<?php

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

class WPF_WPEP extends WPEP_Content_Library_Integration {

    public $service_name   = 'WP Fusion';
    public $options_prefix = 'wpep_wpf_';

    /**
     * Gets things started
     *
     * @access  public
     * @return  void
     */

    public function __construct() {

        wp_fusion()->integrations->wpep = $this;

        $this->init();

        // Add meta field group
        add_filter( 'wpf_meta_field_groups', array( $this, 'add_meta_field_group' ), 10 );
        add_filter( 'wpf_meta_fields', array( $this, 'prepare_meta_fields' ), 20 );
        add_filter( 'wpf_watched_meta_fields', array( $this, 'watch_meta_fields' ) );

        add_filter( 'wpf_user_update', array( $this, 'user_update' ), 10, 2 );
        add_filter( 'wpf_user_register', array( $this, 'user_update' ), 10, 2 );

        // Apply tags on course completion
        add_action( 'wpep_user_set_course_data', array( $this, 'apply_tags_wpep_complete' ), 10, 7 );

        // Settings
        add_action( 'wpf_meta_box_content', array( $this, 'meta_box_content' ), 40, 2 );

    }


    /**
     * Adds field group for WPEP to contact fields list
     *
     * @access  public
     * @return  array Meta fields
     */

    public function add_meta_field_group( $field_groups ) {

        if ( ! isset( $field_groups['wpep'] ) ) {
            $field_groups['wpep'] = array(
                'title'  => 'eLearnCommerce',
                'fields' => array(),
            );
        }

        return $field_groups;

    }

    /**
     * Sets field labels and types for WPEP custom fields
     *
     * @access  public
     * @return  array Meta fields
     */

    public function prepare_meta_fields( $meta_fields ) {

        $meta_fields[ WPEP_USER_META_AUTO_LOGIN_TOKEN ] = array(
            'label' => 'Auto Login Token',
            'type'  => 'text',
            'group' => 'wpep',
        );

        return $meta_fields;

    }

    /**
     * Sets up token to automatically sync
     *
     * @access  public
     * @return  array Meta Fields
     */

    public function watch_meta_fields( $meta_fields ) {

        $meta_fields[] = WPEP_USER_META_AUTO_LOGIN_TOKEN;

        return $meta_fields;

    }

    /**
     * Generate autologin token on push if needed
     *
     * @access  public
     * @return  array Update Data
     */

    public function user_update( $update_data, $user_id ) {

        if ( empty( $update_data[ WPEP_USER_META_AUTO_LOGIN_TOKEN ] ) ) {

            $user_token = get_user_meta( $user_id, WPEP_USER_META_AUTO_LOGIN_TOKEN, true );

            if ( $user_token === '' ) {

                $salt       = wpep_get_setting( 'auto-login-link-salt' );
                $user_token = sha1( $salt . wpep_generate_random_token( 32 ) );
                update_user_meta( $user_id, WPEP_USER_META_AUTO_LOGIN_TOKEN, $user_token );

                $update_data[ WPEP_USER_META_AUTO_LOGIN_TOKEN ] = $user_token;

            } else {

                $update_data[ WPEP_USER_META_AUTO_LOGIN_TOKEN ] = $user_token;

            }
        }

        return $update_data;

    }


    /**
     * Determine whether or not a user has access to content
     *
     * @access public
     * @return bool
     */

    public function has_access( $post_id ) {

        if ( ! wp_fusion()->access->user_can_access( $post_id ) ) {
            return false;
        } else {
            return true;
        }

    }


    /**
     * Displays restricted item button text in course grid
     *
     * @access public
     * @return string Text
     */

    public function get_sell_text( $post_id = 0 ) {

        if ( ! $this->has_access( $post_id ) ) {

            $settings = get_post_meta( $post_id, 'wpf-settings', true );

            if ( ! empty( $settings['restricted_button_text'] ) ) {
                return $settings['restricted_button_text'];
            }
        }

        return $this->sell_button_text;

    }


    /**
     * Applies tags when a WPEP course is completed
     *
     * @access public
     * @return void
     */

    public function apply_tags_wpep_complete( $key, $progress, $course_id, $section_id, $lesson_id, $user_id, $updated ) {

        if ( $key == 'course_completed' && $progress == 1 ) {

            $wpf_settings = get_post_meta( $course_id, 'wpf-settings', true );

            if ( ! empty( $wpf_settings['apply_tags_wpep'] ) ) {
                wp_fusion()->user->apply_tags( $wpf_settings['apply_tags_wpep'], $user_id );
            }
        }

    }


    /**
     * Adds WPEP fields to WPF meta box
     *
     * @access public
     * @return void
     */

    public function meta_box_content( $post, $settings ) {

        if ( $post->post_type != WPEP_POST_TYPE_COURSE ) {
            return;
        }

        echo '<hr/>';

        echo '<strong style="margin-top: 5px; display: inline-block;">eLearnCommerce Course:</strong>';

        echo '<p><label for="wpf-apply-tags-wpep"><small>Apply these tags when marked complete:</small></label>';

        wpf_render_tag_multiselect(
            array(
                'setting'   => $settings['apply_tags_wpep'],
                'meta_name' => 'wpf-settings',
                'field_id'  => 'apply_tags_wpep',
            )
        );

        echo '</p>';

        echo '<p><label for="wpf-restricted-course-message"><small>Button text to display when course is restricted:</small></label>';

        if ( ! isset( $settings['restricted_button_text'] ) ) {
            $settings['restricted_button_text'] = '';
        }

        echo '<input type="text" id="wpf-restricted-course-message" placeholder="' . $this->sell_button_text . '" name="wpf-settings[restricted_button_text]" value="' . $settings['restricted_button_text'] . '">';

        echo '</p>';

    }

}

new WPF_WPEP();