/* This program is free software. It comes without any warranty, to
 * the extent permitted by applicable law. You can redistribute it
 * and/or modify it under the terms of the Do What The Fuck You Want
 * To Public License, Version 2, as published by Sam Hocevar. See
 * http://sam.zoy.org/wtfpl/COPYING for more details. */

var loadForm = document.getElementById('loadForm');
loadForm.addEventListener('submit', function(e) {
  e.preventDefault();
  loadConfig();
}, true);

// Change variables here.
var type = 'user'; // could be 'group' to follow a group
var servertype ='friendica';
var user = 'marco';
var max = 5;
var tag = 'federation-widget';
var domain = 'https://freunde.ma-nic.de';
var posttime_label = 'Post time:';

// Other variables
if (servertype=='diaspora'){
    url = domain+'/public/'+user+'.atom'
} 
else if (servertype=='mastodon'){
    url = domain+'/@'+user+'.atom'
}
else {
    url = domain+'/feed/'+user;
}
    
function loadConfig()
{
    domain = document.getElementById('profile_domain').value;
    servertype = document.getElementById('server_type').value;
    user = document.getElementById('profile_name').value;
    profile_type = document.getElementById('profile_type');
    type = profile_type.options[profile_type.selectedIndex].value;
    if (servertype=='diaspora'){
        url = domain+'/public/'+user+'.atom'
    } 
    else if (servertype=='mastodon'){
        url = domain+'/@'+user+'.atom'
    }
    else {
        url = domain+'/feed/'+user;
    }
    getAtom();
}

function getAtom()
{
  if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp=new XMLHttpRequest();
  }
  else
  {// code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  xmlhttp.open("GET",url,true);
  xmlhttp.onreadystatechange = function() {
    if(xmlhttp.readyState === XMLHttpRequest.DONE) {
        try{if (xmlhttp.status=200){updateWidget(xmlhttp.responseXML)}}
            catch (e){}
        }
    }
  xmlhttp.send();
}

function updateWidget(xmlDoc){;

  if (servertype=='hubzilla'){
        userinfo=xmlDoc.getElementsByTagNameNS('http://purl.org/zot','owner')[0];
  } else{
        userinfo=xmlDoc.getElementsByTagName('author')[0];
  }

  try {
    if (servertype=='hubzilla'){
        var imagelinks=userinfo.getElementsByTagName('link');
        for (var i=0;i< imagelinks.length;i++) { 
                 if (imagelinks[i].getAttribute('rel')=='avatar'){
                     img=imagelinks[i].getAttribute('href')
                    };
                 }
    } else{
        img = xmlDoc.getElementsByTagName('logo')[0].firstChild.data;
    }   
  }
  catch (e) {
    img = '';
  }

  try {
    profile = userinfo.getElementsByTagName('uri')[0].firstChild.data;
  }
  catch (e) {
    profile = '';
  }

  try {
    displayname = userinfo.getElementsByTagNameNS('http://portablecontacts.net/spec/1.0','displayName')[0].firstChild.data
  }
  catch (e) {
    displayname = '';
  }

  //Header
  content = '<div id="federation_widget"><header>';
  if (img != '') {
    content += '<a target= "_blank" href="'+profile + '"><img src="'+img+'" title="Avatar"/></a>';
  }
  content += ' <p><a target= "_blank" href="'+profile + '">'+displayname+ '</a></p></header>';
  
  //Statuses in Array
  var items = xmlDoc.getElementsByTagName('entry');
  var max_item = max - 1

  //Read item from array
  for (var n=0; n < items.length; n++) {
    try {//Images, names and link for Group member
        var item_groupmember="",item_groupmember_screen_name="",item_groupmember_name="", item_groupmember_image="",item_groupmember_link="";
        if (type=='group'){
             var item_groupmember_screen_name = items[n].getElementsByTagName('author')[0].getElementsByTagNameNS('http://portablecontacts.net/spec/1.0','displayName')[0].firstChild.data;
             var authorlinks=items[n].getElementsByTagName('link');
             for (var i=0;i< authorlinks.length;i++) { 
                 if (authorlinks[i].getAttribute('rel')=='avatar'){
                     var item_groupmember_image=authorlinks[i].getAttribute('href')
                    };
                 }

             var item_groupmember_link = items[n].getElementsByTagName('uri')[0].firstChild.data;
             var item_groupmember = '<span class=\"groupmember\"><a class=\"tooltip\" target= \"_blank\" href=\"' + item_groupmember_link + '\"><img style=\"max-width:50px;\" alt=\"Profile\" align=\"left\" src="' + item_groupmember_image + '\" />' + item_groupmember_screen_name + ' <span>' + item_groupmember_link +'</span>  </a>     </span>';
             };            
    }
    catch (e) {
        var item_groupmember='',item_groupmember_name='',item_groupmember_image='',item_groupmember_link='';
    }

    try {//Get Status Html
        var item_content = items[n].getElementsByTagName('content')[0].firstChild.data;
    }
    catch (e) {
        var item_content = '';
    }

    
    try {//Get Create Time from status
        var item_time = '';
        item_time = new Date( items[n].getElementsByTagName('updated')[0].firstChild.data).toLocaleString();
        item_time= "<span class=\"tooltip\">&#x231B\;<span>" + posttime_label + " " + item_time +"</span> </span>";
    }
    catch (e) {
        var item_time = '';
    }
       
    //Build status string and add to timeline
    content += '<article>'+item_groupmember+item_time+"<br />" +item_content+'</article>'

    
    if ((max_item < items.length) && (n==max_item))
    {
      n = items.length;
    }
  }

  content += '<footer></footer></div>';
  document.getElementById(tag).innerHTML = content;
}

window.onload = getAtom;