twister HTML + Javascript User Interface
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// twister_following.js
// 2013 Miguel Freitas
//
// Manage list of following users. Load/Save to localstorage and DHT.
// Provides random user suggestions to follow.
var followingUsers = [];
var _isFollowPublic = {};
var _followsPerPage = 200;
var _maxFollowingPages = 50;
var _followingSeqNum = 0;
var _followSuggestions = [];
var _searchingPartialUsers = "";
var _searchKeypressTimer = undefined;
var _lastSearchUsersResults = [];
var _lastLoadFromDhtTime = 0;
// load followingUsers from localStorage
function loadFollowingFromStorage() {
var ns=$.initNamespaceStorage(defaultScreenName);
if( ns.localStorage.isSet("followingUsers") )
followingUsers = ns.localStorage.get("followingUsers");
if( ns.localStorage.isSet("isFollowPublic") )
_isFollowPublic = ns.localStorage.get("isFollowPublic");
if( ns.localStorage.get("followingSeqNum") > _followingSeqNum)
_followingSeqNum = ns.localStorage.get("followingSeqNum");
if( ns.localStorage.isSet("lastLoadFromDhtTime") )
_lastLoadFromDhtTime = ns.localStorage.get("lastLoadFromDhtTime");
// follow ourselves
if(followingUsers.indexOf(defaultScreenName) < 0) {
followingUsers.push(defaultScreenName);
}
}
// save list of following to localStorage
function saveFollowingToStorage() {
var ns=$.initNamespaceStorage(defaultScreenName);
ns.localStorage.set("followingUsers", followingUsers);
ns.localStorage.set("isFollowPublic", _isFollowPublic);
ns.localStorage.set("followingSeqNum", _followingSeqNum);
ns.localStorage.set("lastLoadFromDhtTime", _lastLoadFromDhtTime);
}
// load public list of following users from dht resources
// "following1", "following2" etc.
// it will stop loading when resource is empty
// callback is called as: doneCb(doneArg, followingList, seqNum)
function loadFollowingFromDht(username, pageNumber, followingList, seqNum, doneCb, doneArg) {
if( !pageNumber ) pageNumber = 1;
dhtget( username, "following" + pageNumber, "s",
function(args, following, rawdata) {
if( rawdata ) {
var seq = parseInt(rawdata[0]["p"]["seq"]);
if( seq > args.seqNum ) args.seqNum = seq;
}
if( following ) {
for( var i = 0; i < following.length; i++ ) {
if( args.followingList.indexOf(following[i]) < 0 ) {
args.followingList.push(following[i]);
}
}
}
if( following && following.length && args.pageNumber < _maxFollowingPages) {
loadFollowingFromDht(username, args.pageNumber,
args.followingList, args.seqNum,
args.doneCb, args.doneArg);
} else {
if( args.doneCb )
args.doneCb(args.doneArg, args.followingList, args.seqNum);
}
}, {pageNumber:pageNumber+1, followingList:followingList, seqNum:seqNum,
doneCb:doneCb, doneArg:doneArg});
}
// get number of following from dht and set item.text()
function getNumFollowing( username, item ) {
loadFollowingFromDht( username, 1, [], 0,
function(args, following, seqNum) {
item.text( following.length );
}, null);
}
function loadFollowingIntoList( username, html_list ) {
loadFollowingFromDht( username, 1, [], 0,
function(args, following, seqNum) {
html_list.html("");
$.each(following, function(i, following_user){
var following_user_li = $( "#following-by-user-template" ).children().clone(true);
// link follower to profile page
$(following_user_li.children()[0]).attr("data-screen-name", following_user);
$(following_user_li.children()[0]).attr("href", $.MAL.userUrl(following_user));
following_user_li.find(".following-screen-name b").text(following_user);
getAvatar( following_user, following_user_li.find(".mini-profile-photo") );
getFullname( following_user, following_user_li.find(".mini-following-name") );
html_list.append( following_user_li );
});
}, null);
}
// load following list from localStorage and then from the dht resource
function loadFollowing(cbFunc, cbArg) {
loadFollowingFromStorage();
updateFollowing();
var curTime = new Date().getTime() / 1000;
// optimization to avoid costly dht lookup everytime the home is loaded
if( curTime > _lastLoadFromDhtTime + 3600*24 ||
document.URL.indexOf("following") >= 0 ) {
var numFollow = followingUsers.length;
loadFollowingFromDht( defaultScreenName, 1, [], _followingSeqNum,
function(args, following, seqNum) {
var curTime = new Date().getTime() / 1000;
_lastLoadFromDhtTime = curTime;
for( var i = 0; i < following.length; i++ ) {
if( followingUsers.indexOf(following[i]) < 0 ) {
followingUsers.push(following[i]);
}
_isFollowPublic[following[i]] = true;
}
if( args.numFollow != followingUsers.length ||
seqNum != _followingSeqNum ) {
_followingSeqNum = seqNum;
// new following loaded from dht
saveFollowingToStorage();
updateFollowing();
}
if( args.cbFunc )
args.cbFunc(args.cbArg);
}, {numFollow:numFollow, cbFunc:cbFunc, cbArg:cbArg} );
} else {
if( cbFunc )
cbFunc(cbArg);
}
}
// save list of following to dht resource. each page ("following1", following2"...)
