<?php
/**
 * Blogbuster main admin class
 *
 * @package Blogbuster
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class Blogbuster_Admin_Main
 */
class Blogbuster_Admin_Main {

    /**
     * Install Demo Importer Plugins Ajax Method
     */
    function blogbuster_install_demo_importer_plugin() {

        if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'blogbuster_plugin_install_nonce' ) ) {
            die( 'This action was stopped for security purposes.' );
        }

        if ( ! current_user_can( 'install_plugins' ) ) {
            $status['message'] = __( 'Sorry, you are not allowed to install plugins on this site.', 'blogbuster' );
            wp_send_json_error( $status );
        }

        include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
        

        $api = $this->blogbuster_plugin_api_status( 'mysterythemes-demo-importer' );

        if ( is_wp_error( $api ) ) {
            $status['message'] = $api->get_error_message();
            wp_send_json_error( $status );
        }

        $status['pluginName']   = $api->name;
        $skin                   = new WP_Ajax_Upgrader_Skin();
        $upgrader               = new Plugin_Upgrader( $skin );
        $result                 = $upgrader->install( $api->download_link );

        if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
            $status['debug'] = $skin->get_upgrade_messages();
        }

        if ( is_wp_error( $result ) ) {
            $status['errorCode']    = $result->get_error_code();
            $status['message']      = $result->get_error_message();
            wp_send_json_error( $status );
        } elseif ( is_wp_error( $skin->result ) ) {
            $status['errorCode']    = $skin->result->get_error_code();
            $status['message']      = $skin->result->get_error_message();
            wp_send_json_error( $status );
        } elseif ( $skin->get_errors()->get_error_code() ) {
            $status['message']      = $skin->get_error_messages();
            wp_send_json_error( $status );
        } elseif ( is_null( $result ) ) {
            global $wp_filesystem;

            $status['errorCode']    = 'unable_to_connect_to_filesystem';
            $status['message']      = __( 'Unable to connect to the filesystem. Please confirm your credentials.', 'blogbuster' );

            // Pass through the error from WP_Filesystem if one was raised.
            if ( $wp_filesystem instanceof WP_Filesystem_Base && is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->get_error_code() ) {
                $status['message'] = esc_html( $wp_filesystem->errors->get_error_message() );
            }

            wp_send_json_error( $status );
        }

        if ( current_user_can( 'activate_plugin' ) ) {
            $result = activate_plugin( '/mysterythemes-demo-importer/mysterythemes-demo-importer.php' );
            if ( is_wp_error( $result ) ) {
                $status['errorCode']    = $result->get_error_code();
                $status['message']      = $result->get_error_message();
                wp_send_json_error( $status );
            }
        }
        $status['message'] = esc_html__( 'Plugin installed successfully', 'blogbuster' );
        wp_send_json_success( $status );
    }

    /**
     * Activate Demo Importer Plugins Ajax Method
     */
    public function blogbuster_activate_demo_importer_plugin() {
        if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'blogbuster_plugin_install_nonce' ) ) {
            die( 'This action was stopped for security purposes.' );
        }

        $result = activate_plugin( '/mysterythemes-demo-importer/mysterythemes-demo-importer.php' );
        if ( is_wp_error( $result ) ) {
            // Process Error
            wp_send_json_error(
                array(
                    'success' => false,
                    'message' => $result->get_error_message(),
                )
            );
        } else {
            wp_send_json_success(
                array(
                    'success' => true,
                    'message' => __( 'Plugin Successfully Activated.', 'blogbuster' ),
                )
            );
        }
    }

    /**
     * Install required free plugin via ajax method
     */
    function blogbuster_install_free_plugin() {

        if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'blogbuster_plugin_install_nonce' ) ) {
            die( 'This action was stopped for security purposes.' );
        }

        if ( ! current_user_can( 'install_plugins' ) ) {
            $status['message'] = __( 'Sorry, you are not allowed to install plugins on this site.', 'blogbuster' );
            wp_send_json_error( $status );
        }

        include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

        $req_slug = $_POST['plugin'];
        
