/* eslint-disable import/no-extraneous-dependencies */
const fs = require('fs');

const gulp = require('gulp');
const concat = require('gulp-concat');
const terser = require('gulp-terser');
const cleanCSS = require('gulp-clean-css');
const ejs = require('gulp-ejs');
const rename = require('gulp-rename');
const htmlmin = require('gulp-htmlmin');
const del = require('del');
const s3Upload = require('gulp-s3-upload');

const clean = () => del(['./dist**']);

// get cloudfront
const AWS = require('aws-sdk');

AWS.config.update({ region: 'us-east-1' });
const cloudfront = new AWS.CloudFront({ apiVersion: '2020-01-01' });

const jsSourcesData = [
	'server/scripts/data/travelcities.js',
	'server/scripts/data/regionalcities.js',
	'server/scripts/data/stations.js',
	'server/scripts/data/states.js',
];
gulp.task('compress_js_data', () => gulp.src(jsSourcesData)
	.pipe(concat('data.min.js'))
	.pipe(terser())
	.pipe(gulp.dest('./dist/resources')));

const jsSources = [
	'server/scripts/vendor/auto/jquery.js',
	'server/scripts/vendor/jquery.autocomplete.min.js',
	'server/scripts/vendor/auto/nosleep.js',
	'server/scripts/vendor/auto/swiped-events.js',
	'server/scripts/index.js',
	'server/scripts/libgif.js',
	'server/scripts/vendor/auto/luxon.js',
	'server/scripts/vendor/auto/suncalc.js',
	'server/scripts/modules/draw.js',
	'server/scripts/modules/weatherdisplay.js',
	'server/scripts/modules/icons.js',
	'server/scripts/modules/utilities.js',
	'server/scripts/modules/currentweather.js',
	'server/scripts/modules/currentweatherscroll.js',
	'server/scripts/modules/latestobservations.js',
	'server/scripts/modules/travelforecast.js',
	'server/scripts/modules/regionalforecast.js',
	'server/scripts/modules/localforecast.js',
	'server/scripts/modules/extendedforecast.js',
	'server/scripts/modules/almanac.js',
	'server/scripts/modules/radar.js',
	'server/scripts/modules/hourly.js',
	'server/scripts/modules/progress.js',
	'server/scripts/modules/navigation.js',
];
gulp.task('compress_js', () => gulp.src(jsSources)
	.pipe(concat('ws.min.js'))
	.pipe(terser())
	.pipe(gulp.dest('./dist/resources')));

const cssSources = [
	'server/styles/index.css',
];
gulp.task('compress_css', () => gulp.src(cssSources)
	.pipe(concat('ws.min.css'))
	.pipe(cleanCSS())
	.pipe(gulp.dest('./dist/resources')));

const htmlSources = [
	'views/*.ejs',
];
gulp.task('compress_html', () => {
	const { version } = JSON.parse(fs.readFileSync('./package.json'));
	return gulp.src(htmlSources)
		.pipe(ejs({
			production: version,
			version,
		}))
		.pipe(rename({ extname: '.html' }))
		.pipe(htmlmin({ collapseWhitespace: true }))
		.pipe(gulp.dest('./dist'));
});

const otherFiles = [
	'server/robots.txt',
	'server/manifest.json',
];
gulp.task('copy_other_files', () => gulp.src(otherFiles, { base: 'server/' })
	.pipe(gulp.dest('./dist')));

const s3 = s3Upload({
	useIAM: true,
}, {
	region: 'us-east-1',
});
const uploadSources = [
	'dist/**',
];
gulp.task('upload', () => gulp.src(uploadSources, { base: './dist' })
	.pipe(s3({
		Bucket: 'weatherstar',
		StorageClass: 'STANDARD',
		maps: {
			CacheControl: (keyname) => {
				if (keyname.indexOf('index.html') > -1) return 'max-age=300'; // 10 minutes
				return 'max-age=2592000'; // 1 month
			},
		},
	})));

gulp.task('invalidate', async () => cloudfront.createInvalidation({
	DistributionId: 'E9171A4KV8KCW',
	InvalidationBatch: {
		CallerReference: (new Date()).toLocaleString(),
		Paths: {
			Quantity: 1,
			Items: ['/*'],
		},
	},
}).promise());

module.exports = gulp.series(clean, gulp.parallel('compress_js', 'compress_js_data', 'compress_css', 'compress_html', 'copy_other_files'), 'upload', 'invalidate');