microfetch/.github/workflows/hotpath-comment.yml

name: Hotpath Comment

on:
  workflow_run:
    workflows: ["Hotpath Profile"]
    types:
      - completed

permissions:
  pull-requests: write

jobs:
  comment:
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    
    steps:
      - name: Download profiling results
        uses: actions/download-artifact@v4
        with:
          name: hotpath-results
          github-token: ${{ secrets.GITHUB_TOKEN }}
          run-id: ${{ github.event.workflow_run.id }}
      
      - name: Read PR number
        id: pr
        run: echo "number=$(cat pr_number.txt)" >> $GITHUB_OUTPUT
      
      - name: Setup Rust
        uses: actions-rust-lang/setup-rust-toolchain@v1
      
      - name: Install hotpath CLI
        run: cargo install hotpath
      
      - name: Post timing comparison comment
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          hotpath profile-pr \
            --repo ${{ github.repository }} \
            --pr-number ${{ steps.pr.outputs.number }} \
            --head-json head-timing.json \
            --base-json base-timing.json \
            --mode timing \
            --title "⏱️ Hotpath Timing Profile"
      
      - name: Post allocation comparison comment
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          hotpath profile-pr \
            --repo ${{ github.repository }} \
            --pr-number ${{ steps.pr.outputs.number }} \
            --head-json head-alloc.json \
            --base-json base-alloc.json \
            --mode alloc \
            --title "📊 Hotpath Allocation Profile"