// Comments

var comment_template = false;

function ajaxComments(parms) {

  setAjaxLoading();

  var pid = strToPageID(title);

  if(!parms)

  {

    var parms = {

      'mode' : 'fetch'

    };

  }

  parms.page_id = pid[0];

  parms.namespace = pid[1];

  if(comment_template)

    parms.have_template = true;

  parms = ajaxEscape(toJSONString(parms));

  ajaxPost(stdAjaxPrefix+'&_mode=comments', 'data=' + parms, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      selectButtonMajor('discussion');

      unselectAllButtonsMinor();

      // IE compatibility - doing ajax.responseText.substr() doesn't work

      var rsptxt = ajax.responseText + '';

      if ( rsptxt.substr(0, 1) != '{' )

      {

        document.getElementById('ajaxEditContainer').innerHTML = '<p>Comment system Javascript runtime: invalid JSON response from server, response text:</p><pre>' + ajax.responseText + '</pre>';

        return false;

      }

      var response = parseJSON(ajax.responseText);

      switch(response.mode)

      {

        case 'fetch':

          document.getElementById('ajaxEditContainer').innerHTML = 'Rendering response...';

          if(response.template)

            comment_template = response.template;

          setAjaxLoading();

          renderComments(response);

          unsetAjaxLoading();

          break;

        case 'redraw':

          redrawComment(response);

          break;

        case 'annihilate':

          annihiliateComment(response.id);

          break;

        case 'materialize':

          alert('Your comment has been posted. If it does not appear right away, it is probably awaiting approval.');

          hideCommentForm();

          materializeComment(response);

          break;

        case 'error':

          alert(response.error);

          break;

        default:

          alert(ajax.responseText);

          break;

      }

    }

  });

}

function renderComments(data)

{

  var html = '';

  // Header

    html += '<h3>Article Comments</h3>';

    var ns = ( strToPageID(title)[1]=='Article' ) ? 'article' : ( strToPageID(title)[1].toLowerCase() ) + ' page';

    // Counters

    if ( data.auth_mod_comments )

    {

      var cnt = ( data.auth_mod_comments ) ? data.count_total : data.count_appr;

      if ( cnt == 0 ) cnt = 'no';

      var s  = ( cnt == 1 ) ? '' : 's';

      var is = ( cnt == 1 ) ? 'is' : 'are';

      html += "<p id=\"comment_status\">There "+is+" " + cnt + " comment"+s+" on this "+ns+".";

      if ( data.count_unappr > 0 )

      {

        html += ' <span style="color: #D84308">' + data.count_unappr + ' of those are unapproved.</span>';

      }

      html += '</p>';

    }

    else

    {

      var cnt = data.count_appr;

      if ( cnt == 0 ) cnt = 'no';

      var s  = ( cnt == 1 ) ? '' : 's';

      var is = ( cnt == 1 ) ? 'is' : 'are';

      html += "<p id=\"comment_status\">There "+is+" " + cnt + " comment"+s+" on this "+ns+".";

      if ( data.count_unappr > 0 )

      {

        var s  = ( data.count_unappr == 1 ) ? '' : 's';

        var is = ( data.count_unappr == 1 ) ? 'is' : 'are';

        html += ' However, there '+is+' '+data.count_unappr+' additional comment'+s+' awaiting approval.';

      }

      html += '</p>';

    }

  // Comment display

  if ( data.count_total > 0 )

  {

    var parser = new templateParser(comment_template);

    for ( var i = 0; i < data.comments.length; i++ )

    {

      var tplvars = new Object();

      if ( data.comments[i].approved != '1' && !data.auth_mod_comments )

        continue;

      tplvars.ID = i;

      tplvars.DATETIME = data.comments[i].time;

      tplvars.SUBJECT = data.comments[i].subject;

      tplvars.DATA = data.comments[i].comment_data;

      tplvars.SIGNATURE = data.comments[i].signature;

      if ( data.comments[i].approved != '1' )

        tplvars.SUBJECT += ' <span style="color: #D84308">(Unapproved)</span>';

