Adding forum / community page

- Adding the page. Fixes #17.
- Adding number of comments for community.
- Add sorting to that table.

1 files changed, 80 insertions, 0 deletions

diff --git a/ui/src/components/communities.tsx b/ui/src/components/communities.tsx
new file mode 100644
index 00000000..411aebe1
--- /dev/null
+++ b/ui/src/components/communities.tsx
@@ -0,0 +1,80 @@
+import { Component, linkEvent } from 'inferno';
+import { Link } from 'inferno-router';
+import { Subscription } from "rxjs";
+import { retryWhen, delay, take } from 'rxjs/operators';
+import { UserOperation, Community, Post as PostI, GetPostResponse, PostResponse, Comment, CommentForm as CommentFormI, CommentResponse, CommentLikeForm, CommentSortType, CreatePostLikeResponse, ListCommunitiesResponse } from '../interfaces';
+import { WebSocketService, UserService } from '../services';
+import { msgOp, hotRank,mdToHtml } from '../utils';
+
+interface CommunitiesState {
+  communities: Array<Community>;
+}
+
+export class Communities extends Component<any, CommunitiesState> {
+  private subscription: Subscription;
+  private emptyState: CommunitiesState = {
+    communities: []
+  }
+
+  constructor(props, context) {
+    super(props, context);
+    this.state = this.emptyState;
+    this.subscription = WebSocketService.Instance.subject
+      .pipe(retryWhen(errors => errors.pipe(delay(3000), take(10))))
+      .subscribe(
+        (msg) => this.parseMessage(msg),
+        (err) => console.error(err),
+        () => console.log('complete')
+      );
+    WebSocketService.Instance.listCommunities();
+  }
+
+  render() {
+    return (
+      <div class="container-fluid">
+        <div class="table-responsive">
+          <table class="table table-sm table-hover" data-sortable>
+            <thead>
+              <tr>
+                <th>Name</th>
+                <th>Title</th>
+                <th>Category</th>
+                <th class="text-right">Subscribers</th>
+                <th class="text-right">Posts</th>
+                <th class="text-right">Comments</th>
+              </tr>
+            </thead>
+            <tbody>
+              {this.state.communities.map(community =>
+                <tr>
+                  <td><Link to={`/community/${community.id}`}>{community.name}</Link></td>
+                  <td>{community.title}</td>
+                  <td>{community.category_name}</td>
+                  <td class="text-right">{community.number_of_subscribers}</td>
+                  <td class="text-right">{community.number_of_posts}</td>
+                  <td class="text-right">{community.number_of_comments}</td>
+                </tr>
+              )}
+            </tbody>
+          </table>
+        </div>
+      </div>
+    );
+  }
+
+
+
+  parseMessage(msg: any) {
+    console.log(msg);
+    let op: UserOperation = msgOp(msg);
+    if (msg.error) {
+      alert(msg.error);
+      return;
+    } else if (op == UserOperation.ListCommunities) {
+      let res: ListCommunitiesResponse = msg;
+      this.state.communities = res.communities;
+      this.state.communities.sort((a, b) => b.number_of_subscribers - a.number_of_subscribers);
+      this.setState(this.state);
+    }
+  }
+}