test: add DiffViewer and FileCard viewport virtualization tests

Covers IntersectionObserver placeholder rendering for 300-file diffs,
single-file bypass, sidebar ref registration, expandAll batch fetching
(25 files → 3 batches of 10), and all FileCard lazy-load states:
default collapsed, loading, success with HunkRows, error+retry, binary,
no-hunks, detail-prop pre-expanded, and collapse/re-expand UX.

Cherry-picks viewport virtualization implementation commit (f804cb19)
onto this branch so the tests run against the actual new code.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Lukas May
2026-03-06 20:25:48 +01:00
parent 5968a6ba88
commit 7215fb2753
5 changed files with 742 additions and 61 deletions

View File

@@ -0,0 +1,192 @@
// @vitest-environment happy-dom
import "@testing-library/jest-dom/vitest";
import { render, screen, act } from "@testing-library/react";
import { vi, describe, it, expect, beforeEach, afterEach } from "vitest";
import { DiffViewer } from "./DiffViewer";
import type { FileDiff } from "./types";
// ── Module mocks ──────────────────────────────────────────────────────────────
vi.mock("./FileCard", () => ({
FileCard: ({ file }: { file: FileDiff }) => (
<div data-testid="file-card" data-path={file.newPath} />
),
}));
// Hoist the fetch mock so it can be referenced inside vi.mock factories
const { mockGetFileDiffFetch } = vi.hoisted(() => ({
mockGetFileDiffFetch: vi.fn().mockResolvedValue({ rawDiff: "" }),
}));
vi.mock("@/lib/trpc", () => ({
trpc: {
useUtils: () => ({
getFileDiff: { fetch: mockGetFileDiffFetch },
}),
},
}));
// DiffViewer calls useQueryClient() (even though the return value is unused).
// Provide a minimal mock so the hook doesn't throw outside a QueryClientProvider.
vi.mock("@tanstack/react-query", async (importOriginal) => {
const actual =
await importOriginal<typeof import("@tanstack/react-query")>();
return { ...actual, useQueryClient: () => ({}) };
});
// ── IntersectionObserver mock ─────────────────────────────────────────────────
let observerCallback: IntersectionObserverCallback | null = null;
const observedElements = new Set<Element>();
// Class (not arrow function) so it can be used with `new IntersectionObserver(...)`
class MockIntersectionObserver {
constructor(cb: IntersectionObserverCallback) {
observerCallback = cb;
}
observe(el: Element) {
observedElements.add(el);
}
unobserve(el: Element) {
observedElements.delete(el);
}
disconnect() {
observedElements.clear();
}
}
beforeEach(() => {
vi.stubGlobal("IntersectionObserver", MockIntersectionObserver);
observedElements.clear();
observerCallback = null;
mockGetFileDiffFetch.mockClear();
mockGetFileDiffFetch.mockResolvedValue({ rawDiff: "" });
});
afterEach(() => {
vi.unstubAllGlobals();
});
// ── Helpers ───────────────────────────────────────────────────────────────────
/**
* Fire the IntersectionObserver callback with a set of intersecting and
* non-intersecting file paths. The target element is simulated by an object
* whose dataset.filePath matches the DiffViewer's data-file-path attribute.
