Added Like feature and animation emulating a Fav on Mastodon

Added jquery library to handle UI changes

static/fedilove-no-react.js

@@ -2,34 +2,12 @@
 // If you are, and want to rewrite this the "right way", go ahead and do it :)
 // This is plain Javascript and only requires basic calls to implement customizations
 
-// we flag the div.main-content with another class to 
-//  apply different styles inside the content depending on context
-function flag_main_content_as(tag) {
-    add_class_to_element('div.main-content', tag);
-}
-
-function add_class_to_element(css_selector, new_class) {
-    var a = null;
-    if (typeof css_selector == "string")
-        a = document.querySelector(css_selector);
-    else if (typeof css_selector == "object")
-        a = css_selector;
-    var contains = false;
-    for (var i = 0; i < a.classList.length; i++) {
-        if (a.classList[i] == new_class) {
-            contains = true;
-            break;
-        }
-    }
-    if (!contains) {
-        a.classList += " "+new_class;
-    }
-
-}
 
 // Do simple XHR requests to the API on Mastodon
 //  make sure you control errors correctly, as a Mastodon Server might not setup CORS correctly
-function mastodon_request(path, payload, callbk) {
+function mastodon_get(path, payload, callbk)  { return mastodon_request('GET',  path, payload, callbk); }
+function mastodon_post(path, payload, callbk) { return mastodon_request('POST', path, payload, callbk); }
+function mastodon_request(method, path, payload, callbk) {
     payload = payload || null;
     var instance = JSON.parse(localStorage.store_currentInstance);
     var token    = JSON.parse(localStorage.store_loggedInInstances)[instance].access_token;
@@ -37,11 +15,34 @@ function mastodon_request(path, payload, callbk) {
 
     var oReq = new XMLHttpRequest();
     oReq.addEventListener("load", function() { callbk(this.responseText); });
-    oReq.open("GET", url);
+    oReq.open(method, url);
     oReq.setRequestHeader('Authorization', 'Bearer '+token);
     oReq.send(payload);
 }
 
+function api_status_fav(dom, status_id) {
+    var dislike = false;
+    var path = `/api/v1/statuses/${status_id}/favourite`;
+    if (dom.getAttribute('data-liked') === "1") {
+        path = `/api/v1/statuses/${status_id}/unfavourite`;
+        dislike = true;
+    }
+    mastodon_post(path, {}, function(data) {
+        // to-do: check "data" if the POST succeded (for now we expect it did xD)
+        if (!dislike) {
+            $(dom).addClass('liked-msg');
+            $(dom).attr('data-liked', 1);
+            dom.style.animation = "spin2 .5s linear 1";
+        } else {
+            $(dom).removeClass('liked-msg');
+            $(dom).attr('aria-label', '0 '+$(dom).attr('aria-label'));
+            $(dom).removeAttr('data-liked');
+            dom.style.animation = undefined;
+        }
+    });
+}
+
+
 // this is our URL-based customizations made by JavaScript
 var intervalChatCssChange = null;
 function fedilove_customization() {
@@ -51,39 +52,59 @@ function fedilove_customization() {
     if (window.location.pathname.startsWith('/statuses/'))
     {
         // this is ugly enough, so we will use CSS for the rest xD
-        flag_main_content_as('chat');
+        $('div.main-content').addClass('chat');
 
         // show the chat message compose bottom layer
         document.querySelector('#chat-compose-global').style = '';
 
+        // add some animations
+        var style = document.createElement('style');
+        style.innerHTML = '@keyframes spin2 { 100% { transform:rotate(-360deg); } }';
+        document.body.appendChild(style);
+
         // this function changes the css class on articles (messages)
         //  that match the given account_id
-        var change_mymsg_css = function(account_id) {
-            if (intervalChatCssChange !== null)
-                return;
-            setInterval(function() {
+        var makeMessageUIModifications = function(account_id) {
+            if (intervalChatCssChange !== null) return;
+            var theint = 150;
+            setInterval(function()
+            {
                 intervalChatCssChange = this;
-                var nodes = document.querySelectorAll('div.main-content.chat article.status-article');
-                for (var i = 0; i < nodes.length; i++) {
-                    if (nodes[i].querySelector('a.status-author-name').href.endsWith('/accounts/'+account_id)) {
-                       add_class_to_element(nodes[i], 'mymsg');
+
+                // paint MY messages as mine
+                $('div.main-content.chat article.status-article').each(function(i) {
+                    if ($(this).find('a.status-author-name').attr('href').endsWith(`/accounts/${account_id}`)) {
+                        $(this).addClass('mymsg');
+                        theint = 250;
                     }
+                });
+
+                // paint LIKES
+                $('a.status-favs-reblogs.status-favs').each(function(i) {
+                    // easy, aria-label contains the times this status was fav
+                    //  so, we use this as the input source to search for "0",
+                    //  if no "0" found in text, we mark element as liked so we can apply styles and "undo like" function
+                    if ($(this).attr('aria-label').search(/0/) == -1) {
+                        $(this).addClass('liked-msg');
+                        $(this).attr('data-liked', 1);
                     }
-            }, 500);
+                });
+
+            }, theint);
         };
 
         // get the userAccountId to check against the href /account/NUM on the messages
         //  so we can apply different style to my messages
         if (localStorage.store_userAccountId === undefined) {
-            mastodon_request('/api/v1/accounts/verify_credentials', {}, function(data) {
+            mastodon_get('/api/v1/accounts/verify_credentials', {}, function(data) {
                 var json = JSON.parse(data);
                 if (json !== undefined) {
                     localStorage.store_userAccountId = json.id;
-                    change_mymsg_css(json.id);
+                    makeMessageUIModifications(json.id);
                 }
             });
         } else {
-            change_mymsg_css(localStorage.store_userAccountId);
+            makeMessageUIModifications(localStorage.store_userAccountId);
         }
     }
 }
@@ -98,5 +119,5 @@ setInterval(function() {
         fedilove_customization();
         theurl = newurl;
     }
-}, 500);
+}, 250);