name: infra.api_diff

on: [pull_request, workflow_dispatch]

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true

env:
  STAGE_PROGRESS: progress
  STAGE_END: end
  PR_API_OUTPUT: ci_outputs/pr_branch_api
  BASE_API_OUTPUT: ci_outputs/base_branch_api
  DIFF_REPORT_OUTPUT: ci_outputs/diff_report

permissions:
  contents: read
  pull-requests: write

jobs:
  diff_report:
    runs-on: macos-latest
    permissions:
      contents: read
      pull-requests: write
    env:
      FIREBASECI_USE_LATEST_GOOGLEAPPMEASUREMENT: 1

    steps:
      - name: Checkout PR branch
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        with:
          fetch-depth: 2
          persist-credentials: false

      - name: Copy diff report tools
        run: cp -a scripts/api_diff_report/. ~/api_diff_report

      - id: get_changed_files
        name: Get changed file list
        run: |
          echo "file_list=$(git diff --name-only -r HEAD^1 HEAD | tr '\n' ' ')" >> "$GITHUB_OUTPUT"

      - name: Setup python
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: '3.11'

      - name: Install Prerequisites
        run:  ~/api_diff_report/prerequisite.sh

      - name: Clean Diff Report Comment in PR
        env:
          STAGE: ${{ env.STAGE_PROGRESS }}
          TOKEN: ${{github.token}}
          PR_NUMBER: ${{github.event.pull_request.number}}
          RUN_ID: ${{github.run_id}}
        run: |
          python ~/api_diff_report/pr_commenter.py \
            --stage "$STAGE" \
            --token "$TOKEN" \
            --pr_number "$PR_NUMBER" \
            --commit "$GITHUB_SHA" \
            --run_id "$RUN_ID"

      - name: Generate API files for PR branch
        env:
          FILE_LIST: ${{ steps.get_changed_files.outputs.file_list }}
        run: |
          python ~/api_diff_report/api_info.py \
            --file_list "$FILE_LIST" \
            --output_dir ${{ env.PR_API_OUTPUT }}

      - name: Checkout Base branch
        run: git checkout HEAD^

      - name: Generate API files for Base branch
        env:
          FILE_LIST: ${{ steps.get_changed_files.outputs.file_list }}
        run: |
          python ~/api_diff_report/api_info.py \
            --file_list "$FILE_LIST" \
            --output_dir ${{ env.BASE_API_OUTPUT }}

      - name: Generate API Diff Report
        run: |
          python ~/api_diff_report/api_diff_report.py \
            --pr_branch ${{ env.PR_API_OUTPUT }} \
            --base_branch ${{ env.BASE_API_OUTPUT }} \
            --output_dir ${{ env.DIFF_REPORT_OUTPUT }}

      - name: Update Diff Report Comment in PR
        env:
          STAGE: ${{ env.STAGE_END }}
          REPORT: ${{ env.DIFF_REPORT_OUTPUT }}
          TOKEN: ${{github.token}}
          PR_NUMBER: ${{github.event.pull_request.number}}
          RUN_ID: ${{github.run_id}}
        run: |
          python ~/api_diff_report/pr_commenter.py \
            --stage "$STAGE" \
            --report "$REPORT" \
            --token "$TOKEN" \
            --pr_number "$PR_NUMBER" \
            --commit "$GITHUB_SHA" \
            --run_id "$RUN_ID"

      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        if: ${{ !cancelled() }}
        with:
          name: api_info_and_report
          path: ci_outputs
          retention-days: 1