name: Receive @<project>/shared update (Real-time)

on:
  repository_dispatch:
    types: [shared-package-published]

jobs:
  update:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          registry-url: 'https://npm.pkg.github.com'
          scope: '@<project>'

      # RINGKASAN PERUBAHAN TIPE (v1.6.1+): simpan tipe LAMA sebelum update biar bisa dibandingkan.
      # Catatan: sesuaikan path dist/index.d.ts kalau struktur paket berbeda.
      - name: Simpan tipe lama (sebelum update)
        run: |
          cp node_modules/@<project>/shared/dist/index.d.ts /tmp/old-types.d.ts 2>/dev/null || echo "" > /tmp/old-types.d.ts

      - name: Install new shared version
        env:
          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          npm install @<project>/shared@${{ github.event.client_payload.version }}

      - name: Hitung perubahan tipe (apa yang berubah)
        id: typediff
        run: |
          NEW="node_modules/@<project>/shared/dist/index.d.ts"
          DIFF=$(diff /tmp/old-types.d.ts "$NEW" 2>/dev/null | head -50 || true)
          if [ -z "$DIFF" ]; then DIFF="(tidak ada perubahan tipe terdeteksi otomatis - cek pesan commit backend di bawah)"; fi
          {
            echo "summary<<DIFF_EOF"
            echo "$DIFF"
            echo "DIFF_EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Check if breaking change
        id: breaking
        run: |
          IS_BREAKING="${{ github.event.client_payload.is_breaking }}"
          if [ "$IS_BREAKING" = "true" ]; then
            echo "is_breaking=true" >> $GITHUB_OUTPUT
            echo "WARNING: This is a BREAKING change. Manual review required."
          else
            echo "is_breaking=false" >> $GITHUB_OUTPUT
          fi

      - name: Create PR
        id: cpr
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore(deps): bump @<project>/shared to v${{ github.event.client_payload.version }}"
          title: "${{ steps.breaking.outputs.is_breaking == 'true' && '⚠️ BREAKING' || '🔄 Auto' }}-update @<project>/shared to v${{ github.event.client_payload.version }}"
          body: |
            **Triggered by**: Backend publish (real-time)
            **Version**: v${{ github.event.client_payload.version }}
            **Breaking**: ${{ github.event.client_payload.is_breaking }}
            **Backend commit**: [`${{ github.event.client_payload.commit }}`](${{ github.event.client_payload.changelog_url }})

            ## Backend Commit Message
            \`\`\`
            ${{ github.event.client_payload.commit_message }}
            \`\`\`

            ## Apa yang berubah di tipe data (otomatis)
            \`\`\`diff
            ${{ steps.typediff.outputs.summary }}
            \`\`\`

            ## Action Required

            **Untuk Frontend Staff**:
            1. Pull branch ini di local
            2. Test halaman yang affected (kalau yakin breaking change)
            3. Approve + merge kalau OK

            **Untuk Owner (if BREAKING)**:
            - JANGAN auto-merge
            - Review backend commit dulu
            - Test di staging
            - Plan rollback kalau perlu

            ## Auto-Generated
            Latency: 3-5 menit dari backend publish.
            Workflow: `.github/workflows/receive-shared-update.yml`
          branch: auto/shared-update-${{ github.event.client_payload.version }}
          delete-branch: true
          labels: |
            auto-update
            shared-types
            ${{ steps.breaking.outputs.is_breaking == 'true' && 'breaking-change' || '' }}

      - name: Notify Discord (optional)
        if: env.DISCORD_WEBHOOK_FRONTEND != ''
        env:
          DISCORD_WEBHOOK_FRONTEND: ${{ secrets.DISCORD_WEBHOOK_FRONTEND }}
        run: |
          if [ "${{ steps.breaking.outputs.is_breaking }}" = "true" ]; then
            EMOJI=":warning:"
            TITLE="BREAKING change PR ready"
          else
            EMOJI=":arrows_counterclockwise:"
            TITLE="Auto-update PR ready"
          fi
          curl -X POST -H 'Content-Type: application/json' \\
            -d "{\"content\":\"$EMOJI **$TITLE**\\n@<project>/shared v${{ github.event.client_payload.version }}\\nPR: ${{ steps.cpr.outputs.pull-request-url }}\"}" \\
            "$DISCORD_WEBHOOK_FRONTEND"

# Setup:
# Save sebagai .github/workflows/receive-shared-update.yml di repo FRONTEND kamu (mis. <project>-frontend).
# Default secrets (no setup needed):
#   - GITHUB_TOKEN (auto-provided by GitHub Actions)
# Optional secret untuk Discord:
#   - DISCORD_WEBHOOK_FRONTEND
#
# Replace placeholder:
# - <project> → project name (e.g. akses)