3syisgbyq: Add a reusable bottom sheet with the comments and composer sheets on the phone feed

src/components/MobileFeed.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useRef, useState, type MouseEvent, type Ref } from "react";
+import { useCallback, useEffect, useRef, useState, type MouseEvent, type Ref } from "react";
 import { canDelete, formatDuration, isPlayableVideo, relativeTime, type CardMedia, type CardPost } from "@/lib/feed-model";
 import { GrowButton } from "./Buttons";
 import { HexAvatar } from "./HexAvatar";
@@ -8,6 +8,9 @@ import { PlayIcon, PostMenu } from "./PostCard";
 import { VideoPlayer } from "./VideoPlayer";
 import { FeaturedCarousel } from "./FeaturedCarousel";
 import { MobileDock } from "./MobileDock";
+import { BottomSheet } from "./BottomSheet";
+import { CommentsSection } from "./CommentsSection";
+import { Composer } from "./Composer";
 import type { DiscoverExpert } from "@/lib/discover";
 import type { FeedViewProps } from "./FeedView";
 
@@ -278,6 +281,17 @@ function LoadSlide({ index, current, sentinelRef }: { index: number; current: bo
 export function MobileFeed(p: FeedViewProps) {
   const reel = useRef<HTMLDivElement | null>(null);
   const [current, setCurrent] = useState(0);
+  // The open sheet: the comments of one post, the composer, or none.
+  const [sheet, setSheet] = useState<{ kind: "comments"; postId: string } | { kind: "composer" } | null>(null);
+  const closeSheet = useCallback(() => setSheet(null), []);
+  // A successful post closes the composer: publishing ends with no error and an emptied draft.
+  const wasBusy = useRef(false);
+  const composerBusy = !!p.composer?.busy;
+  const composerClear = !!p.composer && !p.composer.error && !p.composer.value && !p.composer.file;
+  useEffect(() => {
+    if (wasBusy.current && !composerBusy && composerClear) setSheet((s) => (s?.kind === "composer" ? null : s));
+    wasBusy.current = composerBusy;
+  }, [composerBusy, composerClear]);
   const onCurrentChange = p.onCurrentChange;
   const showLoad = p.status === "loading" || (p.status === "ready" && !p.loadMoreFailed && (p.loadingMore || !!p.hasMore));
   const experts = p.featuredExperts ?? [];
@@ -421,11 +435,27 @@ export function MobileFeed(p: FeedViewProps) {
           slide={{ index, kind, post: currentPost }}
           onToggleLike={p.onToggleLike}
           likeBusy={currentPost ? p.likeBusy?.has(currentPost.key) : false}
-          onOpenComments={p.onOpenComments}
-          onOpenComposer={p.onOpenComposer}
+          onOpenComments={(postId) => {
+            setSheet({ kind: "comments", postId });
+            p.onOpenComments?.(postId);
+          }}
+          onOpenComposer={() => {
+            setSheet({ kind: "composer" });
+            p.onOpenComposer?.();
+          }}
           onOpenMore={p.onOpenMore}
         />
       ) : null}
+      {sheet?.kind === "comments" ? (
+        <BottomSheet title="Comments" onClose={closeSheet} className="sheet-comments">
+          <CommentsSection postId={sheet.postId} onSignedOut={p.onSignedOut} />
+        </BottomSheet>
+      ) : null}
+      {sheet?.kind === "composer" && p.composer ? (
+        <BottomSheet title="New post" onClose={closeSheet} className="sheet-composer">
+          <Composer {...p.composer} />
+        </BottomSheet>
+      ) : null}
     </section>
   );
 }