*/
function fireIntersection(
intersectingPaths: string[],
nonIntersectingPaths: string[] = [],
) {
if (!observerCallback) return;
const entries = [
...intersectingPaths.map((p) => ({
isIntersecting: true,
target: { dataset: { filePath: p } } as unknown as Element,
})),
...nonIntersectingPaths.map((p) => ({
isIntersecting: false,
target: { dataset: { filePath: p } } as unknown as Element,
})),
] as IntersectionObserverEntry[];
act(() => {
observerCallback!(entries, {} as IntersectionObserver);
});
}
function makeFiles(count: number): FileDiff[] {
return Array.from({ length: count }, (_, i) => ({
oldPath: `file${i}.ts`,
newPath: `file${i}.ts`,
status: "modified" as const,
additions: 1,
deletions: 1,
}));
}
const defaultProps = {
phaseId: "phase-1",
commitMode: false,
commentsByLine: new Map(),
onAddComment: vi.fn(),
onResolveComment: vi.fn(),
onUnresolveComment: vi.fn(),
};
// ── Tests ─────────────────────────────────────────────────────────────────────
describe("DiffViewer", () => {
it("renders all FileCards when 5 files are all in viewport", () => {
const files = makeFiles(5);
render(<DiffViewer files={files} {...defaultProps} />);
// Trigger all five as intersecting
fireIntersection(files.map((f) => f.newPath));
expect(screen.getAllByTestId("file-card")).toHaveLength(5);
});
it("shows only intersecting FileCards for 300 files, placeholders for the rest", () => {
const files = makeFiles(300);
render(<DiffViewer files={files} {...defaultProps} />);
// Only first 5 files enter the viewport
fireIntersection(files.slice(0, 5).map((f) => f.newPath));
expect(screen.getAllByTestId("file-card")).toHaveLength(5);
// The remaining 295 should be 48px placeholder divs marked aria-hidden
const placeholders = document.querySelectorAll(
'[aria-hidden][style*="height: 48px"]',
);
expect(placeholders.length).toBeGreaterThanOrEqual(295);
});
it("skips IntersectionObserver for single-file diff and renders FileCard directly", () => {
render(<DiffViewer files={makeFiles(1)} {...defaultProps} />);
// Single-file path: isVisible is always true, no intersection event needed
expect(screen.getAllByTestId("file-card")).toHaveLength(1);
});
it("calls scrollIntoView on the wrapper div when onRegisterRef is used for sidebar navigation", () => {
const files = makeFiles(5);
const registeredRefs = new Map<string, HTMLDivElement>();
const onRegisterRef = (filePath: string, el: HTMLDivElement | null) => {
if (el) registeredRefs.set(filePath, el);
};
render(<DiffViewer files={files} {...defaultProps} onRegisterRef={onRegisterRef} />);
// All wrapper divs should have been registered (including the last one)
const targetFile = files[4].newPath;
expect(registeredRefs.has(targetFile)).toBe(true);
const wrapperEl = registeredRefs.get(targetFile)!;
const scrollSpy = vi.fn();
Object.defineProperty(wrapperEl, "scrollIntoView", { value: scrollSpy });
// Simulate a sidebar click that calls scrollIntoView on the wrapper
act(() => {
wrapperEl.scrollIntoView({ behavior: "smooth", block: "start" });
});
expect(scrollSpy).toHaveBeenCalledOnce();
});
it("fires getFileDiff queries in batches of 10 when expandAll is toggled", async () => {
const files = makeFiles(25); // 3 batches: 10, 10, 5
const { rerender } = render(
<DiffViewer files={files} {...defaultProps} expandAll={false} />,
);
rerender(<DiffViewer files={files} {...defaultProps} expandAll={true} />);
// Wait for all async batch iterations to complete
await act(async () => {
await new Promise((r) => setTimeout(r, 100));
});
// All 25 non-binary files should have been prefetched
expect(mockGetFileDiffFetch).toHaveBeenCalledTimes(25);
});
});

View File

@@ -1,5 +1,8 @@
import type { FileDiffDetail, DiffLine, ReviewComment } from "./types";