// constains up to _followsPerPage elements. alternatively we might keep track
// of total strings size to optimize the maximum storage (8kb in node.cpp, but 4kb is
// probably a good target).
function saveFollowingToDht() {
var following = [];
var pageNumber = 1;
for( var i = 0; i < followingUsers.length; i++ ) {
if( followingUsers[i] in _isFollowPublic &&
_isFollowPublic[followingUsers[i]] ) {
following.push(followingUsers[i]);
}
if( following.length == _followsPerPage || i == followingUsers.length-1) {
dhtput( defaultScreenName, "following" + pageNumber, "s",
following, defaultScreenName, _followingSeqNum+1 );
pageNumber++;
following = [];
}
}
dhtput( defaultScreenName, "following" + pageNumber, "s",
following, defaultScreenName, _followingSeqNum+1 );
_followingSeqNum++;
}
// save following to local storage, dht and json rpc
function saveFollowing(cbFunc, cbArg) {
saveFollowingToStorage();
saveFollowingToDht();
updateFollowing(cbFunc, cbArg);
}
// update json rpc with current list of following
function updateFollowing(cbFunc, cbArg) {
twisterRpc("follow", [defaultScreenName,followingUsers],
function(args, ret) {
if( args.cbFunc )
args.cbFunc(args.cbArg, true);
}, {cbFunc:cbFunc, cbArg:cbArg},
function(args, ret) {
console.log("ajax error:" + ret);
if( args.cbFunc )
args.cbFunc(args.cbArg, false);
}, cbArg);
}
// follow a new single user.
// it is safe to call this even if username is already in followingUsers.
// may also be used to set/clear publicFollow.
function follow(user, publicFollow, cbFunc, cbArg) {
if( followingUsers.indexOf(user) < 0 ) {
followingUsers.push(user);
}
if( publicFollow == undefined || publicFollow )
_isFollowPublic[user] = true;
else
delete _isFollowPublic[user];
saveFollowing(cbFunc, cbArg);
}
// unfollow a single user
function unfollow(user, cbFunc, cbArg) {
var i = followingUsers.indexOf(user);
if( i >= 0 ) {
followingUsers.splice(i,1);
}
delete _isFollowPublic[user];
saveFollowing();
twisterRpc("unfollow", [defaultScreenName,[user]],
function(args, ret) {
if( args.cbFunc )
args.cbFunc(args.cbArg, true);
}, {cbFunc:cbFunc, cbArg:cbArg},
function(args, ret) {
console.log("ajax error:" + ret);
if( args.cbFunc )
args.cbFunc(args.cbArg, false);
}, {cbFunc:cbFunc, cbArg:cbArg});
}
// check if public following
function isPublicFollowing(user) {
if( followingUsers.indexOf(user) < 0 ) {
return false;
}
if( (user in _isFollowPublic) && _isFollowPublic[user] == true )
return true;
else
return false;
}
// check if following list is empty
function followingEmptyOrMyself() {
if( followingUsers.length == 0 ||
followingUsers.length == 1 && followingUsers[0] == defaultScreenName )
return true;
else
return false;
}
// randomly choose a user we follow, get "following1" from him and them
// choose a suggestion from their list. this function could be way better, but
// that's about the simplest we may get to start with.
