name: Benchmark

on:
  pull_request:
    paths:
      - 'crates/**'
      - 'Cargo.toml'
      - 'Cargo.lock'
      - 'rust-toolchain.toml'

permissions:
  pull-requests: write # For comment

env:
  RUST_LOG: info
  RUST_BACKTRACE: 1
  CARGO_INCREMENTAL: 0

jobs:
  benchmark:
    name: Run benchmark
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          submodules: false

      - name: Install toolchain
        run: rustup show

      - name: Cache
        uses: Swatinem/rust-cache@v2
        with:
          shared-key: benchmark

      - name: Install critcmp
        run: cargo install critcmp

      - name: Compile
        run: cargo build --release -p oxc_benchmark

      - name: Run Bench on PR Branch
        run: cargo benchmark --save-baseline pr

      - name: Checkout Main Branch
        uses: actions/checkout@v3
        with:
          clean: false
          ref: main

      - name: Compile
        run: cargo build --release -p oxc_benchmark

      - name: Run Bench on Main Branch
        run: cargo benchmark --save-baseline main

      - name: Compare Bench Results
        id: bench_comparison
        shell: bash
        run: |
          echo "### Parser Benchmark Results" > output
          echo "\`\`\`"  >> output
          critcmp main pr >> output
          echo "\`\`\`" >> output
          cat output
          comment="$(cat output)"
          comment="${comment//'%'/'%25'}"
          comment="${comment//$'\n'/'%0A'}"
          comment="${comment//$'\r'/'%0D'}"
          echo "::set-output name=comment::$comment"

      - name: Find Comment
        uses: peter-evans/find-comment@v2
        id: fc
        with:
          issue-number: ${{ github.event.pull_request.number }}
          comment-author: 'github-actions[bot]'
          body-includes: Parser Benchmark Results

      - name: Write a new comment
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ github.event.pull_request.number }}
          edit-mode: replace
          comment-id: ${{ steps.fc.outputs.comment-id }}
          body: |
            ${{ steps.bench_comparison.outputs.comment }}

      - name: Remove Criterion Artifact
        run: rm -rf ./target/criterion