import { ParsedUrlQuery } from "querystring";
import * as plugins from "temp/extract-path-plugins";

export interface Plugin {
  /**
   * A function which will be called during path extraction
   */
  exec(path: string): string;
}

export class PathExtractor {
  /**
   * Extract normalized Sitecore item path
   * @param {ParsedUrlQuery} [params]
   */
  public extract(params: ParsedUrlQuery | undefined): string {
    if (params === undefined) {
      return "/";
    }
    let path = Array.isArray(params.path)
      ? params.path.join("/")
      : (params.path ?? "/");

    // Ensure leading '/'
    if (!path.startsWith("/")) {
      path = "/" + path;
    }

    const extractedPath = (Object.values(plugins) as Plugin[]).reduce(
      (resultPath, plugin) => plugin.exec(resultPath),
      path,
    );

    return extractedPath;
  }
}

export const pathExtractor = new PathExtractor();