feat(web): reply to review threads and quote comments from the PR Summary tab

apps/web/src/components/pullRequest/PullRequestCommentForm.tsx

@@ -17,16 +17,21 @@ import {
 import { pullRequestReviewKey } from "./pullRequestReviewStore";
 import { useInlineActionConfirm } from "./useInlineActionConfirm";
 
+/** A fresh object each time, so quoting the same comment twice still lands. */
+export type PullRequestQuoteRequest = { readonly text: string };
+
 export function PullRequestCommentForm({
   environmentId,
   active,
   reference,
   detail,
   actionPending,
   textareaRef,
+  quoteRequest,
   onCommentAction,
   onCommented,
   onClose,
+  onQuoted,
 }: {
   environmentId: EnvironmentId;
   /** False while the form stays mounted but hidden; dictation is cancelled then. */
@@ -35,16 +40,45 @@ export function PullRequestCommentForm({
   detail: PullRequestDetailView;
   actionPending: boolean;
   textareaRef: RefObject<HTMLTextAreaElement | null>;
+  quoteRequest?: PullRequestQuoteRequest | undefined;
   onCommentAction: (
     body: string,
     action: "close" | "reopen",
   ) => Promise<{ readonly commentPosted: boolean }>;
   onCommented: () => void;
   onClose: () => void;
+  /** A quote deferred past a successful post lands after `onClose`, so the form asks to be shown again. */
+  onQuoted: () => void;
 }) {
   const [body, setBody] = useState("");
   const [submitting, setSubmitting] = useState<"comment" | "close" | "reopen" | null>(null);
   const locked = submitting !== null || actionPending;
+  const [answeredQuoteRequest, setAnsweredQuoteRequest] = useState(quoteRequest);
+  const [pendingQuotes, setPendingQuotes] = useState<ReadonlyArray<string>>([]);
+  const [caretAfterQuote, setCaretAfterQuote] = useState(false);
+  let quotes = pendingQuotes;
+  if (quoteRequest !== answeredQuoteRequest) {
+    setAnsweredQuoteRequest(quoteRequest);
+    if (quoteRequest) quotes = [...quotes, quoteRequest.text];
+  }
+  // A successful post clears the draft, so quotes wait until posting settles.
+  if (quotes.length > 0 && !locked) {
+    setPendingQuotes([]);
+    setBody((draft) => [draft.trimEnd(), ...quotes].filter((part) => part.length > 0).join("\n\n"));
+    setCaretAfterQuote(true);
+  } else if (quotes !== pendingQuotes) {
+    setPendingQuotes(quotes);
+  }
+  // oxlint-disable-next-line t3code/no-unreasoned-state-sync -- reveals the composer and moves the DOM caret after a quote lands
+  useEffect(() => {
+    const textarea = textareaRef.current;
+    if (!caretAfterQuote || !textarea) return;
+    setCaretAfterQuote(false);
+    onQuoted();
+    textarea.focus({ preventScroll: true });
+    textarea.setSelectionRange(textarea.value.length, textarea.value.length);
+    textarea.scrollTop = textarea.scrollHeight;
+  }, [caretAfterQuote, textareaRef, onQuoted]);
   const speech = useTextFieldSpeech({
     environmentId,
     projectId: reference.projectId,

