/**
 * @description
 * HTTP code snippet generator for native Node.js.
 *
 * @author
 * @AhmadNassri
 *
 * for any questions or issues regarding the generated code snippet, please open an issue mentioning the author.
 */

'use strict';

var util = require('util');
var CodeBuilder = require('../../helpers/code-builder');

module.exports = function(source, options) {
  var opts = util._extend(
    {
      indent: '  ',
    },
    options,
  );

  var code = new CodeBuilder(opts.indent);

  var reqOpts = {
    method: source.method,
    hostname: source.uriObj.hostname,
    port: source.uriObj.port,
    path: source.uriObj.path,
    headers: source.allHeaders,
  };

  code.push('var http = require("%s");', source.uriObj.protocol.replace(':', ''));

  code
    .blank()
    .push('var options = %s;', JSON.stringify(reqOpts, null, opts.indent))
    .blank()
    .push('var req = http.request(options, function (res) {')
    .push(1, 'var chunks = [];')
    .blank()
    .push(1, 'res.on("data", function (chunk) {')
    .push(2, 'chunks.push(chunk);')
    .push(1, '});')
    .blank()
    .push(1, 'res.on("end", function () {')
    .push(2, 'var body = Buffer.concat(chunks);')
    .push(2, 'console.log(body.toString());')
    .push(1, '});')
    .push('});')
    .blank();

  switch (source.postData.mimeType) {
    case 'application/x-www-form-urlencoded':
      if (source.postData.paramsObj) {
        code.unshift('var qs = require("querystring");');
        code.push(
          'req.write(qs.stringify(%s));',
          util.inspect(source.postData.paramsObj, {
            depth: null,
          }),
        );
      }
      break;

    case 'application/json':
      if (source.postData.jsonObj) {
        code.push(
          'req.write(JSON.stringify(%s));',
          util.inspect(source.postData.jsonObj, {
            depth: null,
          }),
        );
      }
      break;

    default:
      if (source.postData.text) {
        code.push('req.write(%s);', JSON.stringify(source.postData.text, null, opts.indent));
      }
  }

  code.push('req.end();');

  return code.join();
};

module.exports.info = {
  key: 'native',
  title: 'HTTP',
  link: 'http://nodejs.org/api/http.html#http_http_request_options_callback',
  description: 'Node.js native HTTP interface',
};