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gulpfile.js
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gulpfile.js
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'use strict';
const plugins = require('gulp-load-plugins');
const yargs = require('yargs');
const browser = require('browser-sync');
const gulp = require('gulp');
const replace = require('gulp-replace');
const panini = require('panini');
const yaml = require('js-yaml');
const fs = require('fs');
const webpackStream = require('webpack-stream');
const webpack2 = require('webpack');
const named = require('vinyl-named');
const autoprefixer = require('autoprefixer');
const sitemap = require('gulp-sitemap');
const rimraf = require('rimraf');
const webp = require('gulp-webp');
const jsonTransform = require('gulp-json-transform');
const { processBlogFiles } = require('./src/services/blog-processor');
var rename = require("gulp-rename");
// Load all Gulp plugins into one variable
const $ = plugins();
// Check for --develop or --dev flag
const PRODUCTION = !(yargs.argv.develop || yargs.argv.dev);
// Load config from config.yml
const { COMPATIBILITY, PORT, UNCSS_OPTIONS, PATHS } = loadConfig();
function loadConfig() {
let ymlFile = fs.readFileSync('config.yml', 'utf8');
return yaml.load(ymlFile);
}
function isCI() {
return !!process.env.CI;
}
// Build the "dist" folder by running all of the below tasks
// Sass must be run later so UnCSS can search for used classes in the others assets.
gulp.task(
'build',
gulp.series(
clean,
cleanBlogs,
buildBlogFiles,
gulp.parallel(
pages, javascript, images_minify, copy, copyFAQs, copyFAQRedirects
),
images_webp,
sass,
build_sitemap,
createFaqRedirects,
replaceVersionNumbers
)
);
gulp.task('blog', gulp.series(cleanBlogs, buildBlogFiles));
// Build the site, run the server, and watch for file changes
gulp.task('default', gulp.series('build', server, watch));
// Delete the "dist" folder
// This happens every time a build starts
function clean(done) {
rimraf(PATHS.dist, done);
}
function cleanBlogs(done) {
rimraf(PATHS.blogOutputs, done);
}
// Copy files out of the assets folder
// This task skips over the "img", "js", and "scss" folders, which are parsed separately
function copy() {
gulp.src(PATHS.rootAssets).pipe(gulp.dest(PATHS.dist));
return gulp.src(PATHS.assets).pipe(gulp.dest(PATHS.dist + '/assets'));
}
function copyBlogImgs() {
return gulp.src([
'blog/**/*',
'!blog/**/*.md'
])
.pipe(gulp.dest(PATHS.dist + '/assets/img/blog/'));
}
// Prepare blog .md files to be used as HTML
function buildBlogFiles(done) {
copyBlogImgs();
processBlogFiles();
done();
}
// Copy page templates into finished HTML files
function pages() {
return gulp
.src('src/pages/**/*.{html,hbs,handlebars}')
.pipe(
panini({
root: 'src/pages/',
layouts: 'src/layouts/',
partials: 'src/partials/',
data: 'src/data/',
helpers: 'src/helpers/'
})
)
.pipe(gulp.dest(PATHS.dist));
}
// Load updated HTML templates and partials into Panini
function resetPages(done) {
panini.refresh();
done();
}
// Compile Sass into CSS
// In production, the CSS is compressed
function sass() {
const postCssPlugins = [
// Autoprefixer
autoprefixer({ overrideBrowserslist: COMPATIBILITY })
// UnCSS - Uncomment to remove unused styles in production
// PRODUCTION && uncss.postcssPlugin(UNCSS_OPTIONS),
].filter(Boolean);
return gulp
.src('src/assets/scss/style.scss')
.pipe($.sourcemaps.init())
.pipe(
$.sass({
includePaths: PATHS.sass
}).on('error', $.sass.logError)
)
.pipe($.postcss(postCssPlugins))
.pipe($.if(PRODUCTION, $.cleanCss({ compatibility: 'ie9' })))
.pipe($.if(!PRODUCTION, $.sourcemaps.write()))
.pipe(gulp.dest(PATHS.dist + '/assets/css'))
.pipe(browser.reload({ stream: true }));
}
let webpackConfig = {
mode: PRODUCTION ? 'production' : 'development',
module: {
rules: [
{
test: /\.js$/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-env'],
compact: false
}
}
}
]
},
devtool: !PRODUCTION && 'source-map'
};
// Combine JavaScript into one file
// In production, the file is minified
function javascript() {
return gulp