      // Name

      tplvars.NAME = data.comments[i].name;

      if ( data.comments[i].user_id > 1 )

        tplvars.NAME = '<a href="' + makeUrlNS('User', data.comments[i].name) + '">' + data.comments[i].name + '</a>';

      // User level

      tplvars.USER_LEVEL = 'Guest';

      if ( data.comments[i].user_level >= data.user_level.member ) tplvars.USER_LEVEL = 'Member';

      if ( data.comments[i].user_level >= data.user_level.mod ) tplvars.USER_LEVEL = 'Moderator';

      if ( data.comments[i].user_level >= data.user_level.admin ) tplvars.USER_LEVEL = 'Administrator';

      // Send PM link

      tplvars.SEND_PM_LINK=(data.comments[i].user_id>1)?'<a onclick="window.open(this.href); return false;" href="'+ makeUrlNS('Special', 'PrivateMessages/Compose/To/' + ( data.comments[i].name.replace(/ /g, '_') )) +'">Send private message</a><br />':'';

      // Add buddy link

      tplvars.ADD_BUDDY_LINK=(data.comments[i].user_id>1)?'<a onclick="window.open(this.href); return false;" href="'+ makeUrlNS('Special', 'PrivateMessages/FriendList/Add/' + ( data.comments[i].name.replace(/ /g, '_') )) +'">Add to buddy list</a><br />':'';

      // Edit link

      tplvars.EDIT_LINK='<a href="#edit_'+i+'" onclick="editComment(\''+i+'\', this); return false;" id="cmteditlink_'+i+'">edit</a>';

      // Delete link

      tplvars.DELETE_LINK='<a href="#delete_'+i+'" onclick="deleteComment(\''+i+'\'); return false;">delete</a>';

      // Moderation: (Un)approve link

      var appr = ( data.comments[i].approved == 1 ) ? 'Unapprove' : 'Approve';

      tplvars.MOD_APPROVE_LINK='<a href="#approve_'+i+'" id="comment_approve_'+i+'" onclick="approveComment(\''+i+'\'); return false;">'+appr+'</a>';

      // Moderation: Delete post link

      tplvars.MOD_DELETE_LINK='<a href="#mod_del_'+i+'" onclick="deleteComment(\''+i+'\'); return false;">Delete</a>';

      var tplbool = new Object();

      tplbool.signature = ( data.comments[i].signature == '' ) ? false : true;

      tplbool.can_edit = ( data.auth_edit_comments && ( ( data.comments[i].user_id == data.user_id && data.logged_in ) || data.auth_mod_comments ) );

      tplbool.auth_mod = data.auth_mod_comments;

      parser.assign_vars(tplvars);

      parser.assign_bool(tplbool);

      html += '<div id="comment_holder_' + i + '"><input type="hidden" value="'+data.comments[i].comment_id+'" /><input type="hidden" id="comment_source_'+i+'" />' + parser.run() + '</div>';

    }

  }

  // Posting form

    html += '<h3>Got something to say?</h3>';

    html += '<p>If you have comments or suggestions on this article, you can shout it out here.';

    if ( data.approval_needed )

      html+=' Before your post will be visible to the public, a moderator will have to approve it.';

    html += ' <a id="leave_comment_button" href="#" onclick="displayCommentForm(); return false;">Leave a comment...</a></p>';

    html += '<div id="comment_form" style="display: none;">';

    html += '  <table border="0">';

    html += '    <tr><td>Your name/screen name:</td><td>';

    if ( data.user_id > 1 ) html += data.username + '<input id="commentform_name" type="hidden" value="'+data.username+'" size="40" />';

    else html += '<input id="commentform_name" type="text" size="40" />';

    html += '    </td></tr>';

    html += '    <tr><td>Comment subject:</td><td><input id="commentform_subject" type="text" size="40" /></td></tr>';

    html += '    <tr><td>Comment:</td><td><textarea id="commentform_message" rows="15" cols="50"></textarea></td></tr>';

    if ( !data.logged_in && data.guest_posting == '1' )

