feat(qa): record an agent walking a web or iOS app, then open it#54
Uh oh!
There was an error while loading. Please reload this page.
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
| @@ -0,0 +1,176 @@ | ||||||
| /** | ||||||
| * Encode a JPEG frame directory into a playable recording, and open it. | ||||||
| * | ||||||
| * ffmpeg is optional. When it is missing or fails, we write a self-contained | ||||||
| * HTML player that steps through the frames at the captured fps so the user | ||||||
| * still gets something they can open. No Playwright, no CDP. | ||||||
| */ | ||||||
| import { spawnSync } from 'child_process'; | ||||||
| import * as fs from 'fs'; | ||||||
| import * as path from 'path'; | ||||||
| import { TEMP_DIR } from './platform'; | ||||||
| export const FRAME_PATTERN_JPG = 'frame_%06d.jpg'; | ||||||
| export const FRAME_PATTERN_PNG = 'frame_%06d.png'; | ||||||
| export interface EncodeResult { | ||||||
| artifactPath: string; | ||||||
| kind: 'mp4' | 'webm' | 'html'; | ||||||
| frameCount: number; | ||||||
| ffmpeg: boolean; | ||||||
| } | ||||||
| function listFrames(framesDir: string): { files: string[]; pattern: string } { | ||||||
| if (!fs.existsSync(framesDir)) return { files: [], pattern: FRAME_PATTERN_JPG }; | ||||||
| const names = fs.readdirSync(framesDir); | ||||||
| const jpgs = names.filter((f) => /^frame_\d{6}\.jpe?g$/i.test(f)).sort(); | ||||||
| if (jpgs.length) return { files: jpgs, pattern: FRAME_PATTERN_JPG }; | ||||||
| const pngs = names.filter((f) => /^frame_\d{6}\.png$/i.test(f)).sort(); | ||||||
| return { files: pngs, pattern: FRAME_PATTERN_PNG }; | ||||||
| } | ||||||
| /** True when `ffmpeg` is on PATH. Pure probe — never throws. */ | ||||||
| export function ffmpegAvailable(): boolean { | ||||||
| try { | ||||||
| const r = spawnSync('ffmpeg', ['-version'], { | ||||||
| stdio: 'ignore', | ||||||
| timeout: 4000, | ||||||
| windowsHide: true, | ||||||
| }); | ||||||
| return r.status === 0; | ||||||
| } catch { | ||||||
| return false; | ||||||
| } | ||||||
| } | ||||||
| function writeHtmlPlayer(framesDir: string, frames: string[], fps: number, dest: string): void { | ||||||
| const safeFps = Number.isFinite(fps) && fps > 0 ? fps : 8; | ||||||
| const relFrames = frames.map((f) => path.basename(f)); | ||||||
| const html = `<!DOCTYPE html> | ||||||
| <html lang="en"> | ||||||
| <head> | ||||||
| <meta charset="utf-8"> | ||||||
| <title>gstack recording</title> | ||||||
| <style> | ||||||
| body { margin: 0; background: #111; color: #eee; font: 14px/1.4 system-ui, sans-serif; } | ||||||
| main { max-width: 1100px; margin: 0 auto; padding: 16px; } | ||||||
| img { width: 100%; background: #000; display: block; } | ||||||
| .bar { display: flex; gap: 12px; align-items: center; margin-top: 12px; } | ||||||
| button { font: inherit; padding: 6px 12px; } | ||||||
| </style> | ||||||
| </head> | ||||||
| <body> | ||||||
| <main> | ||||||
| <img id="frame" alt="recording frame"> | ||||||
| <div class="bar"> | ||||||
| <button id="toggle" type="button">Pause</button> | ||||||
| <span id="meta"></span> | ||||||
| </div> | ||||||
| </main> | ||||||
| <script> | ||||||
| const frames = ${JSON.stringify(relFrames)}; | ||||||
| const fps = ${safeFps}; | ||||||
| let i = 0; | ||||||
| let playing = true; | ||||||
| const img = document.getElementById('frame'); | ||||||
| const meta = document.getElementById('meta'); | ||||||
| const toggle = document.getElementById('toggle'); | ||||||
| function show() { | ||||||
| if (!frames.length) { meta.textContent = 'No frames'; return; } | ||||||
| img.src = frames[i]; | ||||||
| meta.textContent = (i + 1) + ' / ' + frames.length + ' @ ' + fps + ' fps'; | ||||||
| } | ||||||
| function tick() { | ||||||
| if (!playing || frames.length === 0) return; | ||||||
| i = (i + 1) % frames.length; | ||||||
| show(); | ||||||
| } | ||||||
| toggle.addEventListener('click', () => { | ||||||
| playing = !playing; | ||||||
| toggle.textContent = playing ? 'Pause' : 'Play'; | ||||||
