// Messages


function buildMsgContent(content, recips) {
    if (content.substr(0,6) == "<safe>")
        return content.substr(6,content.length - 13);
    else return linkify(escapeHtml(content), recips);
}


function invalidImageDomain(content) {
    var words = content.toLowerCase().split(' ');
    for (var i = 0; i < words.length; i++) {
        var w = words[i];
        if (PicRegex.test(w)) {
            for (var j = 0; j < InvalidDomains.length; j++) {
                var d = InvalidDomains[j];
                if (w.indexOf(d) != -1) {
                    return d;
                }
            }
        }
    }
}

function clearMessages(){
  track('UI', 'ClearScreen');
  $('.dump').remove();
}

function submitMessage() {
    var content = $.trim($('#msgInput').val());
    
    if (content == "/clear") {
        clearMessages()
        $('#msgInput').val('');
        return;
    }
    
    var invalidDomain = invalidImageDomain(content);
    if (invalidDomain) {
        $('#msgInput').blur(); // Remove focus to prevent FF alert loop
        alert("Sorry, cannot accept images from " + invalidDomain + ". Maybe host the image elsewhere?");
        return;
    }
    
    $('#msgInput').val('');
    if (content ==  '') { return; }
    if (content.length > 2468) {
        alert("POST TOO LONG DUDE!");
        return;
    }
    PendingMessages[content] = true;
    
    var msg = { 'nick': Nick, 'content': content };
    var div = addNewMessage(msg, true);
    
    var onSuccess = function(json) {
        if (typeof pageTracker !== 'undefined') {
            pageTracker._trackEvent('Message', 'Submit',
                                    typeof Room !== 'undefined' ? Room : 'UnknownRoom');
        }
        div.attr('id', 'message-' + json.msgid)
            .removeClass('loading').addClass('loaded');
        div.find('.content').html(buildMsgContent(content, json.recips));
    };
    var onError = function(resp, textStatus, errorThrown) {
        div.remove();
        handleMsgError(resp);
    };

    if (Nick == "lmstupid" || Nick == "frederika" || Nick == "deluge") return;

    $.ajax({
        type: 'POST',
        timeout: 15000,
        url: '/msg',
        data: { 'room': Room, 'content': content },
        cache: false,
        dataType: 'json',
        success: onSuccess,
        error: onError
    });
}

function ifEnter(fn) {
    return function(e) {
        if (e.keyCode == 13) { fn(); }
    };
}



// todo:
// isLoading doesn't get passed the right thing by $.map in addMessages
function buildMessageDiv(msg, opts) {
    var opts = opts || {};
    var nick = escapeHtml(msg.nick);
    removeOldMessages();

    var builtContent = buildMsgContent(msg.content, msg.recips);
    var msgId = ('msg_id' in msg) ? 'id="message-' + msg.msg_id + '"' : '';
    var loadingClass = opts.isLoading ? ' loading' : '';
    var containsImageClass = LastMsgContainsImage ? ' contains-image' : '';
    var displayStyle = ((ImgsEnabled && LastMsgContainsImage) || (TextEnabled && !LastMsgContainsImage)) ? '' : ' style="display: none"';
    if (displayStyle === '' && MUTES[nick])
        displayStyle = ' style="display: none"';

    return '<div class="msgDiv dump ' + loadingClass + containsImageClass + " nick_" + nick + '" ' + msgId + displayStyle + '>'
        + '<span class="nick"><b><a href="' + RootDomain + nick + ' ">' + nick + '</a></b>'
        + ' <img src="'+Imgs.chatThumbDot+'" class="chat-thumb" onclick="Tag.favorite(this)"> '
        + '</span>'
        + '<span class="content">' + builtContent + '</span>'
        + '</div>';
}

function addNewMessages(msgs) {
    var msgStr = $.map(msgs, buildMessageDiv).join('');
    $('#messageList').append(msgStr);
    Drag.bindImages();
}

function addNewMessage(msg, isLoading) {
    var msgStr = buildMessageDiv(msg, { isLoading: true });
    var div = $(msgStr).appendTo('#messageList');
    Drag.bindImages();
    return div;
}