    {

      html += '  <tr><td>Visual confirmation:<br /><small>Please enter the confirmation code seen in the image on the right into the box. If you cannot read the code, please click on the image to generate a new one. This helps to prevent automated bot posting.</small></td><td>';

      html += '  <img alt="CAPTCHA image" src="'+makeUrlNS('Special', 'Captcha/' + data.captcha)+'" onclick="this.src=\''+makeUrlNS('Special', 'Captcha/' + data.captcha)+'/\'+Math.floor(Math.random()*10000000);" style="cursor: pointer;" /><br />';

      html += '  Confirmation code: <input type="text" size="8" id="commentform_captcha" />';

      html += '  <!-- This input is used to track the ID of the CAPTCHA image --> <input type="hidden" id="commentform_captcha_id" value="'+data.captcha+'" />';

      html += '  </td></tr>';

    }

    html += '    <tr><td colspan="2" style="text-align: center;"><input type="button" onclick="submitComment();" value="Submit comment" /></td></tr>';

    html += '  </table>';

    html += '</div>';

  document.getElementById('ajaxEditContainer').innerHTML = html;

  for ( i = 0; i < data.comments.length; i++ )

  {

    document.getElementById('comment_source_'+i).value = data.comments[i].comment_source;

  }

}

function displayCommentForm()

{

  document.getElementById('leave_comment_button').style.display = 'none';

  document.getElementById('comment_form').style.display = 'block';

}

function hideCommentForm()

{

  document.getElementById('leave_comment_button').style.display = 'inline';

  document.getElementById('comment_form').style.display = 'none';

}

function editComment(id, link)

{

  var ctr = document.getElementById('subject_'+id);

  var subj = trim(ctr.firstChild.nodeValue); // If there's a span in there that says 'unapproved', this eliminates it

  ctr.innerHTML = '';

  var ipt = document.createElement('input');

  ipt.id = 'subject_edit_'+id;

  ipt.value = subj;

  ctr.appendChild(ipt);

  var src = document.getElementById('comment_source_'+id).value;

  var cmt = document.getElementById('comment_'+id);

  cmt.innerHTML = '';

  var ta = document.createElement('textarea');

  ta.rows = '10';

  ta.cols = '40';

  ta.value = src;

  ta.id = 'comment_edit_'+id;

  cmt.appendChild(ta);

  link.style.fontWeight = 'bold';

  link.innerHTML = 'save';

  link.onclick = function() { var id = this.id.substr(this.id.indexOf('_')+1); saveComment(id, this); return false; };

}

function saveComment(id, link)

{

  var data = document.getElementById('comment_edit_'+id).value;

  var subj = document.getElementById('subject_edit_'+id).value;

  var div = document.getElementById('comment_holder_'+id);

  var real_id = div.getElementsByTagName('input')[0]['value'];

  var req = {

    'mode' : 'edit',

    'id'   : real_id,

    'local_id' : id,

    'data' : data,

    'subj' : subj

  };

  link.style.fontWeight = 'normal';

  link.innerHTML = 'edit';

  link.onclick = function() { var id = this.id.substr(this.id.indexOf('_')+1); editComment(id, this); return false; };

  ajaxComments(req);

}

function deleteComment(id)

{

  //var c = confirm('Do you really want to delete this comment?');

  //if(!c);

  //  return false;

  var div = document.getElementById('comment_holder_'+id);

  var real_id = div.getElementsByTagName('input')[0]['value'];

  var req = {

    'mode' : 'delete',

    'id'   : real_id,

    'local_id' : id

  };

  ajaxComments(req);

}

function submitComment()

{

  var name = document.getElementById('commentform_name').value;

  var subj = document.getElementById('commentform_subject').value;

  var text = document.getElementById('commentform_message').value;

  if ( document.getElementById('commentform_captcha') )

  {

    var captcha_code = document.getElementById('commentform_captcha').value;

    var captcha_id   = document.getElementById('commentform_captcha_id').value;

  }

  else

  {

    var captcha_code = '';

    var captcha_id   = '';

  }

  var req = {

    'mode' : 'submit',

    'name' : name,

    'subj' : subj,

    'text' : text,

    'captcha_code' : captcha_code,

    'captcha_id'   : captcha_id

  };

  ajaxComments(req);

}

function redrawComment(data)

{

  if ( data.subj )

  {

    document.getElementById('subject_' + data.id).innerHTML = data.subj;