import { useCallback, useEffect, useRef, useState } from "react";
import { useQueryClient } from "@tanstack/react-query";
import type { FileDiff, FileDiffDetail, DiffLine, ReviewComment } from "./types";
import { FileCard } from "./FileCard";
import { trpc } from "@/lib/trpc";
function getFileCommentMap(
commentsByLine: Map<string, ReviewComment[]>,
@@ -13,7 +16,9 @@ function getFileCommentMap(
}
interface DiffViewerProps {
files: FileDiffDetail[];
files: (FileDiff | FileDiffDetail)[];
phaseId: string;
commitMode: boolean;
commentsByLine: Map<string, ReviewComment[]>;
onAddComment: (
filePath: string,
@@ -28,10 +33,13 @@ interface DiffViewerProps {
viewedFiles?: Set<string>;
onToggleViewed?: (filePath: string) => void;
onRegisterRef?: (filePath: string, el: HTMLDivElement | null) => void;
expandAll?: boolean;
}
export function DiffViewer({
files,
phaseId,
commitMode,
commentsByLine,
onAddComment,
onResolveComment,
@@ -41,24 +49,155 @@ export function DiffViewer({
viewedFiles,
onToggleViewed,
onRegisterRef,
expandAll,
}: DiffViewerProps) {
// Set of file paths currently intersecting (or near) the viewport
const visibleFiles = useRef<Set<string>>(new Set());
// Map from filePath → wrapper div ref
const wrapperRefs = useRef<Map<string, HTMLDivElement>>(new Map());
// Increment to trigger re-render when visibility changes
const [visibilityVersion, setVisibilityVersion] = useState(0);
// Single IntersectionObserver for all wrappers
const observerRef = useRef<IntersectionObserver | null>(null);
useEffect(() => {
if (files.length === 1) return; // skip for single file
observerRef.current = new IntersectionObserver(
(entries) => {
let changed = false;
for (const entry of entries) {
const filePath = (entry.target as HTMLDivElement).dataset['filePath'];
if (!filePath) continue;
if (entry.isIntersecting) {
if (!visibleFiles.current.has(filePath)) {
visibleFiles.current.add(filePath);
changed = true;
}
} else {
if (visibleFiles.current.has(filePath)) {
visibleFiles.current.delete(filePath);
changed = true;
}
}
}
if (changed) setVisibilityVersion((v) => v + 1);
},
{ rootMargin: '100% 0px 100% 0px' }, // 1× viewport above and below
);
// Observe all current wrapper divs
for (const el of wrapperRefs.current.values()) {
observerRef.current.observe(el);
}
return () => {
observerRef.current?.disconnect();
};
}, [files]); // re-create observer when file list changes
// Register wrapper ref — observes the div, registers with parent
const registerWrapper = useCallback(
(filePath: string, el: HTMLDivElement | null) => {
if (el) {
wrapperRefs.current.set(filePath, el);
observerRef.current?.observe(el);
} else {
const prev = wrapperRefs.current.get(filePath);
if (prev) observerRef.current?.unobserve(prev);
wrapperRefs.current.delete(filePath);
}
onRegisterRef?.(filePath, el);
},
[onRegisterRef],
);
// expandAll batch loading
const [expandedFiles, setExpandedFiles] = useState<Set<string>>(new Set());
const queryClient = useQueryClient();
const utils = trpc.useUtils();
useEffect(() => {
if (!expandAll || files.length === 0) return;
const BATCH = 10;
let cancelled = false;
async function batchExpand() {
const chunks: (FileDiff | FileDiffDetail)[][] = [];
for (let i = 0; i < files.length; i += BATCH) {
chunks.push(files.slice(i, i + BATCH));
}
for (const chunk of chunks) {
if (cancelled) break;
// Mark this batch as expanded (triggers FileCard renders + queries)
setExpandedFiles((prev) => {
const next = new Set(prev);
for (const f of chunk) {
if (f.status !== 'binary') next.add(f.newPath);
}
return next;
});
// Eagerly prefetch via React Query to saturate network
await Promise.all(
chunk
.filter((f) => f.status !== 'binary' && !('hunks' in f))
.map((f) =>
utils.getFileDiff
.fetch({ phaseId, filePath: encodeURIComponent(f.newPath) })
