import svelte from 'rollup-plugin-svelte'
import commonjs from '@rollup/plugin-commonjs'
import resolve from '@rollup/plugin-node-resolve'
import livereload from 'rollup-plugin-livereload'
import { terser } from 'rollup-plugin-terser'
import css from 'rollup-plugin-css-only'
import postcss from 'rollup-plugin-postcss'
import dev from 'rollup-plugin-dev'
import copy from 'rollup-plugin-copy'
import json from '@rollup/plugin-json'
import replace from '@rollup/plugin-replace'

const production = !process.env.ROLLUP_WATCH

/*
function serve() {
	let server;

	function toExit() {
		if (server) server.kill(0);
	}

	return {
		writeBundle() {
			if (server) return;
			server = require('child_process').spawn('npm', ['run', 'start', '--', '--dev'], {
				stdio: ['ignore', 'inherit', 'inherit'],
				shell: true
			});

			process.on('SIGTERM', toExit);
			process.on('exit', toExit);
		}
	};
}*/

export default {
  input: 'src/main.js',
  output: {
    sourcemap: true,
    format: 'iife',
    name: 'app',
    file: 'public/build/bundle.js'
  },
  plugins: [
    replace({
      'process.env.NODE_ENV': JSON.stringify(production ? 'production' : 'dev')
    }),
    svelte({
      compilerOptions: {
        // enable run-time checks when not in production
        dev: !production
      }
    }),

    json(),

    // Copy font files
    copy({
      targets: [
        {
          src: [
            'node_modules/bootstrap-icons/font/fonts/bootstrap-icons.woff',
            'node_modules/bootstrap-icons/font/fonts/bootstrap-icons.woff2'
          ],
          dest: 'public/build/fonts'
        }
      ]
    }),

    // we'll extract any component CSS out into
    // a separate file - better for performance
    css({ output: 'bundle.css' }),

    // for FullCalendar
    postcss(),

    // If you have external dependencies installed from
    // npm, you'll most likely need these plugins. In
    // some cases you'll need additional configuration -
    // consult the documentation for details:
    // https://github.com/rollup/plugins/tree/master/packages/commonjs
    resolve({
      browser: true,
      dedupe: ['svelte', 'svelte/transition', 'svelte/internal']
    }),
    commonjs(),

    // In dev mode, call `npm run start` once
    // the bundle has been generated
    !production &&
      dev({
        dirs: ['public'],
        proxy: [
          {
            from: '/cal/klub-reseau',
            to: 'https://nuage.beta.rz.ens.wtf/remote.php/dav/public-calendars/'
          },
          {
            from: '/cal/eleves-ens',
            to: 'https://cloud.eleves.ens.fr/remote.php/dav/public-calendars/'
          },
          {
            from: '/cal/frama-agenda',
            to: 'https://framagenda.org/remote.php/dav/public-calendars/'
          }
        ],
        port: 5000
      }),

    // Watch the `public` directory and refresh the
    // browser on changes when not in production
    !production && livereload('public'),

    // If we're building for production (npm run build
    // instead of npm run dev), minify
    production && terser()
  ],
  watch: {
    clearScreen: false
  }
}