export function sanitizeWikiSlug(value: string): string {
  return value
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-+|-+$/g, '')
    .replace(/-{2,}/g, '-')
}

export function summarizeText(input: string, maxLength = 280): string {
  const normalized = input.replace(/\s+/g, ' ').trim()
  if (!normalized) {
    return 'No summary available.'
  }

  if (normalized.length <= maxLength) {
    return normalized
  }

  return `${normalized.slice(0, maxLength - 1).trimEnd()}…`
}

export function extractTitleFromText(
  fallbackName: string,
  content: string,
): string {
  const firstNonEmptyLine = content
    .split('\n')
    .map(line => line.trim())
    .find(Boolean)

  if (!firstNonEmptyLine) {
    return fallbackName
  }

  return firstNonEmptyLine.replace(/^#+\s*/, '') || fallbackName
}