import type { DistributionRule } from '@/features/admin/api/adminDistribution'

export const DISTRIBUTION_MODES = [
  {
    value: 'two_party_distributor_receive',
    label: '两方 · 分站收号',
    hint: '主站下单，货在分站',
  },
  {
    value: 'two_party_platform_receive',
    label: '两方 · 分站卖出',
    hint: '分站卖主站货',
  },
  {
    value: 'three_party',
    label: '三方分账',
    hint: '分站卖另一分站的货',
  },
  {
    value: 'site_self_sell',
    label: '本站自卖',
    hint: '分站卖本站货，卖出站拿 75%',
  },
] as const

const MODE_LABELS: Record<string, string> = Object.fromEntries(
  DISTRIBUTION_MODES.map(item => [item.value, item.label])
)

const PARTY_ROLE_LABELS: Record<string, string> = {
  distributor_receive: '分站收号',
  platform_sell: '主站卖出',
  platform_receive: '主站收号',
  distributor_sell: '分站卖出',
  distributor_a: '收号站',
  distributor_b: '卖出站',
}

export function distributionModeLabel(mode?: string) {
  if (!mode) return '-'
  return MODE_LABELS[mode] || mode
}

export function distributionPartyRoleLabel(role?: string) {
  if (!role) return '-'
  return PARTY_ROLE_LABELS[role] || role
}

export function formatRatioPercent(value?: number) {
  const n = Number(value || 0)
  return `${n.toFixed(n % 1 === 0 ? 0 : 1)}%`
}

export function ruleSplitParts(rule: DistributionRule) {
  switch (rule.mode) {
    case 'two_party_distributor_receive':
      return [
        { label: '分站收号', value: formatRatioPercent(rule.distributor_receive_ratio) },
        { label: '主站卖出', value: formatRatioPercent(rule.platform_sell_ratio) },
      ]
    case 'two_party_platform_receive':
      return [
        { label: '主站收号', value: formatRatioPercent(rule.platform_receive_ratio) },
        { label: '分站卖出', value: formatRatioPercent(rule.distributor_sell_ratio) },
      ]
    case 'three_party':
      return [
        { label: '收号站', value: formatRatioPercent(rule.distributor_a_ratio) },
        { label: '卖出站', value: formatRatioPercent(rule.distributor_b_ratio) },
      ]
    case 'site_self_sell':
      return [{ label: '本站卖出', value: formatRatioPercent(rule.distributor_sell_ratio) }]
    default:
      return []
  }
}

export function formatServiceFee(
  rule: Pick<DistributionRule, 'service_fee_value' | 'service_fee_unit'>
) {
  if (rule.service_fee_unit === 'fixed_amount') {
    return `${Number(rule.service_fee_value || 0).toFixed(2)} 元/单`
  }
  return formatRatioPercent(rule.service_fee_value)
}

export function settlementBatchKind(batchNo?: string) {
  if (batchNo?.startsWith('DA')) {
    return { label: '自动释放', type: 'success' as const }
  }
  if (batchNo?.startsWith('DS')) {
    return { label: '人工批次', type: 'warning' as const }
  }
  return { label: '结算批次', type: 'info' as const }
}

export function distributorReleaseLabel(row: {
  distributor_settlement_status?: string
  release_at?: string
}) {
  if (row.distributor_settlement_status === 'settled') {
    return { label: '已释放入账', type: 'success' as const }
  }
  if (row.distributor_settlement_status === 'pending' && row.release_at) {
    const date = new Date(row.release_at)
    const text = Number.isNaN(date.getTime())
      ? '待释放'
      : `待释放 ${date.toLocaleDateString('zh-CN', { month: 'numeric', day: 'numeric' })}`
    return { label: text, type: 'warning' as const }
  }
  if (row.distributor_settlement_status === 'pending') {
    return { label: '待释放', type: 'info' as const }
  }
  return { label: '未进入释放', type: 'info' as const }
}