apps/web/src/components/pullRequest/PullRequestComposer.tsx

@@ -9,7 +9,7 @@ import { useRef, useState } from "react";
 import { Button } from "../ui/button";
 import { Popover, PopoverClose, PopoverPopup, PopoverTitle, PopoverTrigger } from "../ui/popover";
 import { Toggle, ToggleGroup } from "../ui/toggle-group";
-import { PullRequestCommentForm } from "./PullRequestCommentForm";
+import { PullRequestCommentForm, type PullRequestQuoteRequest } from "./PullRequestCommentForm";
 import { PullRequestReviewForm } from "./PullRequestReviewForm";
 import {
   pullRequestReviewKey,
@@ -27,6 +27,7 @@ export function PullRequestComposer({
   onCommented,
   onReviewSubmitted,
   openReviewRequest,
+  quoteRequest,
 }: {
   environmentId: EnvironmentId;
   reference: PullRequestRef;
@@ -39,6 +40,7 @@ export function PullRequestComposer({
   onCommented: () => void;
   onReviewSubmitted: () => void;
   openReviewRequest?: number | undefined;
+  quoteRequest?: PullRequestQuoteRequest | undefined;
 }) {
   const term = sourceControlClients.get(detail.provider).changeRequest.singular;
   const [open, setOpen] = useState(false);
@@ -60,6 +62,12 @@ export function PullRequestComposer({
     setRequestedMode("review");
     setOpen(true);
   }
+  const [answeredQuoteRequest, setAnsweredQuoteRequest] = useState(quoteRequest);
+  if (quoteRequest !== answeredQuoteRequest) {
+    setAnsweredQuoteRequest(quoteRequest);
+    setRequestedMode("comment");
+    setOpen(true);
+  }
 
   const canComment = detail.capabilities.comment && detail.viewerPermissions.comment;
   const verdicts = detail.capabilities.review.verdicts.filter((verdict) =>
@@ -180,9 +188,14 @@ export function PullRequestComposer({
               detail={detail}
               actionPending={actionPending}
               textareaRef={commentRef}
+              quoteRequest={quoteRequest}
               onCommentAction={onCommentAction}
               onCommented={onCommented}
               onClose={() => setOpen(false)}
+              onQuoted={() => {
+                setRequestedMode("comment");
+                setOpen(true);
+              }}
             />
           </div>
         ) : null}

apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx

@@ -114,6 +114,7 @@ import { openOnHostLabel } from "./pullRequestLinkContextMenu";
 import { PullRequestMarkdownContext } from "./PullRequestMarkdown";
 import { pullRequestMarkdownPlugins } from "./pullRequestMarkdown.logic";
 import { PullRequestComposer } from "./PullRequestComposer";
+import type { PullRequestQuoteRequest } from "./PullRequestCommentForm";
 import { PullRequestSummaryTab } from "./PullRequestSummaryTab";
 import { PullRequestTimelineTab } from "./PullRequestTimelineTab";
 import {
@@ -376,6 +377,7 @@ export function PullRequestDetailPanel({
   useEnvironmentQuery(pullRequestEnvironment.changeBreakdown({ environmentId, input: reference }));
   const [threadPickerOpen, setThreadPickerOpen] = useState(false);
   const [openReviewRequest, setOpenReviewRequest] = useState(0);
+  const [quoteRequest, setQuoteRequest] = useState<PullRequestQuoteRequest>();
   const {
     canWriteSourceControl,
     detailQuery,
@@ -1889,6 +1891,9 @@ export function PullRequestDetailPanel({
                   fixCheckLabel={handoffLabels.fixCheck}
                   {...(canFixFindings ? { onFixFinding: startFixFinding } : {})}
                   {...(attachTarget === null ? {} : { onAddToChat: addCommentToChat })}
+                  {...(detail.capabilities.comment && detail.viewerPermissions.comment
+                    ? { onQuoteReply: (text: string) => setQuoteRequest({ text }) }
+                    : {})}
                   onRefresh={refreshDetail}
                   onRefreshChecks={refreshFromHost}
                 />
@@ -2005,6 +2010,7 @@ export function PullRequestDetailPanel({
             onCommented={refreshDetail}
             onReviewSubmitted={refreshDetail}
             openReviewRequest={openReviewRequest}
+            quoteRequest={quoteRequest}
           />
         </div>
       ) : null}

