import * as plugins from './plugins.js';
import * as paths from '../paths.js';

export class HtmlHandler {
  public defaultFromPath: string = plugins.path.join(
    paths.htmlDir,
    'index.html',
  );
  public defaultToPath: string = plugins.path.join(
    paths.distServeDir,
    'index.html',
  );

  public async checkIfExists() {
    return await plugins.fs.file(this.defaultFromPath).exists();
  }

  // copies the html
  public async processHtml(optionsArg: {
    from?: string;
    to?: string;
    minify?: boolean;
  }) {
    optionsArg = {
      ...{
        from: this.defaultFromPath,
        to: this.defaultToPath,
        minify: false,
      },
      ...optionsArg,
    };
    if (await this.checkIfExists()) {
      console.log(`${optionsArg.from} replaces file at ${optionsArg.to}`);
    }
    optionsArg.from = plugins.smartpath.transform.toAbsolute(
      optionsArg.from,
      paths.cwd,
    ) as string;
    optionsArg.to = plugins.smartpath.transform.toAbsolute(
      optionsArg.to,
      paths.cwd,
    ) as string;
    let fileString = (await plugins.fs
      .file(optionsArg.from)
      .encoding('utf8')
      .read()) as string;
    if (optionsArg.minify) {
      fileString = plugins.htmlMinifier.minify(fileString, {
        minifyCSS: true,
        minifyJS: true,
        sortAttributes: true,
        sortClassName: true,
        removeAttributeQuotes: true,
        collapseWhitespace: true,
        collapseInlineTagWhitespace: true,
        removeComments: true,
      });
    }
    const toDir = plugins.path.dirname(optionsArg.to);
    await plugins.fs.directory(toDir).create();
    await plugins.fs.file(optionsArg.to).encoding('utf8').write(fileString);
    console.log(`html processing succeeded!`);
  }
}