/**
 * 司机运输计划单「复制发群」纯文本（不含附件）
 */

const DASH = '—'

function stopTypeOf(stop) {
  return String(stop?.stopType || stop?.stop_type || '').trim()
}

function customerNameOf(stop) {
  const name = String(stop?.customerName || stop?.customer_name || '').trim()
  return name || DASH
}

function formatActualQtyLine(partyLabel, product) {
  const unit = String(product?.unit || '').trim()
  const raw = product?.actualQty ?? product?.actual_qty
  let qtyPart = DASH
  if (raw != null && raw !== '') {
    qtyPart = String(raw)
    if (unit) qtyPart = `${qtyPart} ${unit}`
  }
  return `${partyLabel}：${qtyPart}`
}

function appendQtySection(lines, title, qtyLines) {
  lines.push(title)
  if (!qtyLines.length) {
    lines.push(DASH)
  } else {
    lines.push(...qtyLines)
  }
}

/**
 * @param {object} page driverPlanApi.get 详情
 * @returns {string}
 */
export function buildDriverPlanCopyText(page = {}) {
  const stops = Array.isArray(page?.stops) ? page.stops : []
  const loadStop = stops.find((s) => stopTypeOf(s) === 'load')
  const deliveryStops = stops.filter((s) => stopTypeOf(s) === 'delivery')

  const lines = [
    `计划编号：${String(page?.planNo || page?.plan_no || '').trim() || DASH}`,
    `装货方：${loadStop ? customerNameOf(loadStop) : DASH}`
  ]

  if (!deliveryStops.length) {
    lines.push(`送货方#1：${DASH}`)
  } else {
    deliveryStops.forEach((stop, index) => {
      lines.push(`送货方#${index + 1}：${customerNameOf(stop)}`)
    })
  }

  const loadQtyLines = []
  if (loadStop) {
    const products = Array.isArray(loadStop.products) ? loadStop.products : []
    products.forEach((product) => {
      loadQtyLines.push(formatActualQtyLine('装货方', product))
    })
  }
  appendQtySection(lines, '实际装货量：', loadQtyLines)

  const deliveryQtyLines = []
  deliveryStops.forEach((stop, index) => {
    const products = Array.isArray(stop?.products) ? stop.products : []
    products.forEach((product) => {
      deliveryQtyLines.push(formatActualQtyLine(`送货方#${index + 1}`, product))
    })
  })
  appendQtySection(lines, '实际送货量：', deliveryQtyLines)

  return lines.join('\n')
}

/** 复制到剪贴板；成功返回 true */
export function copyDriverPlanToClipboard(page) {
  const text = buildDriverPlanCopyText(page)
  if (!text) {
    uni.showToast({ title: '暂无可复制内容', icon: 'none' })
    return Promise.resolve(false)
  }
  return new Promise((resolve) => {
    uni.setClipboardData({
      data: text,
      success: () => {
        uni.showToast({ title: '已复制', icon: 'success' })
        resolve(true)
      },
      fail: () => {
        uni.showToast({ title: '复制失败', icon: 'none' })
        resolve(false)
      }
    })
  })
}