apps/web/src/components/pullRequest/PullRequestReviewAnnotation.tsx

@@ -36,7 +36,11 @@ import { PullRequestActorAvatar, PullRequestActorLabel } from "./pullRequestPres
 import { PullRequestMarkdown } from "./PullRequestMarkdown";
 import { PullRequestMarkdownEditor } from "./PullRequestMarkdownEditor";
 import { PullRequestReactionBar } from "./PullRequestReactions";
-import type { PendingReviewComment } from "./pullRequestReviewStore";
+import {
+  pullRequestThreadReplyKey,
+  usePullRequestReviewStore,
+  type PendingReviewComment,
+} from "./pullRequestReviewStore";
 import {
   PullRequestMarkdownTextarea,
   type PullRequestCompletionScope,
@@ -225,12 +229,8 @@ export function ReviewThreadCard({
   hidden?: boolean;
 }) {
   const [expanded, setExpanded] = useState(hidden !== undefined || !thread.isResolved);
-  const [replying, setReplying] = useState(false);
-  const [reply, setReply] = useState("");
   const [editingId, setEditingId] = useState<string | null>(null);
   const [savingEdit, setSavingEdit] = useState(false);
-  const sendingRef = useRef(false);
-  const replyRef = useRef<HTMLTextAreaElement>(null);
   const [loadedPage, setLoadedPage] = useState<
     (PullRequestThreadCommentsResult & { readonly threadId: string }) | null
   >(null);
@@ -259,15 +259,8 @@ export function ReviewThreadCard({
     }
   };
 
