<template>
  <el-card class="table-card">
    <template #header>
      <div class="card-header">
        <span class="title">差旅费预算明细表</span>
        <div class="flex items-center gap-2">
          <span style="white-space: nowrap">行数:</span>
          <el-input-number v-model="addRowCount" :min="1" :max="10" size="small" style="width: 80px" />
          <el-button type="primary" size="small" @click="handleAddRows">
            <el-icon>
              <Plus />
            </el-icon>
            添加</el-button>
          <el-button type="danger" size="small" @click="handleBatchDelete" :disabled="selectedRows.length === 0">
            <el-icon>
              <Delete />
            </el-icon>
            删除 </el-button>
        </div>
      </div>
    </template>

    <!-- 表格 -->
    <el-table :data="travelCostList" border style="width: 100%" :summary-method="getSummaries" show-summary @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />

      <!-- 预算成本 -->
      <el-table-column label="预算成本" align="center">
        <el-table-column prop="sortOrder" label="序号" width="80" align="center" />
        <el-table-column prop="tripLocation" label="出差地点" width="120">
          <template #default="scope">
            <el-input v-model="scope.row.tripLocation" />
          </template>
        </el-table-column>
        <el-table-column prop="reason" label="事由" width="150">
          <template #default="scope">
            <el-input v-model="scope.row.reason" type="textarea" :rows="2" />
          </template>
        </el-table-column>
        <el-table-column prop="frequency" label="次数" width="120">
          <template #default="scope">
            <el-input-number v-model="scope.row.frequency" :min="0" :precision="0" size="small" @change="calculateBudgetSubtotal(scope.row)" style="width: 106px" />
          </template>
        </el-table-column>
        <el-table-column prop="peopleNumber" label="人数" width="120">
          <template #default="scope">
            <el-input-number v-model="scope.row.peopleNumber" :min="0" :precision="0" size="small" @change="calculateBudgetSubtotal(scope.row)" style="width: 106px" />
          </template>
        </el-table-column>
        <el-table-column prop="days" label="天数" width="130">
          <template #default="scope">
            <el-input-number v-model="scope.row.days" :min="0" :precision="0" size="small" @change="calculateBudgetSubtotal(scope.row)" style="width: 116px" />
          </template>
        </el-table-column>
        <el-table-column prop="stayStandard" label="住宿标准(元)" width="140">
          <template #default="scope">
            <el-input-number v-model="scope.row.stayStandard" :min="0" :precision="2" size="small" :step="10" @change="calculateBudgetSubtotal(scope.row)" style="width: 126px" />
          </template>
        </el-table-column>
        <el-table-column prop="travelExpenses" label="往返路费(元)" width="140">
          <template #default="scope">
            <el-input-number v-model="scope.row.travelExpenses" :min="0" :precision="2" size="small" :step="10" @change="calculateBudgetSubtotal(scope.row)" style="width: 126px" />
          </template>
        </el-table-column>
        <el-table-column prop="stayCosts" label="住宿费(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.stayCosts) }}
          </template>
        </el-table-column>
        <el-table-column prop="subsidyCosts" label="补贴(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.subsidyCosts) }}
          </template>
        </el-table-column>
        <el-table-column prop="subtotalCosts" label="小计(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.subtotalCosts) }}
          </template>
        </el-table-column>
      </el-table-column>

