includes/login/src/getFriendsList.js

"use strict";

const utils = require("../utils");
const log = require("npmlog");

// [almost] copy pasted from one of FB's minified file (GenderConst)
const GENDERS = {
	0: "unknown",
	1: "female_singular",
	2: "male_singular",
	3: "female_singular_guess",
	4: "male_singular_guess",
	5: "mixed",
	6: "neuter_singular",
	7: "unknown_singular",
	8: "female_plural",
	9: "male_plural",
	10: "neuter_plural",
	11: "unknown_plural"
};

function formatData(obj) {
	return Object.keys(obj).map(function (key) {
		const user = obj[key];
		return {
			alternateName: user.alternateName,
			firstName: user.firstName,
			gender: GENDERS[user.gender],
			userID: utils.formatID(user.id.toString()),
			isFriend: user.is_friend != null && user.is_friend ? true : false,
			fullName: user.name,
			profilePicture: user.thumbSrc,
			type: user.type,
			profileUrl: user.uri,
			vanity: user.vanity,
			isBirthday: !!user.is_birthday
		};
	});
}

module.exports = function (defaultFuncs, api, ctx) {
	return function getFriendsList(callback) {
		let resolveFunc = function () { };
		let rejectFunc = function () { };
		const returnPromise = new Promise(function (resolve, reject) {
			resolveFunc = resolve;
			rejectFunc = reject;
		});

		if (!callback) {
			callback = function (err, friendList) {
				if (err) {
					return rejectFunc(err);
				}
				resolveFunc(friendList);
			};
		}

		defaultFuncs
			.postFormData(
				"https://www.facebook.com/chat/user_info_all",
				ctx.jar,
				{},
				{ viewer: ctx.i_userID || ctx.userID }
			)
			.then(utils.parseAndCheckLogin(ctx, defaultFuncs))
			.then(function (resData) {
				if (!resData) {
					throw { error: "getFriendsList returned empty object." };
				}
				if (resData.error) {
					throw resData;
				}
				callback(null, formatData(resData.payload));
			})
			.catch(function (err) {
				log.error("getFriendsList", err);
				return callback(err);
			});

		return returnPromise;
	};
};