        $api = $this->blogbuster_plugin_api_status( $req_slug );

        if ( is_wp_error( $api ) ) {
            $status['message'] = $api->get_error_message();
            wp_send_json_error( $status );
        }

        $status['pluginName']   = $api->name;
        $skin                   = new WP_Ajax_Upgrader_Skin();
        $upgrader               = new Plugin_Upgrader( $skin );
        $result                 = $upgrader->install( $api->download_link );

        if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
            $status['debug'] = $skin->get_upgrade_messages();
        }

        if ( is_wp_error( $result ) ) {
            $status['errorCode']    = $result->get_error_code();
            $status['message']      = $result->get_error_message();
            wp_send_json_error( $status );
        } elseif ( is_wp_error( $skin->result ) ) {
            $status['errorCode']    = $skin->result->get_error_code();
            $status['message']      = $skin->result->get_error_message();
            wp_send_json_error( $status );
        } elseif ( $skin->get_errors()->get_error_code() ) {
            $status['message']      = $skin->get_error_messages();
            wp_send_json_error( $status );
        } elseif ( is_null( $result ) ) {
            global $wp_filesystem;

            $status['errorCode']    = 'unable_to_connect_to_filesystem';
            $status['message']      = __( 'Unable to connect to the filesystem. Please confirm your credentials.', 'blogbuster' );

            // Pass through the error from WP_Filesystem if one was raised.
            if ( $wp_filesystem instanceof WP_Filesystem_Base && is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->get_error_code() ) {
                $status['message'] = esc_html( $wp_filesystem->errors->get_error_message() );
            }

            wp_send_json_error( $status );
        }

        if ( current_user_can( 'activate_plugin' ) ) {
            $req_plugin = '/'. $req_slug .'/'. $req_slug .'.php';
            $result = activate_plugin( $req_plugin );
            if ( is_wp_error( $result ) ) {
                $status['errorCode']    = $result->get_error_code();
                $status['message']      = $result->get_error_message();
                wp_send_json_error( $status );
            }
        }
        $status['message'] = esc_html__( 'Plugin installed successfully', 'blogbuster' );
        wp_send_json_success( $status );
    }

    /**
     * Activate required free plugins via ajax method
     */
    public function blogbuster_activate_free_plugin() {
        if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'blogbuster_plugin_install_nonce' ) ) {
            die( 'This action was stopped for security purposes.' );
        }

        $req_slug = $_POST['plugin'];

        $req_plugin = '/'. $req_slug .'/'. $req_slug .'.php';

        $result = activate_plugin( $req_plugin );
        if ( is_wp_error( $result ) ) {
            // Process Error
            wp_send_json_error(
                array(
                    'success' => false,
                    'message' => $result->get_error_message(),
                )
            );
        } else {
            wp_send_json_success(
                array(
                    'success' => true,
                    'message' => __( 'Plugin Successfully Activated.', 'blogbuster' ),
                )
            );
        }
    }

    /**
     * Complete info about lists of free plugins
     */
    public function blogbuster_free_plugins_lists() {
        $free_plugins = array(
            'wp-blog-post-layouts' => array(
                'slug'      => 'wp-blog-post-layouts',
                'filename'  => 'wp-blog-post-layouts.php'
            ),
            'wp-magazine-modules-lite' => array(
                'slug'      => 'wp-magazine-modules-lite',
                'filename'  => 'wp-magazine-modules-lite.php'
            ),
            'maintenance-notice' => array(
                'slug'      => 'maintenance-notice',
                'filename'  => 'maintenance-notice.php'
            )
        );

