"use strict";

var helper = require("./helpers/index.js");
var Message = helper.Message;
var assert = require("chai").assert;
var async = require("async");

describe("Message Model", function () {
	var user;

	before(function (done) {
		user = helper.createUser();
		helper.clearDb(done);
	});

	afterEach(function (done) {
		helper.clearDb(done);
	});

	describe(".create", function () {
		it ("creates a new message with an author", function (done) {
			var content = "Foo";
			Message.create({
				author: {
					username: user.username,
					avatar: user.avatar
				},
				content: content
			}, function (error, result) {
				if (error) return done(error);
				assert.equal(result.author.username, user.username);
				assert.equal(result.author.avatar, user.avatar);
				assert.equal(result.content, content);
				assert.isDefined(result.createdAt);
				done();
			});
		});
	});

	describe(".list", function () {
		before(function (done) {
			var instructions = [helper.clearDb.bind(null)];
			var create = function (content) {
				return function (callback) {
					Message.create({
						author: {
							username: user.username,
							avatar: user.avatar
						},
						content: content
					}, callback);
				}
			};
			for (var i = 0; i < 31; i++) {
				instructions.push(create(i));
			}
			async.series(instructions, done);
		});
		it ("lists last 30 messages with oldest first", function (done) {
			Message.list({}, function (error, messages) {
				if (error) return done(error);
				assert.equal(messages.length, 30);
				assert.isTrue(messages.reduce(function (acc, message, index, arr) {
					if (index === 0) return true;
					if (acc === false) return false;
					return arr[index - 1].createdAt < message.createdAt; 
				}));
				done();
			});
		});
	});
});