<!-- 发货单组件 -->
<template>
  <div>
    <div class="waybill-container" ref="waybillRef">
      <!-- 头部信息 -->
      <div class="waybill-header">
        <div class="header-left">
          <span class="label">收货单位：</span>
          <input type="text" class="editable-input transparent-input" v-model="localWaybill.consigneeUnit" />
        </div>
        <div class="header-center">
          <input type="text" class="editable-input date-input transparent-input" v-model="localWaybill.deliveryYear" />
          <span class="label date-label">年</span>
          <input type="text" class="editable-input date-input transparent-input" v-model="localWaybill.deliveryMonth" />
          <span class="label date-label">月</span>  
          <input type="text" class="editable-input date-input transparent-input" v-model="localWaybill.deliveryDay" />
          <span class="label date-label">日</span>
        </div>
        <div class="header-right">
          <span class="label">发货单位：</span>
          <input type="text" class="editable-input transparent-input" v-model="localWaybill.senderUnit" />
        </div>
      </div>

      <!-- 表格 -->
      <table class="waybill-table">
        <thead>
          <tr>
            <th>品名</th>
            <th>切边</th>
            <th>包装</th>
            <th>结算</th>
            <th>原料厂家</th>
            <th>卷号</th>
            <th>规格</th>
            <th>材质</th>
            <th>数量（件）</th>
            <th>重量（kg）</th>
            <th>单价</th>
            <th>备注</th>
          </tr>
        </thead>
        <tbody>
          <!-- 无明细提示 -->
          <tr v-if="localWaybillDetails.length === 0">
            <td colspan="12" class="no-data">
              <div class="no-data-content">
                <el-empty description="暂无发货单明细" />
              </div>
            </td>
          </tr>
          <!-- 明细数据 -->
          <tr v-for="(item, index) in localWaybillDetails" :key="index">
            <td><input type="text" class="transparent-input" v-model="item.productName" /></td>
            <td><input type="text" class="table-input transparent-input" v-model="item.edgeType" />
            </td>
            <td><input type="text" class="table-input transparent-input" v-model="item.packageType" />
            </td>
            <td><input type="text" class="table-input transparent-input" v-model="item.settlementType" />
            </td>
            <td><input type="text" class="table-input transparent-input" v-model="item.rawMaterialFactory" />
            </td>
            <td><input type="text" class="table-input transparent-input" v-model="item.coilNumber" /></td>
            <td><input type="text" class="table-input transparent-input" v-model="item.specification" /></td>
            <td><input type="text" class="table-input transparent-input" v-model="item.material" />
            </td>
            <td><input type="number" class="table-input transparent-input" v-model.number="item.quantity"
                placeholder="0" /></td>
            <td><input type="number" class="table-input transparent-input" v-model.number="item.weight"
                placeholder="0.00" /></td>
            <td><input type="number" class="table-input transparent-input" v-model.number="item.unitPrice"
                placeholder="0.00" /></td>
            <td>
              <div class="table-cell-with-action">
                <input type="text" class="table-input transparent-input" v-model="item.remark" />
              </div>
            </td>
          </tr>
        </tbody>
      </table>



      <!-- 备注说明 -->
      <div class="waybill-remarks">
        <p>1、品名：冷硬钢卷（酸连轧）、冷轧钢卷（脱脂退火火拉矫）、镀锌卷板，镀锌管料（镀锌分剪料）；2、切边：净边/毛边；3、包装：</p>
        <p>
          裸包：周三径四；简包1：周三径四内外护角；简包2：周三径四+防锈纸；普包：周三径四+内外护角+防锈纸+端护板；精包1：周三径四+内外护角+防锈纸+薄膜+端护板+内外护板；精包2：周三径四+内外护角+防锈纸+薄膜+端护板+内外护板+木托。
        </p>
      </div>

      <!-- 签名栏 -->
      <div class="waybill-footer">
        <div class="footer-item inline">
          <span class="label">销售：</span>
          <input type="text" class="editable-input signature-input transparent-input" />
        </div>
        <div class="footer-item inline">
          <span class="label">发货：</span>
          <input type="text" class="editable-input signature-input transparent-input" />
        </div>
        <div class="footer-item inline">
          <span class="label">磅房：</span>
          <input type="text" class="editable-input signature-input transparent-input" />
        </div>
      </div>
    </div>
    <!-- 操作按钮 -->
    <div class="waybill-actions">
      <el-button type="primary" @click="saveAsImage">保存为图片</el-button>
      <el-button type="success" @click="printWaybill">打印</el-button>
    </div>
  </div>
</template>

