webgme/webgme-cli

#!/usr/bin/env node

// print the versions of:
//  - the cli tool
//  - webgme in the cli
//  - webgme (in the given project)
//  - node
//  - mongo
//  - mongo uri's

'use strict';
var Command = require('commander').Command,
    program = new Command(),
    spawn = require('child_process').exec,
    path = require('path'),
    fs = require('fs'),
    utils = require('../src/utils'),
    dirname = utils.normalize(__dirname),
    exists = require('exists-file'),
    versions = {};

program
    .option('-o,--output, <filename>', 'Store info as json')
    .parse(process.argv);

// Get all the versions!
// cli tool
var pkgJson = require(dirname + '/../package.json'),
    appRoot,
    jsonPath,
    job;

versions.cli = pkgJson.version;

// cli tool's webgme
pkgJson = require(dirname + '/../node_modules/webgme-engine/package.json');
versions['cli-webgme'] = pkgJson.version;

// webgme in given project
appRoot = utils.getRootPath(process.cwd());
if (appRoot) {
    jsonPath = path.join(appRoot, 'node_modules', 'webgme', 'package.json');
    if (exists(jsonPath)) {
        jsonPath = utils.normalize(jsonPath);
        pkgJson = require(jsonPath);
        versions['app-webgme'] = pkgJson.version;
    }
}

// node
versions.node = process.version;

// npm
var jobs = 0;
versions.npm = '';
job = spawn('npm -v');
jobs++;
job.stdout.on('data', function(buffer) {
    versions.npm += buffer.toString();
});
job.on('close', function(code) {
    if (code === 1) {
        versions.npm = 'n/a';
    } else {
        versions.npm = versions.npm.replace(/\n/g, '');
    }
    done();
});

// mongo
var output = '';
jobs++;
job = spawn('mongod -version');
job.stdout.on('data', function(buffer) {
    output += buffer.toString();
});
job.on('close', function(code) {
    if (code === 1) {
        versions.mongo = 'n/a';
    } else {
        versions.mongo = output.match(/version (v[0-9]+\.[0-9]+\.[0-9]+)/)[1];
    }
    done();
});

function done() {
    if (--jobs > 0) {
        return;
    }

    // Print the versions or write to file
    if (program.output) {
        fs.writeFileSync(program.output, JSON.stringify(versions, null, 2));
    } else {
        Object.keys(versions).forEach(function(app) {
            console.log(app + ': ' + versions[app]);
        });

        checkForUpdates(function(updatesAvailable) {
            if (updatesAvailable) {
                console.log('');
                console.log('A new version of webgme-cli is available. Install with:');
                console.log('');
                console.log('    npm install -g webgme-cli');
                console.log('');
            }
        });
    }
}

function checkForUpdates(cb) {
    var version = '',
        job = spawn('npm view webgme-cli version');

    job.stdout.on('data', function(buffer) {
        version += buffer.toString();
    });
    job.on('close', function(code) {
        version = version.replace(/\n$/, '');
        cb(versions.cli !== version);
    });
}