import { sveltekit } from '@sveltejs/kit/vite';
import tailwindcss from '@tailwindcss/vite';
import { playwright } from '@vitest/browser-playwright';
import { defineConfig } from 'vitest/config';

import type { IncomingMessage, ServerResponse } from 'http';
import type { Plugin, PreviewServer, ViteDevServer } from 'vite';

const addHeaders = (res: ServerResponse) => {
	res.setHeader('Access-Control-Allow-Origin', '*');
	res.setHeader('Access-Control-Allow-Methods', 'GET');
	res.setHeader('Cross-Origin-Opener-Policy', 'same-origin');
	res.setHeader('Cross-Origin-Embedder-Policy', 'require-corp');
};

const viteServerConfig = (): Plugin => ({
	name: 'add-headers',
	configureServer: (server: ViteDevServer) => {
		server.middlewares.use((_req: IncomingMessage, res: ServerResponse, next: () => void) => {
			addHeaders(res);
			next();
		});
	},
	configurePreviewServer: (server: PreviewServer) => {
		server.middlewares.use((_req: IncomingMessage, res: ServerResponse, next: () => void) => {
			addHeaders(res);
			next();
		});
	}
});

export default defineConfig({
	plugins: [tailwindcss(), sveltekit(), viteServerConfig()],

	test: {
		expect: { requireAssertions: true },

		projects: [
			{
				extends: './vite.config.ts',

				test: {
					name: 'client',

					browser: {
						enabled: true,
						provider: playwright(),
						instances: [{ browser: 'chromium', headless: true }]
					},

					include: ['src/**/*.svelte.{test,spec}.{js,ts}'],
					exclude: ['src/lib/server/**']
				}
			},

			{
				extends: './vite.config.ts',

				test: {
					name: 'server',
					environment: 'node',
					include: ['src/**/*.{test,spec}.{js,ts}'],
					exclude: ['src/**/*.svelte.{test,spec}.{js,ts}']
				}
			}
		]
	}
});