var gulp = require('gulp');
var gutil = require('gulp-util');
var gless = require('gulp-less');
var gclint = require('gulp-coffeelint');
var gcoffee = require('gulp-coffee');
var _ = require('lodash');
var lr = require('tiny-lr');
var static = require('node-static');
var exec = require('child_process').exec;

var server = lr();

var config = {
    paths: {
        less: {
            src: 'src/less/**/*.less',
            dest: 'public/css'
        },
        coffee: {
            src: 'src/coffee/**/*.coffee',
            dest: 'public/js'
        }
    },
    webport: 8080,
    lrport: 35729
};

gulp.task('less', function() {
    gulp.src(config.paths.less.src)
        .pipe(gless({ sourceMap: true }))
        .pipe(gulp.dest(config.paths.less.dest));
});

gulp.task('lint', function() {
    gulp.src(config.paths.coffee.src)
        .pipe(gclint());
});

gulp.task('coffee', ['lint'], function() {
    gulp.src(config.paths.coffee.src)
        .pipe(gcoffee({ bare: true }))
        .pipe(gulp.dest(config.paths.coffee.dest));
});

gulp.task('tiny', function(next) {
    server.listen(config.lrport, function(err) {
        if (err) {
            return console.error(err);
        }
        gutil.log('Server listening on port: ', config.lrport);
        next();
    });
});

gulp.task('server', function(next) {
    var file = new static.Server('./public', { cache: false });
    require('http').createServer(function(req, res) {
        req.addListener('end', function() {
            file.serve(req, res);
        }).resume();
    }).listen(config.webport, function() {
        gutil.log('Server listening on port: ', config.webport);
        next();
    });
});

gulp.task('open', function(next) {
    exec('open http://localhost:' + config.webport, function() {
        next();
    });
})

gulp.task('watch', ['tiny'], function () {
    gulp.watch(config.paths.less.src, ['less']);
    gulp.watch(config.paths.coffee.src, ['coffee']);

    gulp.watch(['./public/**/*', '!./public/vendor/**/*'], function(e) {
        gutil.log('Notifying browser of changes');
        server.changed({
            body: {
                files: [e.path]
            }
        });
    });
});

gulp.task('default', ['less', 'coffee', 'server', 'watch']);