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feat(web): fetch /browse data client-side and disallow crawlers via robots.txt #1426

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Merged
brendan-kellam merged 5 commits into from
Jul 8, 2026
Merged

feat(web): fetch /browse data client-side and disallow crawlers via robots.txt #1426

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cc1ddf3
feat(web): disallow crawlers via robots.txt, allowlisting link-previe…
brendan-kellam Jul 8, 2026
5ba36c8
refactor(web): fetch /browse panel data client-side instead of via RS…
brendan-kellam Jul 8, 2026
80ee7fa
docs: add CHANGELOG entries for #1426
brendan-kellam Jul 8, 2026
98aa8a7
Merge branch 'main' into brendan/browse-csr
brendan-kellam Jul 8, 2026
badd362
refactor(web): keep code-preview header/toolbar stable during load
brendan-kellam Jul 8, 2026
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Made the backend worker API address configurable via the `WORKER_API_URL` environment variable (default `http://localhost:3060`) instead of being hardcoded. [#1409](https://github.com/sourcebot-dev/sourcebot/pull/1409)
- [EE] Disabled `DELETE /api/ee/user` while SCIM provisioning is enabled, and switched it to an org-scoped membership removal (with last-owner protection) instead of a global account delete. [#1425](https://github.com/sourcebot-dev/sourcebot/pull/1425)
- [EE] Unified the `GET /api/ee/user` and `GET /api/ee/users` response shapes behind a shared mapper; the single-user endpoint is now scoped to org membership, and both include role, membership status, and last activity. [#1425](https://github.com/sourcebot-dev/sourcebot/pull/1425)
- Browse blob, tree, and commit pages now fetch file sources, folder contents, and diffs client-side via API routes instead of embedding them in the server-rendered page, keeping documents small and event-loop pressure low for large files and commits. [#1426](https://github.com/sourcebot-dev/sourcebot/pull/1426)

### Added
- Added per-step token cost tracking and estimated tool call token usage to Ask Sourcebot chat history. [#1353](https://github.com/sourcebot-dev/sourcebot/pull/1353)
Expand All @@ -23,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- [EE] Added text file attachments to Ask Sourcebot, letting users attach text/code/config files to a chat message via the paperclip button, drag-and-drop, or paste, with large pastes auto-converted to attachments. [#1374](https://github.com/sourcebot-dev/sourcebot/pull/1374)
- [EE] Added image attachments to Ask Sourcebot, letting users attach images to a chat message when the selected model supports image input. [#1375](https://github.com/sourcebot-dev/sourcebot/pull/1375)
- Added deployment system resource stats (CPU cores + cgroup quota, host + container memory, disk, load average) to the service ping, so resource issues can be diagnosed more quickly. [#1424](https://github.com/sourcebot-dev/sourcebot/pull/1424)
- Added a `robots.txt` that disallows crawlers, with an allowlist for link-preview bots so shared links keep their OpenGraph previews. [#1426](https://github.com/sourcebot-dev/sourcebot/pull/1426)

### Fixed
- Send anonymous server-side PostHog events as personless so unauthenticated requests don't inflate person counts. [#1367](https://github.com/sourcebot-dev/sourcebot/pull/1367)
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186 changes: 17 additions & 169 deletions packages/web/src/app/(app)/browse/[...path]/components/codePreviewPanel/codePreviewPanel.tsx
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@@ -1,27 +1,6 @@
import { getRepoInfoByName } from "@/actions";
import { PathHeader } from "@/app/(app)/components/pathHeader";
import { Button } from "@/components/ui/button";
import { Separator } from "@/components/ui/separator";
import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
import { cn, getCodeHostInfoForRepo, isServiceError, truncateSha } from "@/lib/utils";
import { X } from "lucide-react";
import Image from "next/image";
import Link from "next/link";
import { getBrowsePath } from "../../../hooks/utils";
import { BlameAgeLegend } from "./blameAgeLegend";
import { BlameViewToggle } from "./blameViewToggle";
import { PureCodePreviewPanel } from "./pureCodePreviewPanel";
import { getFileBlame, getFileSource } from '@/features/git';

const formatFileSize = (bytes: number): string => {
if (bytes < 1024) {
return `${bytes} B`;
}
if (bytes < 1024 * 1024) {
return `${(bytes / 1024).toFixed(1)} KB`;
}
return `${(bytes / 1024 / 1024).toFixed(1)} MB`;
};
import { isServiceError } from "@/lib/utils";
import { CodePreviewPanelClient } from "./codePreviewPanelClient";

interface CodePreviewPanelProps {
path: string;
Expand All @@ -36,156 +15,25 @@ interface CodePreviewPanelProps {
}

export const CodePreviewPanel = async ({ path, repoName, revisionName, previewRef, blame }: CodePreviewPanelProps) => {
const contentRef = previewRef ?? revisionName;

