<?php
/**
 * Capabilities class.
 *
 * @access public
 * @since 6.0.0
 *
 * @package ExactMetrics
 * @subpackage Capabilities
 * @author  Chris Christoff
 */

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

/**
 * Map ExactMetrics Capabilities.
 *
 * Using meta caps, we're creating virtual capabilities that are
 * for backwards compatibility reasons given to users with manage_options, and to
 * users who have at least of the roles selected in the options on the permissions
 * tab of the ExactMetrics settings.
 *
 * @access public
 * @since 6.0.0
 *
 * @param array  $caps Array of capabilities the user has.
 * @param string $cap The current cap being filtered.
 * @param int    $user_id User to check permissions for.
 * @param array  $args Extra parameters. Unused.
 * @return array Array of caps needed to have this meta cap. If returned array is empty, user has the capability.
 */
function exactmetrics_add_capabilities( $caps, $cap, $user_id, $args ) {
 
    switch( $cap ) {
        case 'exactmetrics_view_dashboard' :
            $roles = exactmetrics_get_option( 'view_reports', array() );

            $user_can_via_settings = false;
            if ( ! empty( $roles ) && is_array( $roles ) ) {
                foreach ( $roles as $role ) {
                    if ( is_string( $role ) ) {
                        if ( user_can( $user_id, $role ) ) {
                            $user_can_via_settings = true;
                            break;
                        }
                    }
                }
            } else if ( ! empty( $roles ) && is_string( $roles ) ) {
                if ( user_can( $user_id, $roles ) ) {
                    $user_can_via_settings = true;
                }
            }

            if ( user_can( $user_id, 'manage_options' ) || $user_can_via_settings ) {
                $caps = array();
            }
            
            break;
         case 'exactmetrics_save_settings' :
            $roles = exactmetrics_get_option( 'save_settings', array() );

            $user_can_via_settings = false;
            if ( ! empty( $roles ) && is_array( $roles ) ) {
                foreach ( $roles as $role ) {
                    if ( is_string( $role ) ) {
                        if ( user_can( $user_id, $role ) ) {
                            $user_can_via_settings = true;
                            break;
                        }
                    }
                }
            } else if ( ! empty( $roles ) && is_string( $roles ) ) {
                 if ( user_can( $user_id, $roles ) ) {
                    $user_can_via_settings = true;
                }
            }

            if ( user_can( $user_id, 'manage_options' ) || $user_can_via_settings ) {
                $caps = array();
            }

            break;
    }
    return $caps;
}
add_filter( 'map_meta_cap','exactmetrics_add_capabilities', 10, 4 );