rename-assets.yml

name: Auto Rename Assets

on:
  pull_request:
    types: [opened, synchronize, reopened]
    paths:
      - 'assets/**'

jobs:
  rename-assets:
    name: Rename & Index Assets
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout PR branch
        uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Rename assets by type with index
        id: rename
        run: |
          ASSETS_DIR="assets"
          RENAMED=0
          SUMMARY=""

          # Mapping ekstensi ke kategori
          declare -A EXT_MAP=(
            # Image
            [jpg]="image"   [jpeg]="image"  [png]="image"
            [gif]="image"   [webp]="image"  [svg]="image"
            [bmp]="image"   [tiff]="image"  [ico]="image"
            # Video
            [mp4]="video"   [mov]="video"   [avi]="video"
            [mkv]="video"   [webm]="video"  [flv]="video"
            [wmv]="video"   [m4v]="video"
            # Audio
            [mp3]="audio"   [wav]="audio"   [aac]="audio"
            [ogg]="audio"   [flac]="audio"  [m4a]="audio"
            [wma]="audio"   [opus]="audio"
            # Document
            [pdf]="doc"     [doc]="doc"     [docx]="doc"
            [xls]="doc"     [xlsx]="doc"    [ppt]="doc"
            [pptx]="doc"    [txt]="doc"     [csv]="doc"
            # Archive
            [zip]="archive" [rar]="archive" [tar]="archive"
            [gz]="archive"  [7z]="archive"
          )

          # Hitung counter per kategori dari file yang sudah terindex
          declare -A COUNTERS
          for category in image video audio doc archive; do
            COUNTERS[$category]=0
          done

          # Scan file yang SUDAH berformat {category}-{angka}.ext untuk ambil counter tertinggi
          while IFS= read -r -d '' file; do
            filename=$(basename "$file")
            ext="${filename##*.}"
            ext_lower="${ext,,}"
            base="${filename%.*}"
            category="${EXT_MAP[$ext_lower]}"
            [ -z "$category" ] && continue

            if [[ "$base" =~ ^${category}-([0-9]+)$ ]]; then
              num="${BASH_REMATCH[1]}"
              if (( num > COUNTERS[$category] )); then
                COUNTERS[$category]=$num
              fi
            fi
          done < <(find "$ASSETS_DIR" -maxdepth 1 -type f -print0 | sort -z)

          echo "Counter awal per kategori:"
          for cat in "${!COUNTERS[@]}"; do echo "  $cat: ${COUNTERS[$cat]}"; done

          # Rename file yang BELUM berformat {category}-{angka}.ext
          while IFS= read -r -d '' file; do
            filename=$(basename "$file")
            ext="${filename##*.}"
            ext_lower="${ext,,}"
            base="${filename%.*}"
            category="${EXT_MAP[$ext_lower]}"

            # Skip ekstensi tidak dikenal
            if [ -z "$category" ]; then
              echo "Skip (ekstensi tidak dikenal): $filename"
              continue
            fi

            # Skip jika sudah berformat benar
            if [[ "$base" =~ ^${category}-[0-9]+$ ]]; then
              echo "Sudah terindex, skip: $filename"
              continue
            fi

            # Naikkan counter dan tentukan nama baru
            COUNTERS[$category]=$(( COUNTERS[$category] + 1 ))
            new_name="${category}-${COUNTERS[$category]}.${ext_lower}"
            new_path="${ASSETS_DIR}/${new_name}"

            # Hindari overwrite jika nama baru sudah ada
            while [ -f "$new_path" ]; do
              COUNTERS[$category]=$(( COUNTERS[$category] + 1 ))
              new_name="${category}-${COUNTERS[$category]}.${ext_lower}"
              new_path="${ASSETS_DIR}/${new_name}"
            done

            git mv "$file" "$new_path"
            echo "Renamed: $filename -> $new_name"
            SUMMARY="${SUMMARY}\n- \`${filename}\` → \`${new_name}\`"
            RENAMED=$(( RENAMED + 1 ))

          done < <(find "$ASSETS_DIR" -maxdepth 1 -type f -print0 | sort -z)

          echo "renamed_count=$RENAMED" >> $GITHUB_OUTPUT
          echo -e "$SUMMARY" > /tmp/rename_summary.txt

      - name: Commit renamed assets
        if: steps.rename.outputs.renamed_count != '0'
        run: |
          git config user.name  "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git commit -m "chore(assets): auto-rename ${{ steps.rename.outputs.renamed_count }} asset(s) dengan format terindex"
          git push origin HEAD:${{ github.head_ref }}

      - name: Komentar hasil rename di PR
        if: steps.rename.outputs.renamed_count != '0'
        run: |
          SUMMARY=$(cat /tmp/rename_summary.txt)
          gh pr comment ${{ github.event.pull_request.number }} \
            --body "### Auto Rename Assets

          **${{ steps.rename.outputs.renamed_count }} file** berhasil di-rename secara otomatis:

          ${SUMMARY}

          > Perubahan sudah di-commit ke branch ini."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Komentar jika tidak ada yang perlu di-rename
        if: steps.rename.outputs.renamed_count == '0'
        run: |
          gh pr comment ${{ github.event.pull_request.number }} \
            --body "### Auto Rename Assets

          Semua asset di \`assets/\` sudah menggunakan format terindex. Tidak ada yang perlu di-rename."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}