<script>
import domtoimage from 'dom-to-image';
import printJS from 'print-js';

export default {
  props: {
    // 组件接收完整的发货单内容, 渲染发货单,这个面板内包括一个保存为图片(已经安装了dom-to-image)和一个打印按钮(已经安装了print-js)
    waybill: {
      type: Object,
      default: () => { }
    },
    waybillDetails: {
      type: Array,
      default: () => []
    }
  },
  data() {
    return {
      // 本地可编辑的发货单数据
      localWaybill: {
        consigneeUnit: '',
        senderUnit: '',
        deliveryYear: '',
        deliveryMonth: '',
        deliveryDay: ''
      },
      // 本地可编辑的发货单明细
      localWaybillDetails: []
    };
  },
  watch: {
    // 监听props变化，更新本地数据
    waybill: {
      handler(newVal) {
        if (newVal) {
          this.localWaybill = {
            consigneeUnit: newVal.consigneeUnit || '',
            senderUnit: newVal.senderUnit || '',
            deliveryYear: this.getYearFromDate(newVal.deliveryTime) || '',
            deliveryMonth: this.getMonthFromDate(newVal.deliveryTime) || '',
            deliveryDay: this.getDayFromDate(newVal.deliveryTime) || ''
          };
        }
      },
      immediate: true,
      deep: true
    },
    waybillDetails: {
      handler(newVal) {
        if (newVal && Array.isArray(newVal)) {
          this.localWaybillDetails = [...newVal];
        } else {
          this.localWaybillDetails = [];
        }
      },
      immediate: true,
      deep: true
    }
  },
  methods: {
    // 从日期字符串中提取年份
    getYearFromDate(dateStr) {
      if (dateStr) {
        const date = new Date(dateStr);
        return date.getFullYear().toString();
      }
      return '';
    },
    // 从日期字符串中提取月份
    getMonthFromDate(dateStr) {
      if (dateStr) {
        const date = new Date(dateStr);
        return (date.getMonth() + 1).toString();
      }
      return '';
    },
    // 从日期字符串中提取日
    getDayFromDate(dateStr) {
      if (dateStr) {
        const date = new Date(dateStr);
        return date.getDate().toString();
      }
      return '';
    },
    // 添加明细
    addDetail() {
      this.localWaybillDetails.push({
        productName: '',
        edgeType: '',
        packageType: '',
        settlementType: '',
        rawMaterialFactory: '',
        coilNumber: '',
        specification: '',
        material: '',
        quantity: 0,
        weight: 0,
        unitPrice: 0,
        remark: ''
      });
    },
    // 删除明细
    deleteDetail(index) {
      this.localWaybillDetails.splice(index, 1);
    },
    // 保存为图片
    saveAsImage() {
      const node = this.$refs.waybillRef;
      domtoimage.toPng(node)
        .then(dataUrl => {
          const link = document.createElement('a');
          link.download = `发货单_${this.waybill.waybillName || this.waybill.waybillNo || Date.now()}.png`;
          link.href = dataUrl;
          link.click();
        })
        .catch(error => {
          console.error('保存图片失败:', error);
          this.$message.error('保存图片失败');
        });
    },
    // 打印发货单
    printWaybill() {
      const node = this.$refs.waybillRef;
      printJS({
        printable: node,
        maxWidth: 1200,
        type: 'html',
        scanStyles: true,
        targetStyles: ['*']
      });
    }
  }
}
</script>

<style scoped>
.waybill-container {
  width: 1200px;
  max-width: 1200px;
  min-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
  background: white;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  font-family: SimSun, serif;
}

/* 头部样式 */
.waybill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  font-size: 16px;
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
}

.header-center {
  display: flex;
  align-items: center;
  gap: 5px;
}

.label {
  font-weight: bold;
  margin-right: 10px;
  display: inline-block;
  width: 80px;
  text-align: right;
  white-space: nowrap;
}

.date-label {
  width: 16px;
}


/* 可编辑输入框样式 */
.editable-input {
  padding: 4px 8px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  font-size: 14px;
  font-family: SimSun, serif;
  outline: none;
  transition: all 0.2s;
  border-bottom: 1px dashed #dcdfe6;
}