| }); | ||||||
| show(); | ||||||
| setInterval(tick, Math.max(20, Math.round(1000 / fps))); | ||||||
| </script> | ||||||
| </body> | ||||||
| </html> | ||||||
| `; | ||||||
| fs.writeFileSync(dest, html); | ||||||
| } | ||||||
| function runFfmpeg(framesDir: string, fps: number, outputPath: string, pattern: string): boolean { | ||||||
| const input = path.join(framesDir, pattern); | ||||||
| const attempts: string[][] = [ | ||||||
| ['-y', '-hide_banner', '-loglevel', 'error', '-framerate', String(fps), '-i', input, | ||||||
| '-c:v', 'libx264', '-pix_fmt', 'yuv420p', '-movflags', '+faststart', outputPath], | ||||||
| ['-y', '-hide_banner', '-loglevel', 'error', '-framerate', String(fps), '-i', input, | ||||||
| '-c:v', 'libvpx-vp9', '-pix_fmt', 'yuv420p', outputPath], | ||||||
| ]; | ||||||
| for (const args of attempts) { | ||||||
| try { | ||||||
| const r = spawnSync('ffmpeg', args, { | ||||||
| stdio: 'ignore', | ||||||
| timeout: 120_000, | ||||||
| windowsHide: true, | ||||||
| }); | ||||||
| if (r.status === 0 && fs.existsSync(outputPath) && fs.statSync(outputPath).size > 0) { | ||||||
| return true; | ||||||
| } | ||||||
| } catch { | ||||||
| // try next encoder | ||||||
| } | ||||||
| } | ||||||
| return false; | ||||||
| } | ||||||
| /** | ||||||
| * Turn numbered JPEG frames into a playable artifact next to `outputPath`. | ||||||
| * Prefers mp4 via ffmpeg; falls back to an HTML player in the frame directory. | ||||||
| */ | ||||||
| export function encodeFrameDirectory( | ||||||
| framesDir: string, | ||||||
| outputPath: string, | ||||||
| fps: number, | ||||||
| ): EncodeResult { | ||||||
| const { files: frames, pattern } = listFrames(framesDir); | ||||||
| if (frames.length === 0) { | ||||||
| throw new Error(`No recording frames in ${framesDir}`); | ||||||
| } | ||||||
| const ext = path.extname(outputPath).toLowerCase(); | ||||||
| const videoPath = ext === '.webm' || ext === '.mp4' ? outputPath : outputPath.replace(/\.[^.]+$/, '') + '.mp4'; | ||||||
| if (ffmpegAvailable() && runFfmpeg(framesDir, fps, videoPath, pattern)) { | ||||||
| const kind = path.extname(videoPath).toLowerCase() === '.webm' ? 'webm' : 'mp4'; | ||||||
| return { artifactPath: videoPath, kind, frameCount: frames.length, ffmpeg: true }; | ||||||
| } | ||||||
| const htmlPath = path.join(framesDir, 'player.html'); | ||||||
| writeHtmlPlayer(framesDir, frames, fps, htmlPath); | ||||||
| return { artifactPath: htmlPath, kind: 'html', frameCount: frames.length, ffmpeg: false }; | ||||||
| } | ||||||
| /** Open a file with the platform viewer. Best-effort; never throws. */ | ||||||
| export function openArtifact(filePath: string): boolean { | ||||||
| const resolved = path.resolve(filePath); | ||||||
| if (!fs.existsSync(resolved)) return false; | ||||||
| const cmd = | ||||||
| process.platform === 'darwin' ? ['open', resolved] | ||||||
| : process.platform === 'win32' ? ['cmd', '/c', 'start', '', resolved] | ||||||
| : ['xdg-open', resolved]; | ||||||
| try { | ||||||
| const r = spawnSync(cmd[0], cmd.slice(1), { | ||||||
| stdio: 'ignore', | ||||||
| timeout: 8000, | ||||||
| windowsHide: true, | ||||||
| }); | ||||||
| return r.status === 0; | ||||||
| } catch { | ||||||
| return false; | ||||||
| } | ||||||
| } | ||||||
| export function defaultRecordingPath(stamp = Date.now()): string { | ||||||
| return path.join(TEMP_DIR, `gstack-recording-${stamp}.mp4`); | ||||||
There was a problem hiding this comment. P2: Prompt for AI agents
Suggested change
| ||||||
| } | ||||||
Oops, something went wrong.
Uh oh!
There was an error while loading. Please reload this page.
Oops, something went wrong.
Uh oh!
There was an error while loading. Please reload this page.
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
P2: When
record startreceives an extensionless path inside a dot-named directory, this regex treats the directory as the extension and writes the MP4 elsewhere. Derive the extension frompath.parse(outputPath)or the basename instead.Prompt for AI agents