// Comments

var comment_template = false;

var comment_render_track = 0;

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 = '<div class="wait-box">Rendering '+response.count_total+' comments...</div>';

          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($lang.get('comment_msg_comment_posted'));

          hideCommentForm();

          materializeComment(response);

          break;

        case 'error':

          new messagebox(MB_OK|MB_ICONSTOP, ( response.title ? response.title : 'Error fetching comment data' ), response.error);

          break;

        default:

          alert(ajax.responseText);

          break;

      }

    }

  });

}

function renderComments(data)

{

  var html = '';

  // Header

    html += '<h3>' + $lang.get('comment_heading') + '</h3>';

    var ns = ENANO_PAGE_TYPE;

    // Counters

    if ( data.auth_mod_comments )

    {

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

      var subst = {

        num_comments: cnt,

        page_type: ns

      }

      var count_msg = ( cnt == 0 ) ? $lang.get('comment_msg_count_zero', subst) : ( ( cnt == 1 ) ? $lang.get('comment_msg_count_one', subst) : $lang.get('comment_msg_count_plural', subst) );

      html += "<p id=\"comment_status\"><span>" + count_msg + '</span>';

      if ( data.count_unappr > 0 )

      {

        html += ' <span style="color: #D84308" id="comment_status_unapp">' + $lang.get('comment_msg_count_unapp_mod', { num_unapp: data.count_unappr }) + '</span>';

      }

      html += '</p>';

    }

    else

    {

      var cnt = data.count_appr;

      var subst = {

        num_comments: cnt,

        page_type: ns

      }

      var count_msg = ( cnt == 0 ) ? $lang.get('comment_msg_count_zero', subst) : ( ( cnt == 1 ) ? $lang.get('comment_msg_count_one', subst) : $lang.get('comment_msg_count_plural', subst) );

      html += "<p id=\"comment_status\">" + count_msg;

      if ( data.count_unappr > 0 )

      {

        var unappr_msg  = ( data.count_unappr == 1 ) ? $lang.get('comment_msg_count_unapp_one') : $lang.get('comment_msg_count_unapp_plural', { num_unapp: data.count_unappr });

        html += ' ' + unappr_msg;

      }

      html += '</p>';

    }

  // Comment display

  if ( data.count_total > 0 )

  {

    comment_render_track = 0;

    var commentpages = new paginator(data.comments, _render_comment, 0, 10, data);

    html += commentpages.html;

  }

  if ( data.auth_post_comments )

  {

    // Posting form

    html += '<h3>' + $lang.get('comment_postform_title') + '</h3>';

    html += '<p>' + $lang.get('comment_postform_blurb');

    if ( data.approval_needed )

      html+=' ' + $lang.get('comment_postform_blurb_unapp');

    html += ' <a id="leave_comment_button" href="#" onclick="displayCommentForm(); return false;">' + $lang.get('comment_postform_blurb_link') + '</a></p>';

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

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

    html += '    <tr><td>' + $lang.get('comment_postform_field_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>' + $lang.get('comment_postform_field_subject') + '</td><td><input id="commentform_subject" type="text" size="40" /></td></tr>';

    html += '    <tr><td>' + $lang.get('comment_postform_field_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>' + $lang.get('comment_postform_field_captcha_title') + '<br /><small>' + $lang.get('comment_postform_field_captcha_blurb') + '</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 += '  ' + $lang.get('comment_postform_field_captcha_label') + ' <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="' + $lang.get('comment_postform_btn_submit') + '" /></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;

  }

}

var _render_comment = function(this_comment, data)

{

  var i = comment_render_track;

  comment_render_track++;

  var parser = new templateParser(comment_template);

  var tplvars = new Object();

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

    return '';

  tplvars.ID = i;

  tplvars.DATETIME = this_comment.time;

  tplvars.SUBJECT = this_comment.subject;

  tplvars.DATA = this_comment.comment_data;

  tplvars.SIGNATURE = this_comment.signature;

  if ( this_comment.approved != '1' )

    tplvars.SUBJECT += ' <span style="color: #D84308">' + $lang.get('comment_msg_note_unapp') + '</span>';

  // Name

  tplvars.NAME = this_comment.name;

  if ( this_comment.user_id > 1 )

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

  // Avatar

  if ( this_comment.user_has_avatar == '1' )

  {

    tplvars.AVATAR_URL = scriptPath + '/' + data.avatar_directory + '/' + this_comment.user_id + '.' + this_comment.avatar_type;

    tplvars.USERPAGE_LINK = makeUrlNS('User', this_comment.name);

    tplvars.AVATAR_ALT = $lang.get('usercp_avatar_image_alt', { username: this_comment.name });

