name: Performance metrics

on:
    pull_request:
        paths:
            - 'plugins/woocommerce/composer.*'
            - 'plugins/woocommerce/client/admin/config/**'
            - 'plugins/woocommerce/includes/**'
            - 'plugins/woocommerce/lib/**'
            - 'plugins/woocommerce/patterns/**'
            - 'plugins/woocommerce/src/**'
            - 'plugins/woocommerce/templates/**'
            - 'plugins/woocommerce/tests/metrics/**'
            - 'plugins/woocommerce/.wp-env.json'
            - '.github/workflows/pr-assess-performance.yml'

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

env:
    WP_ARTIFACTS_PATH: ${{ github.workspace }}/tools/compare-perf/artifacts/

jobs:
    benchmark:
        name: Evaluate performance metrics
        runs-on: ubuntu-latest

        steps:
            - uses: actions/checkout@v4
              name: Checkout (${{ github.event_name == 'pull_request' && github.head_ref || github.sha }})
              with:
                fetch-depth: 0

            - uses: ./.github/actions/setup-woocommerce-monorepo
              name: Install Monorepo
              with:
                install: '@woocommerce/plugin-woocommerce...'
                build: '@woocommerce/plugin-woocommerce'
                build-type: 'full'
                pull-playwright-cache: true
                pull-package-deps: '@woocommerce/plugin-woocommerce'
          
            #TODO: Inject WordPress version as per plugin requirements (relying to defaults currently).
            - name: Start Test Environment
              run: |
                pnpm --filter="@woocommerce/plugin-woocommerce" test:e2e:install &
                pnpm --filter="@woocommerce/plugin-woocommerce" env:test
                
            # TODO: cache results if pushed to trunk
            - name: Measure performance (@${{ github.sha }})
              run: |
                RESULTS_ID="editor_${{ github.sha }}_round-1" pnpm --filter="@woocommerce/plugin-woocommerce" test:metrics editor
                RESULTS_ID="product-editor_${{ github.sha }}_round-1" pnpm --filter="@woocommerce/plugin-woocommerce" test:metrics product-editor           

            # In alignment with .github/workflows/scripts/run-metrics.sh, we should checkout 3d7d7f02017383937f1a4158d433d0e5d44b3dc9 
            # as baseline. But to avoid switching branches in 'Analyze results' step, we pick 55f855a2e6d769b5ae44305b2772eb30d3e721df 
            # which introduced reporting mode for the perf utility.
            - name: Checkout (55f855a2e6d769b5ae44305b2772eb30d3e721df@trunk, further references as 'baseline')
              run: |
                git reset --hard && git checkout 55f855a2e6d769b5ae44305b2772eb30d3e721df                
                echo "WC_TRUNK_SHA=55f855a2e6d769b5ae44305b2772eb30d3e721df" >> $GITHUB_ENV

            # Artifacts download/upload would be more reliable, but we couldn't make it working...
            - uses: actions/cache@ab5e6d0c87105b4c9c2047343972218f562e4319
              name: Cache measurements (baseline)
              with:
                path: tools/compare-perf/artifacts/*_${{ env.WC_TRUNK_SHA }}_*
                key: ${{ runner.os }}-woocommerce-performance-measures-${{ env.WC_TRUNK_SHA }}

            - name: Verify cached measurements (baseline)
              run: |
                if test -n "$(find tools/compare-perf/artifacts/ -maxdepth 1 -name '*_${{ env.WC_TRUNK_SHA }}_*' -print -quit)"
                then
                  echo "WC_MEASURE_BASELINE=no" >> $GITHUB_ENV
                else
                  ls -l tools/compare-perf/artifacts/
                  echo "Triggering baseline benchmarking"
                  echo "WC_MEASURE_BASELINE=yes" >> $GITHUB_ENV
                fi

            - name: Build (baseline)
              if: ${{ env.WC_MEASURE_BASELINE == 'yes' }}
              run: |
                git clean -n -d -X ./packages ./plugins | grep -v vendor | grep -v node_modules | sed -e 's/Would remove //g' | tr '\n' '\0' | xargs -0 rm -r 
                pnpm install --filter='@woocommerce/plugin-woocommerce...' --frozen-lockfile --config.dedupe-peer-dependents=false
                pnpm --filter='@woocommerce/plugin-woocommerce' build
                
            #TODO: is baseline Wordpress version changes, restart environment targeting it.

            - name: Measure performance (@${{ env.WC_TRUNK_SHA }})
              if: ${{ env.WC_MEASURE_BASELINE == 'yes' }}
              run: |
                RESULTS_ID="editor_${{ env.WC_TRUNK_SHA }}_round-1" pnpm --filter="@woocommerce/plugin-woocommerce" test:metrics editor
                RESULTS_ID="product-editor_${{ env.WC_TRUNK_SHA }}_round-1" pnpm --filter="@woocommerce/plugin-woocommerce" test:metrics product-editor

            - name: Analyze results
              run: |
                pnpm install --filter='compare-perf...' --frozen-lockfile --config.dedupe-peer-dependents=false
                pnpm --filter="compare-perf" run compare compare-performance ${{ github.sha }} ${{ env.WC_TRUNK_SHA }} --tests-branch ${{ github.sha }} --skip-benchmarking
            
            # TODO: Publish to CodeVitals (see .github/workflows/scripts/run-metrics.sh) if pushed to trunk