const webpack = require('webpack');
const chalk = require('chalk');
const config = require('../config/webpack.config');
const {clearConsole} = require('./utils');
const {errorLogger} = require('./utils');

const MAX_CHUNK_SIZE = Number(process.env.MAX_CHUNK_SIZE ?? 0);

function printAssets(assets) {
  console.log('Packaging resource list:');
  console.log();
  const list = [];
  let overstep = false;
  for (const [path, size] of Object.entries(assets)) {
    const isJs = path.lastIndexOf('.js') === path.length - 3;
    const isCss = path.lastIndexOf('.css') === path.length - 4;
    const isMedia = path.includes('static/assets');
    const sizeNum = size.size();
    const kbSize = Math.ceil(sizeNum / 1024);
    const sizePen = sizeNum > MAX_CHUNK_SIZE ? chalk.hex('#ff2121').bold : chalk.hex('#0aa344');
    const pathPen = isJs ? chalk.hex('#48c0a3') : isCss ? chalk.hex('#b0a4e3') : chalk.hex('#eacd76');
    if (isJs || isMedia || isCss) {
      if (!overstep) overstep = sizeNum > MAX_CHUNK_SIZE;

      list.push({
        path,
        size: sizeNum >= 1024 ? `${kbSize} KB` : `${sizeNum} B`,
        sizePen,
        pathPen,
      });
    }
  }
  const maxLength = list.reduce(function(pre, next) {
    return next.size.length > pre ? next.size.length : pre;
  }, 0);
  list.forEach(function({path, size, sizePen, pathPen}) {
    const afterSize = size.padEnd(maxLength + 2, ' ');
    console.log(sizePen(`Size: ${afterSize}`), pathPen(path));
  });
  if (overstep) {
    const varColor = '#177cb0';
    const pathColor = '#f00056';
    console.log();
    console.log();
    console.log(
      chalk.grey(
        `Some chunks are larger ${MAX_CHUNK_SIZE / 1024}KB after compilation. Consider:`,
      ),
    );
    console.log();
    console.log(
      chalk.hex(pathColor)(
        '1.Using dynamic import() to code-split the application',
      ),
    );
    console.log(
      chalk.hex(pathColor)('2.Adjust the prompt size by adjusting'
      + ` ${chalk.hex(varColor)('SWT_MAX_CHUNK_SIZE')}`
      + ` in ${chalk.white('packages/app/.env')}`),
    );
    console.log(
      chalk.hex(pathColor)(
        `3.Modify ${chalk.hex(varColor)('splitChunks')} in `
        + `${chalk.white('packages/webpack/config/optimization.js')}`,
      ),
    );
  }
}
try {
  const compiler = webpack(config);
  compiler.run(function(err, stats) {
    if (err) {
      errorLogger('Failed to compile');
      console.log();
      console.log(err.message);
      console.log();
      process.exit(1);
    }
    const assets = stats.compilation.assets;
    const startTime = stats.compilation.startTime;
    const endTime = stats.compilation.endTime;
    const time = endTime - startTime;
    clearConsole();
    console.log();
    console.log(chalk.green('Successfully 🤩'));
    console.log(
      chalk.gray(`Compiled successfully in ${(time / 1000).toFixed(2)}s`),
    );
    console.log();
    printAssets(assets);
    console.log();
  });
} catch (error) {
  errorLogger('Failed to compile');
  console.log();
  console.log(error.message);
  console.log();
  process.exit(1);
}