skins/.gitea/workflows/actions/generate-previews/action.yml

name: "Generate Previews"
description: "Generate Danser videos, screenshots, thumbnails, and rename them based on skin.ini"

inputs:
  changed_skins_file:
    description: "Path to file with changed skins"
    required: true

runs:
  using: "composite"
  steps:
    - name: Generate Danser videos and screenshots
      shell: bash
      run: |
        echo "[Danser Job Started]"

        if [ -z "${{ inputs.changed_skins_file }}" ] || [ ! -s "${{ inputs.changed_skins_file }}" ]; then
          echo "No skins changed. Skipping generation."
          exit 0
        fi

        mapfile -t skins < "${{ inputs.changed_skins_file }}"
        [ "${#skins[@]}" -eq 0 ] && { echo "No skins to process. Exiting."; exit 0; }

        SKIN_COUNT=${#skins[@]}
        INDEX=1

        sanitize_filename() {
          echo "$1" | \
            tr -d '\000-\037' | \
            sed -e 's#[\\/:\*\?"<>|]#-#g' | \
            sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
        }

        for skin_path in "${skins[@]}"; do
          [ -z "$skin_path" ] && continue
          SKIN_DIR="$DANSER_SKINS_DIR/$skin_path"
          [ ! -d "$SKIN_DIR" ] && { echo "Skipping missing skin: $skin_path"; continue; }

          SKIN_NAME="$skin_path"
          OUT_VIDEO_DIR="$REPO_SCREENSHOT_DIR/$SKIN_NAME"
          OUT_PNG_DIR="$REPO_RANKING_PANEL_DIR/$SKIN_NAME"
          OUT_THUMBNAIL_DIR="$REPO_THUMBNAIL_DIR/$SKIN_NAME"

          echo ""
          echo "[$INDEX/$SKIN_COUNT] Generating for skin: $SKIN_NAME"

          LOGFILE="/tmp/danser_log_$INDEX.txt"

          echo "    → Generating video..."
          if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
            -replay "$GAMEPLAY_REPLAY_PATH" -record -skip -start=300 -end=307 -noupdatecheck \
            -out="$SKIN_NAME" -skin="$SKIN_NAME" -settings="skinhub" >"$LOGFILE" 2>&1; then
            echo "    ✖ Video failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
          fi

          if [ -f "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" ]; then
            echo "    → Trimming MP4 with ffmpeg..."
            ffmpeg -hide_banner -loglevel error \
              -ss 5 -t 6.5 \
              -i "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" \
              -c:v h264_nvenc -preset fast \
              -c:a aac -b:a 128k \
              "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4"

            if [ -f "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4" ]; then
              mv "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4" "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4"
              mkdir -p "$OUT_VIDEO_DIR"
              mv "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" "$OUT_VIDEO_DIR/$SKIN_NAME.mp4"
              echo "    ✓ Trimmed MP4 moved to $OUT_VIDEO_DIR/"
            else
              echo "    ✖ ffmpeg trimming failed for $SKIN_NAME"
            fi
          else
            echo "    ✖ No MP4 found for $SKIN_NAME"
          fi

          echo "    → Taking screenshot..."
          if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
            -replay "$PANEL_REPLAY_PATH" -skip -settings="skinhub" -noupdatecheck -ss 28 \
            -out="$SKIN_NAME" -skin="$SKIN_NAME" >>"$LOGFILE" 2>&1; then
            echo "    ✖ Screenshot failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
          fi

          if [ -f "$DANSER_SCREENSHOT_DIR/$SKIN_NAME.png" ]; then
            mkdir -p "$OUT_PNG_DIR"
            mv "$DANSER_SCREENSHOT_DIR/$SKIN_NAME.png" "$OUT_PNG_DIR/$SKIN_NAME.png"
            echo "    ✓ PNG moved to $OUT_PNG_DIR/"
          else
            echo "    ✖ No PNG found for $SKIN_NAME"
          fi

          echo "    → Taking thumbnail screenshot..."
          if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
            -replay "$THUMBNAIL_REPLAY_PATH" -skip -settings="skinhub" -noupdatecheck -ss 1.3 \
            -out="${SKIN_NAME}_thumb" -skin="$SKIN_NAME" >>"$LOGFILE" 2>&1; then
            echo "    ✖ Thumbnail screenshot failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
          fi

          if [ -f "$DANSER_SCREENSHOT_DIR/${SKIN_NAME}_thumb.png" ]; then
            mkdir -p "$OUT_THUMBNAIL_DIR"
            mv "$DANSER_SCREENSHOT_DIR/${SKIN_NAME}_thumb.png" "$OUT_THUMBNAIL_DIR/$SKIN_NAME.png"
            echo "    ✓ Thumbnail PNG moved to $OUT_THUMBNAIL_DIR/"
          else
            echo "    ✖ No thumbnail PNG found for $SKIN_NAME"
          fi

          # --- Renaming Section ---
          skin_header="$SKIN_NAME"
          ini_file=$(find "$SKIN_DIR" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
          if [ -f "$ini_file" ]; then
            name_line=$(grep -i '^[[:space:]]*Name:' "$ini_file" | head -n1 || true)
            if [ -n "$name_line" ]; then
              val="${name_line#*:}"
              val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
              if [ -n "$val" ]; then
                sanitized="$(sanitize_filename "$val")"
                [ -n "$sanitized" ] && skin_header="$sanitized"
              fi
            fi
          fi

          VIDEO_DIR="$REPO_SCREENSHOT_DIR/$SKIN_DIR_NAME"
          PNG_DIR="$REPO_RANKING_PANEL_DIR/$SKIN_DIR_NAME"
          THUMBNAIL_DIR="$REPO_THUMBNAIL_DIR/$SKIN_DIR_NAME"

          if [ -f "$VIDEO_DIR/$SKIN_DIR_NAME.mp4" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
            mv -f "$VIDEO_DIR/$SKIN_DIR_NAME.mp4" \
                  "$VIDEO_DIR/$skin_header.mp4" || true
            echo "    ✓ Renamed MP4 to $VIDEO_DIR/$skin_header.mp4"
          fi

          if [ -f "$PNG_DIR/$SKIN_DIR_NAME.png" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
            mv -f "$PNG_DIR/$SKIN_DIR_NAME.png" \
                  "$PNG_DIR/$skin_header.png" || true
            echo "    ✓ Renamed PNG to $PNG_DIR/$skin_header.png"
          fi

          if [ -f "$THUMBNAIL_DIR/$SKIN_DIR_NAME.png" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
            mv -f "$THUMBNAIL_DIR/$SKIN_DIR_NAME.png" \
                  "$THUMBNAIL_DIR/$skin_header.png" || true
            echo "    ✓ Renamed thumbnail to $THUMBNAIL_DIR/$skin_header.png"
          fi

          INDEX=$((INDEX + 1))
        done

        echo ""
        echo "[Danser Job Finished — processed $SKIN_COUNT skins]"