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
         run: |
           hotpath profile-pr \
             --head-metrics head-timing.json \
             --base-metrics base-timing.json \
             --github-token ${{ secrets.GITHUB_TOKEN }} \
             --pr-number ${{ steps.pr.outputs.number }}

       - name: Post allocation comparison comment
         run: |
           hotpath profile-pr \
             --head-metrics head-alloc.json \
             --base-metrics base-alloc.json \
             --github-token ${{ secrets.GITHUB_TOKEN }} \
             --pr-number ${{ steps.pr.outputs.number }}