gulpfile.es6

'use strict';
var del = require('del');
var gulp = require('gulp');
var seq = require('run-sequence');
var shell = require('gulp-shell');
var mocha = require('gulp-mocha');

var opt = {
  bin:           './bin',
  lib:           './lib',
  src:           './src',
  test:          './test',
  testEspowered: './test-espowered',
  npmbin:        './node_modules/.bin'
};

var bin = {
  tsc:        `${opt.npmbin}/tsc`,
  babel:      `${opt.npmbin}/babel`,
  browserify: `${opt.npmbin}/browserify`
};

/* clean */
gulp.task('clean', del.bind(null, [
  `${opt.src }/**/*.js`,
  `${opt.src }/**/*.js.map`,
  `${opt.test}/**/*.js`,
  `${opt.test}/**/*.js.map`,
  opt.lib,
  opt.testEspowered
]));

/* ts */
var tsc = `${bin.tsc} -t es5 -m commonjs --noImplicitAny --noEmitOnError`;
gulp.task('ts:src_', shell.task([`find ${opt.src} -name "*.ts" | xargs ${tsc}`]));
gulp.task('ts:src', (done) => seq('clean', 'ts:src_', done));
gulp.task('ts',     (done) => seq('clean', ['ts:src_'], done));

/* babel */
gulp.task('babel:test', shell.task([`${bin.babel} ${opt.test} --plugins babel-plugin-espower --out-dir ${opt.testEspowered}`]));

/* watch */
gulp.task('exec-watch:test', ['test'], () => {
  gulp.watch([`${opt.src}/**/*.ts`, `${opt.test}/**/*.es6`], ['test'])
    .on('error', (err) => process.exit(1));
});
gulp.task('exec-watch:cli', ['build:src'], () => {
  gulp.watch([`${opt.src}/**/*.ts`], ['build:src'])
    .on('error', (err) => process.exit(1));
});


function watch(target) {
  return () => {
    var spawn = () => {
      var proc = require('child_process').spawn('gulp', [`exec-watch:${target}`], {stdio: 'inherit'});
      proc.on('close', (c) => spawn());
    };
    spawn();
  };
}

gulp.task('watch:test', watch('test'));
gulp.task('watch:cli',  watch('cli'));

/* build */
gulp.task('copy:src', () => {
  gulp
    .src(`${opt.src}/**/*.js`)
    .pipe(gulp.dest(opt.lib));
});
gulp.task('copy:dts', () => {
  gulp
    .src(`./typings/cw-htmlconv/cw-htmlconv.d.ts`)
    .pipe(gulp.dest('./'));
});
gulp.task('build:standalone', shell.task([`${bin.browserify} -p licensify --standalone cwHtmlconv ./index.js -o ./cw-htmlconv.js`]));
gulp.task('build:src', (done) => seq('ts:src', ['copy:src', 'copy:dts'], done));
gulp.task('build', (done) => seq('build:src', 'build:standalone', done));

/* test */
gulp.task('mocha', () => {
  return gulp
    .src(`${opt.testEspowered}/**/*.js`)
    .pipe(mocha({reporter: 'spec'}))
    .on('error', (err) => process.exit(1));
});
gulp.task('test', (done) => {seq('build:src', 'babel:test', 'mocha', done)});