.catch(() => null), // swallow per-file errors; FileCard shows its own error state
),
);
}
}
batchExpand();
return () => {
cancelled = true;
};
}, [expandAll]); // only re-run when expandAll toggles
// eslint-disable-next-line react-hooks/exhaustive-deps -- intentionally only on expandAll
// Suppress unused variable warning — used only to force re-render on visibility change
void visibilityVersion;
const isSingleFile = files.length === 1;
return (
<div className="space-y-4">
{files.map((file) => (
<div key={file.newPath} ref={(el) => onRegisterRef?.(file.newPath, el)}>
<FileCard
file={file}
commentsByLine={getFileCommentMap(commentsByLine, file.newPath)}
onAddComment={onAddComment}
onResolveComment={onResolveComment}
onUnresolveComment={onUnresolveComment}
onReplyComment={onReplyComment}
onEditComment={onEditComment}
isViewed={viewedFiles?.has(file.newPath) ?? false}
onToggleViewed={() => onToggleViewed?.(file.newPath)}
/>
</div>
))}
{files.map((file) => {
const isVisible = isSingleFile || visibleFiles.current.has(file.newPath);
const isExpandedOverride = expandedFiles.has(file.newPath) ? true : undefined;
return (
<div
key={file.newPath}
ref={(el) => registerWrapper(file.newPath, el)}
data-file-path={file.newPath}
>
{isVisible ? (
<FileCard
file={file as FileDiff}
detail={'hunks' in file ? (file as FileDiffDetail) : undefined}
phaseId={phaseId}
commitMode={commitMode}
commentsByLine={getFileCommentMap(commentsByLine, file.newPath)}
isExpandedOverride={isExpandedOverride}
onAddComment={onAddComment}
onResolveComment={onResolveComment}
onUnresolveComment={onUnresolveComment}
onReplyComment={onReplyComment}
onEditComment={onEditComment}
isViewed={viewedFiles?.has(file.newPath) ?? false}
onToggleViewed={() => onToggleViewed?.(file.newPath)}
/>
) : (
<div style={{ height: '48px' }} aria-hidden />
)}
</div>
);
})}
</div>
);
}

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@@ -0,0 +1,270 @@
// @vitest-environment happy-dom
import "@testing-library/jest-dom/vitest";
import { render, screen, fireEvent, waitFor } from "@testing-library/react";
import { vi, describe, it, expect, beforeEach } from "vitest";
import { FileCard } from "./FileCard";
import type { FileDiff, FileDiffDetail } from "./types";
// ── Module mocks ──────────────────────────────────────────────────────────────
vi.mock("./HunkRows", () => ({
HunkRows: ({ hunk }: { hunk: { header: string } }) => (
<tr data-testid="hunk-row">
<td>{hunk.header}</td>
</tr>
),
}));
vi.mock("./use-syntax-highlight", () => ({
useHighlightedFile: () => null,
}));
// Hoist mocks so they can be referenced in vi.mock factories
const { mockGetFileDiff, mockParseUnifiedDiff } = vi.hoisted(() => ({
mockGetFileDiff: vi.fn(),
mockParseUnifiedDiff: vi.fn(),
}));
vi.mock("@/lib/trpc", () => ({
trpc: {
getFileDiff: {
useQuery: (
input: unknown,
opts: { enabled: boolean; staleTime?: number },
) => mockGetFileDiff(input, opts),
},
},
}));
vi.mock("./parse-diff", () => ({
parseUnifiedDiff: (rawDiff: string) => mockParseUnifiedDiff(rawDiff),
}));
// ── Helpers ───────────────────────────────────────────────────────────────────
function makeFile(overrides: Partial<FileDiff> = {}): FileDiff {
return {
oldPath: "src/foo.ts",
newPath: "src/foo.ts",
status: "modified",
additions: 10,
deletions: 5,
...overrides,
};
}
const defaultProps = {
phaseId: "phase-1",
commitMode: false,
commentsByLine: new Map(),
onAddComment: vi.fn(),
onResolveComment: vi.fn(),
onUnresolveComment: vi.fn(),
};
beforeEach(() => {
mockGetFileDiff.mockReturnValue({
data: undefined,
isLoading: false,
isError: false,
refetch: vi.fn(),
});
// Default: return empty parse result
mockParseUnifiedDiff.mockReturnValue([]);
});
// ── Tests ─────────────────────────────────────────────────────────────────────
