name: Metrics Tracking

on:
    pull_request:
    push:
        branches: [trunk]

concurrency:
    group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
    cancel-in-progress: true

permissions: {}

jobs:
    metrics:
        name: Run metrics tests
        runs-on: ubuntu-20.04
        permissions:
            contents: read
        env:
            WP_ARTIFACTS_PATH: ${{ github.workspace }}/artifacts

        steps:
            - uses: actions/checkout@v3

            - name: Setup WooCommerce Monorepo
              uses: ./.github/actions/setup-woocommerce-monorepo
              with:
                install: '@woocommerce/plugin-woocommerce...'
                build: '@woocommerce/plugin-woocommerce'

            - name: Compare performance with trunk
              if: github.event_name == 'pull_request'
              run: cd tools/compare-perf && pnpm run test perf $GITHUB_SHA trunk --tests-branch $GITHUB_SHA

            - name: Compare performance with base branch
              if: github.event_name == 'push'
              # The base hash used here need to be a commit that is compatible with the current WP version
              # The current one is 2f6ca66e00b3666b2567877ae67cbfb5b6ce171a 
              # it needs to be updated every time it becomes unsupported by the current wp-env (WP version).
              # It is used as a base comparison point to avoid fluctuation in the performance metrics.
              run: |
                  WP_VERSION=$(awk -F ': ' '/^Tested up to/{print $2}' readme.txt)
                  IFS=. read -ra WP_VERSION_ARRAY <<< "$WP_VERSION"
                  WP_MAJOR="${WP_VERSION_ARRAY[0]}.${WP_VERSION_ARRAY[1]}"
                  cd tools/compare-perf && pnpm run test perf $GITHUB_SHA 2f6ca66e00b3666b2567877ae67cbfb5b6ce171a --tests-branch $GITHUB_SHA --wp-version "$WP_MAJOR"

            - name: Archive performance results
              if: success()
              uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 # v3.1.3
              with:
                  name: performance-results
                  path: ${{ env.WP_ARTIFACTS_PATH }}/*.performance-results*.json