import { basename } from 'node:path';

export const normalizeNotificationText = (value: string): string =>
  value.replace(/\s+/g, ' ').trim();

export const truncateNotificationText = (value: string, maxLength: number): string => {
  if (value.length <= maxLength) {
    return value;
  }
  return `${value.slice(0, Math.max(1, maxLength - 1)).trimEnd()}…`;
};

export const resolveProjectLabel = (params: {
  repoRoot?: string;
  projectLabel?: string;
}): string | null => {
  const explicit = params.projectLabel
    ? normalizeNotificationText(params.projectLabel)
    : '';
  if (explicit.length > 0) {
    return truncateNotificationText(explicit, 28);
  }
  if (!params.repoRoot) {
    return null;
  }
  const inferred = normalizeNotificationText(basename(params.repoRoot));
  if (inferred.length === 0) {
    return null;
  }
  return truncateNotificationText(inferred, 28);
};