        $plugin_info = array();

        foreach( $free_plugins as $plugin ) {

            $api_status     = $this->blogbuster_plugin_api_status( $plugin['slug'] );
            if ( ! is_wp_error( $api_status ) ) {
                $action_status  = $this->blogbuster_check_plugin_status( $plugin );
                $icon_url       = $this->blogbuster_get_plugin_icon_url( $api_status->icons );
                $button_url     = $this->blogbuster_generate_plugin_action_url( $action_status, $plugin );

                $plugins_info[] = array(
                    'name'          => $api_status->name,
                    'slug'          => $plugin['slug'],
                    'description'   => $api_status->short_description,
                    'version'       => $api_status->version,
                    'author'        => $api_status->author,
                    'action'        => $action_status,
                    'icon_url'      => $icon_url,
                    'button_url'    => $button_url
                );
            }
        }

        return $plugins_info;

    }

    /**
     * get icon for requested plugin
     */
    public function blogbuster_get_plugin_icon_url( $arr ) {

        $plugin_icon_url = '';
        if ( ! empty( $arr['svg'] ) ) {
            $plugin_icon_url = $arr['svg'];
        } elseif ( ! empty( $arr['2x'] ) ) {
            $plugin_icon_url = $arr['2x'];
        } elseif ( ! empty( $arr['1x'] ) ) {
            $plugin_icon_url = $arr['1x'];
        } else {
            $plugin_icon_url = $arr['default'];
        }

        return $plugin_icon_url;
    }

    /**
     * Get requested plugin API
     */
    public function blogbuster_plugin_api_status( $plugin ) {
        include_once ABSPATH . 'wp-admin/includes/plugin-install.php';

        $plugin_info_api = plugins_api( 'plugin_information', array(
            'slug'   => $plugin,
            'fields' => array(
                'sections'          => false,
                'icons'             => true,
                'short_description' => true,
                'banners'           => false,
                'requires'          => false,
                'requires_php'      => false,
                'rating'            => false,
                'ratings'           => false,
                'support_threads'   => false,
                'support_threads_resolved'  => false,
                'tags'              => false,
                'tested'            => false,
                'contributors'      => false,
                'num_ratings'       => false,
                'screenshots'       => false,
                'versions'          => false,
                'donate_link'       => false,
            )
        ) );

        return $plugin_info_api;
    }

    /**
     * Check if Plugin is active or not
     */
    public function blogbuster_check_plugin_status( $plugin ) {
        include_once( ABSPATH . 'wp-admin/includes/plugin.php' ); 
        $folder_name    = $plugin['slug'];
        $file_name      = $plugin['filename'];
        $status         = 'install';
        $path           = WP_PLUGIN_DIR.'/'.esc_attr( $folder_name ).'/'.esc_attr( $file_name );

        if ( file_exists( $path ) ) {
            $status = is_plugin_active( esc_attr( $folder_name ).'/'.esc_attr( $file_name ) ) ? 'inactive' : 'active';
        }

        return $status;
    }

    /**
     * Get plugin path based on plugin slug.
     *
     * @param string $slug - plugin slug.
     *
     * @return string
     */
    public function blogbuster_get_plugin_path( $slug ) {
        switch ( $slug ) {
            case 'wp-blog-post-layouts':
                return $slug . '/wp-blog-post-layouts.php';
            case 'wp-magazine-modules-lite':
                return $slug . '/wp-magazine-modules-lite.php';
            default:
                return $slug . '/' . $slug . '.php';
        }
    }

    /**
     * Generate Url for the Plugin Button
     */
    public function blogbuster_generate_plugin_action_url( $status, $plugin ) {

