/**
 * Makes youth teams identifiable while retaining the team name supplied by
 * click-TT. Age groups occur in a few forms, for example "Jugend 13",
 * "Jugend 13 1. Kreisklasse", and "J13".
 */
export function youthTeamCode(teamAgeGroup, teamName = '') {
  const ageGroup = String(teamAgeGroup || '').trim()
  const name = String(teamName || '').trim()
  const codeMatch = ageGroup.match(/\b(?:jugend\s*|j\s*)(\d{1,2})\b/i)

  if (codeMatch) return `J${codeMatch[1]}`
  if (/\bjugend\b/i.test(ageGroup) || /\bjugend\b/i.test(name)) return 'J'
  return ''
}

export function formatTeamDisplayName(teamName, teamAgeGroup) {
  const name = String(teamName || '').trim()
  if (!name) return ''

  const youthCode = youthTeamCode(teamAgeGroup, name)
  return youthCode ? `(${youthCode}) ${name}` : name
}