const path = require('path');
var Nightmare = require("nightmare");
var Promise = require("bluebird");
var fs = Promise.promisifyAll(require("fs"));
var _ = require("underscore");

var conf = JSON.parse(fs.readFileSync(path.join(__dirname,"conf.json"), 'utf8'));
var nightmare_conf = {
    show: false, openDevTools: true, webPreferences: {
        partition: 'nopersist'
    },
    typeInterval: 1
};
var password = conf.password;
var username = conf.username;
var baseURL = conf.url;



function readFilePromise(file) {

    return new Promise((f, r) => {

        fs.readFile(file, "utf-8", function (err, data) {
            if (err) {
                console.log("Error reading file");
                r(err);
                return;
            }
            f(data);
        });

    });

}



var names = ["code.html", "style.scss", "client.js", "server.js"];

var nightmare = new Nightmare(nightmare_conf);

var id = conf.pages.filter((p)=>p.name==process.argv[2])[0]["id"];

console.log("username = " + username + " password = " + password + " id = " + id);

nightmare.goto(baseURL + id)
            .wait("#username")
            .type("input#username", username)
            .type("input#password", password)
            .click("button.btn-block")
            .wait("input[ng-model='section.display']")
            .evaluate(function () {
                $("input.ng-empty[ng-model='section.display']").click()
            })
            .evaluate(function () {
                var editors = $("div.CodeMirror");
                return [
                    $(editors[0]).prop("CodeMirror").getValue(),
                    $(editors[1]).prop("CodeMirror").getValue(),
                    $(editors[2]).prop("CodeMirror").getValue(),
                    $(editors[3]).prop("CodeMirror").getValue()
                ];
            })
            .then((srcs) => {
                console.log("Loading Content for the first time");
                var data = _.zip.apply(null, [names, srcs]);
                return Promise.all(data.map((data) => {
                    return fs.writeFile("./" + data[0], data[1])
                }));
            })
            .then(() => {
                console.log("watching");
                watcher = fs.watch(process.cwd(), (action, filename) => {

                    if (!_.contains(names, filename)) return;

                    console.log("action = " + action + " filename = " + filename);

                    if(action != 'change'){
                        console.log("Ignoring action");
                        return;
                    }

                    Promise.all(names.map((n) => readFilePromise(path.join(process.cwd(),n))))
                        .then((contents) => {
                            return nightmare.evaluate(function (contents) {
                                var editors = $("div.CodeMirror");
                                $(editors[0]).prop("CodeMirror").setValue(contents[0]);
                                $(editors[1]).prop("CodeMirror").setValue(contents[1]);
                                $(editors[2]).prop("CodeMirror").setValue(contents[2]);
                                $(editors[3]).prop("CodeMirror").setValue(contents[3]);
                            }, contents);
                        })
                        .then(() => nightmare.evaluate(() => $("button[ng-click='c.save()']").click()));
                });
            })
            .catch((e) => {
                console.log(e);
            });