name: pr-bloaty-ios

on:
  workflow_run:
    workflows: [ios-ci]
    types:
      - completed
env:
  download_url: https://maplibre-native.s3.eu-central-1.amazonaws.com

permissions:
  pull-requests: write
  id-token: write      # This is required for requesting the AWS JWT

jobs:
  pre_job:
    if: github.event.workflow_run.event == 'pull_request'
    runs-on: ubuntu-latest
    outputs:
      should_skip: ${{ steps.check_skip.outputs.should_skip }}
    steps:
      - id: check_skip
        run: |
          conclusion=$(curl ${{ github.event.workflow_run.jobs_url }} | jq -r '.jobs[] | select(.name == "ios-build").conclusion')
          should_skip=$([[ "$conclusion" = "skipped" || "$conclusion" = "cancelled" ]] && echo "true" || echo "false")
          echo "should_skip=$should_skip" >> "$GITHUB_OUTPUT"

  pr-bloaty-ios:
    needs: pre_job
    if: needs.pre_job.outputs.should_skip == 'false'
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4

      - name: Get latest CMake and Ninja
        uses: lukka/get-cmake@latest
        with:
          cmakeVersion: latest
          ninjaVersion: latest

      - name: Cache Bloaty
        id: cache-bloaty
        uses: actions/cache@v4
        with:
          path: bloaty/build/bloaty
          key: bloaty-${{ env.bloaty_sha }}

      # because Google is not making a release...
      # https://github.com/google/bloaty/issues/334
      - name: Compile Bloaty
        if: ${{ !steps.cache-bloaty.outputs.cache-hit }}
        run: |
          git clone https://github.com/google/bloaty.git
          cd bloaty
          git checkout "$bloaty_sha"
          cmake -B build -G Ninja -S .
          cmake --build build

      - name: Download MapLibre_dynamic-main, MapLibre_DWARF-main
        run: |
          wget -O MapLibre_dynamic-main "${download_url}/size-test-ios/MapLibre_dynamic-main"
          wget -O MapLibre_DWARF-main "${download_url}/size-test-ios/MapLibre_DWARF-main"

      - uses: ./.github/actions/get-pr-number
        id: get-pr-number

      - uses: ./.github/actions/download-workflow-run-artifact
        with:
          artifact-name: ios-size-test-files
          expect-files: "MapLibre_dynamic,MapLibre_DWARF"

      - name: Run Bloaty
        run: bloaty/build/bloaty --debug-file MapLibre_DWARF --debug-file MapLibre_DWARF-main MapLibre_dynamic -n 0 -s vm -d compileunits -- MapLibre_dynamic-main > bloaty_diff.txt

      - name: Configure AWS Credentials
        if: vars.OIDC_AWS_ROLE_TO_ASSUME
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-region: us-west-2
          role-to-assume: ${{ vars.OIDC_AWS_ROLE_TO_ASSUME }}
          role-session-name: ${{ github.run_id }}

      - name: Prepare Bloaty message
        run: |
          report_path=bloaty-results-ios/pr-${{ steps.get-pr-number.outputs.pr-number }}-compared-to-main.txt
          aws s3 cp bloaty_diff.txt s3://maplibre-native/"$report_path"
          {
            echo "# Bloaty Results (iOS) 🐋"
            echo 'Compared to main'
            echo '```'
            awk 'NR <= 2; END { print }' bloaty_diff.txt
            echo '```'
            echo "Full report: $download_url/$report_path"
            echo "---"
          } >> message.md

      - name: Leave a comment with Bloaty results
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          number: ${{ steps.get-pr-number.outputs.pr-number }}
          header: bloaty-ios
          path: message.md