        $plugin_slug    = $plugin['slug'];

        switch ( $status ) {
            case 'install':
                return wp_nonce_url(
                    add_query_arg(
                        array(
                            'action' => 'install-plugin',
                            'plugin' => $plugin_slug,
                        ),
                        esc_url( network_admin_url( 'update.php' ) )
                    ),
                    'install-plugin_' . $plugin_slug
                );
                break;

            case 'inactive':
                return add_query_arg(
                    array(
                        'action'        => 'deactivate',
                        'plugin'        => rawurlencode( $this->blogbuster_get_plugin_path( $plugin_slug ) ),
                        'plugin_status' => 'all',
                        'paged'         => '1',
                        '_wpnonce'      => wp_create_nonce( 'deactivate-plugin_' . $this->blogbuster_get_plugin_path( $plugin_slug ) ),
                    ),
                    esc_url( network_admin_url( 'plugins.php' ) )
                );
                break;

            case 'active':
                return add_query_arg(
                    array(
                        'action'        => 'activate',
                        'plugin'        => rawurlencode( $this->blogbuster_get_plugin_path( $plugin_slug ) ),
                        'plugin_status' => 'all',
                        'paged'         => '1',
                        '_wpnonce'      => wp_create_nonce( 'activate-plugin_' . $this->blogbuster_get_plugin_path( $plugin_slug ) ),
                    ),
                    esc_url( network_admin_url( 'plugins.php' ) )
                );
                break;
        }
    }

    /**
     * Get the parsed changelog.
     *
     * @param string $changelog_path the changelog path.
     *
     * @return array
     */
    public function get_changelog( $changelog_path ) {

        if ( ! is_file( $changelog_path ) ) {
            return [];
        }

        if ( ! WP_Filesystem() ) {
            return [];
        }

        return $this->parse_changelog( $changelog_path );
    }

    /**
     * Return the releases changes array.
     *
     * @param string $changelog_path the changelog path.
     *
     * @return array $releases - changelog.
     */
    private function parse_changelog( $changelog_path ) {
        WP_Filesystem();
        global $wp_filesystem;
        $changelog = $wp_filesystem->get_contents( $changelog_path );
        if ( is_wp_error( $changelog ) ) {
            $changelog = '';
        }
        $changelog     = explode( PHP_EOL, $changelog );
        $releases      = [];
        $release_count = 0;

        foreach ( $changelog as $changelog_line ) {
            
            if ( empty( $changelog_line ) ) {
                continue;
            }

            if ( substr( ltrim( $changelog_line ), 0, 2 ) === '==' ) {
                $release_count ++;
                preg_match( '/[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/', $changelog_line, $found_v );
                preg_match( '/[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}/', $changelog_line, $found_d );
                $releases[ $release_count ] = array(
                    'version' => $found_v[0],
                    'date'    => $found_d[0],
                );

                continue;

            }

            if ( preg_match( '/[*|-]?\s?(\NEW|\New|new)[:]?\s?(\b|(?=\[))/', $changelog_line ) ) {
                $changelog_line = preg_replace( '/[*|-]?\s?(\NEW|\New|new)[:]?\s?(\b|(?=\[))/', '', $changelog_line );
                $releases[ $release_count ]['new'][] = $this->blogbuster_parse_md_and_clean( $changelog_line );
                continue;
            }

            if ( preg_match( '/[*|-]?\s?(IMP|Imp|imp)[:]?\s?(\b|(?=\[))/', $changelog_line ) ) {
                $changelog_line = preg_replace( '/[*|-]?\s?(IMP|Imp|imp)[:]?\s?(\b|(?=\[))/', '', $changelog_line );
                $releases[ $release_count ]['imp'][] = $this->blogbuster_parse_md_and_clean( $changelog_line );
                continue;
            }

            if ( preg_match( '/[*|-]?\s?(FIX|Fix|fix)[:]?\s?(\b|(?=\[))/', $changelog_line ) ) {
                $changelog_line = preg_replace( '/[*|-]?\s?(FIX|Fix|fix)[:]?\s?(\b|(?=\[))/', '', $changelog_line );
                $releases[ $release_count ]['fix'][] = $this->blogbuster_parse_md_and_clean( $changelog_line );
                continue;
            }

