import path from "path";

export function normalizeBackgroundTileId(value, idToSymbol = null) {
  const normalizedId = String(value || "").trim();
  if (!normalizedId) {
    return "";
  }
  if (idToSymbol instanceof Map && idToSymbol.size > 0 && !idToSymbol.has(normalizedId)) {
    return "";
  }
  return normalizedId;
}

export function areRowsOnlyFillChar(rows, fillChar = ".") {
  if (!Array.isArray(rows) || rows.length === 0) {
    return true;
  }
  return rows.every((row) => {
    const normalizedRow = String(row || "");
    return normalizedRow.length === 0 || normalizedRow.split("").every((ch) => ch === fillChar);
  });
}

export function resolveContentPath(contentRoot, relativePath) {
  const normalized = String(relativePath || "").replace(/\\/g, "/").replace(/^\/+/, "");
  return path.resolve(contentRoot, normalized);
}