04.BrowserLogger

//problem 4 - Browser Logger
function browserLogger(obj, commands) {
    let browser = JSON.parse(JSON.stringify(obj));
    let browserName = 'Browser Name';
    let openTabs = "Open Tabs";
    let recentlyClosed = 'Recently Closed';
    let browserLogs = 'Browser Logs';

    for (let command of commands) {
        let tokens = command.split(' ').filter(t => t !== '');
        if (tokens[0] === "Open") {
            browser[openTabs].push(tokens[1].trim());
            browser[browserLogs].push(command);

        } else if (tokens[0] === "Close") {
            let tab = tokens[1].trim();
            if(browser[openTabs].includes(tab)) {
                browser[recentlyClosed].push(tab);
                let index = browser[openTabs].indexOf(tab);
                browser[openTabs].splice(index,1);
                browser[browserLogs].push(tokens[0] + ' ' + tokens[1]);
            }

        } else if(command === 'Clear History and Cache'){
            browser[openTabs] = [];
            browser[recentlyClosed] = [];
            browser[browserLogs] = [];
        }
    }

    let result = [];
    result.push(browser[browserName]);
    result.push('Open Tabs: ' + browser[openTabs].join(', '));
    result.push('Recently Closed: ' + browser[recentlyClosed].join(', '));
    result.push('Browser Logs: ' + browser[browserLogs].join(', '));
    return result.join('\n').trim();
}
    let result = [];
    result.push(browser[browserName]);
    result.push('Open Tabs: ' + (browser[openTabs].length > 0 ? browser[openTabs].join(', ') : ''));
    result.push('Recently Closed: ' + (browser[recentlyClosed].length > 0 ? browser[recentlyClosed].join(', ') : ''));
    result.push('Browser Logs: ' + (browser[browserLogs].length > 0 ? browser[browserLogs].join(', ') : ''));
    return result.join('\n').trim();
}

console.log(browserLogger(
    {"Browser Name":"Google Chrome",
    "Open Tabs":["Facebook", 'Facebook', "YouTube","Google Translate"],
    "Recently Closed":["Yahoo","Gmail"],
    "Browser Logs":["Open YouTube","Open Yahoo","Open Google Translate","Close Yahoo","Open Gmail","Close Gmail","Open Facebook"]},
    ['Close Facebook', 'Open StackOverFlow', 'Open Google']
));

console.log(browserLogger(
    {"Browser Name":"Mozilla Firefox",
    "Open Tabs":["YouTube"],
    "Recently Closed":['Gmail', 'Dropbox'],
    "Browser Logs":['Open Gmail', 'Close Gmail', 'Open Dropbox', 'Open YouTube', 'Close Dropbox']},
    ['Open Wikipedia', 'Clear History and Cache', 'Open Twitter']
));