gulpfile.js

var gulp = require('gulp'),
    spawn = require('child_process').spawn,
    fs = require('fs');

var server;

/**
 * $ gulp server
 * Launch the server in dev mode.  If there's a server already running, kill it.
 * Rebuild docs on start and file change.
 */
gulp.task('server', function() {
    gulp.run('docs')

    if (server) server.kill()
    server = spawn('node', ['server.js', '--dev'], {stdio: 'inherit'})
    server.on('close', function (code) {
        if (code === 8) {
            console.log('Error detected, waiting for changes...');
        }
    });
})

/**
 * $ gulp test
 * Run api tests via jasmine-node.
 */
gulp.task('test', function() {
    server = spawn('jasmine-node', ['./tests/'], {stdio: 'inherit'})
})


/**
 * $ gulp docs
 * Create web documentation data
 */
gulp.task('docs', function() {
    var outputFile = './api-documentation.json'
    var stream = fs.createWriteStream(outputFile);

    var docs = spawn('./docs/parse-docs.js', ['--file', 'server.js'])

    docs.stdout.pipe(stream);
    //docs.stderr.pipe(stream);

    docs.on('close', function (code) {
        console.log('Wrote API documentation JSON to: ' + outputFile);
        fs.createReadStream(outputFile).pipe(
            fs.createWriteStream('../ModelSEED-UI/app/views/docs/api-docs.json')
        );
    });
})


/**
 * $ gulp
 * Start the development environment
 */
gulp.task('default', function() {
    gulp.run('server')

    gulp.watch(['./server.js', './parsers/*.js', './docs/*.js'], function() {
        gulp.run('server')
    })
})

// clean up if an error goes unhandled.
process.on('exit', function() {
    if (server) server.kill()
})