1 files changed, 180 insertions, 0 deletions
diff --git a/FrontEnd/src/pages/timeline/Timeline.tsx b/FrontEnd/src/pages/timeline/Timeline.tsx
new file mode 100644
index 00000000..32cbf8c8
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/Timeline.tsx
@@ -0,0 +1,180 @@
+import { useState, useEffect } from "react";
+import classNames from "classnames";
+import { HubConnectionState } from "@microsoft/signalr";
+
+import {
+  HttpForbiddenError,
+  HttpNetworkError,
+  HttpNotFoundError,
+} from "~src/http/common";
+import {
+  getHttpTimelineClient,
+  HttpTimelineInfo,
+  HttpTimelinePostInfo,
+} from "~src/http/timeline";
+
+import { getTimelinePostUpdate$ } from "~src/services/timeline";
+
+import { useScrollToBottom } from "~src/components/hooks";
+
+import TimelinePostList from "./TimelinePostList";
+import TimelineInfoCard from "./TimelineInfoCard";
+import TimelinePostEdit from "./edit/TimelinePostCreateView";
+
+import "./Timeline.css";
+
+export interface TimelineProps {
+  className?: string;
+  timelineOwner: string;
+  timelineName: string;
+}
+
+export function Timeline(props: TimelineProps) {
+  const { timelineOwner, timelineName, className } = props;
+
+  const [timeline, setTimeline] = useState<HttpTimelineInfo | null>(null);
+  const [posts, setPosts] = useState<HttpTimelinePostInfo[] | null>(null);
+  const [signalrState, setSignalrState] = useState<HubConnectionState>(
+    HubConnectionState.Connecting,
+  );
+  const [error, setError] = useState<
+    "offline" | "forbid" | "notfound" | "error" | null
+  >(null);
+
+  const [currentPage, setCurrentPage] = useState(1);
+  const [totalPage, setTotalPage] = useState(0);
+
+  const [timelineReloadKey, setTimelineReloadKey] = useState(0);
+  const [postsReloadKey, setPostsReloadKey] = useState(0);
+
+  const updateTimeline = (): void => setTimelineReloadKey((o) => o + 1);
+  const updatePosts = (): void => setPostsReloadKey((o) => o + 1);
+
+  useEffect(() => {
+    setTimeline(null);
+    setPosts(null);
+    setError(null);
+    setSignalrState(HubConnectionState.Connecting);
+  }, [timelineOwner, timelineName]);
+
+  useEffect(() => {
+    getHttpTimelineClient()
+      .getTimeline(timelineOwner, timelineName)
+      .then(
+        (t) => {
+          setTimeline(t);
+        },
+        (error) => {
+          if (error instanceof HttpNetworkError) {
+            setError("offline");
+          } else if (error instanceof HttpForbiddenError) {
+            setError("forbid");
+          } else if (error instanceof HttpNotFoundError) {
+            setError("notfound");
+          } else {
+            console.error(error);
+            setError("error");
+          }
+        },
+      );
+  }, [timelineOwner, timelineName, timelineReloadKey]);
+
+  useEffect(() => {
+    getHttpTimelineClient()
+      .listPost(timelineOwner, timelineName, 1)
+      .then(
+        (page) => {
+          setPosts(
+            page.items.filter((p): p is HttpTimelinePostInfo => !p.deleted),
+          );
+          setTotalPage(page.totalPageCount);
+        },
+        (error) => {
+          if (error instanceof HttpNetworkError) {
+            setError("offline");
+          } else if (error instanceof HttpForbiddenError) {
+            setError("forbid");
+          } else if (error instanceof HttpNotFoundError) {
+            setError("notfound");
+          } else {
+            console.error(error);
+            setError("error");
+          }
+        },
+      );
+  }, [timelineOwner, timelineName, postsReloadKey]);
+
+  useEffect(() => {
+    const timelinePostUpdate$ = getTimelinePostUpdate$(
+      timelineOwner,
+      timelineName,
+    );
+    const subscription = timelinePostUpdate$.subscribe(({ update, state }) => {
+      if (update) {
+        setPostsReloadKey((o) => o + 1);
+      }
+      setSignalrState(state);
+    });
+    return () => {
+      subscription.unsubscribe();
+    };
+  }, [timelineOwner, timelineName]);
+
+  useScrollToBottom(() => {
+    console.log(`Load page ${currentPage + 1}.`);
+    setCurrentPage(currentPage + 1);
+    void getHttpTimelineClient()
+      .listPost(timelineOwner, timelineName, currentPage + 1)
+      .then(
+        (page) => {
+          const ps = page.items.filter(
+            (p): p is HttpTimelinePostInfo => !p.deleted,
+          );
+          setPosts((old) => [...(old ?? []), ...ps]);
+        },
+        (error) => {
+          if (error instanceof HttpNetworkError) {
+            setError("offline");
+          } else if (error instanceof HttpForbiddenError) {
+            setError("forbid");
+          } else if (error instanceof HttpNotFoundError) {
+            setError("notfound");
+          } else {
+            console.error(error);
+            setError("error");
+          }
+        },
+      );
+  }, currentPage < totalPage);
+
+  if (error === "offline") {
+    return <div className={className}>Offline.</div>;
+  } else if (error === "notfound") {
+    return <div className={className}>Not exist.</div>;
+  } else if (error === "forbid") {
+    return <div className={className}>Forbid.</div>;
+  } else if (error === "error") {
+    return <div className={className}>Error.</div>;
+  }
+  return (
+    <div className="timeline-container">
+      {timeline && (
+        <TimelineInfoCard
+          timeline={timeline}
+          connectionStatus={signalrState}
+          onReload={updateTimeline}
+        />
+      )}
+      {posts && (
+        <div className={classNames("timeline", className)}>
+          {timeline?.postable && (
+            <TimelinePostEdit timeline={timeline} onPosted={updatePosts} />
+          )}
+          <TimelinePostList posts={posts} onReload={updatePosts} />
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default Timeline;