  }

  // User level

  tplvars.USER_LEVEL = $lang.get('user_type_guest');

  if ( this_comment.user_level >= data.user_level.member ) tplvars.USER_LEVEL = $lang.get('user_type_member');

  if ( this_comment.user_level >= data.user_level.mod ) tplvars.USER_LEVEL = $lang.get('user_type_mod');

  if ( this_comment.user_level >= data.user_level.admin ) tplvars.USER_LEVEL = $lang.get('user_type_admin');

  // Send PM link

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

  // Add buddy link

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

  // Edit link

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

  // Delete link

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

  // Moderation: (Un)approve link

  var appr = ( this_comment.approved == 1 ) ? $lang.get('comment_btn_mod_unapprove') : $lang.get('comment_btn_mod_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;">' + $lang.get('comment_btn_mod_delete') + '</a>';

  var tplbool = new Object();

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

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

  tplbool.auth_mod = data.auth_mod_comments;

  tplbool.is_friend = ( this_comment.is_buddy == 1 && this_comment.is_friend == 1 );

  tplbool.is_foe = ( this_comment.is_buddy == 1 && this_comment.is_friend == 0 );

  tplbool.user_has_avatar = ( this_comment.user_has_avatar == '1' );

  if ( tplbool.is_friend )

    tplvars.USER_LEVEL += '<br /><b>' + $lang.get('comment_on_friend_list') + '</b>';

  else if ( tplbool.is_foe )

    tplvars.USER_LEVEL += '<br /><b>' + $lang.get('comment_on_foe_list') + '</b>';

  parser.assign_vars(tplvars);

  parser.assign_bool(tplbool);

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

}

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 = ( ctr.firstChild ) ? 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 = $lang.get('comment_btn_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 = $lang.get('comment_btn_edit');

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

  ajaxComments(req);

}

function deleteComment(id)

{

  if ( !shift )

  {

    var c = confirm($lang.get('comment_msg_delete_confirm'));

    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   = '';

  }

  if ( subj == '' )

  {

    new messagebox(MB_OK|MB_ICONSTOP, 'Input validation failed', 'Please enter a subject for your comment.');

    return false;

  }

  if ( text == '' )

  {

    new messagebox(MB_OK|MB_ICONSTOP, 'Input validation failed', 'Please enter some text for the body of your comment .');

    return false;

  }

  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">' + $lang.get('comment_msg_note_unapp') + '</span>';

  }

  if ( data.approved && ( typeof(data.approve_updated) == 'string' && data.approve_updated == 'yes' ) )

  {

    var appr = ( data.approved == '1' ) ? $lang.get('comment_btn_mod_unapprove') : $lang.get('comment_btn_mod_approve');

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

    if ( data.approved == '1' )

      comment_decrement_unapproval();

    else

      comment_increment_unapproval();

  }

  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?

{

  var approved = true;

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

  {

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

    if ( appr == $lang.get('comment_btn_mod_approve') )

    {

      approved = false;

    }

  }

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

  div.parentNode.removeChild(div);

  // update approval status

  if ( document.getElementById('comment_count_unapp_inner') && !approved )

  {

    comment_decrement_unapproval();

  }

}

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">' + $lang.get('comment_msg_note_unapp') + '</span>';

  // User level

  tplvars.USER_LEVEL = $lang.get('user_type_guest');

  if ( data.user_level >= data.user_level_list.member ) tplvars.USER_LEVEL = $lang.get('user_type_member');

  if ( data.user_level >= data.user_level_list.mod ) tplvars.USER_LEVEL = $lang.get('user_type_mod');

  if ( data.user_level >= data.user_level_list.admin ) tplvars.USER_LEVEL = $lang.get('user_type_admin');

  // Avatar

  if ( data.user_has_avatar == '1' )

  {

    tplvars.AVATAR_URL = scriptPath + '/' + data.avatar_directory + '/' + data.user_id + '.' + data.avatar_type;

    tplvars.USERPAGE_LINK = makeUrlNS('User', data.name);

    tplvars.AVATAR_ALT = $lang.get('usercp_avatar_image_alt', { username: data.name });

  }

  // 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, '_') )) +'">' + $lang.get('comment_btn_send_privmsg') + '</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, '_') )) +'">' + $lang.get('comment_btn_add_buddy') + '</a><br />':'';

  // Edit link

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

  // Delete link

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

  // Moderation: (Un)approve link

  var appr = ( data.approved == 1 ) ? $lang.get('comment_btn_mod_unapprove') : $lang.get('comment_btn_mod_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;">' + $lang.get('comment_btn_mod_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;

  tplbool.user_has_avatar = ( data.user_has_avatar == '1' );

  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);

  }