/**
 * Comment moveForm for reply/edit (zibll parity) — REST-backed edit fetch.
 */
(function () {
  'use strict';

  var respondId = 'respond';
  var tempId = 'aksrt-wp-temp-form-div';
  var editingId = 0;

  function getRespond() {
    return document.getElementById(respondId);
  }

  function restRoot() {
    var d = window.aksrtData || {};
    return (d.restUrl || d.rest_url || '/wp-json/aksrt/v1').replace(/\/$/, '');
  }

  function nonce() {
    var d = window.aksrtData || {};
    return d.restNonce || d.nonce || '';
  }

  function setActionText(text) {
    var el = document.querySelector('#' + respondId + ' .action-text');
    if (!el) return;
    if (text) {
      el.style.display = '';
      el.textContent = text;
    } else {
      el.style.display = 'none';
      el.textContent = '';
    }
  }

  function ensureParentField(respond) {
    var form = respond.querySelector('#commentform') || respond;
    var parent = form.querySelector('[name="comment_parent"]');
    if (!parent) {
      parent = document.createElement('input');
      parent.type = 'hidden';
      parent.name = 'comment_parent';
      parent.id = 'comment_parent';
      parent.value = '0';
      form.appendChild(parent);
    }
    return parent;
  }

  function ensureEditField(respond, commentId) {
    var form = respond.querySelector('#commentform') || respond;
    var existing = form.querySelector('[name="edit_comment_ID"]');
    if (commentId) {
      if (!existing) {
        existing = document.createElement('input');
        existing.type = 'hidden';
        existing.name = 'edit_comment_ID';
        existing.id = 'edit_comment_ID';
        form.appendChild(existing);
      }
      existing.value = String(commentId);
      // Hide parent while editing.
      var parent = form.querySelector('[name="comment_parent"]');
      if (parent) parent.name = 'comment_parent_bak';
    } else if (existing) {
      existing.remove();
      var bak = form.querySelector('[name="comment_parent_bak"]');
      if (bak) bak.name = 'comment_parent';
    }
  }

  function moveForm(commId, parentId, isEdit) {
    var respond = getRespond();
    if (!respond) return false;
    var comm = document.getElementById(commId);
    var parent = ensureParentField(respond);
    var cancel = document.getElementById('cancel-comment-reply-link');
    var submit = respond.querySelector('#submit');
    var textarea = respond.querySelector('#comment');

    if (!document.getElementById(tempId)) {
      var temp = document.createElement('div');
      temp.id = tempId;
      temp.style.display = 'none';
      respond.parentNode.insertBefore(temp, respond);
    }

    if (comm && comm.parentNode) {
      comm.parentNode.insertBefore(respond, comm.nextSibling);
    }

    parent.value = isEdit ? '0' : String(parentId || '0');
    editingId = isEdit ? parseInt(parentId, 10) || 0 : 0;

    if (cancel) {
      cancel.style.display = '';
      cancel.onclick = function () {
        var t = document.getElementById(tempId);
        var r = getRespond();
        if (t && r && t.parentNode) {
          t.parentNode.insertBefore(r, t);
          t.parentNode.removeChild(t);
        }
        ensureEditField(r, 0);
        if (parent) parent.value = '0';
        setActionText('');
        if (textarea) textarea.value = '';
        editingId = 0;
        cancel.style.display = 'none';
        if (window.AksrtFixedInput) window.AksrtFixedInput(r, 'hide');
        else if (r) r.classList.remove('show');
        return false;
      };
    }

