const assert = require('assert');
const EventEmitter = require('events');
const IRCServer = require("../src/server.js");

describe("JOIN OK", function () {
    it("should handle a JOIN command -> JOIN #testchan", function (done) {
        const server = IRCServer.create()
        let mockedSock = new EventEmitter()
        mockedSock.address = function () {
            return {port: 12346, family: 'IPv4', address: '127.0.0.1'}
        }
        mockedSock.write = function (data) {
            let answer = data.toString("ascii")
            if (answer.indexOf("JOIN") >= 0) {
                assert.equal(answer, ":some_nick JOIN #testchan\r\n")
                done()
            }
        }
        mockedSock.destroy = function () {
            done("Destroyed socket without answering")
        }

        server.emit("connection", mockedSock)
        mockedSock.emit('data', Buffer.from("NICK some_nick\r\n", "ascii"))
        mockedSock.emit('data', Buffer.from("USER guest tolmoon tolsun :Ronnie Reagan\r\n", "ascii"))
        mockedSock.emit('data', Buffer.from("JOIN #testchan\r\n", "ascii"))
    })
    it("try to join/create channel with invalid channel name (no #)", function (done) {
        const server = IRCServer.create()
        let mockedSock = new EventEmitter()
        mockedSock.address = function () {
            return {port: 12346, family: 'IPv4', address: '127.0.0.1'}
        }
        mockedSock.write = function (data) {
            let answer = data.toString("ascii")
            if (answer.indexOf("404") >= 0) {
                assert.equal(answer, ":irc.example.com 404: invalid channel name")
                done()
            }

        }
        mockedSock.destroy = function () {
            done("Destroyed socket without answering")
        }

        server.emit("connection", mockedSock)
        mockedSock.emit('data', Buffer.from("NICK some_nick\r\n", "ascii"))
        mockedSock.emit('data', Buffer.from("USER guest tolmoon tolsun :Ronnie Reagan\r\n", "ascii"))
        mockedSock.emit('data', Buffer.from("JOIN testchan\r\n", "ascii"))
    })

    it("should handle a JOIN command for more than one user -> JOIN #testchan and send join events to all channel members", function (done) {
        const server = IRCServer.create()
        // helper to count join messages for channel
        // we should see 2 of them
        let counter = 0
        let mockedSock1 = new EventEmitter()
        mockedSock1.address = function () {
            return {port: 12346, family: 'IPv4', address: '127.0.0.1'}
        }
        mockedSock1.write = function (data) {
            let answer = data.toString("ascii")
            if (answer.indexOf("JOIN") >= 0 && counter === 1) {
                assert.equal(answer, ":other_nick JOIN #testchan\r\n")
                done()
            }
            if (answer === ":some_nick JOIN #testchan\r\n") {
              counter++
            }
        }
        mockedSock1.destroy = function () {
            done("Destroyed socket without answering")
        }

        let mockedSock2 = new EventEmitter()
        mockedSock2.address = function () {
            return {port: 12346, family: 'IPv4', address: '127.0.0.1'}
        }
        mockedSock2.write = function (data) {
            return
        }
        mockedSock2.destroy = function () {
            done("Destroyed socket without answering")
        }

        server.emit("connection", mockedSock1)
        server.emit("connection", mockedSock2)
        mockedSock1.emit('data', Buffer.from("NICK some_nick\r\n", "ascii"))
        mockedSock1.emit('data', Buffer.from("USER guest tolmoon tolsun :Ronnie Reagan\r\n", "ascii"))
        mockedSock1.emit('data', Buffer.from("JOIN #testchan\r\n", "ascii"))
        mockedSock2.emit('data', Buffer.from("NICK other_nick\r\n", "ascii"))
        mockedSock2.emit('data', Buffer.from("USER guest tolmoon tolsun :Ronnie Reagan\r\n", "ascii"))
        mockedSock2.emit('data', Buffer.from("JOIN #testchan\r\n", "ascii"))
    })
})