const carlo = require('carlo');
const fse = require('fs-extra');
const urlExists = require('url-exists');

// command line arguments
let path = 'index.html'
process.argv.forEach((value, index, array) => {
    if (index === 2) {
        path = value
    }
});

(async () => {
    // Launch the browser.
    const opts = {}
    
    // Set path to custom chrome
    const chrome = `${__dirname}/../chrome/chrome.exe`
    if (fse.pathExistsSync(chrome)) {
        opts.executablePath = chrome
    }
    
    // Launch app
    const app = await carlo.launch(opts)
    
    // Terminate Node.js process on app window closing.
    app.on('exit', () => process.exit())
    
    // Tell carlo where your web files are located.
    app.serveFolder(`${__dirname}/../`)
    
    // Check if URL exists
    urlExists('https://localhost:8443', async (error, exists) => {
        
        if (exists) {
            console.info('Serve files via server')
            app.serveOrigin('https://localhost:8443')       // Optional
        } else {
            console.info('Serve files from file system')
        }
        
        // Expose 'env' function in the web environment.
        await app.exposeFunction('env', _ => process.env)
    
        // Navigate to the main page of your app.
        console.info('Starting carlo with', path)
        await app.load(path)
    })
})()