/**
 * Plugin to minimize and use ejs template syntax in index.html.
 * https://github.com/anncwb/vite-plugin-html
 */
import type { Plugin } from 'vite';

import html from 'vite-plugin-html';

import pkg from '../../../package.json';
import { GLOB_CONFIG_FILE_NAME } from '../../constant';

export function configHtmlPlugin(env: ViteEnv, isBuild: boolean) {
  const { VITE_GLOB_APP_TITLE, VITE_GLOB_PUBLIC_PATH, VITE_GLOB_CONTENT_SECURITY_POLICY } = env;

  const path = VITE_GLOB_PUBLIC_PATH.endsWith('/')
    ? VITE_GLOB_PUBLIC_PATH
    : `${VITE_GLOB_PUBLIC_PATH}/`;

  const getAppConfigSrc = () => {
    return `${path || '/'}${GLOB_CONFIG_FILE_NAME}?v=${pkg.version}-${new Date().getTime()}`;
  };

  const htmlPlugin: Plugin[] = html({
    minify: isBuild,
    inject: {
      // Inject data into ejs template
      injectData: {
        title: VITE_GLOB_APP_TITLE,
        contentSecurityPolicy: VITE_GLOB_CONTENT_SECURITY_POLICY
          ? `<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests" />`
          : '',
      },
      // Embed the generated app.config.js file
      tags: isBuild
        ? [
            {
              tag: 'script',
              attrs: {
                src: getAppConfigSrc(),
              },
            },
          ]
        : [],
    },
  });
  return htmlPlugin;
}