.editable-input:focus {
  border-color: #409eff;
}

.date-input {
  width: 60px;
  text-align: center;
  margin-right: 5px;
}

/* 透明输入框样式 */
.transparent-input {
  border: none;
  border-radius: 0;
  background-color: transparent;
}

.transparent-input:focus {
  border-bottom-color: #409eff;
  background-color: rgba(64, 158, 255, 0.05);
}

/* 表格样式 */
.waybill-table {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 12px;
  table-layout: fixed;
}

.waybill-table th,
.waybill-table td {
  border: 1px solid #000;
  box-sizing: border-box;
  line-height: 24px;
  text-align: center;
  vertical-align: middle;
  word-wrap: break-word;
  word-break: break-all;
}

/* 表格列宽设置 */
.waybill-table th:nth-child(1),
.waybill-table td:nth-child(1) {
  width: 80px; /* 品名 */
}

.waybill-table th:nth-child(2),
.waybill-table td:nth-child(2) {
  width: 40px; /* 切边 */
}

.waybill-table th:nth-child(3),
.waybill-table td:nth-child(3) {
  width: 40px; /* 包装 */
}

.waybill-table th:nth-child(4),
.waybill-table td:nth-child(4) {
  width: 40px; /* 结算 */
}

.waybill-table th:nth-child(5),
.waybill-table td:nth-child(5) {
  width: 80px; /* 原料厂家 */
}

.waybill-table th:nth-child(6),
.waybill-table td:nth-child(6) {
  width: 80px; /* 卷号 */
}

.waybill-table th:nth-child(7),
.waybill-table td:nth-child(7) {
  width: 60px; /* 规格 */
}

.waybill-table th:nth-child(8),
.waybill-table td:nth-child(8) {
  width: 40px; /* 材质 */
}

.waybill-table th:nth-child(9),
.waybill-table td:nth-child(9) {
  width: 60px; /* 数量（件） */
}

.waybill-table th:nth-child(10),
.waybill-table td:nth-child(10) {
  width: 60px; /* 重量（kg） */
}

.waybill-table th:nth-child(11),
.waybill-table td:nth-child(11) {
  width: 40px; /* 单价 */
}

.waybill-table th:nth-child(12),
.waybill-table td:nth-child(12) {
  width: 100px; /* 备注 */
}

.waybill-table th {
  background-color: #f5f7fa;
  font-weight: bold;
}

.waybill-table tr:nth-child(even) {
  background-color: #fafafa;
}

/* 表格输入框样式 */
.table-input {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  padding: 4px;
}

.table-input:focus {
  border-color: #409eff;
}

/* 无数据样式 */
.no-data {
  height: 200px;
  vertical-align: middle;
}

.no-data-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

/* 表格单元格操作区 */
.table-cell-with-action {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 备注样式 */
.waybill-remarks {
  margin-bottom: 30px;
  font-size: 12px;
  line-height: 1.5;
  text-align: justify;
}

.waybill-remarks p {
  margin: 5px 0;
}

/* 底部签名样式 */
.waybill-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  font-size: 16px;
}

.footer-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 200px;
}

.footer-item.inline {
  flex-direction: row;
  align-items: center;
  width: auto;
}

.footer-item .label {
  font-size: 14px;
  margin-right: 10px;
  width: 40px;
}

.signature-input {
  min-width: 150px;
}

/* 操作按钮样式 */
.waybill-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

/* 添加明细按钮 */
.add-detail-btn {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

/* 打印样式 */
@media print {
  .waybill-container {
    width: 100%;
    max-width: none;
    box-shadow: none;
    padding: 0;
  }
  
  .waybill-header {
    flex-wrap: nowrap;
    justify-content: space-between;
  }
  
  .waybill-footer {
    flex-wrap: nowrap;
    justify-content: space-between;
  }
  
  .label {
    width: 80px;
    text-align: right;
    white-space: nowrap;
  }
  
  .waybill-actions {
    display: none;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .waybill-header {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }
  
  .waybill-table {
    font-size: 12px;
  }
  
  .waybill-table th,
  .waybill-table td {
    padding: 2px;
  }
  
  .waybill-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  
  .footer-item.inline {
    width: 100%;
  }
  
  .label {
    width: auto;
    text-align: left;
  }
}
</style>