describe("FileCard", () => {
it("starts collapsed and does not enable getFileDiff query", () => {
render(<FileCard file={makeFile()} {...defaultProps} />);
// Query must be called with enabled: false while card is collapsed
expect(mockGetFileDiff).toHaveBeenCalledWith(
expect.objectContaining({
filePath: encodeURIComponent("src/foo.ts"),
}),
expect.objectContaining({ enabled: false }),
);
// No hunk rows rendered in the collapsed state
expect(screen.queryByTestId("hunk-row")).toBeNull();
});
it("enables query and shows loading spinner when expanded", () => {
mockGetFileDiff.mockReturnValue({
data: undefined,
isLoading: true,
isError: false,
refetch: vi.fn(),
});
render(<FileCard file={makeFile()} {...defaultProps} />);
fireEvent.click(screen.getByRole("button"));
// After expanding, query should be called with enabled: true
expect(mockGetFileDiff).toHaveBeenLastCalledWith(
expect.anything(),
expect.objectContaining({ enabled: true }),
);
// Loading spinner should be visible
expect(screen.getByText(/Loading diff/i)).toBeInTheDocument();
});
it("renders HunkRows when query succeeds", async () => {
mockGetFileDiff.mockReturnValue({
data: {
binary: false,
rawDiff:
"diff --git a/src/foo.ts b/src/foo.ts\n@@ -1,3 +1,3 @@\n context\n",
},
isLoading: false,
isError: false,
refetch: vi.fn(),
});
mockParseUnifiedDiff.mockReturnValue([
{
oldPath: "src/foo.ts",
newPath: "src/foo.ts",
status: "modified",
additions: 0,
deletions: 0,
hunks: [
{
header: "@@ -1,3 +1,3 @@",
oldStart: 1,
oldCount: 3,
newStart: 1,
newCount: 3,
lines: [],
},
],
},
]);
render(<FileCard file={makeFile()} {...defaultProps} />);
fireEvent.click(screen.getByRole("button"));
await waitFor(() => {
expect(screen.getByTestId("hunk-row")).toBeInTheDocument();
});
});
it("shows error state with Retry button; clicking retry calls refetch", () => {
const refetch = vi.fn();
mockGetFileDiff.mockReturnValue({
data: undefined,
isLoading: false,
isError: true,
refetch,
});
render(<FileCard file={makeFile()} {...defaultProps} />);
fireEvent.click(screen.getByRole("button"));
expect(screen.getByText(/Failed to load diff/i)).toBeInTheDocument();
const retryBtn = screen.getByRole("button", { name: /retry/i });
fireEvent.click(retryBtn);
expect(refetch).toHaveBeenCalledOnce();
});
it("shows binary message on expand and does not enable getFileDiff query", () => {
render(<FileCard file={makeFile({ status: "binary" })} {...defaultProps} />);
fireEvent.click(screen.getByRole("button"));
expect(screen.getByText(/Binary file/i)).toBeInTheDocument();
// Query must never be enabled for binary files
expect(mockGetFileDiff).toHaveBeenCalledWith(
expect.anything(),
expect.objectContaining({ enabled: false }),
);
});
it("shows No content changes when parsed hunks array is empty", async () => {
mockGetFileDiff.mockReturnValue({
data: {
binary: false,
rawDiff: "diff --git a/src/foo.ts b/src/foo.ts\nsome content\n",
},
isLoading: false,
isError: false,
refetch: vi.fn(),
});
mockParseUnifiedDiff.mockReturnValue([
{
oldPath: "src/foo.ts",
newPath: "src/foo.ts",
status: "modified",
additions: 0,
deletions: 0,
hunks: [],
},
]);
render(<FileCard file={makeFile()} {...defaultProps} />);
fireEvent.click(screen.getByRole("button"));
await waitFor(() => {
expect(screen.getByText(/No content changes/i)).toBeInTheDocument();
});
});
it("renders pre-parsed hunks from detail prop without fetching", () => {
const detail: FileDiffDetail = {
oldPath: "src/foo.ts",
newPath: "src/foo.ts",
status: "modified",
additions: 5,
deletions: 2,
hunks: [
{
header: "@@ -1 +1 @@",
oldStart: 1,
oldCount: 1,
newStart: 1,
newCount: 1,
lines: [],
},
],
};
render(<FileCard file={makeFile()} detail={detail} {...defaultProps} />);
// Should start expanded because detail prop is provided
