/** 采集协议单 · 缴费模式工具（已废除硬编码价目表） */

export type PayMode = 'dj' | 'fq' | 'djfq' | 'fgd'

export function getActiveSampleCount(samples: Array<{ sampleStatus?: string }>): 1 | 2 {
  const n = samples.filter((s) => String(s.sampleStatus || '') !== 'yzf').length
  return (n >= 2 ? 2 : 1) as 1 | 2
}

export function isInstallmentPayMode(payMode: string): boolean {
  return payMode === 'fq' || payMode === 'djfq'
}

/** 需要配置多期 schedule 的模式（分期 / 趸交+分期 / 分改趸） */
export function isMultiSchedulePayMode(payMode: string): boolean {
  return payMode === 'fq' || payMode === 'djfq' || payMode === 'fgd'
}

export function availablePayModes(sampleCount: 1 | 2): PayMode[] {
  return sampleCount === 2 ? ['dj', 'djfq', 'fq', 'fgd'] : ['dj', 'fq', 'fgd']
}

/** 校验缴费模式与样本数是否匹配（如 djfq 仅双样本） */
export function isPayModeValidForSampleCount(payMode: PayMode, sampleCount: 1 | 2): boolean {
  return availablePayModes(sampleCount).includes(payMode)
}