<?php

class WPSite {
    public function __construct() {
        $wp_upload_path_and_url = wp_upload_dir();
        $this->uploads_url = $wp_upload_path_and_url[ 'baseurl' ];
        $this->site_url = get_home_url() . '/';
        $this->parent_theme_url = get_template_directory_uri();
        $this->wp_content_url = content_url();
        $this->site_path = ABSPATH;
        $this->plugins_path = $this->getWPDirFullPath( 'plugins' );
        $this->wp_uploads_path = $this->getWPDirFullPath( 'uploads' );
        $this->wp_includes_path = $this->getWPDirFullPath( 'wp-includes' );
        $this->wp_content_path = $this->getWPDirFullPath( 'wp-content' );
        $this->theme_root_path = $this->getWPDirFullPath( 'theme-root' );
        $this->parent_theme_path = $this->getWPDirFullPath( 'parent-theme' );
        $this->child_theme_path = $this->getWPDirFullPath( 'child-theme' );
        $this->child_theme_active = $this->parent_theme_path !== $this->child_theme_path;
        $this->permalink_structure = get_option( 'permalink_structure' );
        $this->wp_inc = '/' . WPINC;
        $this->wp_content = WP_CONTENT_DIR;
        $this->wp_uploads = str_replace( ABSPATH, '/', $this->wp_uploads_path );
        $this->wp_plugins = str_replace( ABSPATH, '/', WP_PLUGIN_DIR );
        $this->wp_themes = str_replace( ABSPATH, '/', get_theme_root() );
        $this->wp_active_theme = str_replace( home_url(), '', get_template_directory_uri() );
        $this->detect_base_url();
        $this->subdirectory = $this->isSiteInstalledInSubDirectory();
        $this->wp_site_subdir = $this->subdirectory;
        $this->wp_site_url = $this->site_url;
        $this->wp_site_path = $this->site_path;
        $this->wp_uploads_url = $this->uploads_url;
        $this->uploads_writable = $this->uploadsPathIsWritable();
        $this->permalinks_set = $this->permalinksAreDefined();
        $this->curl_enabled = $this->hasCurlSupport();
    }

    public function isSiteInstalledInSubDirectory() {
        $parsed_site_url = parse_url( rtrim( $this->site_url, '/' ) );
        if ( isset( $parsed_site_url[ 'path' ] ) ) {
            return $parsed_site_url[ 'path' ];
        }
        return false;
    }

    public function uploadsPathIsWritable() {
        return $this->wp_uploads_path && is_writable( $this->wp_uploads_path );
    }

    public function hasCurlSupport() {
        return extension_loaded( 'curl' );
    }

    public function permalinksAreDefined() {
        return strlen( get_option( 'permalink_structure' ) );
    }

    public function detect_base_url() {
        $site_url = get_option( 'siteurl' );
        $home = get_option( 'home' );
    }

    public function getWPDirFullPath( $wp_dir ) {
        $full_path = '';
        switch ( $wp_dir ) {
            case 'wp-content': $full_path = WP_CONTENT_DIR;
            break;
            case 'uploads': $upload_dir_info = wp_upload_dir();
            $full_path = $upload_dir_info[ 'basedir' ];
            break;
            case 'wp-includes': $full_path = ABSPATH . WPINC;
            break;
            case 'plugins': $full_path = WP_PLUGIN_DIR;
            break;
            case 'theme-root': $full_path = get_theme_root();
            break;
            case 'parent-theme': $full_path = get_template_directory();
            break;
            case 'child-theme': $full_path = get_stylesheet_directory();
            break;
        }
        return rtrim( $full_path, '/' );
    }

    public function getWPDirNameOnly( $wp_dir ) {
        $wp_dir_name = '';
        switch ( $wp_dir ) {
            case 'child-theme': case 'parent-theme': case 'wp-content': case 'wp-includes': case 'uploads': case 'theme-root': case 'plugins': $wp_dir_name = $this->getLastPathSegment( $this->getWPDirFullPath( $wp_dir ) );
            break;
        }
        return rtrim( $wp_dir_name, '/' );
    }

    public function getLastPathSegment( $path ) {
        $path_segments = explode( '/', $path );
        return end( $path_segments );
    }

    public function getWPContentSubDirectory() {
        $parsed_url = parse_url( $this->parent_theme_url );
        $path_segments = explode( '/', $parsed_url[ 'path' ] );
        if ( count( $path_segments ) === 5 ) {
            return $path_segments[ 1 ] . '/';
        } else {
            return '';
        }
    }
}