BibTest.js: Difference between revisions

Revision as of 22:50, 21 May 2026

/**
 * Bibliography Tag Filter, Sorting and Search
 */

(function() {
  'use strict';

  let ACTIVE_TAGS = new Set();
  let SEARCH_TERM = '';

  function init() {
    const tagBar = document.getElementById('tagBar');
    const bibliography = document.getElementById('listView');
    const searchInput = document.getElementById('bibSearch');
    
    if (!tagBar || !bibliography) return;

    // Verstecke leere Abstract- und Notes-Buttons
    hideEmptyAbstracts();
    hideEmptyNotes();

    // Sammle alle Original-Taggamen aus den Einträgen
    const allTagsMap = new Map();
    document.querySelectorAll('.bib-entry .tag').forEach(tagEl => {
      const originalName = tagEl.textContent.trim();
      const normalized = normalizeTag(originalName);
      allTagsMap.set(normalized, originalName);
    });

    // Lösche alte Tags aus tagBar (aber nur einmal!)
    if (tagBar.children.length === 0) {
      Array.from(allTagsMap.entries())
        .sort((a, b) => a[1].localeCompare(b[1]))
        .forEach(([normalized, originalName]) => {
          const span = document.createElement('span');
          span.className = 'tag inactive';
          span.textContent = originalName;
          span.dataset.normalized = normalized;
          span.onclick = () => toggleTag(originalName, span, normalized);
          tagBar.appendChild(span);
        });
    }

    // Search Input Listener
    if (searchInput && !searchInput.dataset.listenerSet) {
      searchInput.addEventListener('input', (e) => {
        SEARCH_TERM = e.target.value.toLowerCase();
        filterEntries();
      });
      searchInput.dataset.listenerSet = 'true';
    }

    sortEntries();
    setupClickHandlers();
  }

  function hideEmptyAbstracts() {
    document.querySelectorAll('.bib-entry').forEach(entry => {
      const abstractDiv = entry.querySelector('.abstract');
      const expandBtn = entry.querySelector('.expand-btn');
      
      if (!abstractDiv || !expandBtn) return;
      
      const p = abstractDiv.querySelector('p');
      const abstractText = p ? p.textContent.trim() : '';
      
      if (!abstractText || abstractText === 'No abstract available.') {
        expandBtn.style.display = 'none';
        abstractDiv.classList.add('hidden');
      } else {
        expandBtn.style.display = 'block';
        abstractDiv.classList.remove('hidden');
      }
    });
  }

  function hideEmptyNotes() {
    document.querySelectorAll('.bib-entry').forEach(entry => {
      const notesDiv = entry.querySelector('.notes');
      const notesBtn = entry.querySelector('.expand-btn-notes');
      
      if (!notesDiv || !notesBtn) return;
      
      const p = notesDiv.querySelector('p');
      const notesText = p ? p.textContent.trim() : '';
      
      if (!notesText) {
        notesBtn.style.display = 'none';
        notesDiv.classList.add('hidden');
      } else {
        notesBtn.style.display = 'block';
        notesDiv.classList.add('hidden'); // Startet mit hidden!
      }
    });
  }

  function setupClickHandlers() {
    document.removeEventListener('click', handleClicks);
    document.addEventListener('click', handleClicks);
  }

  function handleClicks(e) {
    // Abstract Button
    if (e.target.classList.contains('expand-btn') && !e.target.classList.contains('expand-btn-notes')) {
      const entry = e.target.closest('.bib-entry');
      const abstractDiv = entry.querySelector('.abstract');
      
      if (abstractDiv) {
        abstractDiv.classList.toggle('hidden');
        e.target.textContent = abstractDiv.classList.contains('hidden')
          ? 'Show Abstract'
          : 'Hide Abstract';
      }
    }
    
    // Notes Button
    if (e.target.classList.contains('expand-btn-notes')) {
      const entry = e.target.closest('.bib-entry');
      const notesDiv = entry.querySelector('.notes');
      
      if (notesDiv) {
        notesDiv.classList.toggle('hidden');
        e.target.textContent = notesDiv.classList.contains('hidden')
          ? 'Show Notes'
          : 'Hide Notes';
      }
    }
  }

  function toggleTag(tagName, element, normalized) {
    if (ACTIVE_TAGS.has(normalized)) {
      ACTIVE_TAGS.delete(normalized);
      element.classList.remove('active');
      element.classList.add('inactive');
    } else {
      ACTIVE_TAGS.add(normalized);
      element.classList.add('active');
      element.classList.remove('inactive');
    }
    filterEntries();
  }

  function sortEntries() {
    const container = document.getElementById('listView');
    if (!container) return;

    const entries = Array.from(container.querySelectorAll('.bib-entry'));
    
    entries.sort((a, b) => {
      const titleA = a.querySelector('h3')?.textContent || '';
      const titleB = b.querySelector('h3')?.textContent || '';
      return titleA.localeCompare(titleB);
    });

    entries.forEach(entry => container.appendChild(entry));
  }

  function normalizeTag(tag) {
    return tag.toLowerCase().replace(/\s+/g, '_').replace(/,/g, '').replace(/\./g, '').replace(/'/g, '').replace(/"/g, '');
  }

  function matchesSearch(entry) {
    if (!SEARCH_TERM) return true;

    const searchText = SEARCH_TERM;
    
    const title = entry.querySelector('h3')?.textContent || '';
    if (title.toLowerCase().includes(searchText)) return true;

    const tagElements = entry.querySelectorAll('.tag');
    for (let tag of tagElements) {
      if (tag.textContent.toLowerCase().includes(searchText)) return true;
    }

    const abstractDiv = entry.querySelector('.abstract');
    if (abstractDiv) {
      const abstractText = abstractDiv.textContent || '';
      if (abstractText.toLowerCase().includes(searchText)) return true;
    }

    const notesDiv = entry.querySelector('.notes');
    if (notesDiv) {
      const notesText = notesDiv.textContent || '';
      if (notesText.toLowerCase().includes(searchText)) return true;
    }

    return false;
  }

  function filterEntries() {
    const entries = document.querySelectorAll('.bib-entry');
    
    entries.forEach(entry => {
      const entryTags = (entry.getAttribute('data-tags') || '').split(' ').filter(t => t);
      
      let matchesTags = true;
      if (ACTIVE_TAGS.size > 0) {
        matchesTags = Array.from(ACTIVE_TAGS).every(activeTag => {
          return entryTags.includes(activeTag);
        });
      }

      const matchesSearchTerm = matchesSearch(entry);

      entry.style.display = (matchesTags && matchesSearchTerm) ? 'block' : 'none';
    });
  }

  // Starte wenn DOM bereit
  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }

  document.addEventListener('DOMContentLoaded', init);
})();