      <!-- 降成本后预算成本 -->
      <el-table-column label="降成本后预算成本" align="center">
        <el-table-column prop="reduceSortOrder" label="序号" width="80" align="center" />
        <el-table-column prop="reduceTripLocation" label="出差地点" width="120">
          <template #default="scope">
            <el-input v-model="scope.row.reduceTripLocation" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceReason" label="事由" width="150">
          <template #default="scope">
            <el-input v-model="scope.row.reduceReason" type="textarea" :rows="2" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceFrequency" label="次数" width="120">
          <template #default="scope">
            <el-input-number v-model="scope.row.reduceFrequency" :min="0" :precision="0" size="small" @change="calculateReducedSubtotal(scope.row)" style="width: 106px" />
          </template>
        </el-table-column>
        <el-table-column prop="reducePeopleNumber" label="人数" width="120">
          <template #default="scope">
            <el-input-number v-model="scope.row.reducePeopleNumber" :min="0" :precision="0" size="small" @input="calculateReducedSubtotal(scope.row)" style="width: 106px" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceDayNumber" label="天数" width="120">
          <template #default="scope">
            <el-input-number v-model="scope.row.reduceDayNumber" :min="0" :precision="0" size="small" @change="calculateReducedSubtotal(scope.row)" style="width: 106px" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceStayStandard" label="住宿标准(元)" width="140">
          <template #default="scope">
            <el-input-number v-model="scope.row.reduceStayStandard" :min="0" :precision="2" size="small" :step="10" @input="calculateReducedSubtotal(scope.row)" style="width: 126px" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceTravelExpenses" label="往返路费(元)" width="140">
          <template #default="scope">
            <el-input-number v-model="scope.row.reduceTravelExpenses" :min="0" :precision="2" size="small" :step="10" @change="calculateReducedSubtotal(scope.row)" style="width: 126px" />
          </template>
        </el-table-column>
        <el-table-column prop="reduceStayCosts" label="住宿费(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.reduceStayCosts) }}
          </template>
        </el-table-column>
        <el-table-column prop="reduceSubsidyCosts" label="补贴(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.reduceSubsidyCosts) }}
          </template>
        </el-table-column>
        <el-table-column prop="reduceSubtotalCosts" label="小计(元)" width="100">
          <template #default="scope">
            {{ formatNumber(scope.row.reduceSubtotalCosts) }}
          </template>
        </el-table-column>
      </el-table-column>

      <el-table-column prop="reduceProposal" label="降成本方案" width="200">
        <template #default="scope">
          <el-input v-model="scope.row.reduceProposal" type="textarea" :rows="2" />
        </template>
      </el-table-column>

      <el-table-column label="操作" width="80" align="center">
        <template #default="scope">
          <el-button type="danger" size="small" @click="handleDelete(scope.$index, scope.row)" icon="Delete">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加行数弹窗 -->
    <el-dialog v-model="showAddDialog" title="添加行数" width="400px">
      <el-form>
        <el-form-item label="添加行数">
          <el-input-number v-model="addRowCount" :min="1" :max="10" />
        </el-form-item>
      </el-form>
      <template #footer>
        <el-button @click="showAddDialog = false">取消</el-button>
        <el-button type="primary" @click="handleAddRows">确定</el-button>
      </template>
    </el-dialog>
  </el-card>
</template>

<script setup lang="ts">
import { ref } from 'vue';
import { budgetTravelCostVO } from '@/api/oa/erp/budgetInfo/market/budgetTravelCost/types';

// 差旅费数据
const travelCostList = ref<budgetTravelCostVO[]>([]);

const toDeletedTravelCostIdList = ref([]);

// 选中的行
const selectedRows = ref([]);

// 添加行弹窗
const showAddDialog = ref(false);
const addRowCount = ref(1);

// 格式化数字,元转换为万元
const formatNumber = (value: number) => {
  if (!value) return '0.00';
  return parseFloat(value).toFixed(2);
};

// 格式化数字,元转换为万元
const format2TenThousandNumber = (value: number) => {
  if (!value) return '0.00';
  return (parseFloat(value) / 10000).toFixed(2);
};

// 计算预算小计
const calculateBudgetSubtotal = (row: any) => {
  const frequency = parseFloat(row.frequency) || 0;
  const peopleNumber = parseFloat(row.peopleNumber) || 0;
  const days = parseFloat(row.days) || 0;
  const stayStandard = parseFloat(row.stayStandard) || 0;
  const travelExpenses = parseFloat(row.travelExpenses) || 0;

  // 住宿费 = 人数 × 天数 × 住宿标准
  row.stayCosts = peopleNumber * days * stayStandard;

  // 补贴 = 50 × 人数 × 天数
  row.subsidyCosts = 50 * peopleNumber * days;

  // 小计 = (往返路费 + 住宿费 + 补贴)
  row.subtotalCosts = travelExpenses + row.stayCosts + row.subsidyCosts;
};

// 计算降成本后小计
const calculateReducedSubtotal = (row: any) => {
  const frequency = parseFloat(row.reduceFrequency) || 0;
  const peopleNumber = parseFloat(row.reducePeopleNumber) || 0;
  const days = parseFloat(row.reduceDayNumber) || 0;
  const stayStandard = parseFloat(row.reduceStayStandard) || 0;
  const travelExpenses = parseFloat(row.reduceTravelExpenses) || 0;

  // 住宿费 = 人数 × 天数 × 住宿标准
  row.reduceStayCosts = peopleNumber * days * stayStandard;

  // 补贴 = 50 × 人数 × 天数
  row.reduceSubsidyCosts = 50 * peopleNumber * days;

