Demonstrates a way to create an API Key User with Cloudant and set permissions on that API Key

GenerateCloudantAPIKey

// Demonstrates a way to create an API Key User with Cloudant and set permissions
var dbname = 'somedb';
var cloudantCreds = {
  username: 'cloudantusername',
  password: 'cloudantpassword'
};

var auth = 'Basic ' + new Buffer( cloudantCreds.username + ':' + cloudantCreds.password).toString('base64');

var options = {
    hostname: 'cloudant.com',
    port: 443,
    path: '/api/generate_api_key',
    method: 'POST',
    headers: {
        'Authorization' : auth,
        'Content-Type': 'application/x-www-form-urlencoded'
    }
};

console.log('Generating API Key on ' + dbname.toUpperCase() + ' ...');
var request=https.request(options, function(response) {
    response.setEncoding('utf8');
    response.on('data', function (chunk) {
        if (JSON.parse(chunk).ok === true) {
            console.log("API Key+Value pair successfully generated.");
            var apikeyuser = JSON.parse(chunk).key;
            var apikeypass = JSON.parse(chunk).password;

            //DEBUG ONLY
            console.log(apikeyuser + '-' + apikeypass);
            
            var data = querystring.stringify({
                username: apikeyuser,
                database: cloudantCreds.username + '/' + dbname,
                roles: '_writer'
            });

            options = {
                hostname: 'cloudant.com',
                port: 443,
                path: '/api/set_permissions',
                method: 'POST',
                headers: {
                    'Authorization' : auth,
                    'Content-Type': 'application/x-www-form-urlencoded',
                    'Content-Length': Buffer.byteLength(data)
                }
            };

            console.log('Setting permissions to writer on ' + dbname.toUpperCase() + ' for ' + apikeyuser + ' user ...');
            var request=https.request(options, function(response) {
                response.setEncoding('utf8');
                response.on('data', function (chunk) {
                    if (JSON.parse(chunk).ok === true) {
                        console.log("Permissions successfully set.");
                    } else {
                        console.log("Permissions fail to set");
                        console.log(JSON.parse(chunk).ok);
                        console.log('Body: ' + chunk);
                    }
                });
            });
            request.write(data);
            request.end();
        } else {
            console.log("API Key+Value pair failed to generate");
            console.log('Body: ' + chunk);
        }
    });
});
request.write('');
request.end();