const SOURCE_LABELS: Record<string, string> = {
  api_server: 'API',
  bluebubbles: 'iMessage',
  cli: 'CLI',
  codex: 'Codex',
  desktop: 'Desktop',
  discord: 'Discord',
  email: 'Email',
  gateway: 'Gateway',
  local: 'Local',
  matrix: 'Matrix',
  mattermost: 'Mattermost',
  qqbot: 'QQ',
  signal: 'Signal',
  slack: 'Slack',
  sms: 'SMS',
  telegram: 'Telegram',
  tui: 'TUI',
  webhook: 'Webhook',
  weixin: 'WeChat',
  whatsapp: 'WhatsApp',
  yuanbao: 'Yuanbao'
}

const SOURCE_ALIASES: Record<string, string[]> = {
  bluebubbles: ['apple messages', 'imessage'],
  cli: ['terminal'],
  desktop: ['app', 'gui'],
  local: ['machine'],
  qqbot: ['qq'],
  telegram: ['tg'],
  tui: ['terminal'],
  weixin: ['wechat'],
  whatsapp: ['wa']
}

export function normalizeSessionSource(source: null | string | undefined): string | null {
  const id = source?.trim().toLowerCase()

  return id || null
}

export function sessionSourceLabel(source: null | string | undefined): string | null {
  const id = normalizeSessionSource(source)

  if (!id) {
    return null
  }

  return SOURCE_LABELS[id] || id.replace(/[_-]+/g, ' ').replace(/\b\w/g, char => char.toUpperCase())
}

export function sessionSourceSearchTerms(source: null | string | undefined): string[] {
  const id = normalizeSessionSource(source)
  const label = sessionSourceLabel(id)

  if (!id) {
    return []
  }

  return [id, label ?? '', ...(SOURCE_ALIASES[id] ?? [])].filter(Boolean)
}