  // 小计 = (往返路费 + 住宿费 + 补贴)
  row.reduceSubtotalCosts = travelExpenses + row.reduceStayCosts + row.reduceSubsidyCosts;
};

// 选择变化
const handleSelectionChange = (selection: any[]) => {
  selectedRows.value = selection;
};

// 添加行
const handleAddRows = () => {
  const currentSortOrder =
    travelCostList.value && travelCostList.value.length > 0
      ? Math.max(...travelCostList.value.map((item) => item.sortOrder))
      : 0;

  for (let i = 0; i < addRowCount.value; i++) {
    travelCostList.value.push({
      sortOrder: currentSortOrder + i + 1,
      tripLocation: '',
      reason: '',
      frequency: 0,
      peopleNumber: 0,
      days: 0,
      stayStandard: 0,
      travelExpenses: 0,
      stayCosts: 0,
      subsidyCosts: 0,
      subtotalCosts: 0,
      reduceSortOrder: currentSortOrder + i + 1,
      reduceTripLocation: '',
      reduceReason: '',
      reduceFrequency: 0,
      reducePeopleNumber: 0,
      reduceDayNumber: 0,
      reduceStayStandard: 0,
      reduceTravelExpenses: 0,
      reduceStayCosts: 0,
      reduceSubsidyCosts: 0,
      reduceSubtotalCosts: 0,
      reduceProposal: ''
    });
  }
};

// 删除单行
const handleDelete = (index: number, row: budgetTravelCostVO) => {
  travelCostList.value.splice(index, 1);
  // 重新编号
  travelCostList.value.forEach((item, index) => {
    item.sortOrder = index + 1;
    item.reduceSortOrder = index + 1;
  });

  if (row.travelCostId) {
    toDeletedTravelCostIdList.value.push(row.travelCostId);
  }
};

// 批量删除
const handleBatchDelete = () => {
  if (selectedRows.value.length === 0) {
    ElMessage.warning('请选择要删除的行');
    return;
  }

  selectedRows.value.forEach((row) => {
    if (row.travelCostId) {
      toDeletedTravelCostIdList.value.push(row.travelCostId);
    }
  });

  travelCostList.value = travelCostList.value.filter((item) => !selectedRows.value.includes(item));
  // 重新编号
  travelCostList.value.forEach((item, index) => {
    item.sortOrder = index + 1;
    item.reduceSortOrder = index + 1;
  });
  selectedRows.value = [];
};

// 合计方法
const getSummaries = (param: any) => {
  const { columns, data } = param;
  const sums: any[] = [];
  columns.forEach((column: any, index: number) => {
    if (index === 7) {
      sums[index] = '合计';
      return;
    }
    if (
      column.property === 'travelExpenses' ||
      column.property === 'stayCosts' ||
      column.property === 'subsidyCosts' ||
      column.property === 'subtotalCosts' ||
      column.property === 'reduceTravelExpenses' ||
      column.property === 'reduceStayCosts' ||
      column.property === 'reduceSubsidyCosts' ||
      column.property === 'reduceSubtotalCosts'
    ) {
      const values = data.map((item: any) => Number(item[column.property]));
      if (!values.every((value: number) => Number.isNaN(value))) {
        sums[index] = values.reduce((prev: number, curr: number) => {
          const value = Number(curr);
          if (!Number.isNaN(value)) {
            return prev + curr;
          } else {
            return prev;
          }
        }, 0);

        if (column.property === 'subtotalCosts' || column.property === 'reduceSubtotalCosts') {
          sums[index] = formatNumber(sums[index]);
        } else {
          sums[index] = formatNumber(sums[index]);
        }
      } else {
        sums[index] = '';
      }
    } else {
      sums[index] = '';
    }
  });
  return sums;
};

// 获取总金额（供父组件调用）
const getTotalAmount = () => {
  const totalBudgetAmount = travelCostList.value.reduce((sum, item) => sum + Number(item.subtotalCosts), 0);
  const totalReducedAmount = travelCostList.value.reduce((sum, item) => sum + Number(item.reduceSubtotalCosts), 0);
  return {
    budgetAmount: totalBudgetAmount,
    reducedAmount: totalReducedAmount
  };
};

// 暴露方法给父组件
defineExpose({
  getTotalAmount,
  travelCostList,
  toDeletedTravelCostIdList
});
</script>

<style scoped>
.travel-cost {
  padding: 20px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.title {
  text-align: center;
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 20px;
}

.actions {
  margin-bottom: 20px;
}

.actions .el-button {
  margin-right: 10px;
}
</style>
