// SPDX-License-Identifier: AGPL-3.0-or-later

import {sources} from '@rspack/core';

const STATIC_CDN_ENDPOINT_PLACEHOLDER = '{{STATIC_CDN_ENDPOINT}}';

function resolveStaticCdnEndpoint(staticCdnEndpoint) {
	const value = staticCdnEndpoint?.trim().replace(/\/+$/, '');
	return value || STATIC_CDN_ENDPOINT_PLACEHOLDER;
}

function generateManifest(staticCdnEndpoint) {
	const cdn = resolveStaticCdnEndpoint(staticCdnEndpoint);
	const manifest = {
		name: 'Fluxer',
		short_name: 'Fluxer',
		description:
			'Fluxer is a free and open source instant messaging and VoIP platform built for friends, groups, and communities.',
		start_url: '/',
		display: 'standalone',
		orientation: 'portrait-primary',
		theme_color: '#4641D9',
		background_color: '#2b2d31',
		categories: ['social', 'communication'],
		lang: 'en',
		scope: '/',
		icons: [
			{
				src: `${cdn}/web/android-chrome-192x192.png`,
				sizes: '192x192',
				type: 'image/png',
				purpose: 'maskable any',
			},
			{
				src: `${cdn}/web/android-chrome-512x512.png`,
				sizes: '512x512',
				type: 'image/png',
				purpose: 'maskable any',
			},
			{
				src: `${cdn}/web/apple-touch-icon.png`,
				sizes: '180x180',
				type: 'image/png',
			},
			{
				src: `${cdn}/web/favicon-32x32.png`,
				sizes: '32x32',
				type: 'image/png',
			},
			{
				src: `${cdn}/web/favicon-16x16.png`,
				sizes: '16x16',
				type: 'image/png',
			},
		],
	};

	return JSON.stringify(manifest, null, 2);
}

function generateBrowserConfig(staticCdnEndpoint) {
	const cdn = resolveStaticCdnEndpoint(staticCdnEndpoint);
	return `<?xml version="1.0" encoding="utf-8"?>
<browserconfig>
  <msapplication>
    <tile>
      <square150x150logo src="${cdn}/web/mstile-150x150.png"/>
      <TileColor>#4641D9</TileColor>
    </tile>
  </msapplication>
</browserconfig>`;
}

function generateRobotsTxt() {
	return 'User-agent: *\nAllow: /\n';
}

export class StaticFilesPlugin {
	constructor(options = {}) {
		this.staticCdnEndpoint = options.staticCdnEndpoint;
	}

	apply(compiler) {
		compiler.hooks.thisCompilation.tap('StaticFilesPlugin', (compilation) => {
			compilation.hooks.processAssets.tap(
				{
					name: 'StaticFilesPlugin',
					stage: compilation.PROCESS_ASSETS_STAGE_ADDITIONAL,
				},
				() => {
					compilation.emitAsset('manifest.json', new sources.RawSource(generateManifest(this.staticCdnEndpoint)));
					compilation.emitAsset(
						'browserconfig.xml',
						new sources.RawSource(generateBrowserConfig(this.staticCdnEndpoint)),
					);
					compilation.emitAsset('robots.txt', new sources.RawSource(generateRobotsTxt()));
				},
			);
		});
	}
}

export function staticFilesPlugin(options) {
	return new StaticFilesPlugin(options);
}