  }

  if ( data.approved && data.approved != '1' )

  {

    document.getElementById('subject_' + data.id).innerHTML += ' <span style="color: #D84308">(Unapproved)</span>';

  }

  if ( data.approved )

  {

    var appr = ( data.approved == '1' ) ? 'Unapprove' : 'Approve';

    document.getElementById('comment_approve_'+data.id).innerHTML = appr;

    var p = document.getElementById('comment_status');

    var count = p.firstChild.nodeValue.split(' ')[2];

    if ( p.firstChild.nextSibling )

    {

      var span = p.firstChild.nextSibling;

      var is = ( data.approved == '1' ) ? -1 : 1;

      var n_unapp = parseInt(span.firstChild.nodeValue.split(' ')[0]) + is;

      n_unapp = n_unapp + '';

    }

    else

    {

      var span = document.createElement('span');

      p.innerHTML += ' ';

      span.innerHTML = ' ';

      span.style.color = '#D84308';

      var n_unapp = '1';

      p.appendChild(span);

    }

    span.innerHTML = n_unapp + ' of those are unapproved.';

    if ( n_unapp == '0' )

      p.removeChild(span);

  }

  if ( data.text )

  {

    document.getElementById('comment_' + data.id).innerHTML = data.text;

  }

  if ( data.src )

  {

    document.getElementById('comment_source_' + data.id).value = data.src;

  }

}

function approveComment(id)

{

  var div = document.getElementById('comment_holder_'+id);

  var real_id = div.getElementsByTagName('input')[0]['value'];

  var req = {

    'mode' : 'approve',

    'id'   : real_id,

    'local_id' : id

  };

  ajaxComments(req);

}

// Does the actual DOM object removal

function annihiliateComment(id) // Did I spell that right?

{

  // Approved?

  var p = document.getElementById('comment_status');

  if(document.getElementById('comment_approve_'+id))

  {

    var appr = document.getElementById('comment_approve_'+id).firstChild.nodeValue;

    if ( p.firstChild.nextSibling && appr == 'Approve' )

    {

      var span = p.firstChild.nextSibling;

      var t = span.firstChild.nodeValue;

      var n_unapp = ( parseInt(t.split(' ')[0]) ) - 1;

      if ( n_unapp == 0 )

        p.removeChild(span);

      else

        span.firstChild.nodeValue = n_unapp + t.substr(t.indexOf(' '));

    }

  }

  var div = document.getElementById('comment_holder_'+id);

  div.parentNode.removeChild(div);

  var t = p.firstChild.nodeValue.split(' ');

  t[2] = ( parseInt(t[2]) - 1 ) + '';

  delete(t.toJSONString);

  if ( t[2] == '1' )

  {

    t[1] = 'is';

    t[3] = 'comment';

  }

  else

  {

    t[1] = 'are';

    t[3] = 'comments';

  }

  t = implode(' ', t);

  p.firstChild.nodeValue = t;

}

function materializeComment(data)

{

  // Intelligently get an ID

  var i = 0;

  var brother;

  while ( true )

  {

    var x = document.getElementById('comment_holder_'+i);

    if(!x)

      break;

    brother = x;

    i++;

  }

  var parser = new templateParser(comment_template);

  var tplvars = new Object();

  if ( data.approved != '1' && !data.auth_mod_comments )

    return false;

  tplvars.ID = i;

  tplvars.DATETIME = data.time;

  tplvars.SUBJECT = data.subject;

  tplvars.DATA = data.comment_data;

  tplvars.SIGNATURE = data.signature;

  tplvars.NAME = data.name;

  if ( data.user_id > 1 )

    tplvars.NAME = '<a href="' + makeUrlNS('User', data.name) + '">' + data.name + '</a>';

  if ( data.approved != '1' )

    tplvars.SUBJECT += ' <span style="color: #D84308">(Unapproved)</span>';

  // User level

  tplvars.USER_LEVEL = 'Guest';

  if ( data.user_level >= data.user_level_list.member ) tplvars.USER_LEVEL = 'Member';

  if ( data.user_level >= data.user_level_list.mod ) tplvars.USER_LEVEL = 'Moderator';

  if ( data.user_level >= data.user_level_list.admin ) tplvars.USER_LEVEL = 'Administrator';

