提交

web-admin/src/utils/protocol-pay-mode-switch.ts

@@ -1,5 +1,5 @@
 /**
- * 采集协议单 · 缴费模式切换（dj ↔ fq）
+ * 采集协议单 · 缴费模式切换（dj / fq / djfq）
  * 规则见 docs/superpowers/specs/2026-06-04-protocol-pay-mode-switch-design.md
  */
 
@@ -8,8 +8,9 @@ import {
   DEFAULT_INSTALLMENT_ADVANCE_DAYS,
   defaultInstallmentAmounts
 } from '@/utils/protocol-payment-installment'
+import { type PayMode, isInstallmentPayMode } from '@/utils/protocol-payment-presets'
 
-export type PayMode = 'dj' | 'fq'
+export type { PayMode }
 export type DetailLike = Record<string, any>
 
 const LOCKED_STATUSES = new Set(['jfqrz', 'yjf', 'tfqrz', 'ytf'])
@@ -69,6 +70,35 @@ function countByStatus(details: DetailLike[], status: string): number {
   return details.filter((d) => String(d.payStatus || 'dfj') === status).length
 }
 
+function buildInstallmentDetails(
+  ctx: PayModeSwitchContext,
+  rows: DetailLike[]
+): DetailLike[] {
+  const count = Number(ctx.installmentCount) || 6
+  const interval = Number(ctx.installmentIntervalMonths) || 6
+  const startDate = ctx.installmentStartDate || ''
+  const advanceDays = Number(ctx.installmentAdvanceDays ?? DEFAULT_INSTALLMENT_ADVANCE_DAYS)
+  const amounts =
+    ctx.installmentRatios?.length && sumPaidAmount(rows) === 0
+      ? ctx.installmentRatios.map((v) => Number(v || 0))
+      : defaultInstallmentAmounts(ctx.contractAmount, count)
+  const result: DetailLike[] = []
+  for (let i = 0; i < count; i++) {
+    result.push(
+      createPaymentDetailRow({
+        dueAmount: amounts[i] ?? null,
+        installmentNo: i + 1,
+        installmentDueDate:
+          startDate && interval
+            ? calcFqInstallmentDueDate(startDate, i, interval, advanceDays)
+            : '',
+        expanded: i === 0
+      })
+    )
+  }
+  return result
+}
+
 export function createPaymentDetailRow(options: {
   dueAmount: number | null
   installmentDueDate?: string
@@ -110,7 +140,7 @@ export function evaluatePayModeSwitch(
     }
   }
 
-  if (fromMode === 'dj' && toMode === 'fq') {
+  if (fromMode === 'dj' && isInstallmentPayMode(toMode)) {
     if (rows.some((d) => isPayDetailLocked(d))) {
       return {
         action: 'blocked',
@@ -118,13 +148,14 @@ export function evaluatePayModeSwitch(
       }
     }
     const count = ctx.installmentCount || 6
+    const label = toMode === 'djfq' ? '趸交+分期' : '分期'
     return {
       action: 'confirm',
-      summary: `将清除当前趸交计划，按 ${count} 期分期重新生成缴费明细。是否继续？`
+      summary: `将清除当前趸交计划，按 ${count} 期${label}重新生成缴费明细。是否继续？`
     }
   }
 
-  if (fromMode === 'fq' && toMode === 'dj') {
+  if (isInstallmentPayMode(fromMode) && toMode === 'dj') {
     const dfjCount = countByStatus(rows, 'dfj')
     const yjfCount = countByStatus(rows, 'yjf')
 
@@ -156,6 +187,21 @@ export function evaluatePayModeSwitch(
     }
   }
 
+  if (isInstallmentPayMode(fromMode) && isInstallmentPayMode(toMode) && fromMode !== toMode) {
+    if (rows.some((d) => isPayDetailLocked(d))) {
+      return {
+        action: 'blocked',
+        reason: '分期已有缴费记录，无法切换分期类型。'
+      }
+    }
+    const count = ctx.installmentCount || 6
+    const label = toMode === 'djfq' ? '趸交+分期' : '分期'
+    return {
+      action: 'confirm',
+      summary: `将按 ${count} 期${label}重新生成缴费明细。是否继续？`
+    }
+  }
+
   return { action: 'noop' }
 }
 
@@ -167,33 +213,11 @@ export function applyPayModeSwitch(
 ): DetailLike[] {
   const rows = activeDetails(details)
 
-  if (fromMode === 'dj' && toMode === 'fq') {
-    const count = Number(ctx.installmentCount) || 6
-    const interval = Number(ctx.installmentIntervalMonths) || 6
-    const startDate = ctx.installmentStartDate || ''
-    const advanceDays = Number(ctx.installmentAdvanceDays ?? DEFAULT_INSTALLMENT_ADVANCE_DAYS)
-    const amounts =
-      ctx.installmentRatios?.length && sumPaidAmount(rows) === 0
-        ? ctx.installmentRatios.map((v) => Number(v || 0))
-        : defaultInstallmentAmounts(ctx.contractAmount, count)
-    const result: DetailLike[] = []
-    for (let i = 0; i < count; i++) {
-      result.push(
-        createPaymentDetailRow({
-          dueAmount: amounts[i] ?? null,
-          installmentNo: i + 1,
-          installmentDueDate:
-            startDate && interval
-              ? calcFqInstallmentDueDate(startDate, i, interval, advanceDays)
-              : '',
-          expanded: i === 0
-        })
-      )
-    }
-    return result
+  if (fromMode === 'dj' && isInstallmentPayMode(toMode)) {
+    return buildInstallmentDetails(ctx, rows)
   }
 
-  if (fromMode === 'fq' && toMode === 'dj') {
+  if (isInstallmentPayMode(fromMode) && toMode === 'dj') {
     const yjfRows = rows
       .filter((d) => String(d.payStatus) === 'yjf')
       .map((d) => ({ ...d, _payModeLocked: true }))
@@ -209,14 +233,14 @@ export function applyPayModeSwitch(
     return [...yjfRows, newDjRow]
   }
 
+  if (isInstallmentPayMode(fromMode) && isInstallmentPayMode(toMode) && fromMode !== toMode) {
+    return buildInstallmentDetails(ctx, rows)
+  }
+
   return rows
 }
 
-/** 趸交模式下是否还可添加待缴明细 */
-export function canAddPaymentDetail(payMode: string, details: DetailLike[]): boolean {
-  if (payMode === 'fq') return true
-  const dfjCount = details.filter(
-    (d) => !isPayDetailLocked(d) && String(d.payStatus || 'dfj') === 'dfj'
-  ).length
-  return dfjCount < 1
+/** 趸交与分期均允许多条缴费明细（合计须等于合同金额） */
+export function canAddPaymentDetail(_payMode: string, _details: DetailLike[]): boolean {
+  return true
 }