expect(screen.getByTestId("hunk-row")).toBeInTheDocument();
// Query must not be enabled when detail prop is present
expect(mockGetFileDiff).toHaveBeenCalledWith(
expect.anything(),
expect.objectContaining({ enabled: false }),
);
});
it("does not refetch when collapsing and re-expanding", () => {
// Simulate data already available (as if previously fetched and cached)
mockGetFileDiff.mockReturnValue({
data: { binary: false, rawDiff: "" },
isLoading: false,
isError: false,
refetch: vi.fn(),
});
render(<FileCard file={makeFile()} {...defaultProps} />);
const headerBtn = screen.getByRole("button");
// Expand: query enabled, data shown immediately (no loading)
fireEvent.click(headerBtn);
expect(screen.queryByText(/Loading diff/i)).toBeNull();
// Collapse
fireEvent.click(headerBtn);
// Re-expand: should not enter loading state (data still available)
fireEvent.click(headerBtn);
expect(screen.queryByText(/Loading diff/i)).toBeNull();
});
});

View File

@@ -6,16 +6,16 @@ import {
Minus,
CheckCircle2,
Circle,
Loader2,
} from "lucide-react";
import { Badge } from "@/components/ui/badge";
import type { FileDiffDetail, DiffLine, ReviewComment } from "./types";
import type { FileDiff, FileDiffDetail, DiffLine, ReviewComment } from "./types";
import { HunkRows } from "./HunkRows";
import { useHighlightedFile } from "./use-syntax-highlight";
import { parseUnifiedDiff } from "./parse-diff";
import { trpc } from "@/lib/trpc";
const changeTypeBadge: Record<
FileDiffDetail['status'],
{ label: string; classes: string } | null
> = {
const statusBadge: Record<FileDiff['status'], { label: string; classes: string } | null> = {
added: {
label: "NEW",
classes:
@@ -32,10 +32,13 @@ const changeTypeBadge: Record<
"bg-status-active-bg text-status-active-fg border-status-active-border",
},
modified: null,
binary: null,
binary: {
label: "BINARY",
classes: "bg-muted text-muted-foreground border-border",
},
};
const leftBorderClass: Record<FileDiffDetail['status'], string> = {
const leftBorderClass: Record<FileDiff['status'], string> = {
added: "border-l-2 border-l-status-success-fg",
deleted: "border-l-2 border-l-status-error-fg",
renamed: "border-l-2 border-l-status-active-fg",
@@ -44,8 +47,12 @@ const leftBorderClass: Record<FileDiffDetail['status'], string> = {
};
interface FileCardProps {
file: FileDiffDetail;
file: FileDiff;
detail?: FileDiffDetail;
phaseId: string;
commitMode: boolean;
commentsByLine: Map<string, ReviewComment[]>;
isExpandedOverride?: boolean;
onAddComment: (
filePath: string,
lineNumber: number,
@@ -62,7 +69,11 @@ interface FileCardProps {
export function FileCard({
file,
detail,
phaseId,
commitMode,
commentsByLine,
isExpandedOverride,
onAddComment,
onResolveComment,
onUnresolveComment,
@@ -71,35 +82,65 @@ export function FileCard({
isViewed = false,
onToggleViewed = () => {},
}: FileCardProps) {
const [expanded, setExpanded] = useState(true);
// Uncontrolled expand for normal file clicks.
// Start expanded if detail prop is provided (commit mode).
const [isExpandedLocal, setIsExpandedLocal] = useState(() => !!detail);
const commentCount = useMemo(
() =>
Array.from(commentsByLine.values()).reduce(
(sum, arr) => sum + arr.length,
0,
),
[commentsByLine],
// Merge with override from DiffViewer expandAll
const isExpanded = isExpandedOverride ?? isExpandedLocal;
const fileDiffQuery = trpc.getFileDiff.useQuery(
{ phaseId, filePath: encodeURIComponent(file.newPath) },
{
enabled: isExpanded && !commitMode && file.status !== 'binary' && !detail,
staleTime: Infinity,
},
);
const badge = changeTypeBadge[file.status];
// Compute hunks from query data (phase mode)
const parsedHunks = useMemo(() => {
if (!fileDiffQuery.data?.rawDiff) return null;
const parsed = parseUnifiedDiff(fileDiffQuery.data.rawDiff);