  // Send PM link

  tplvars.SEND_PM_LINK=(data.user_id>1)?'<a onclick="window.open(this.href); return false;" href="'+ makeUrlNS('Special', 'PrivateMessages/Compose/To/' + ( data.name.replace(/ /g, '_') )) +'">Send private message</a><br />':'';

  // Add buddy link

  tplvars.ADD_BUDDY_LINK=(data.user_id>1)?'<a onclick="window.open(this.href); return false;" href="'+ makeUrlNS('Special', 'PrivateMessages/FriendList/Add/' + ( data.name.replace(/ /g, '_') )) +'">Add to buddy list</a><br />':'';

  // Edit link

  tplvars.EDIT_LINK='<a href="#edit_'+i+'" onclick="editComment(\''+i+'\', this); return false;" id="cmteditlink_'+i+'">edit</a>';

  // Delete link

  tplvars.DELETE_LINK='<a href="#delete_'+i+'" onclick="deleteComment(\''+i+'\'); return false;">delete</a>';

  // Moderation: (Un)approve link

  var appr = ( data.approved == 1 ) ? 'Unapprove' : 'Approve';

  tplvars.MOD_APPROVE_LINK='<a href="#approve_'+i+'" id="comment_approve_'+i+'" onclick="approveComment(\''+i+'\'); return false;">'+appr+'</a>';

  // Moderation: Delete post link

  tplvars.MOD_DELETE_LINK='<a href="#mod_del_'+i+'" onclick="deleteComment(\''+i+'\'); return false;">Delete</a>';

  var tplbool = new Object();

  tplbool.signature = ( data.signature == '' ) ? false : true;

  tplbool.can_edit = ( data.auth_edit_comments && ( ( data.user_id == data.user_id && data.logged_in ) || data.auth_mod_comments ) );

  tplbool.auth_mod = data.auth_mod_comments;

  parser.assign_vars(tplvars);

  parser.assign_bool(tplbool);

  var div = document.createElement('div');

  div.id = 'comment_holder_'+i;

  div.innerHTML = '<input type="hidden" value="'+data.comment_id+'" /><input type="hidden" id="comment_source_'+i+'" />' + parser.run();

  if ( brother )

  {

    brother.parentNode.insertBefore(div, brother.nextSibling);

  }

  else

  {

    // No comments in ajaxEditContainer, insert it after the header

    var aec = document.getElementById("ajaxEditContainer");

    aec.insertBefore(div, aec.firstChild.nextSibling.nextSibling);

  }

  document.getElementById('comment_source_'+i).value = data.comment_source;

  var p = document.getElementById('comment_status');

  var t = p.firstChild.nodeValue.split(' ');

  var n = ( isNaN(parseInt(t[2])) ) ? 0 : parseInt(t[2]);

  t[2] = ( n + 1 ) + '';

  delete(t.toJSONString);

  if ( t[2] == '1' )

  {

    t[1] = 'is';

    t[3] = 'comment';

  }

  else

  {

    t[1] = 'are';

    t[3] = 'comments';

  }

  t = implode(' ', t);

  p.firstChild.nodeValue = t;

  if(document.getElementById('comment_approve_'+i))

  {

    var appr = document.getElementById('comment_approve_'+i).firstChild.nodeValue;

    if ( p.firstChild.nextSibling && appr == 'Approve' )

    {

      var span = p.firstChild.nextSibling;

      var t = span.firstChild.nodeValue;

      var n_unapp = ( parseInt(t.split(' ')[0]) ) - 1;

      if ( n_unapp == 0 )

        p.removeChild(span);

      else

        span.firstChild.nodeValue = n_unapp + t.substr(t.indexOf(' '));

    }

    else if ( appr == 'Approve' && !p.firstChild.nextSibling )

    {

      var span = document.createElement('span');

      p.innerHTML += ' ';

      span.innerHTML = '1 of those are unapproved.';

      span.style.color = '#D84308';

      var n_unapp = '1';

      p.appendChild(span);

    }

  }

}