-  const send = async (text: string) => {
-    const trimmed = text.trim();
-    if (trimmed.length === 0 || pending || sendingRef.current) return;
-    sendingRef.current = true;
-    const result = await settlePromise(() => onReply(trimmed));
-    sendingRef.current = false;
-    if (result._tag === "Failure") throw squashAtomCommandFailure(result);
-    if (!result.value) return;
-    // Replies return no comment; retain loaded data and reopen pagination for a later read.
+  // Replies return no comment; retain loaded data and reopen pagination for a later read.
+  const keepLoadedPage = () =>
     setLoadedPage((previous) =>
       previous?.threadId === thread.id
         ? {
@@ -276,9 +269,6 @@ export function ReviewThreadCard({
           }
         : previous,
     );
-    setReply("");
-    setReplying(false);
-  };
   const loadMore = async () => {
     if (nextCommentsCursor === null || loadingMore) return;
     setLoadingMore(true);
@@ -420,67 +410,127 @@ export function ReviewThreadCard({
               </Button>
             </div>
           ) : null}
-
-          {canReply ? (
-            replying ? (
-              <SpeechTextField
-                environmentId={environmentId}
-                projectId={reference.projectId}
-                ownerKey={JSON.stringify(["pr-reply", environmentId, reference, thread.id])}
-                text={reply}
-                textareaRef={replyRef}
-                onTextChange={setReply}
-                disabled={pending}
-              >
-                {(speech) => (
-                  <div className="mt-2">
-                    <PullRequestMarkdownTextarea
-                      ref={replyRef}
-                      readOnly={speech.freezesEditor}
-                      autoFocus
-                      size="sm"
-                      completionScope={completionScope}
-                      value={reply}
-                      placeholder="Reply"
-                      aria-label="Reply to this conversation"
-                      onValueChange={setReply}
-                      onKeyDown={submitKeys({
-                        value: reply,
-                        pending,
-                        allowEmpty: speech.blocksSubmission,
-                        onSubmit: () => speech.submitAfterDictation((text) => void send(text)),
-                        onCancel: () =>
-                          speech.state.phase === "idle" ? setReplying(false) : speech.cancel(),
-                      })}
-                    />
-                    <div className="mt-2 flex flex-wrap items-center justify-end gap-2">
-                      <TextFieldSpeechControls speech={speech} disabled={pending} />
-                      <Button size="xs" variant="ghost" onClick={() => setReplying(false)}>
-                        Cancel
-                      </Button>
-                      <Button
-                        size="xs"
-                        disabled={
-                          speech.preparing ||
-                          pending ||
-                          (!speech.blocksSubmission && reply.trim().length === 0)
-                        }
-                        onClick={() => speech.submitAfterDictation((text) => void send(text))}
-                      >
-                        Reply
-                      </Button>
-                    </div>
-                  </div>
-                )}
-              </SpeechTextField>
-            ) : (
-              <Button size="xs" variant="ghost" className="mt-2" onClick={() => setReplying(true)}>
-                Reply
-              </Button>
-            )
-          ) : null}
         </>
       ) : null}
+      {/* Stays mounted while collapsed so an unsent reply survives. */}
+      {canReply ? (
+        <div hidden={!expanded}>
+          <PullRequestThreadReplyForm
+            environmentId={environmentId}
+            reference={reference}
+            threadId={thread.id}
+            completionScope={completionScope}
+            pending={pending}
+            onReply={onReply}
+            onSent={keepLoadedPage}
+          />
+        </div>
+      ) : null}
     </div>
   );
 }
+
+export function PullRequestThreadReplyForm({
+  environmentId,
+  reference,
+  threadId,
+  completionScope,
+  pending,
+  className,
+  onReply,
+  onSent,
+}: {
+  environmentId: EnvironmentId;
+  reference: PullRequestRef;
+  threadId: string;
+  completionScope: PullRequestCompletionScope | null;
+  pending: boolean;
+  className?: string;
+  onReply: (body: string) => Promise<boolean>;
+  onSent?: () => void;
+}) {
+  // Resolving, reopening, or filtering remounts the form, so the draft lives in the store.
+  const replyKey = pullRequestThreadReplyKey(reference, threadId);
+  const reply = usePullRequestReviewStore((store) => store.replies[replyKey] ?? "");
+  const storeReply = usePullRequestReviewStore((store) => store.setReply);
+  const clearReply = usePullRequestReviewStore((store) => store.clearReply);
+  const setReply = (next: string) => storeReply(replyKey, next);
+  const [replying, setReplying] = useState(reply.length > 0);
+  const sendingRef = useRef(false);
+  const replyRef = useRef<HTMLTextAreaElement>(null);
+
+  const send = async (text: string) => {
+    const trimmed = text.trim();
+    if (trimmed.length === 0 || pending || sendingRef.current) return;
+    sendingRef.current = true;
+    const result = await settlePromise(() => onReply(trimmed));
+    sendingRef.current = false;
+    if (result._tag === "Failure") throw squashAtomCommandFailure(result);
+    if (!result.value) return;
+    onSent?.();
+    clearReply(replyKey, trimmed);
+    setReplying(false);
+  };
+
+  if (!replying) {
+    return (
+      <div className={cn("mt-2", className)}>
+        <Button size="xs" variant="ghost" onClick={() => setReplying(true)}>
+          Reply
+        </Button>
+      </div>
+    );
+  }
+  return (
+    <SpeechTextField
+      environmentId={environmentId}
+      projectId={reference.projectId}
+      ownerKey={JSON.stringify(["pr-reply", environmentId, reference, threadId])}
+      text={reply}
+      textareaRef={replyRef}
+      onTextChange={setReply}
+      disabled={pending}
+    >
+      {(speech) => (
+        <div className={cn("mt-2", className)}>
+          <PullRequestMarkdownTextarea
+            ref={replyRef}
+            readOnly={speech.freezesEditor}
+            autoFocus
+            size="sm"
+            completionScope={completionScope}
+            value={reply}
+            placeholder="Reply"
+            aria-label="Reply to this conversation"
+            onValueChange={setReply}
+            onKeyDown={submitKeys({
+              value: reply,
+              pending,
+              allowEmpty: speech.blocksSubmission,
+              onSubmit: () => speech.submitAfterDictation((text) => void send(text)),
+              onCancel: () =>
+                speech.state.phase === "idle" ? setReplying(false) : speech.cancel(),
+            })}
+          />
+          <div className="mt-2 flex flex-wrap items-center justify-end gap-2">
+            <TextFieldSpeechControls speech={speech} disabled={pending} />
+            <Button size="xs" variant="ghost" onClick={() => setReplying(false)}>
+              Cancel
+            </Button>
+            <Button
+              size="xs"
+              disabled={
+                speech.preparing ||
+                pending ||
+                (!speech.blocksSubmission && reply.trim().length === 0)
+              }
+              onClick={() => speech.submitAfterDictation((text) => void send(text))}
+            >
+              Reply
+            </Button>
+          </div>
+        </div>
+      )}
+    </SpeechTextField>
+  );
+}