alvarocastro/wow-realm-status-cli

#!/usr/bin/env node

const program = require('commander');
const ora = require('ora');
const {fetchRealm} = require('wow-realm-status');
const {version} = require('./package.json');
const {
    normalizeRealm,
    filterFields,
    outputAsJson,
    outputAsHuman
} = require('.');

program
    .version(version, '-v, --version', 'Output the current version')
    .option('-j, --json', 'Format output as JSON', false)
    .option('-s, --simple', 'Hide spinner', false)
    .option('-f, --fields <name,…>', 'Filter fields', '')
    .option('-c, --classic', 'Use for classic realms', false)
    .option('-bc, --burningcrusade', 'Use for Burning Crusade realms', false)
    .arguments('<region> <realm>')
    .action(async (region, realm) => {
        const options = program.opts();
        let spinner;

        if (!options.simple) {
            spinner = ora('Checking').start();
        }

        try {
            if (options.classic && options.burningcrusade) {
                throw new Error('You can only choose one game version');
            }

            let version = 'retail';
            if (options.classic) {
                version = 'classic';
            } else if (options.burningcrusade) {
                version = 'bc';
            }

            let data = await fetchRealm(region, realm, version);

            if (!data) {
                throw new Error('That realm doesn’t exist');
            }

            data = normalizeRealm(data);

            const fields = options.fields.split(',');
            if (options.fields && fields.length > 0) {
                data = filterFields(data, fields);
            }

            if (!options.simple) {
                spinner.stop();
            }

            if (options.json) {
                outputAsJson(data);
            } else {
                outputAsHuman(data);
            }
        } catch (error) {
            spinner.stop();
            if (options.json) {
                console.error(JSON.stringify({error: error.message}));
            } else {
                console.error(`DIE INSECT! ${error.message}!`);
            }
        }
    });

program.parse(process.argv);

if (process.argv.length <= 2) {
    program.help();
}