            $changelog_line = $this->blogbuster_parse_md_and_clean( $changelog_line );

            if ( empty( $changelog_line ) ) {
                continue;
            }

            $releases[ $release_count ]['tweak'][] = $changelog_line;
        }

        return array_values( $releases );
    }

    /**
     * Parse markdown links and cleanup string.
     *
     * @param string $string changelog line.
     *
     * @return string
     */
    private function blogbuster_parse_md_and_clean( $string ) {

        // Drop spaces, starting lines | asterisks.
        $string = trim( $string );
        $string = ltrim( $string, '*' );
        $string = ltrim( $string, '-' );

        // Replace markdown links with <a> tags.
        $string = preg_replace_callback(
            '/\[(.*?)]\((.*?)\)/',
            function ( $matches ) {
                return '<a href="' . $matches[2] . '" target="_blank" rel="noopener"><i class="dashicons dashicons-external"></i>' . $matches[1] . '</a>';
            },
            htmlspecialchars( $string )
        );

        return $string;
    }

    /**
     * Popup alert for mysterythemes demo importer plugin install.
     *
     * @since 1.0.0
     */
    public function blogbuster_install_demo_import_plugin_popup() {
        $demo_importer_plugin = WP_PLUGIN_DIR . '/mysterythemes-demo-importer/mysterythemes-demo-importer.php';
    ?>
            <div id="mt-demo-import-plugin-popup">
                <div class="mt-popup-inner-wrap">
                    <?php
                        if ( is_plugin_active( 'mysterythemes-demo-importer/mysterythemes-demo-importer.php' ) ) {
                            echo '<span class="mt-plugin-message">'.esc_html__( 'You can import available demos now!', 'blogbuster' ).'</span>';
                        } else {
                            if ( ! file_exists( $demo_importer_plugin ) ) {
                    ?>
                                <span class="mt-plugin-message"><?php esc_html_e( 'Demo Importer Plugin is not installed!', 'blogbuster' ); ?></span>
                                <a href="javascript:void(0)" class="mt-install-demo-import-plugin" data-process="<?php esc_attr_e( 'Installing & Activating', 'blogbuster' ); ?>" data-done="<?php esc_attr_e( 'Installed & Activated', 'blogbuster' ); ?>" data-redirect="<?php echo esc_url( wp_nonce_url( add_query_arg( 'blogbuster-hide-welcome-notice', 'welcome', admin_url( 'themes.php' ).'?page=blogbuster-dashboard&tab=starter' ) , 'blogbuster_hide_welcome_notices_nonce', '_blogbuster_welcome_notice_nonce' ) ); ?>">
                                    <?php esc_html_e( 'Install and Activate', 'blogbuster' ); ?>
                                </a>
                    <?php
                            } else {
                    ?>
                                <span class="mt-plugin-message"><?php esc_html_e( 'Demo Importer Plugin is installed but not activated!', 'blogbuster' ); ?></span>
                                <a href="javascript:void(0)" class="mt-activate-demo-import-plugin" data-process="<?php esc_attr_e( 'Activating', 'blogbuster' ); ?>" data-done="<?php esc_attr_e( 'Activated', 'blogbuster' ); ?>" data-redirect="<?php echo esc_url( wp_nonce_url( add_query_arg( 'blogbuster-hide-welcome-notice', 'welcome', admin_url( 'themes.php' ).'?page=blogbuster-dashboard&tab=starter' ) , 'blogbuster_hide_welcome_notices_nonce', '_blogbuster_welcome_notice_nonce' ) ); ?>">
                                    <?php esc_html_e( 'Activate Now', 'blogbuster' ); ?>
                                </a>
                    <?php
                            }
                        }
                    ?>
                </div><!-- .mt-popup-inner-wrap -->
            </div><!-- .mt-demo-import-plugin-popup -->
        <?php
    }

}

$admin_main_class = new Blogbuster_Admin_Main();