const { addError, getLineMetadata, getReferenceLinkImageData } = require('markdownlint/helpers');

module.exports = {
  names: ['EMD001', 'no-shortcut-reference-links'],
  description:
    'Disallow shortcut reference links (those with no link label)',
  tags: ['images', 'links'],
  function: function EMD001 (params, onError) {
    const lineMetadata = getLineMetadata(params);
    const { shortcuts } = getReferenceLinkImageData(lineMetadata);
    for (const [shortcut, occurrences] of shortcuts) {
      for (const [lineNumber] of occurrences) {
        addError(
          onError,
          lineNumber + 1, // human-friendly line numbers (1-based)
          `Disallowed shortcut reference link: "${shortcut}"`
        );
      }
    }
  }
};