.src(PATHS.entries)
.pipe(named())
.pipe($.sourcemaps.init())
.pipe(webpackStream(webpackConfig, webpack2))
.pipe(
$.if(
PRODUCTION,
$.uglify().on('error', e => {
console.error('Uglify error', e);
})
)
)
.pipe($.if(!PRODUCTION, $.sourcemaps.write()))
.pipe(gulp.dest(PATHS.dist + '/assets/js'));
}
// Copy images to the "dist" folder
// In production, the images are compressed
function images_minify() {
return gulp
.src('src/assets/img/**/*')
.pipe(
$.if(PRODUCTION, $.imagemin([$.imagemin.mozjpeg({ progressive: true })]))
)
.pipe(gulp.dest(PATHS.dist + '/assets/img'));
}
function images_webp() {
return gulp
.src('src/assets/img/**/*')
.pipe(webp())
.pipe(gulp.dest(PATHS.dist + '/assets/img'));
}
function copyFAQs(done){
copyFAQ("de");
copyFAQ("en");
copyFAQ("mn");
done();
}
function copyFAQ(lang) {
return gulp
.src(`src/data/faq${(lang === "mn" ? "" : ("_" + lang))}.json`)
.pipe(jsonTransform(function (data, file) {
let faq = {}
data['section-main'].sections.forEach((section) => {
section.accordion.forEach((faqEntry) => {
let searchEntry = faqEntry.title + " " + faqEntry.textblock.join(" ");
faq[faqEntry.anchor] = searchEntry.toLowerCase().replace( /(<([^>]+)>)/ig, ' ');
})
});
return faq;
}))
.pipe(rename('faq.json'))
.pipe(gulp.dest(PATHS.dist + `/${lang}/faq/`));
}
function copyFAQRedirects() {
return gulp.src("src/data/faq_redirects.json").pipe(gulp.dest(PATHS.dist + "/assets/data"));
}
// Start a server with BrowserSync to preview the site in
function server(done) {
browser.init(
{
server: {
baseDir: PATHS.dist,
serveStaticOptions: {
extensions: ['html']
}
},
port: PORT,
open: !isCI() // do not open webbrowser if running in CI
},
done
);
}
// Reload the browser with BrowserSync
function reload(done) {
browser.reload();
done();
}
// Watch for changes to static assets, pages, Sass, and JavaScript
function watch(done) {
if (isCI()) {
console.log('Running in CI, skipping watch task.');
done();
return;
}
gulp.watch(PATHS.assets, copy);
gulp
.watch('blog/**/*')
.on('all', gulp.series(buildBlogFiles, pages));
gulp
.watch('src/pages/**/*.html')
.on('all', gulp.series(pages, reload));
gulp
.watch('src/{layouts,partials}/**/*.html')
.on('all', gulp.series(resetPages, pages, reload));
gulp
.watch('src/data/**/*.{js,json,yml}')
.on('all', gulp.series(resetPages, pages, reload));
gulp
.watch('src/helpers/**/*.js')
.on('all', gulp.series(resetPages, pages, reload));
gulp.watch('src/assets/scss/**/*.scss').on('all', sass);
gulp
.watch('src/assets/js/**/*.js')
.on('all', gulp.series(javascript, reload));
gulp
.watch('src/assets/img/**/*')
.on('all', gulp.series(images_minify, images_webp, reload));
done();
}
// generate an up-to-date sitemap
function build_sitemap() {
return gulp
.src([PATHS.dist + "/**/*.html", "!" + PATHS.dist + '/error.html'])
.pipe(sitemap({
siteUrl: "https://coronawarn.app",
priority: function (siteUrl, loc, entry) {
// Reduce priority by 0.2 per level
return 1.0 - (entry.file.split('/').length - 1) * 0.2
}
}))
.pipe(gulp.dest(PATHS.dist))
}
// Just takes the properly build .html files and removes the ending
function createFaqRedirects() {
return gulp
.src([PATHS.dist + "/**/faq/*.html", "!" + PATHS.dist + '/**/faq/index.html'])
.pipe(rename(function (path) {
// Returns a completely new object, make sure you return all keys needed!
return {
dirname: path.dirname,
basename: path.basename,
extname: ""
};
}))
.pipe(gulp.dest(PATHS.dist))
}
// replaces some values inside json that cant be replaced with handlebars exprerssion since they are inside json
function replaceVersionNumbers() {
return gulp
.src([PATHS.dist + "/**/*.html"])
.pipe(replace('[ios.latest-os-version]', '14.2'))
.pipe(replace('[ios.minimum-required-os-version]', '13.6'))
.pipe(replace('[ios.current-app-version]', '1.6.1'))
.pipe(replace('[android.latest-os-version]', '11'))
.pipe(replace('[android.minimum-required-os-version]', '6'))
.pipe(replace('[android.current-app-version]', '1.6.1'))
.pipe(replace('[last-update]', new Date().toISOString().split('T')[0]))
.pipe(gulp.dest(PATHS.dist))
}