $label ) {
            $html .= sprintf( '<label for="%1$s[%2$s][%3$s]">',  $args['section'], $args['id'], $key );
            $html .= sprintf( '<input type="radio" class="radio" id="%1$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.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_select( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $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.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_textarea( $args ) {	
        $value       = esc_textarea( $this->get_option( $args['id'], $args['section'], '' ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="'.$args['placeholder'].'"';
		
        $html        = sprintf( '<textarea rows="5" cols="55" class="%1$s-text" id="%2$s[%3$s]" name="%2$s[%3$s]"%4$s>%5$s</textarea>', $size, $args['section'], $args['id'], $placeholder, $value );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays the html for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_html( $args ) {
        echo $this->get_field_description( $args );
	}
	
	/**
     * Displays a rich text textarea for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_wysiwyg( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], '' );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : '500px';
		
        echo '<div style="max-width: ' . $size . ';">';
        $editor_settings = array(
            '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.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_file( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $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', 'automatic-youtube-gallery' );
		
        $html  = sprintf( '<input type="text" class="%1$s-text ayg-settings-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 ayg-settings-browse" value="' . $label . '" />';
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a password field for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_password( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $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.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_color( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '#ffffff' ) );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular';
		
        $html  = sprintf( '<input type="text" class="%1$s-text ayg-color-picker" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s" data-default-color="%5$s" />', $size, $args['section'], $args['id'], $value, '#ffffff' );
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a select box for creating the pages select box.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_pages( $args ) {	
        $dropdown_args = array(
			'show_option_none'  => '-- ' . __( 'Select a page', 'automatic-youtube-gallery' ) . ' --',
			'option_none_value' => -1,
            'selected'          => esc_attr($this->get_option($args['id'], $args['section'], -1 ) ),
            'name'              => $args['section'] . '[' . $args['id'] . ']',
            'id'                => $args['section'] . '[' . $args['id'] . ']',
            'echo'              => 0			
        );
		
        $html  = wp_dropdown_pages( $dropdown_args );
		$html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Get field description for display.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function get_field_description( $args ) {	
        if ( ! empty( $args['description'] ) ) {
            $description = sprintf( '<p class="description">%s</p>', $args['description'] );
        } else {
            $description = '';
        }
		
        return $description;		
	}
	
	/**
     * Sanitize callback for Settings API.
     *
	 * @since  1.0.0
     * @param  array $options The unsanitized collection of options.
     * @return                The collection of sanitized values.
     */
    public function sanitize_options( $options ) {	
        if ( ! $options ) {
            return $options;
        }
		
        foreach ( $options as $option_slug => $option_value ) {		
            $sanitize_callback = $this->get_sanitize_callback( $option_slug );
			
            // If callback is set, call it
            if ( $sanitize_callback ) {
                $options[ $option_slug ] = call_user_func( $sanitize_callback, $option_value );
                continue;
            }			
        }
		
        return $options;		
	}
	
	/**
     * Get sanitization callback for given option slug.
     *
	 * @since  1.0.0
     * @param  string $slug Option slug.
     * @return mixed        String or bool false.
     */
    public 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 as $section => $options ) {
            foreach ( $options as $option ) {
                if ( $option['name'] != $slug ) {
                    continue;
                }
				
                // Return the callback name
                return isset( $option['sanitize_callback'] ) && is_callable( $option['sanitize_callback'] ) ? $option['sanitize_callback'] : false;
            }
        }
		
        return false;		
    }    

    /**
     * Get the value of a settings field
     *
	 * @since  1.0.0
     * @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
     */
    public function get_option( $option, $section, $default = '' ) {	
        $options = get_option( $section );
		
        if ( ! empty( $options[ $option ] ) ) {
            return $options[ $option ];
        }
		
        return $default;		
    }
    
    /**
	 * Dump our plugin transients.
	 *
	 * @since 1.3.0
	 */
	public function ajax_callback_delete_cache() {
        check_ajax_referer( 'ayg_ajax_nonce', 'security' );

        ayg_delete_cache();
        wp_die();
    }

}