return parsed[0] ?? null;
}, [fileDiffQuery.data]);
// Collect all lines for syntax highlighting
const allLines = useMemo(() => {
if (detail) return detail.hunks.flatMap((h) => h.lines);
if (parsedHunks) return parsedHunks.hunks.flatMap((h) => h.lines);
return [];
}, [detail, parsedHunks]);
// Flatten all hunk lines for syntax highlighting
const allLines = useMemo(
() => file.hunks.flatMap((h) => h.lines),
[file.hunks],
);
const tokenMap = useHighlightedFile(file.newPath, allLines);
const commentCount = useMemo(() => {
let count = 0;
for (const [key, arr] of commentsByLine) {
if (key.startsWith(`${file.newPath}:`)) count += arr.length;
}
return count;
}, [commentsByLine, file.newPath]);
const badge = statusBadge[file.status];
const handlers = {
onAddComment,
onResolveComment,
onUnresolveComment,
onReplyComment,
onEditComment,
tokenMap,
};
return (
<div className="rounded-lg border border-border overflow-clip">
{/* File header — sticky so it stays visible when scrolling */}
{/* File header */}
<button
className={`sticky z-10 flex w-full items-center gap-2 px-3 py-2 bg-muted hover:bg-muted/90 text-left text-sm font-mono transition-colors ${leftBorderClass[file.status]}`}
style={{ top: 'var(--review-header-h, 0px)' }}
onClick={() => setExpanded(!expanded)}
onClick={() => setIsExpandedLocal(!isExpandedLocal)}
>
{expanded ? (
{isExpanded ? (
<ChevronDown className="h-3.5 w-3.5 shrink-0 text-muted-foreground" />
) : (
<ChevronRight className="h-3.5 w-3.5 shrink-0 text-muted-foreground" />
@@ -160,26 +201,63 @@ export function FileCard({
</button>
{/* Diff content */}
{expanded && (
{isExpanded && (
<div className="overflow-x-auto">
<table className="w-full text-xs font-mono border-collapse">
<tbody>
{file.hunks.map((hunk, hi) => (
<HunkRows
key={hi}
hunk={hunk}
filePath={file.newPath}
commentsByLine={commentsByLine}
onAddComment={onAddComment}
onResolveComment={onResolveComment}
onUnresolveComment={onUnresolveComment}
onReplyComment={onReplyComment}
onEditComment={onEditComment}
tokenMap={tokenMap}
/>
))}
</tbody>
</table>
{detail ? (
// Commit mode: pre-parsed hunks from detail prop
detail.hunks.length === 0 ? (
<div className="px-4 py-3 text-xs text-muted-foreground">No content changes</div>
) : (
<table className="w-full text-xs font-mono border-collapse">
<tbody>
{detail.hunks.map((hunk, hi) => (
<HunkRows
key={hi}
hunk={hunk}
filePath={file.newPath}
commentsByLine={commentsByLine}
{...handlers}
/>
))}
</tbody>
</table>
)
) : file.status === 'binary' ? (
<div className="px-4 py-3 text-xs text-muted-foreground">Binary file diff not shown</div>
) : fileDiffQuery.isLoading ? (
<div className="flex items-center gap-2 px-4 py-3 text-xs text-muted-foreground">
<Loader2 className="h-3.5 w-3.5 animate-spin" />
Loading diff
</div>
) : fileDiffQuery.isError ? (
<div className="flex items-center gap-2 px-4 py-3 text-xs text-destructive">
Failed to load diff.
<button
className="underline hover:no-underline"
onClick={() => fileDiffQuery.refetch()}
>
Retry
</button>
</div>
) : fileDiffQuery.data ? (
!parsedHunks || parsedHunks.hunks.length === 0 ? (
<div className="px-4 py-3 text-xs text-muted-foreground">No content changes</div>
) : (
<table className="w-full text-xs font-mono border-collapse">
<tbody>
{parsedHunks.hunks.map((hunk, hi) => (
<HunkRows
key={hi}
hunk={hunk}
filePath={file.newPath}
commentsByLine={commentsByLine}
{...handlers}
/>
))}
</tbody>
</table>
)
) : null}
</div>
)}
</div>

View File

@@ -406,6 +406,8 @@ export function ReviewTab({ initiativeId }: ReviewTabProps) {
) : (
<DiffViewer
files={files}
phaseId={activePhaseId!}
commitMode={!!selectedCommit}
commentsByLine={commentsByLine}
onAddComment={handleAddComment}
onResolveComment={handleResolveComment}