<?php
/**
 * Coronar
 * COVID19 Coronavirus Visual Dashboard
 * Exclusively on https://1.envato.market/coronar
 *
 * @encoding        UTF-8
 * @version         2.0.4
 * @copyright       (C) 2018 - 2021 Merkulove ( https://merkulov.design/ ). All rights reserved.
 * @license         Envato License https://1.envato.market/KYbje
 * @contributors    Nemirovskiy Vitaliy (nemirovskiyvitaliy@gmail.com), Dmitry Merkulov (dmitry@merkulov.design)
 * @support         help@merkulov.design
 **/

namespace Merkulove\Coronar\Unity;

/** Exit if accessed directly. */
if ( ! defined( 'ABSPATH' ) ) {
    header( 'Status: 403 Forbidden' );
    header( 'HTTP/1.1 403 Forbidden' );
    exit;
}

/**
 * Unity theme report.
 * System report handler class responsible for generating a report for the theme.
 *
 * @since 1.0.0
 **/
final class ReporterTheme {

    /**
     * The one true ReporterTheme.
     *
     * @var ReporterTheme
     **/
    private static $instance;

	/**
	 * Theme.
	 *
	 * Holds the sites theme object.
	 *
	 * @since 1.0.0
	 * @access private
	 *
	 * @var \WP_Theme WordPress theme object.
	 **/
	private $theme = null;

	/**
	 * Get theme reporter title.
	 *
	 * Retrieve theme reporter title.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return string Reporter title.
	 **/
	public function get_title() {
		return 'Theme';
	}

	/**
	 * Get theme report fields.
	 *
	 * Retrieve the required fields for the theme report.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array Required report fields with field ID and field label.
	 **/
	public function get_fields() {
		$fields = [
			'name' => 'Name',
			'version' => 'Version',
			'author' => 'Author',
			'is_child_theme' => 'Child Theme',
		];

		if ( $this->get_parent_theme() ) {
			$parent_fields = [
				'parent_name' => 'Parent Theme Name',
				'parent_version' => 'Parent Theme Version',
				'parent_author' => 'Parent Theme Author',
			];
			$fields = array_merge( $fields, $parent_fields );
		}

		return $fields;
	}

	/**
	 * Get theme.
	 *
	 * Retrieve the theme.
	 *
	 * @since 1.0.0
	 * @access protected
	 *
	 * @return \WP_Theme WordPress theme object.
	 **/
	protected function _get_theme() {
		if ( is_null( $this->theme ) ) {
			$this->theme = wp_get_theme();
		}
		return $this->theme;
	}

	/**
	 * Get parent theme.
	 *
	 * Retrieve the parent theme.
	 *
	 * @since 1.0.0
	 * @access protected
	 *
	 * @return \WP_Theme|false WordPress theme object, or false if the current theme is not a child theme.
	 **/
	protected function get_parent_theme() {
		return $this->_get_theme()->parent();
	}

	/**
	 * Get theme name.
	 *
	 * Retrieve the theme name.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The theme name.
	 * }
	 **/
	public function get_name() {
		return [
			'value' => $this->_get_theme()->get( 'Name' ),
		];
	}

	/**
	 * Get theme author.
	 *
	 * Retrieve the theme author.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The theme author.
	 * }
	 **/
	public function get_author() {
		return [
			'value' => $this->_get_theme()->get( 'Author' ),
		];
	}

	/**
	 * Get theme version.
	 *
	 * Retrieve the theme version.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The theme version.
	 * }
	 **/
	public function get_version() {
		return [
			'value' => $this->_get_theme()->get( 'Version' ),
		];
	}

	/**
	 * Is the theme is a child theme.
	 *
	 * Whether the theme is a child theme.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value          Yes if the theme is a child theme, No otherwise.
	 *    @type string $recommendation Theme source code modification recommendation.
	 * }
	 **/
	public function get_is_child_theme() {
		$is_child_theme = is_child_theme();

		$result = [
			'value' => $is_child_theme ? 'Yes' : 'No',
		];

		if ( ! $is_child_theme ) {
			$result['recommendation'] = sprintf(
				/* translators: %s: Codex URL */
				_x( 'If you want to modify the source code of your theme, we recommend using a <a href="%s">child theme</a>.', 'System Info', 'coronar' ),
				'https://codex.wordpress.org/Child_Themes'
			);
		}

		return $result;
	}

	/**
	 * Get parent theme version.
	 *
	 * Retrieve the parent theme version.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The parent theme version.
	 * }
	 **/
	public function get_parent_version() {
		return [
			'value' => $this->get_parent_theme()->get( 'Version' ),
		];
	}

	/**
	 * Get parent theme author.
	 *
	 * Retrieve the parent theme author.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The parent theme author.
	 * }
	 **/
	public function get_parent_author() {
		return [
			'value' => $this->get_parent_theme()->get( 'Author' ),
		];
	}

	/**
	 * Get parent theme name.
	 *
	 * Retrieve the parent theme name.
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array {
	 *    Report data.
	 *
	 *    @type string $value The parent theme name.
	 * }
	 **/
	public function get_parent_name() {
		return [
			'value' => $this->get_parent_theme()->get( 'Name' ),
		];
	}

    /**
     * Get report.
     * Retrieve the report with all it's containing fields.
     *
     * @since 1.0.0
     * @access public
     *
     * @return array {
     *    Report fields.
     *
     *    @type string $name Field name.
     *    @type string $label Field label.
     * }
     **/
    public function get_report() {

        $result = [];

        foreach ( $this->get_fields() as $field_name => $field_label ) {

            $method = 'get_' . $field_name;

            $reporter_field = [
                'name' => $field_name,
                'label' => $field_label,
            ];



            /** @noinspection SlowArrayOperationsInLoopInspection */
            $reporter_field = array_merge( $reporter_field, $this->$method() );

            $result[ $field_name ] = $reporter_field;

        }

        return $result;

    }

    /**
     * Main ReporterTheme Instance.
     *
     * Insures that only one instance of ReporterTheme exists in memory at any one time.
     *
     * @static
     * @since 1.0.0
     * @return ReporterTheme
     **/
    public static function get_instance() {

        if ( ! isset( self::$instance ) && ! ( self::$instance instanceof self ) ) {

            self::$instance = new self;

        }

        return self::$instance;

    }

}