GLM-Tools-Skills-Agents/skills/community/dyad/pr-screencast/SKILL.md

name, description

name	description
dyad:pr-screencast	Record a visual demonstration of the key feature of this PR using screenshots and add it as a new comment to the PR.

PR Screencast

Record a visual demonstration of the key feature of this PR using screenshots and add it as a new comment to the PR.

IMPORTANT: This skill should complete all steps autonomously where possible. Permission prompts from Claude Code for file writes, bash commands, or GitHub operations should be accepted as normal — do not treat them as blockers.

Arguments

• $ARGUMENTS: (Optional) PR number or URL. If not provided, will use the PR associated with the current branch.

Task Tracking

You MUST use the TodoWrite tool to track your progress. At the start, create tasks for each step below. Mark each task as in_progress when you start it and completed when you finish. This ensures you complete ALL steps.

Instructions

1. Determine the PR:

   If $ARGUMENTS is provided, use it as the PR number or URL.

   Otherwise, get the PR for the current branch:

   gh pr view --json number,title,body,files,headRefOid -q '.number'
   

   If no PR exists for the current branch, report an error and stop.

2. Analyze if this PR is user-facing:

   Fetch the PR details including changed files:

   gh pr view <PR_NUMBER> --json title,body,files,labels
   

   Skip recording if the PR is NOT user-facing. A PR is NOT user-facing if:

   • It only changes documentation files (*.md, *.txt, *.rst)
   • It only changes configuration files (*.json, *.yaml, *.yml, *.toml, *.config.*)
   • It only changes test files (*test*, *spec*, *tests*)
   • It only changes CI/CD files (.github/*, .circleci/*, etc.)
   • It only changes type definitions (*.d.ts)
   • It has labels like "refactor", "chore", "docs", "ci", "internal", "dependencies"
   • The title/body indicates it's a refactoring, internal change, or non-user-facing work

   If the PR is not user-facing, post a brief comment explaining why the screencast was skipped:

   gh pr comment <PR_NUMBER> --body "$(cat <<'EOF'
   ## Screencast Skipped
   
   This PR appears to be a non-user-facing change (refactoring, documentation, tests, or internal changes), so no screencast was recorded.
   
   ---
   *Automated by `/dyad:pr-screencast`*
   EOF
   )"
   

   Then stop.

3. Identify the key feature to demonstrate:

   Analyze the PR to understand:

   • What UI component or feature was added/changed?
   • What user action triggers the feature?
   • What is the expected visual outcome?

   Read the changed files to understand:

   • Which components are affected
   • What user interactions are involved
   • What visual changes should be demonstrated

   Formulate a plan for what the screencast should show:

   • Starting state (screenshot 1)
   • User actions to perform
   • Result state (screenshot 2-3)

4. Create a Playwright screencast script:

   Create a new file at e2e-tests/screencast-demo.spec.ts that takes multiple screenshots to tell the visual story:

   import { expect } from "@playwright/test";
   import { test } from "./helpers/fixtures";
   import * as fs from "fs";
   import * as path from "path";
   
   test.describe.configure({ mode: "serial" });
   
   test("PR Demo Screencast", async ({ electronApp, po }) => {
     // Ensure screenshots directory exists
     const screenshotDir = path.join(__dirname, "screencast-screenshots");
     if (!fs.existsSync(screenshotDir)) {
       fs.mkdirSync(screenshotDir, { recursive: true });
     }
   
     const page = await electronApp.firstWindow();
   
     // Set up the app for demo
     await po.setUp({ autoApprove: true });
   
     // Import or create a test app if needed
     await po.importApp("minimal");
   
     // Wait for app to be ready
     await page.waitForTimeout(1000);
   
     // === STEP 1: Capture initial state ===
     await page.screenshot({
       path: path.join(screenshotDir, "01-initial-state.png"),
       fullPage: false,
     });
   
     // === STEP 2: Navigate to the feature / perform action ===
     // TODO: Replace with actual navigation/interaction for this PR
     // Example: await po.goToSettingsTab();
     await page.waitForTimeout(500);
   
     await page.screenshot({
       path: path.join(screenshotDir, "02-during-action.png"),
       fullPage: false,
     });
   
