'use strict';

var gulp = require('gulp');
var sass = require('gulp-sass');
var rename = require('gulp-rename');
var shell = require('gulp-shell')
var watch = require('gulp-watch');
var webserver = require('gulp-webserver');
var portscanner = require('portscanner');


gulp.task('webserver', ['build'], function() {
  // Find the first available port. Asynchronously checks, so first port
  // determined as available is returned.
  portscanner.findAPortNotInUse(8000, 8020, '127.0.0.1', function(error, port) {
    // console.log('AVAILABLE PORT AT: ' + port)
    gulp.src('.')
      .pipe(webserver({
        port:port,
        livereload: false,
        directoryListing: false,
        open: false,
        fallback: 'index.html'
      }));

  })
});

gulp.task('scss', function () {
  gulp.src('./assets/css/main.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./assets/css/dist'));
});

gulp.task('gui', function () {
  gulp.src('./assets/css/gui.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./assets/css/dist'));
});

gulp.task('sync', shell.task([
  './bin/sync.sh'
]));

gulp.task('build', ['sync'], shell.task([
  './bin/build.py'
]));


// default gulp task
gulp.task('default', ['scss', 'gui', 'webserver'], function() {
  gulp.watch('./assets/css/**/*.scss', ['scss']);
  gulp.watch('./assets/css/gui.scss', ['gui']);
  gulp.watch(['bin/build.py', './book-src/*', './templates/*.tpl.html'], ['build']);
});