name: frontend-bundle-report

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review
    paths:
      - packages/frontend/**
      - packages/frontend-shared/**
      - packages/frontend-builder/**
      - packages/i18n/**
      - packages/icons-subsetter/**
      - packages/misskey-js/**
      - packages/misskey-reversi/**
      - packages/misskey-bubble-game/**
      - package.json
      - pnpm-lock.yaml
      - pnpm-workspace.yaml
      - .node-version
      - .github/scripts/utility.mts
      - .github/scripts/frontend-js-size.mts
      - .github/workflows/frontend-bundle-report.yml
      - .github/workflows/frontend-bundle-report-comment.yml

permissions:
  contents: read
  pull-requests: read

concurrency:
  group: frontend-bundle-report-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  report:
    name: Build frontend bundle report
    runs-on: ubuntu-latest
    env:
      FRONTEND_JS_SIZE_LOCALE: ja-JP
    steps:
      - name: Checkout base
        uses: actions/checkout@v6.0.2
        with:
          repository: ${{ github.event.pull_request.base.repo.full_name }}
          ref: ${{ github.event.pull_request.base.sha }}
          path: before
          submodules: true

      - name: Checkout pull request
        uses: actions/checkout@v6.0.2
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.event.pull_request.head.sha }}
          path: after
          submodules: true

      - name: Check base visualizer support
        id: check-base-visualizer
        shell: bash
        run: |
          if grep -q 'FRONTEND_BUNDLE_VISUALIZER' before/packages/frontend/vite.config.ts; then
            echo 'supported=true' >> "$GITHUB_OUTPUT"
          else
            echo 'supported=false' >> "$GITHUB_OUTPUT"
            echo 'Base commit does not support frontend bundle visualizer. Skipping frontend bundle report.' >> "$GITHUB_STEP_SUMMARY"
          fi

      - name: Setup pnpm
        if: steps.check-base-visualizer.outputs.supported == 'true'
        uses: pnpm/action-setup@v6.0.3
        with:
          package_json_file: after/package.json

      - name: Setup Node.js
        if: steps.check-base-visualizer.outputs.supported == 'true'
        uses: actions/setup-node@v6.4.0
        with:
          node-version-file: after/.node-version
          cache: pnpm
          cache-dependency-path: |
            before/pnpm-lock.yaml
            after/pnpm-lock.yaml

      - name: Install dependencies for base
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: before
        run: pnpm i --frozen-lockfile

      - name: Build frontend dependencies for base
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: before
        run: pnpm --filter "frontend^..." run build

      - name: Prepare report output
        if: steps.check-base-visualizer.outputs.supported == 'true'
        run: mkdir -p "$RUNNER_TEMP/frontend-bundle-report"

      - name: Build frontend report for base
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: before
        env:
          FRONTEND_BUNDLE_VISUALIZER: 'true'
          FRONTEND_BUNDLE_VISUALIZER_FILE: ${{ runner.temp }}/frontend-bundle-report/before-stats.json
        run: pnpm --filter frontend run build

      - name: Install dependencies for pull request
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: after
        run: pnpm i --frozen-lockfile

      - name: Build frontend dependencies for pull request
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: after
        run: pnpm --filter "frontend^..." run build

      - name: Build frontend report for pull request
        if: steps.check-base-visualizer.outputs.supported == 'true'
        working-directory: after
        env:
          FRONTEND_BUNDLE_VISUALIZER: 'true'
          FRONTEND_BUNDLE_VISUALIZER_FILE: ${{ runner.temp }}/frontend-bundle-report/after-stats.json
          FRONTEND_BUNDLE_VISUALIZER_HTML_FILE: ${{ runner.temp }}/frontend-bundle-report/frontend-bundle-visualizer.html
        run: pnpm --filter frontend run build

      - name: Upload bundle visualizer
        if: steps.check-base-visualizer.outputs.supported == 'true'
        id: upload-bundle-visualizer
        uses: actions/upload-artifact@v7
        with:
          name: frontend-bundle-visualizer
          path: ${{ runner.temp }}/frontend-bundle-report/frontend-bundle-visualizer.html
          if-no-files-found: error
          archive: false
          retention-days: 7

      - name: Generate report markdown
        if: steps.check-base-visualizer.outputs.supported == 'true'
        shell: bash
        env:
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          FRONTEND_BUNDLE_REPORT_ARTIFACT_URL: ${{ steps.upload-bundle-visualizer.outputs.artifact-url }}
        run: |
          REPORT_DIR="$RUNNER_TEMP/frontend-bundle-report"
          node after/.github/scripts/frontend-js-size.mts before after "$REPORT_DIR/before-stats.json" "$REPORT_DIR/after-stats.json" "$REPORT_DIR/frontend-js-size-report.md"
          printf '%s\n' "$PR_NUMBER" > "$REPORT_DIR/pr-number.txt"
          printf '%s\n' "$BASE_SHA" > "$REPORT_DIR/base-sha.txt"
          printf '%s\n' "$HEAD_SHA" > "$REPORT_DIR/head-sha.txt"
          printf '%s\n' "${{ github.event.pull_request.html_url }}" > "$REPORT_DIR/pr-url.txt"

      - name: Check report
        if: steps.check-base-visualizer.outputs.supported == 'true'
        run: |
          REPORT_DIR="$RUNNER_TEMP/frontend-bundle-report"
          test -s "$REPORT_DIR/before-stats.json"
          test -s "$REPORT_DIR/after-stats.json"
          test -s "$REPORT_DIR/frontend-js-size-report.md"
          cat "$REPORT_DIR/frontend-js-size-report.md" >> "$GITHUB_STEP_SUMMARY"

      - name: Upload bundle report
        if: steps.check-base-visualizer.outputs.supported == 'true'
        uses: actions/upload-artifact@v7
        with:
          name: frontend-bundle-report
          path: ${{ runner.temp }}/frontend-bundle-report/
          if-no-files-found: error
          retention-days: 7