     // === STEP 3: Show the result ===
     // TODO: Replace with actual result state
     await page.waitForTimeout(500);
   
     await page.screenshot({
       path: path.join(screenshotDir, "03-final-result.png"),
       fullPage: false,
     });
   
     // Verify the final screenshot exists to ensure all steps completed
     expect(
       fs.existsSync(path.join(screenshotDir, "03-final-result.png")),
     ).toBe(true);
   });
   

   Customize the script based on the feature being demonstrated:

   • Use the PageObject methods from e2e-tests/helpers/page-objects/PageObject.ts
   • Use stable selectors (data-testid, role, text)
   • Add appropriate waits between actions (500-1000ms) so screenshots are clear
   • Capture 2-4 screenshots showing the progression of the feature

5. Build the app:

   The app must be built before recording:

   npm run build
   

6. Run the screencast test:

   Run the test to capture screenshots:

   PLAYWRIGHT_HTML_OPEN=never npx playwright test e2e-tests/screencast-demo.spec.ts --timeout=120000 --reporter=list
   

   If the test fails, read the error output, fix the script, and try again (up to 3 attempts). If the test still fails after 3 attempts, post a comment on the PR indicating the screencast could not be captured and report the error. Common issues:

   • Missing selectors - check the component implementation
   • Timing issues - add more waitForTimeout calls
   • Import app issues - try a different test app or create from scratch

7. Verify screenshots were captured:

   Check that the screenshots exist:

   ls -la e2e-tests/screencast-screenshots/
   

   You should see 2-4 PNG files. If not, check the test output for errors.

8. Upload screenshots to GitHub:

   Upload screenshots to an assets branch so they can be referenced in PR comments.

   # Get repo info
   REPO=$(gh repo view --json nameWithOwner -q '.nameWithOwner')
   TIMESTAMP=$(date +%Y%m%d-%H%M%S)
   ASSET_DIR="pr-screencasts/pr-<PR_NUMBER>-$TIMESTAMP"
   
   # Create or update the assets branch
   git fetch origin assets:assets 2>/dev/null || git checkout --orphan assets
   
   # Switch to assets branch, preserving working directory
   git stash --include-untracked
   git checkout assets 2>/dev/null || (git checkout --orphan assets && git rm -rf . 2>/dev/null || true)
   
   # Create directory and copy screenshots
   mkdir -p "$ASSET_DIR"
   git stash pop 2>/dev/null || true
   cp e2e-tests/screencast-screenshots/*.png "$ASSET_DIR/"
   
   # Commit and push
   git add "$ASSET_DIR"
   git commit -m "Add screencast assets for PR #<PR_NUMBER>"
   git push origin assets
   
   # Switch back to original branch
   git checkout -
   git stash pop 2>/dev/null || true
   

   The screenshots will be accessible at:

   https://raw.githubusercontent.com/<REPO>/assets/<ASSET_DIR>/<filename>.png
   

   Fallback: Use text description if upload fails: If uploads don't work, describe the screenshots in text format.

9. Post the comment to the PR:

   Create the PR comment with the demonstration:

   gh pr comment <PR_NUMBER> --body "$(cat <<'EOF'
   ## Feature Demo
   
   ### What this PR does
   <Brief description of the feature based on your analysis>
   
   ### Visual Walkthrough
   
   **Step 1: Initial State**
   <Description of screenshot 1 - or embed image if uploaded>
   
   **Step 2: User Action**
   <Description of what the user does and screenshot 2>
   
   **Step 3: Result**
   <Description of the final result and screenshot 3>
   
   ### How to Test Manually
   1. <Step to reproduce>
   2. <Expected behavior>
   
   ---
   *Automated by `/dyad:pr-screencast`*
   EOF
   )"
   

   IMPORTANT: Do NOT use --edit-last or modify existing comments. Always create a NEW comment.

10. Clean up the Playwright script and assets:

    Delete the temporary screencast script and screenshots:

    rm -f e2e-tests/screencast-demo.spec.ts
    rm -rf e2e-tests/screencast-screenshots/
    

    Also clean up any test results:

    rm -rf test-results/screencast-demo*
    

11. Summarize results:

    Report to the user:

    • Whether the PR was determined to be user-facing or not
    • What feature was demonstrated (if applicable)
    • How many screenshots were captured
    • Link to the PR comment
    • Any issues encountered during recording