import { Process, BlockHandler } from '../blockHandlers';
import { BlockNode } from '../node';
import { reFrontMatter } from './frontMatterStart';

export const frontMatter: BlockHandler = {
  continue(parser, container: BlockNode) {
    const line = parser.currentLine;
    const match = line.match(reFrontMatter);

    if (container.type === 'frontMatter' && match) {
      container.stringContent += line;
      parser.lastLineLength = match[0].length;
      parser.finalize(container as BlockNode, parser.lineNumber);
      return Process.Finished;
    }
    return Process.Go;
  },
  finalize(_, block: BlockNode) {
    if (block.stringContent === null) {
      return;
    }
    block.literal = block.stringContent;
    block.stringContent = null;
  },
  canContain() {
    return false;
  },
  acceptsLines: true,
};