const [fileSourceResponse, repoInfoResponse, blameResponse] = await Promise.all([
getFileSource({
path,
repo: repoName,
ref: contentRef,
}, { source: 'sourcebot-web-client' }),
getRepoInfoByName(repoName),
blame
? getFileBlame({
path,
repo: repoName,
ref: contentRef,
}, { source: 'sourcebot-web-client' })
: Promise.resolve(undefined),
]);

if (isServiceError(fileSourceResponse)) {
return <div>Error loading file source: {fileSourceResponse.message}</div>
}
const repoInfoResponse = await getRepoInfoByName(repoName);

if (isServiceError(repoInfoResponse)) {
return <div>Error loading repo info: {repoInfoResponse.message}</div>
}

if (blameResponse !== undefined && isServiceError(blameResponse)) {
return <div>Error loading blame: {blameResponse.message}</div>
}

const source = fileSourceResponse.source;
const lineCount = source.length === 0
? 0
: source.split('\n').length - (source.endsWith('\n') ? 1 : 0);
const byteSize = Buffer.byteLength(source, 'utf-8');
const fileSize = formatFileSize(byteSize);

const codeHostInfo = getCodeHostInfoForRepo({
codeHostType: repoInfoResponse.codeHostType,
name: repoInfoResponse.name,
displayName: repoInfoResponse.displayName,
externalWebUrl: repoInfoResponse.externalWebUrl,
});

// @todo: this is a hack to support linking to files for ADO. ADO doesn't support web urls with HEAD so we replace it with main. THis
// will break if the default branch is not main.
const fileWebUrl = repoInfoResponse.codeHostType === "azuredevops" && fileSourceResponse.externalWebUrl ?
fileSourceResponse.externalWebUrl.replace("version=GBHEAD", "version=GBmain") : fileSourceResponse.externalWebUrl;

return (
<>
<div className="flex flex-row py-1 px-2 items-center justify-between">
<PathHeader
path={path}
repo={{
name: repoName,
codeHostType: repoInfoResponse.codeHostType,
displayName: repoInfoResponse.displayName,
externalWebUrl: repoInfoResponse.externalWebUrl,
}}
revisionName={contentRef}
/>

{fileWebUrl && (

<a
href={fileWebUrl}
target="_blank"
rel="noopener noreferrer"
className="flex flex-row items-center gap-2 px-2 py-0.5 rounded-md flex-shrink-0"
>
<Image
src={codeHostInfo.icon}
alt={codeHostInfo.codeHostName}
className={cn('w-4 h-4 flex-shrink-0', codeHostInfo.iconClassName)}
/>
<span className="text-sm font-medium">Open in {codeHostInfo.codeHostName}</span>
</a>
)}
</div>
<Separator />
{!previewRef && (
<div className="flex flex-row items-center gap-3 px-4 py-1 border-b shrink-0">
<BlameViewToggle
repoName={repoName}
revisionName={revisionName}
path={path}
blame={blame ?? false}
/>
<span className="text-sm text-muted-foreground">
{lineCount.toLocaleString()} lines · {fileSize}
</span>
{blame && (
<>
<Separator orientation="vertical" className="h-4" />
<BlameAgeLegend />
</>
)}
</div>
)}
{previewRef && (
<div className="flex flex-row items-center justify-between gap-2 px-4 py-2 border-b shrink-0">
<span className="text-sm">
Previewing file at revision{" "}
<Link
href={getBrowsePath({
repoName,
revisionName,
path: '',
pathType: 'commit',
commitSha: previewRef,
})}
className="font-mono text-link hover:underline"
>
{truncateSha(previewRef)}
</Link>
</span>
<Tooltip key={previewRef}>
<TooltipTrigger>
<Button
asChild
variant="ghost"
size="icon"
className="h-6 w-6 text-muted-foreground"
>
<Link
href={getBrowsePath({
repoName,
revisionName,
path,
pathType: 'blob',
})}
aria-label="Close preview"
>
<X className="h-4 w-4" />
</Link>
</Button>
</TooltipTrigger>
<TooltipContent>Close preview</TooltipContent>
</Tooltip>
</div>
)}
<PureCodePreviewPanel
source={fileSourceResponse.source}
language={fileSourceResponse.language}
repoName={repoName}
path={path}
revisionName={contentRef ?? 'HEAD'}
blame={blameResponse}
/>
</>
<CodePreviewPanelClient
path={path}
repoName={repoName}
revisionName={revisionName}
previewRef={previewRef}
blame={blame}
repo={{
name: repoInfoResponse.name,
codeHostType: repoInfoResponse.codeHostType,
displayName: repoInfoResponse.displayName,
externalWebUrl: repoInfoResponse.externalWebUrl,
}}
/>
)
}
}
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