    if (isEdit && editingId) {
      setActionText('编辑评论');
      ensureEditField(respond, editingId);
      if (textarea) {
        textarea.disabled = true;
        textarea.value = '加载中…';
      }
      if (submit) submit.disabled = true;
      fetch(restRoot() + '/comment/get?comment_id=' + encodeURIComponent(String(editingId)), {
        headers: { 'X-WP-Nonce': nonce() },
        credentials: 'same-origin',
      })
        .then(function (r) { return r.json(); })
        .then(function (json) {
          var content = (json && (json.content || (json.data && json.data.content))) || '';
          if (textarea) {
            textarea.disabled = false;
            textarea.value = content;
            textarea.dispatchEvent(new Event('input'));
          }
          if (submit) submit.disabled = false;
        })
        .catch(function () {
          notyf('加载评论失败', 'danger');
          if (textarea) {
            textarea.disabled = false;
            textarea.value = '';
          }
          if (submit) submit.disabled = false;
        });
    } else {
      setActionText('回复评论');
      ensureEditField(respond, 0);
      if (textarea) {
        textarea.focus();
      }
    }

    if (window.AksrtFixedInput) {
      window.AksrtFixedInput(respond, 'show');
    } else {
      respond.classList.add('show');
    }

    if (comm && comm.scrollIntoView) {
      comm.scrollIntoView({ behavior: 'smooth', block: 'center' });
    }
    return false;
  }

  document.addEventListener('click', function (e) {
    var reply = e.target && e.target.closest ? e.target.closest('.comment-reply-link') : null;
    var edit = e.target && e.target.closest ? e.target.closest('.comment-edit-link, [data-comment-action="edit"]') : null;
    if (reply) {
      e.preventDefault();
      var cid = reply.getAttribute('data-commentid') || reply.getAttribute('data-comment-id') || '';
      var postid = reply.getAttribute('data-postid') || '';
      if (!cid) {
        var li = reply.closest('[data-comment-id], #comment-' + (cid || ''));
        if (li && li.getAttribute('data-comment-id')) cid = li.getAttribute('data-comment-id');
      }
      if (!cid) {
        var m = (reply.closest('li[id^="comment-"]') || {}).id || '';
        var mm = /comment-(\d+)/.exec(m);
        if (mm) cid = mm[1];
      }
      moveForm('div-comment-' + cid, cid, false);
      return;
    }
    if (edit) {
      e.preventDefault();
      var eid = edit.getAttribute('data-commentid') || edit.getAttribute('data-comment-id') || '';
      if (!eid) {
        var row = edit.closest('[data-comment-id]');
        if (row) eid = row.getAttribute('data-comment-id');
      }
      if (!eid) return;
      moveForm('div-comment-' + eid, eid, true);
    }
  });

  // Dropup toggles (guest / expand).
  document.addEventListener('click', function (e) {
    var t = e.target && e.target.closest ? e.target.closest('[data-toggle-class="open"]') : null;
    if (!t) return;
    var targetSel = t.getAttribute('data-target');
    if (!targetSel) return;
    e.preventDefault();
    var wrap = t.closest('.dropup, .input-expand-wrap, #comment-user-info') || t.parentElement;
    var panel = targetSel.charAt(0) === '#' || targetSel.charAt(0) === '.'
      ? (wrap && wrap.querySelector(targetSel)) || document.querySelector(targetSel)
      : null;
    if (wrap) wrap.classList.toggle('open');
    if (panel && panel !== wrap) panel.classList.toggle('open');
  });

  // Close dropups on outside click.
  document.addEventListener('click', function (e) {
    if (e.target.closest && e.target.closest('.dropup, .input-expand-wrap, [data-toggle-class="open"]')) return;
    document.querySelectorAll('.dropup.open, .input-expand-wrap.open, #comment-user-info.open').forEach(function (n) {
      n.classList.remove('open');
    });
  });

  // Scroll helper for @parent.
  document.addEventListener('click', function (e) {
    var a = e.target && e.target.closest ? e.target.closest('[data-scroll-to]') : null;
    if (!a) return;
    e.preventDefault();
    var sel = a.getAttribute('data-scroll-to');
    var el = sel ? document.querySelector(sel) : null;
    if (el) el.scrollIntoView({ behavior: 'smooth', block: 'center' });
  });

  window.aksrtCommentMoveForm = moveForm;
  window.aksrtGetEditingCommentId = function () { return editingId; };
})();