<script lang="ts" setup>
import type { Ref } from 'vue';

import type { PropertyAndValues, RuleConfig } from '../index';

import type { MallSpuApi } from '#/api/mall/product/spu';

import { ref, watch } from 'vue';

import {
  copyValueToTarget,
  formatToFraction,
  getNestedValue,
  isEmpty,
} from '@vben/utils';

import { Button, Image, Input, InputNumber, message } from 'ant-design-vue';

import { VxeColumn, VxeTable } from '#/adapter/vxe-table';
import { ImageUpload } from '#/components/upload';

defineOptions({ name: 'SkuList' });

const props = withDefaults(
  defineProps<{
    isActivityComponent?: boolean; // 是否作为 sku 活动配置组件
    isBatch?: boolean; // 是否作为批量操作组件
    isComponent?: boolean; // 是否作为 sku 选择组件
    isDetail?: boolean; // 是否作为 sku 详情组件
    propertyList?: PropertyAndValues[];
    propFormData?: MallSpuApi.Spu;
    ruleConfig?: RuleConfig[];
  }>(),
  {
    propFormData: () => ({}) as MallSpuApi.Spu,
    propertyList: () => [],
    ruleConfig: () => [],
    isBatch: false,
    isDetail: false,
    isComponent: false,
    isActivityComponent: false,
  },
);

const emit = defineEmits<{
  (e: 'selectionChange', value: MallSpuApi.Sku[]): void;
}>();

const { isBatch, isDetail, isComponent, isActivityComponent } = props;

const formData: Ref<MallSpuApi.Spu | undefined> = ref<MallSpuApi.Spu>();
const tableHeaders = ref<{ label: string; prop: string }[]>([]);

/** 创建空 SKU 数据 */
function createEmptySku(): MallSpuApi.Sku {
  return {
    price: 0,
    marketPrice: 0,
    costPrice: 0,
    barCode: '',
    picUrl: '',
    stock: 0,
    weight: 0,
    volume: 0,
    firstBrokeragePrice: 0,
    secondBrokeragePrice: 0,
  };
}

const skuList = ref<MallSpuApi.Sku[]>([createEmptySku()]);

/** 批量添加 */
function batchAdd() {
  validateProperty();
  formData.value!.skus!.forEach((item: MallSpuApi.Sku) => {
    copyValueToTarget(item, skuList.value[0]);
  });
}

/** 校验商品属性属性值 */
function validateProperty() {
  // 校验商品属性属性值是否为空，有一个为空都不给过
  const warningInfo = '存在属性属性值为空，请先检查完善属性值后重试！！！';
  for (const item of props.propertyList as PropertyAndValues[]) {
    if (!item.values || isEmpty(item.values)) {
      message.warning(warningInfo);
      throw new Error(warningInfo);
    }
  }
}

/** 删除 SKU */
function deleteSku(row: MallSpuApi.Sku) {
  const index = formData.value!.skus!.findIndex(
    (sku: MallSpuApi.Sku) =>
      JSON.stringify(sku.properties) === JSON.stringify(row.properties),
  );
  if (index !== -1) {
    formData.value!.skus!.splice(index, 1);
  }
}

/** 校验 SKU 数据：保存时，每个商品规格的表单要校验。例如：销售金额最低是 0.01 */
function validateSku() {
  validateProperty();
  let warningInfo = '请检查商品各行相关属性配置，';
  let validate = true;

  for (const sku of formData.value!.skus!) {
    for (const rule of props?.ruleConfig as RuleConfig[]) {
      const value = getNestedValue(sku, rule.name);
      if (!rule.rule(value)) {
        validate = false;
        warningInfo += rule.message;
        break;
      }
    }

    if (!validate) {
      message.warning(warningInfo);
      throw new Error(warningInfo);
    }
  }
}

/**
 * 选择时触发
 *
 * @param records 传递过来的选中的 sku 是一个数组
 */
function handleSelectionChange({ records }: { records: MallSpuApi.Sku[] }) {
  emit('selectionChange', records);
}

