/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;

/**
 * Dynamically create a search engine offering search suggestions via searchSuggestions.sjs.
 *
 * The engine is constructed by passing a JSON object with engine datails as the query string.
 */

function handleRequest(request, response) {
  let engineData = JSON.parse(unescape(request.queryString).replace("+", " "));

  if (!engineData.baseURL) {
    response.setStatusLine(request.httpVersion, 500, "baseURL required");
    return;
  }

  engineData.name = engineData.name || "Generated test engine";
  engineData.description = engineData.description || "Generated test engine description";
  engineData.method = engineData.method || "GET";

  response.setStatusLine(request.httpVersion, 200, "OK");
  createOpenSearchEngine(response, engineData);
}

/**
 * Create an OpenSearch engine for the given base URL.
 */
function createOpenSearchEngine(response, engineData) {
  let params = "", queryString = "";
  if (engineData.method == "POST") {
    params = "<Param name='q' value='{searchTerms}'/>";
  } else {
    queryString = "?q={searchTerms}";
  }

  let result = "<?xml version='1.0' encoding='utf-8'?>\
<OpenSearchDescription xmlns='http://a9.com/-/spec/opensearch/1.1/'>\
  <ShortName>" + engineData.name + "</ShortName>\
  <Description>" + engineData.description + "</Description>\
  <InputEncoding>UTF-8</InputEncoding>\
  <LongName>" + engineData.name + "</LongName>\
  <Url type='application/x-suggestions+json' method='" + engineData.method + "'\
       template='" + engineData.baseURL + "searchSuggestions.sjs" + queryString + "'>\
    " + params + "\
  </Url>\
  <Url type='text/html' method='" + engineData.method + "'\
       template='" + engineData.baseURL + queryString + "'/>\
</OpenSearchDescription>\
";
  response.write(result);
}