Added contributors widget

Author: sake92

_layouts/tour.html

@@ -20,6 +20,11 @@
                     <a href="{{page.next-page}}.html"><strong>next</strong> &rarr;</a>
                     {% endif %}
                 </div>
+
+                <div class="content-contributors">
+                    <h3>Contributors to this page:</h3>
+                    <div id="contributors" class="contributors-container"></div>
+                </div>
             </div>
 		</div>
 

_sass/layout/inner-main.scss

@@ -51,6 +51,29 @@
       }
     }
 
+    .content-contributors {
+      .contributors-container {
+        display: flex;
+        flex-wrap: wrap;
+        align-items: center;
+        div {
+          margin: 5px;
+          a {
+            vertical-align: middle;
+            padding: 3px;
+            text-decoration: none;
+          }
+          img {
+            vertical-align: middle;
+            width: 35px;
+            height: 35px;
+            margin-bottom: 0;
+            border-radius: 7px;
+          }
+        }
+      }
+    }
+
     .content-primary {
       .documentation,
       .tools {

resources/js/functions.js

@@ -521,4 +521,58 @@ $(document).ready(function(){
         $("html, body").animate({ scrollTop: 0 }, 600); 
         return false; 
     }); 
-});
+});
+
+//Contributors widget
+// see https://stackoverflow.com/a/19200303/4496364
+$(document).ready(function () {
+  let githubApiUrl = 'https://api.github.com/repos/scala/docs.scala-lang/commits';
+  // transform "/tour/basics.html" to "_ba/tour/basics.md";
+  let thisPageUrl = window.location.pathname;
+  thisPageUrl = thisPageUrl.substring(1, thisPageUrl.lastIndexOf('.'));
+  thisPageUrl = '_' + thisPageUrl + '.md';
+  // e.g. https://api.github.com/repos/scala/docs.scala-lang/commits?path=README
+  let url = githubApiUrl + '?path=' + thisPageUrl;
+  $.get(url, function (data, status) {
+    
+    let contributorsUnique = [];
+    let res = data.forEach(commit => {
+      // add if not already in array
+      let addedToList = contributorsUnique.find(c => {
+        let matches = c.authorName == commit.commit.committer.name;
+        if (!matches && commit.author) {
+          matches = c.authorName == commit.author.login;
+        }
+        return matches;
+      });
+
+      if (!addedToList) {
+        // first set fallback properties
+        let authorName = commit.commit.committer.name;
+        let authorLink = 'mailto:' + commit.commit.committer.email;
+        let authorImageLink = 'https://github.com/identicons/' + commit.commit.committer.name + '.png';
+        // if author present, fill these preferably
+        if (commit.author) {
+          authorName = commit.author.login;
+          authorLink = commit.author.html_url;
+          authorImageLink = commit.author.avatar_url;
+        }
+        contributorsUnique.push({
+          'authorName': authorName,
+          'authorLink': authorLink,
+          'authorImageLink': authorImageLink
+        });
+      }
+    });
+
+    let contributorsHtml = '';
+    contributorsUnique.forEach(contributor => {
+      let contributorHtml = '<div>';
+      contributorHtml += '<img src="' + contributor.authorImageLink + '">';
+      contributorHtml += '<a href="' + contributor.authorLink + '">' + contributor.authorName + '</a>';
+      contributorHtml += '</div>';
+      contributorsHtml += contributorHtml;
+    });
+    $('#contributors').html(contributorsHtml);
+  });
+});