import svelte from 'rollup-plugin-svelte';
import sveltePreprocess from 'svelte-preprocess';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import livereload from 'rollup-plugin-livereload';
import {
  terser
} from 'rollup-plugin-terser';
import rust from "@wasm-tool/rollup-plugin-rust";
import typescript from 'rollup-plugin-typescript2';

const production = !process.env.ROLLUP_WATCH;

export default [{
    input: 'src/main.js',
    output: {
      sourcemap: true,
      format: 'iife',
      name: 'app',
      file: 'public/build/bundle.js'
    },
    plugins: [
      svelte({
        preprocess: sveltePreprocess(),
        // enable run-time checks when not in production
        dev: !production,
        // we'll extract any component CSS out into
        // a separate file - better for performance
        css: css => {
          css.write('bundle.css');
        }
      }),
      typescript({ sourceMap: !production }),

      // 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']
      }),
      commonjs(),
			rust({
        verbose: true,
        serverPath: "./build/"
      }),

      // In dev mode, call `npm run start` once
      // the bundle has been generated
      !production && serve(),

      // 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
    }
  },
  // {
  //   input: {
  //     foo: "../twothousand-forty-eight/Cargo.toml",
  //   },
  //   plugins: [
  //     rust(),
  //   ],
  // }
];

function serve() {
  let started = false;

  return {
    writeBundle() {
      if (!started) {
        started = true;

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