// web-admin/src/utils/pl-batch-print.ts
import type { Plan, PlanProduct } from '@/api/pl'
import type { PlPrintSlipCommand } from '@/utils/pl-display'

export type SlipPlanProduct = PlanProduct & { slipPlanNo?: string }

export function normalizeCustomerName(name?: string | null) {
  return String(name || '').trim()
}

export function canBatchPrintSlip(
  plans: Array<Pick<Plan, 'customerName' | 'planDate'>>,
  command: PlPrintSlipCommand
): { ok: boolean; reason?: string } {
  if (!plans?.length) return { ok: false, reason: '请先勾选运输计划' }

  if (plans.length === 1) {
    return { ok: true }
  }

  if (command === 'inbound' || command === 'delivery') {
    const c = normalizeCustomerName(plans[0].customerName)
    const d = plans[0].planDate
    const slipLabel = command === 'inbound' ? '入库单' : '送(提)货单'
    if (!c || !d || !plans.every((p) => normalizeCustomerName(p.customerName) === c && p.planDate === d)) {
      return {
        ok: false,
        reason: `合打${slipLabel}要求：客户名称一致且计划日期一致`
      }
    }
    return { ok: true }
  }

  if (command === 'subpack') {
    return { ok: true }
  }

  return { ok: false, reason: '未知单据类型' }
}

export function mergeBatchPrintRemarks(plans: Array<Pick<Plan, 'planNo' | 'remark'>>) {
  return plans
    .map((p) => {
      const text = String(p.remark || '').trim()
      if (!text) return ''
      return `${p.planNo}：${text}`
    })
    .filter(Boolean)
    .join('\n')
}

/** 备注写入 HTML 模版时换行 */
export function formatRemarkForSlipHtml(remark?: string | null) {
  return String(remark || '')
    .replace(/&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/\n/g, '<br />')
}

/** 合打视图：首条为抬头基准；产品展开并打 slipPlanNo；清空车辆；备注合并 */
export function buildBatchPrintPlanView(plans: Plan[]): Plan {
  if (!plans.length) throw new Error('plans empty')
  const base = { ...plans[0] }
  const products: SlipPlanProduct[] = []
  for (const p of plans) {
    for (const prod of p.products || []) {
      products.push({ ...prod, slipPlanNo: p.planNo })
    }
  }
  base.products = products
  base.remark = mergeBatchPrintRemarks(plans)
  base.licensePlate = undefined
  base.vehicleId = undefined
  base.driverId = undefined
  base.driverName = undefined
  base.trailerNo = undefined
  base.personnelSummary = undefined
  return base
}

export function normalizePlanIds(planIdOrIds: string | string[]): string[] {
  const ids = Array.isArray(planIdOrIds) ? planIdOrIds : [planIdOrIds]
  return ids.map((id) => String(id || '').trim()).filter(Boolean)
}