#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
UPSTREAM_DIR="$ROOT_DIR/../linuxcnc"
VENDOR_DIR="$ROOT_DIR/vendor/linuxcnc"
MANIFEST_FILE="$ROOT_DIR/tools/source-manifest.txt"

copy_file() {
  local src_rel="$1"
  local src="$UPSTREAM_DIR/$src_rel"
  local dst="$VENDOR_DIR/$src_rel"

  if [[ ! -f "$src" ]]; then
    echo "missing upstream file: $src" >&2
    exit 1
  fi

  mkdir -p "$(dirname "$dst")"
  cp "$src" "$dst"
  echo "copied $src_rel"
}

if [[ ! -f "$MANIFEST_FILE" ]]; then
  echo "missing manifest: $MANIFEST_FILE" >&2
  exit 1
fi

while IFS= read -r src_rel; do
  [[ -z "$src_rel" ]] && continue
  [[ "${src_rel:0:1}" == "#" ]] && continue
  copy_file "$src_rel"
done < "$MANIFEST_FILE"

echo "extraction complete"