function getRandomFollowSuggestion(cbFunc, cbArg) {
if( followingEmptyOrMyself() ) {
cbFunc(cbArg, null, null);
return;
}
var i;
do{
var i = parseInt( Math.random() * followingUsers.length );
} while( i < followingUsers.length && followingUsers[i] == defaultScreenName);
if( i < followingUsers.length ) {
loadFollowingFromDht( followingUsers[i], 1, [], 0,
function(args, following, seqNum) {
if( following ) {
var suggested = false;
var j = parseInt( Math.random() * following.length );
for( ; j < following.length; j++ ) {
if( followingUsers.indexOf(following[j]) < 0 &&
_followSuggestions.indexOf(following[j]) < 0 ) {
args.cbFunc(args.cbArg, following[j], args.followedBy);
_followSuggestions.push(following[j]);
suggested = true;
break;
}
}
if( !suggested ) {
args.cbFunc(args.cbArg, null, null);
}
}
}, {cbFunc:cbFunc, cbArg:cbArg, followedBy:followingUsers[i]});
} else {
cbFunc(cbArg, null, null);
}
}
// adds following users to the interface (following.html)
function showFollowingUsers(){
var $notFollowing = $(".not-following-any");
if( followingEmptyOrMyself() ) {
$notFollowing.show();
} else {
$notFollowing.hide();
}
var $followingList = $(".following-list");
var $template = $("#following-user-template").detach();
$followingList.empty();
$followingList.append($template);
for( var i = 0; i < followingUsers.length; i++ ) {
if( followingUsers[i] == defaultScreenName )
continue;
var resItem = $template.clone(true);
resItem.removeAttr('id');
resItem.show();
resItem.find(".mini-profile-info").attr("data-screen-name", followingUsers[i]);
resItem.find(".following-screen-name").text(followingUsers[i]);
resItem.find("a.open-profile-modal").attr("href",$.MAL.userUrl(followingUsers[i]));
resItem.find("a.unfollow").attr("href",$.MAL.unfollowUrl(followingUsers[i]));
resItem.find("a.direct-messages-with-user").attr("href", $.MAL.dmchatUrl(followingUsers[i]));
resItem.find(".public-following").prop("checked",isPublicFollowing(followingUsers[i]));
getAvatar(followingUsers[i],resItem.find(".mini-profile-photo"));
getFullname(followingUsers[i],resItem.find(".mini-profile-name"));
resItem.appendTo($followingList);
}
$.MAL.followingListLoaded();
}
function processSuggestion(arg, suggestion, followedBy) {
var dashboard = $(".follow-suggestions");
if( suggestion ) {
var item = $("#follow-suggestion-template").clone(true);
item.removeAttr("id");
item.find(".twister-user-info").attr("data-screen-name", suggestion);
item.find(".twister-user-name").attr("href", $.MAL.userUrl(suggestion));
item.find(".twister-user-tag").text("@" + suggestion);
getAvatar(suggestion,item.find(".twister-user-photo"));
getFullname(suggestion,item.find(".twister-user"));
$spanFollowedBy = item.find(".followed-by");
$spanFollowedBy.text(followedBy);
getFullname(followedBy,$spanFollowedBy);
dashboard.append(item);
}
}
function closeSearchDialog()
{
var $this = $(".userMenu-search-field");//$( this );
$( this ).siblings().slideUp( "fast" );
removeUsersFromDhtgetQueue( _lastSearchUsersResults );
_lastSearchUsersResults = [];
}
function userSearchKeypress(item) {
var partialName = $(".userMenu-search-field").val().toLowerCase();
//var partialName = item.val();
if( !partialName.length ) {
closeSearchDialog();
} else {
if( _searchKeypressTimer !== undefined )
clearTimeout(_searchKeypressTimer);
if( _searchingPartialUsers.length ) {
_searchingPartialUsers = partialName;
} else {
_searchKeypressTimer = setTimeout( function() {
_searchKeypressTimer = undefined;
searchPartialUsername(partialName);
}, 600);
}
}
}
function searchPartialUsername(partialName) {
_searchingPartialUsers = partialName;
twisterRpc("listusernamespartial", [partialName,10],
function(partialName, ret) {
processDropdownUserResults(partialName, ret)
}, partialName,
function(cbArg, ret) {
console.log("ajax error:" + ret);
}, {});
}
function processDropdownUserResults(partialName, results){
if( partialName != _searchingPartialUsers ) {