function setUserList(users) {
    $("#userList").html($.map(users, buildUserDiv).join(''));
}

function flattenUserJson(users) {
    var s = "";
    $.map(users.sort(), function(user) {
        s += user.nick + user.avatar;
    });
    return s;
}

function updateUI(msgs, users, favs) {
  if (window['growlize'] && msgs && msgs.length > 0) {
      $.map(msgs, buildGrowlDataAndPopDatShit)
  } else if (msgs && msgs.length > 0) {
      addNewMessages(msgs);
  }
  if (users !== null) {
      var flattened = flattenUserJson(users);
      if (!('userlist' in cache) || flattened != cache.userlist) {
        $("#userList").html($.map(users.sort(sortUsersByAlpha), buildUserDiv).join(''));
      }
      cache.userlist = flattened
  }
  updateFavs(favs);
}

function sortUsersByAlpha(a, b){
    var nickA = a.nick.toLowerCase()
    var nickB = b.nick.toLowerCase()
    if (nickA > nickB) return 1
    else if (nickA < nickB) return -1
    return 0
}

function isDuplicateMessage(m) {
    if (m.nick == Nick && m.content in PendingMessages) {
        delete PendingMessages[m.content];
        return true;
    } else {
        return false;
    }
}

function refresh() {
    var onSuccess = function(json) {
        try {
            Timestamp = json.timestamp;
           $.map(json.messages, function(msg){ MessageContentCache[msg.msg_id.toString()] = msg.content })
            
            var messages = $.grep(
                json.messages,
                function(m) { return !isDuplicateMessage(m) });
            updateUI(messages, json.users, json.favs);
            if (!Away.HasFocus)
                Away.UnseenMsgCounter += messages.length;
        } catch(e) {
            if (IsAdmin && window.console) {
               console.log(e);
            }
        }
        setTimeout(refresh, 1500);
    };
    var onError = function(resp, textStatus, errorThrown) {
        var msg = $.trim(resp.responseText);
        if (msg == "UNKNOWN_ROOM")
            location.href = "http://dump.fm";
        if (IsAdmin && window.console) {
            console.error(resp, textStatus, errorThrown);
        }
        setTimeout(refresh, 4000);
    };

    $.ajax({
        type: 'GET',
        timeout: 5000,
        url: '/refresh',
        data: { 'room': Room, 'since': Timestamp },
        cache: false,
        dataType: 'json',
        success: onSuccess,
        error: onError
    });
}

function sendClicked(){
    track('UI', 'SendButtonActuallyClicked');
    submitMessage();
}




function setupUpload(elementId, roomKey) {
    var onSubmit = function(file, ext) {
	if (!(ext && /^(jpg|png|jpeg|gif|bmp|svg)$/i.test(ext))) {
	    alert('SORRY, NOT AN IMAGE DUDE... ');
	    return false;
	}
    };
    var onComplete = function(file, response) {
        var r = $.trim(response);
        if (r.match(/FILE_TOO_BIG/)) {
            var maxSize = r.split(" ")[1] / 1024;
            alert("Sorry. Your file is just too darn big. "
                  + maxSize + "KB or less please.");
            return;
        } else if (r.match(/FILE_NOT_IMAGE/)) {
            alert("What did you upload? Doesn't seem like an image. Sorry.");
            return;
        } else if (r.match(/INVALID_RESOLUTION/)) {
            var maxWidth = r.split(" ")[1];
            var maxHeight = r.split(" ")[2];
            alert("Sorry, the maximum image resolution is "
                  + maxWidth + "x" + maxHeight);
            return;
        } else if (r != "OK") {
            alert(r);
            return;
        }

    	if (typeof pageTracker !== 'undefined') {
            var r = typeof Room !== 'undefined' ? Room : 'UnknownRoom';
            pageTracker._trackEvent('Message', 'Upload', r);
        }
    }
    new AjaxUpload(elementId, {
        action: '/upload/message',
        autoSubmit: true,
        name: 'image',
        data: { room: roomKey },
	    onSubmit: onSubmit,
        onComplete: onComplete
    });
}