Real time issue boards

Lists are added automatically when another user adds them. List data is automatically updated, include title, description tooltip & color

Closes #24478

5 files changed, 105 insertions, 21 deletions

diff --git a/app/assets/javascripts/boards/boards_bundle.js.es6 b/app/assets/javascripts/boards/boards_bundle.js.es6
index 7ba918a05f8..cb41d5f5864 100644
--- a/app/assets/javascripts/boards/boards_bundle.js.es6
+++ b/app/assets/javascripts/boards/boards_bundle.js.es6
@@ -48,25 +48,69 @@ $(() => {
       gl.boardService = new BoardService(this.endpoint, this.boardId);
     },
     mounted () {
+      const interval = new gl.SmartInterval({
+        callback: () => {
+          this.fetchAll();
+        },
+        startingInterval: 5 * 1000, // 5 seconds
+        maxInterval: 10 * 1000, // 10 seconds
+        incrementByFactorOf: 10,
+        lazyStart: true,
+      });
+
       Store.disabled = this.disabled;
-      gl.boardService.all()
-        .then((resp) => {
-          resp.json().forEach((board) => {
-            const list = Store.addList(board);
-
-            if (list.type === 'done') {
-              list.position = Infinity;
-            } else if (list.type === 'backlog') {
-              list.position = -1;
+
+      this.fetchAll().then(() => {
+        this.loading = false;
+        interval.start();
+      });
+    },
+    methods: {
+      fetchAll() {
+        return gl.boardService.all()
+          .then((resp) => {
+            const data = resp.json();
+
+            // Remove any old lists
+            if (this.state.lists.length) {
+              const dataListIds = data.map( list => list.id );
+
+              this.state.lists.forEach((list) => {
+                if (dataListIds.indexOf(list.id) === -1) {
+                  list.destroy(false);
+                }
+              });
             }
-          });
 
-          this.state.lists = _.sortBy(this.state.lists, 'position');
+            // Create/Update lists
+            data.forEach((board) => {
+              const list = Store.findList('id', board.id, false);
 
-          Store.addBlankState();
-          this.loading = false;
-        });
-    }
+              if (list) {
+                // If list already exists, update the data
+                list.title = board.title;
+
+                if (board.position !== null) {
+                  list.position = board.position;
+                }
+
+                if (list.label) {
+                  list.label.description = board.label.description;
+                  list.label.color = board.label.color;
+                  list.label.textColor = board.label.text_color;
+                }
+              } else {
+                // If list doesn't exist, create a new list
+                Store.addList(board);
+              }
+            });
+
+            this.state.lists = _.sortBy(this.state.lists, 'position');
+
+            Store.addBlankState();
+          });
+      },
+    },
   });
 
   gl.IssueBoardsSearch = new Vue({
diff --git a/app/assets/javascripts/boards/components/board.js.es6 b/app/assets/javascripts/boards/components/board.js.es6
index 31de3b25284..f4271002743 100644
--- a/app/assets/javascripts/boards/components/board.js.es6
+++ b/app/assets/javascripts/boards/components/board.js.es6
@@ -83,5 +83,8 @@
 
       this.sortable = Sortable.create(this.$el.parentNode, options);
     },
+    updated() {
+      $('.has-tooltip', $(this.$el)).tooltip('fixTitle');
+    },
   });
 })();
diff --git a/app/assets/javascripts/boards/models/list.js.es6 b/app/assets/javascripts/boards/models/list.js.es6
index 429bd27c3fb..aff8dc1931d 100644
--- a/app/assets/javascripts/boards/models/list.js.es6
+++ b/app/assets/javascripts/boards/models/list.js.es6
@@ -3,7 +3,6 @@ class List {
   constructor (obj) {
     this.id = obj.id;
     this._uid = this.guid();
-    this.position = obj.position;
     this.title = obj.title;
     this.type = obj.list_type;
     this.preset = ['backlog', 'done', 'blank'].indexOf(this.type) > -1;
@@ -13,13 +12,33 @@ class List {
     this.loadingMore = false;
     this.issues = [];
     this.issuesSize = 0;
+    this._interval = new gl.SmartInterval({
+      callback: () => {
+        this.getIssues(false);
+      },
+      startingInterval: 6 * 1000, // 6 seconds
+      maxInterval: 11 * 1000, // 11 seconds
+      incrementByFactorOf: 10,
+      lazyStart: true,
+    });
+
+    if (this.type === 'done') {
+      this.position = Infinity;
+    } else if (this.type === 'backlog') {
+      this.position = -1;
+    } else {
+      this.position = obj.position;
+    }
 
     if (obj.label) {
       this.label = new ListLabel(obj.label);
     }
 
     if (this.type !== 'blank' && this.id) {
-      this.getIssues();
+      this.getIssues()
+        .then(() => {
+          this._interval.start();
+        });
     }
   }
 
@@ -41,12 +60,16 @@ class List {
       });
   }
 
-  destroy () {
+  destroy (persist = true) {
     const index = gl.issueBoards.BoardsStore.state.lists.indexOf(this);
     gl.issueBoards.BoardsStore.state.lists.splice(index, 1);
     gl.issueBoards.BoardsStore.updateNewListDropdown(this.id);
 
-    gl.boardService.destroyList(this.id);
+    this._interval.destroy();
+
+    if (persist) {
+      gl.boardService.destroyList(this.id);
+    }
   }
 
   update () {
@@ -102,7 +125,17 @@ class List {
 
   createIssues (data) {
     data.forEach((issueObj) => {
-      this.addIssue(new ListIssue(issueObj));
+      const issue = this.findIssue(issueObj.iid);
+
+      if (issue) {
+        if (issueObj.assignee) {
+          issue.assignee = new ListUser(issueObj.assignee);
+        } else {
+          issue.assignee = undefined;
+        }
+      } else {
+        this.addIssue(new ListIssue(issueObj));
+      }
     });
   }
 
diff --git a/app/views/projects/boards/_show.html.haml b/app/views/projects/boards/_show.html.haml
index 356bd50f7f3..68a38f646cb 100644
--- a/app/views/projects/boards/_show.html.haml
+++ b/app/views/projects/boards/_show.html.haml
@@ -24,5 +24,5 @@
       ":list" => "list",
       ":disabled" => "disabled",
       ":issue-link-base" => "issueLinkBase",
-      ":key" => "_uid" }
+      ":key" => "list._uid" }
   = render "projects/boards/components/sidebar"
diff --git a/changelogs/unreleased/issue-boards-realtime.yml b/changelogs/unreleased/issue-boards-realtime.yml
new file mode 100644
index 00000000000..596848b6b7b
--- /dev/null
+++ b/changelogs/unreleased/issue-boards-realtime.yml
@@ -0,0 +1,4 @@
+---
+title: Realtime issue boards
+merge_request: 
+author: