name: 'Scan Patch Rejects'
description: 'Collects .rej files into patch-rejects directory and outputs count'
outputs:
  rej_count:
    value: ${{ steps.scan.outputs.rej_count }}

runs:
  using: composite
  steps:
    - id: scan
      shell: bash
      run: |
        set -euo pipefail

        CONFIG_DIR="$GITHUB_WORKSPACE/kernel"
        REJECTS_DIR="$GITHUB_WORKSPACE/patch-rejects"
        mkdir -p "$REJECTS_DIR"
        mapfile -t REJS < <(find "$CONFIG_DIR" -type f -name '*.rej')
        REJ_COUNT=${#REJS[@]}
        echo "REJ_COUNT=$REJ_COUNT" >> "$GITHUB_ENV"
        echo "rej_count=$REJ_COUNT" >> "$GITHUB_OUTPUT"

        if [ "$REJ_COUNT" -gt 0 ]; then
          for REJ in "${REJS[@]}"; do
            REL="${REJ#"$CONFIG_DIR"/}"
            DEST="$REJECTS_DIR/$REL"
            mkdir -p "$(dirname "$DEST")"
            cp "$REJ" "$DEST"
            ORIG="${REJ%.rej}"
            if [ -f "$ORIG" ]; then
              ORIG_DEST="$REJECTS_DIR/${REL%.rej}"
              mkdir -p "$(dirname "$ORIG_DEST")"
              cp "$ORIG" "$ORIG_DEST"
            fi
            echo "$REL" >> "$REJECTS_DIR/index.txt"
          done
        fi