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gulpfile.js
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gulpfile.js
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'use strict';
const PROD = !!(require('yargs').argv.production);
let site = require('./site');
const gulp = require('gulp');
const browser = require('browser-sync');
const Metalsmith = require('metalsmith');
const Handlebars = require('handlebars');
require('./handlebars-helper')(Handlebars);
// load metalsmith plugin
const $ = {
plumber: require('gulp-plumber'),
sourcemaps: require('gulp-sourcemaps'),
sass: require('gulp-sass'),
uglify: require('gulp-uglify'),
cssnano: require('gulp-cssnano'),
autoprefixer: require('gulp-autoprefixer'),
inlineSource: require('gulp-inline-source'),
babel: require('gulp-babel'),
concat: require('gulp-concat')
};
const MetalSmithProductionPlugins = [
'metalsmith-html-minifier'
];
function reloadSiteConfig(done) {
delete require.cache[require.resolve('./site.js')];
site = require('./site');
done();
}
// task build metalsmith
function metalsmith(done) {
let ms = new Metalsmith(process.cwd());
ms.clean(false);
ms.source(site.contentRoot);
ms.destination(site.buildRoot);
ms.metadata(site.metadata ? site.metadata : {});
// load cac metalsmith addon + options
Object.keys(site.metalsmith).forEach(pluginName => {
// load plugin đúng theo dev hoặc prod mode
if (MetalSmithProductionPlugins.indexOf(pluginName) == 0 && !PROD)
return;
let options = site.metalsmith[pluginName];
if (options._enable !== undefined) {
if (options._enable == false)
return;
delete options._enable;
}
let plugin = require(pluginName);
// một số config thêm cho base metalsmith tùy theo plugin
switch (pluginName) {
case 'metalsmith-matters':
// disable front matter nếu sữ dụng metalsmith-matters
ms.frontmatter(false);
ms.use(plugin(options));
break;
case 'metalsmith-html-minifier':
ms.use(plugin('*.html', options));
break;
default:
ms.use(plugin(options));
}
});
ms.build(function (err) {
if (err) {
console.log(err);
done(err);
} else
done();
});
}
/**
* build site's sass file, xử lý autoprefixer
* tạo source map nếu ở chế độ debug
* ở chế độ production apply các plugin: uncss, cssnano, autoprefixer
*/
function sass() {
let task = gulp.src(`${site.styleRoot}/**/*.{scss,sass}`)
.pipe($.plumber());
if (!PROD)
task = task.pipe($.sourcemaps.init());
if (site.style.sass) {
let sassConfig = Object.assign({}, site.style.sass);
sassConfig.outputStyle = 'expanded';
task = task.pipe($.sass(sassConfig).on('error', $.sass.logError));
if (site.style.autoprefixer)
task = task.pipe($.autoprefixer(site.style.autoprefixer));
}
if (PROD) {
task = task.pipe($.cssnano({autoprefixer: false}));
} else {
task = task.pipe($.sourcemaps.write());
}
return task.pipe(gulp.dest(`${site.buildRoot}/css`))
.pipe(browser.reload({stream: true}));
}
/**
* xử lý script của site
* nếu ở chế độ debug thì tạo source map
* nếu ở chế độ production thì minify
* concat script thành app.js nếu ${site.script.concat} == true
*/
function script() {
const IS_CONCAT = site.script.concat && site.script.concat === true;
let concatName = 'app.js';
if (site.script.concatName !== undefined && typeof(site.script.concatName) === 'string')
concatName = site.script.concatName;
let task = gulp.src(site.script.files)
.pipe($.plumber());
if (!PROD)
task = task.pipe($.sourcemaps.init());
// babel es6 -> es5
task = task.pipe($.babel({presets: ['es2015'], compact: false}));
if (IS_CONCAT)
task = task.pipe($.concat(concatName));
if (PROD) {
task = task.pipe($.uglify().on('error', e => {
console.log(e);
}));
} else {
task = task.pipe($.sourcemaps.write());
}
return task.pipe(gulp.dest(`${site.buildRoot}/js`));
}
/**
* Inline css, js task
*/
function inlineSource(done) {
if (!PROD) {
console.log('development mode, skipping inlineSource');
return done();
}
return gulp.src(`${site.buildRoot}/**/*.html`)
.pipe($.inlineSource({
rootpath: site.buildRoot,
ignore: ['svg', 'png'],
compress: false,
swallowErrors: false
}))
.pipe(gulp.dest(file => {
return file.base;
}));
}
// copy moi thu trong thu muc ${site.assetRoot} sang ${site.buildRoot}
function asset() {
return gulp.src(`${site.assetRoot}/**/*`)
.pipe($.plumber())
.pipe(gulp.dest(site.buildRoot));
}
// tạo local server host nội dung của ${site.buildRoot}
function server(done) {
browser.init({
server: site.buildRoot,
port: site.port
});
done();
}
function serverForApp(done) {
browser.init({
server: site.buildRoot,
ui: false,
open: false
});
done();
}
// Xóa ${buildRoot} (metalsmith tự động xóa)
// build metalsmith, sass, javascript, image
// copy tất cả qua ${buildRoot}
gulp.task('build', gulp.series(metalsmith, gulp.parallel(asset, script, sass), inlineSource));
function reload(done) {
browser.reload();
done();
}
function watch() {
gulp.watch(['site.js'], gulp.series(reloadSiteConfig, 'build', reload));
gulp.watch(`${site.assetRoot}/**/*`, gulp.series(asset, reload)); // watch asset
gulp.watch(`${site.styleRoot}/**/*.{scss,sass}`, sass); // watch style
gulp.watch(`${site.scriptRoot}/**/*.js`, gulp.series(script, reload)); // watch script
gulp.watch([
`${site.contentRoot}/**/*`,
`${site.layoutRoot}/**/*`
], gulp.series(metalsmith, inlineSource, reload));
}
// Build the site, run the server, and watch for file changes
gulp.task('default', gulp.series('build', server, watch));
gulp.task('app-watch', gulp.series('build', serverForApp, watch));