import { wordExists, getHomonymnIndexes } from "./utilities";

export function parseReferences(detailsMarkdown) {
  const references = detailsMarkdown.match(/\{\{.+?\}\}/g);
  if (references && Array.isArray(references)) {
    new Set(references).forEach(reference => {
      let wordToFind = reference.replace(/\{\{|\}\}/g, '');
      let homonymn = 0;
      
      if (wordToFind.includes(':')) {
        const separator = wordToFind.indexOf(':');
        homonymn = wordToFind.substr(separator + 1);
        wordToFind = wordToFind.substring(0, separator);
        if (homonymn && homonymn.trim()
          && !isNaN(parseInt(homonymn.trim())) && parseInt(homonymn.trim()) > 0) {
          homonymn = parseInt(homonymn.trim());
        } else {
          homonymn = false;
        }
      }

      let existingWordId = false;
      const homonymnIndexes = getHomonymnIndexes({ name: wordToFind, wordId: -1 });

      if (homonymn !== false && homonymn > 0) {
        if (typeof homonymnIndexes[homonymn - 1] !== 'undefined') {
          existingWordId = window.currentDictionary.words[homonymnIndexes[homonymn - 1]].wordId;
        }
      } else if (homonymn !== false) {
        existingWordId = wordExists(wordToFind, true);
      }

      if (existingWordId !== false) {
        if (homonymn < 1 && homonymnIndexes.length > 0) {
          homonymn = 1;
        }
        const homonymnSubHTML = homonymn > 0 ? '<sub>' + homonymn.toString() + '</sub>' : '';
        const wordMarkdownLink = `[${wordToFind}${homonymnSubHTML}](#${existingWordId})`;
        detailsMarkdown = detailsMarkdown.replace(new RegExp(reference, 'g'), wordMarkdownLink);
      }
    });
  }
  return detailsMarkdown;
}