<?php 

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

function pa_get_sysinfo() {
    global $wpdb;

    // Get theme info
    $theme_data = wp_get_theme();
    $theme = $theme_data->Name . ' ' . $theme_data->Version;

    $return = '### <strong>Begin System Info</strong> ###' . "\n\n";

    // Start with the basics...
    $return .= '-- Site Info' . "\n\n";
    $return .= 'Site URL:                 ' . site_url() . "\n";
    $return .= 'Home URL:                 ' . home_url() . "\n";
    $return .= 'Multisite:                ' . (is_multisite() ? 'Yes' : 'No') . "\n";

    // Theme info
    $plugin = get_plugin_data(PREMIUM_ADDONS_FILE);


    // Plugin configuration
    $return .= "\n" . '-- Plugin Configuration' . "\n\n";
    $return .= 'Name:                     ' . $plugin['Name'] . "\n";
    $return .= 'Version:                  ' . $plugin['Version'] . "\n";

    // WordPress configuration
    $return .= "\n" . '-- WordPress Configuration' . "\n\n";
    $return .= 'Version:                  ' . get_bloginfo('version') . "\n";
    $return .= 'Language:                 ' . (defined('WPLANG') && WPLANG ? WPLANG : 'en_US') . "\n";
    $return .= 'Permalink Structure:      ' . (get_option('permalink_structure') ? get_option('permalink_structure') : 'Default') . "\n";
    $return .= 'Active Theme:             ' . $theme . "\n";
    $return .= 'Show On Front:            ' . get_option('show_on_front') . "\n";

    // Only show page specs if frontpage is set to 'page'
    if (get_option('show_on_front') == 'page') {
        $front_page_id = get_option('page_on_front');
        $blog_page_id = get_option('page_for_posts');

        $return .= 'Page On Front:            ' . ($front_page_id != 0 ? get_the_title($front_page_id) . ' (#' . $front_page_id . ')' : 'Unset') . "\n";
        $return .= 'Page For Posts:           ' . ($blog_page_id != 0 ? get_the_title($blog_page_id) . ' (#' . $blog_page_id . ')' : 'Unset') . "\n";
    }

    $return .= 'ABSPATH:                  ' . ABSPATH . "\n";


    $return .= 'WP_DEBUG:                 ' . (defined('WP_DEBUG') ? WP_DEBUG ? 'Enabled' : 'Disabled' : 'Not set') . "\n";
    $return .= 'Memory Limit:             ' . WP_MEMORY_LIMIT . "\n";
    $return .= 'Registered Post Stati:    ' . implode(', ', get_post_stati()) . "\n";

    // Get plugins that have an update
    $updates = get_plugin_updates();

    // WordPress active plugins
    $return .= "\n" . '-- WordPress Active Plugins' . "\n\n";

    $plugins = get_plugins();
    $active_plugins = get_option('active_plugins', array());

    foreach ($plugins as $plugin_path => $plugin) {
        if (!in_array($plugin_path, $active_plugins))
            continue;

        $update = (array_key_exists($plugin_path, $updates)) ? ' (needs update - ' . $updates[$plugin_path]->update->new_version . ')' : '';
        $return .= $plugin['Name'] . ': ' . $plugin['Version'] . $update . "\n";
    }

    // WordPress inactive plugins
    $return .= "\n" . '-- WordPress Inactive Plugins' . "\n\n";

    foreach ($plugins as $plugin_path => $plugin) {
        if (in_array($plugin_path, $active_plugins))
            continue;

        $update = (array_key_exists($plugin_path, $updates)) ? ' (needs update - ' . $updates[$plugin_path]->update->new_version . ')' : '';
        $return .= $plugin['Name'] . ': ' . $plugin['Version'] . $update . "\n";
    }

    if (is_multisite()) {
        // WordPress Multisite active plugins
        $return .= "\n" . '-- Network Active Plugins' . "\n\n";

        $plugins = wp_get_active_network_plugins();
        $active_plugins = get_site_option('active_sitewide_plugins', array());

        foreach ($plugins as $plugin_path) {
            $plugin_base = plugin_basename($plugin_path);

            if (!array_key_exists($plugin_base, $active_plugins))
                continue;

            $update = (array_key_exists($plugin_path, $updates)) ? ' (needs update - ' . $updates[$plugin_path]->update->new_version . ')' : '';
            $plugin = get_plugin_data($plugin_path);
            $return .= $plugin['Name'] . ': ' . $plugin['Version'] . $update . "\n";
        }
    }

    // Server configuration (really just versioning)
    $return .= "\n" . '-- Webserver Configuration' . "\n\n";
    $return .= 'PHP Version:              ' . PHP_VERSION . "\n";
    $return .= 'MySQL Version:            ' . $wpdb->db_version() . "\n";
    $return .= 'Webserver Info:           ' . $_SERVER['SERVER_SOFTWARE'] . "\n";

    // PHP configs... now we're getting to the important stuff
    $return .= "\n" . '-- PHP Configuration' . "\n\n";
    $return .= 'Memory Limit:             ' . ini_get('memory_limit') . "\n";
    $return .= 'Upload Max Size:          ' . ini_get('upload_max_filesize') . "\n";
    $return .= 'Post Max Size:            ' . ini_get('post_max_size') . "\n";
    $return .= 'Upload Max Filesize:      ' . ini_get('upload_max_filesize') . "\n";
    $return .= 'Time Limit:               ' . ini_get('max_execution_time') . "\n";
    $return .= 'Max Input Vars:           ' . ini_get('max_input_vars') . "\n";
    $return .= 'Display Errors:           ' . (ini_get('display_errors') ? 'On (' . ini_get('display_errors') . ')' : 'N/A') . "\n";

    $return = apply_filters('edd_sysinfo_after_php_config', $return);

    // PHP extensions and such
    $return .= "\n" . '-- PHP Extensions' . "\n\n";
    $return .= 'cURL:                     ' . (function_exists('curl_init') ? 'Supported' : 'Not Supported') . "\n";
    $return .= 'fsockopen:                ' . (function_exists('fsockopen') ? 'Supported' : 'Not Supported') . "\n";
    $return .= 'SOAP Client:              ' . (class_exists('SoapClient') ? 'Installed' : 'Not Installed') . "\n";
    $return .= 'Suhosin:                  ' . (extension_loaded('suhosin') ? 'Installed' : 'Not Installed') . "\n";

    $return .= "\n" . '### End System Info ###';

    return $return;
}

