var path = require('path');
var join = path.join;
var relative = path.relative;
var gulp = require('gulp');
var css = require('gulp-css');

// Fixed css resource path
function onpath(path, property, file, wwwroot){
  if (/^[^./\\]/.test(path)) {
    path = './' + path;
  }

  if (path.indexOf('.') === 0) {
    path = join(dirname(file), path);
    path = relative(wwwroot, path);
    path = '/' + path;
    path = path.replace(/\\+/g, '/');
  }

  path = path.replace('assets/', 'online/');

  return path;
}

// Task
gulp.task('default', function (){
  gulp.src('assets/css/**/*.css')
    .pipe(css({ onpath: onpath }))
    .pipe(gulp.dest('online/css'))
});