searchPartialUsername( _searchingPartialUsers );
return;
}
removeUsersFromDhtgetQueue( _lastSearchUsersResults );
_lastSearchUsersResults = results;
var typeaheadAccounts = $(".userMenu-search-profiles");
var template = $("#search-profile-template").detach();
typeaheadAccounts.empty();
typeaheadAccounts.append(template);
if( results.length ) {
for( var i = 0; i < results.length; i++ ) {
if( results[i] == defaultScreenName )
continue;
var resItem = template.clone(true);
resItem.removeAttr('id');
resItem.show();
resItem.find(".mini-profile-info").attr("data-screen-name", results[i]);
resItem.find(".mini-screen-name b").text(results[i]);
resItem.find("a.open-profile-modal").attr("href",$.MAL.userUrl(results[i]));
getAvatar(results[i],resItem.find(".mini-profile-photo"));
getFullname(results[i],resItem.find(".mini-profile-name"));
resItem.appendTo(typeaheadAccounts);
}
$.MAL.searchUserListLoaded();
} else {
closeSearchDialog();
}
_searchingPartialUsers = "";
}
function userClickFollow(e) {
e.stopPropagation();
e.preventDefault();
var $this = $(this);
var $userInfo = $this.closest("[data-screen-name]");
var username = $userInfo.attr("data-screen-name");
follow(username, true, function() {
// delay reload so dhtput may do it's job
window.setTimeout("location.reload();",500);
});
}
function initUserSearch() {
var $userSearchField = $( ".userMenu-search-field" );
$userSearchField.keyup( userSearchKeypress );
$userSearchField.bind( "click", userSearchKeypress );
$userSearchField.clickoutside( closeSearchDialog );
$("button.follow").bind( "click", userClickFollow );
}
function followingListUnfollow(e) {
e.stopPropagation();
e.preventDefault();
var $this = $(this);
var username = $this.closest(".mini-profile-info").attr("data-screen-name");
unfollow(username, function() {
showFollowingUsers();
});
}
function followingListPublicCheckbox(e) {
e.stopPropagation();
var $this = $(this);
var username = $this.closest(".mini-profile-info").attr("data-screen-name");
var public = false;
$this.toggleClass( "private" );
if( $this.hasClass( "private" ) ) {
$this.text( "Private" );
} else {
$this.text( "Public" );
public = true;
}
follow(username, public);
}
function requestSwarmProgress() {
twisterRpc("getlasthave", [defaultScreenName],
function(args, ret) {processSwarmProgressPartial(ret);}, null,
function(args, ret) {console.log("ajax error:" + ret);}, null);
}
function processSwarmProgressPartial(lastHaves)
{
if( defaultScreenName in lastHaves ) {
incLastPostId(lastHaves[defaultScreenName]);
}
twisterRpc("getnumpieces", [defaultScreenName],
function(args, ret) {processSwarmProgressFinal(args.lastHaves, ret);},
{lastHaves:lastHaves},
function(args, ret) {console.log("ajax error:" + ret);}, null);
}
function processSwarmProgressFinal(lastHaves, numPieces)
{
for( var user in lastHaves ) {
if( lastHaves.hasOwnProperty(user) && numPieces.hasOwnProperty(user) ) {
var $userDiv = $(".mini-profile-info[data-screen-name='" + user + "']");
if( $userDiv.length ) {
var $status = $userDiv.find(".swarm-status");
$status.text("Downloaded " + numPieces[user] + "/" + (lastHaves[user]+1) + " posts");
$status.fadeIn();
}
}
}
window.setTimeout("requestSwarmProgress();",2000);
}
function followingChangedUser() {
followingUsers = [];
_isFollowPublic = {};
_followingSeqNum = 0;
_followSuggestions = [];
_lastLoadFromDhtTime = 0;
}
function initInterfaceFollowing() {
initInterfaceCommon();
initUserSearch();
initInterfaceDirectMsg();
$("button.unfollow").bind( "click", followingListUnfollow );
$(".public-following").bind( "click", followingListPublicCheckbox );
$(".mentions-from-user").bind( "click", openMentionsModal );
initUser( function() {
if( !defaultScreenName ) {
alert("Username undefined, login required.");
$.MAL.goLogin();
return;
}
checkNetworkStatusAndAskRedirect();
$(".postboard-loading").fadeIn();
loadFollowing( function(args) {
showFollowingUsers();
requestSwarmProgress();
});
initMentionsCount();
initDMsCount();
});
}