"use strict";

var utils = require("../utils");

module.exports = function(defaultFuncs, api, ctx) {
  return function searchForThread(name, callback) {
    if (!callback) {
      throw { error: "searchForThread: need callback" };
    }

    var tmpForm = {
      client: "web_messenger",
      query: name,
      offset: 0,
      limit: 21,
      index: "fbid"
    };

    defaultFuncs
      .post(
        "https://www.facebook.com/ajax/mercury/search_threads.php",
        ctx.jar,
        tmpForm
      )
      .then(utils.parseAndCheckLogin(ctx, defaultFuncs))
      .then(function(resData) {
        if (resData.error) {
          throw resData;
        }
        if (!resData.payload.mercury_payload.threads) {
          return callback({ error: "Could not find thread `" + name + "`." });
        }
        return callback(
          null,
          resData.payload.mercury_payload.threads.map(utils.formatThread)
        );
      });
  };
};