/** 将传进来的值赋值给 skuList */
watch(
  () => props.propFormData,
  (data) => {
    if (!data) {
      return;
    }
    formData.value = data;
  },
  {
    deep: true,
    immediate: true,
  },
);

/** 生成表数据 */
function generateTableData(propertyList: PropertyAndValues[]) {
  const propertyValues = propertyList.map((item: PropertyAndValues) =>
    (item.values || []).map((v: { id: number; name: string }) => ({
      propertyId: item.id,
      propertyName: item.name,
      valueId: v.id,
      valueName: v.name,
    })),
  );

  const buildSkuList = build(propertyValues);

  // 如果回显的 sku 属性和添加的属性不一致则重置 skus 列表
  if (!validateData(propertyList)) {
    formData.value!.skus = [];
  }

  for (const item of buildSkuList) {
    const properties = Array.isArray(item) ? item : [item];
    const row = {
      ...createEmptySku(),
      properties,
    };

    // 如果存在属性相同的 sku 则不做处理
    const exists = formData.value!.skus!.some(
      (sku: MallSpuApi.Sku) =>
        JSON.stringify(sku.properties) === JSON.stringify(row.properties),
    );

    if (!exists) {
      formData.value!.skus!.push(row);
    }
  }
}

/** 生成 skus 前置校验 */
function validateData(propertyList: PropertyAndValues[]): boolean {
  const skuPropertyIds: number[] = [];
  formData.value!.skus!.forEach((sku: MallSpuApi.Sku) =>
    sku.properties
      ?.map((property: MallSpuApi.Property) => property.propertyId)
      ?.forEach((propertyId?: number) => {
        if (!skuPropertyIds.includes(propertyId!)) {
          skuPropertyIds.push(propertyId!);
        }
      }),
  );
  const propertyIds = propertyList.map((item: PropertyAndValues) => item.id);
  return skuPropertyIds.length === propertyIds.length;
}

/** 构建所有排列组合 */
function build(
  propertyValuesList: MallSpuApi.Property[][],
): (MallSpuApi.Property | MallSpuApi.Property[])[] {
  if (propertyValuesList.length === 0) {
    return [];
  } else if (propertyValuesList.length === 1) {
    return propertyValuesList[0] || [];
  } else {
    const result: MallSpuApi.Property[][] = [];
    const rest = build(propertyValuesList.slice(1));
    const firstList = propertyValuesList[0];
    if (!firstList) {
      return [];
    }

    for (const element of firstList) {
      for (const element_ of rest) {
        // 第一次不是数组结构，后面的都是数组结构
        if (Array.isArray(element_)) {
          result.push([element!, ...(element_ as MallSpuApi.Property[])]);
        } else {
          result.push([element!, element_ as MallSpuApi.Property]);
        }
      }
    }
    return result;
  }
}

/** 监听属性列表，生成相关参数和表头 */
watch(
  () => props.propertyList as PropertyAndValues[],
  (propertyList: PropertyAndValues[]) => {
    // 如果不是多规格则结束
    if (!formData.value!.specType) {
      return;
    }

    // 如果当前组件作为批量添加数据使用，则重置表数据
    if (props.isBatch) {
      skuList.value = [createEmptySku()];
    }

    // 判断代理对象是否为空
    if (JSON.stringify(propertyList) === '[]') {
      return;
    }

    // 重置并生成表头
    tableHeaders.value = propertyList.map((item, index) => ({
      prop: `name${index}`,
      label: item.name,
    }));

    // 如果回显的 sku 属性和添加的属性一致则不处理
    if (validateData(propertyList)) {
      return;
    }

    // 添加新属性没有属性值也不做处理
    if (propertyList.some((item) => !item.values || isEmpty(item.values))) {
      return;
    }

    // 生成 table 数据，即 sku 列表
    generateTableData(propertyList);
  },
  {
    deep: true,
    immediate: true,
  },
);

const activitySkuListRef = ref();

/** 获取 SKU 表格引用 */
function getSkuTableRef() {
  return activitySkuListRef.value;
}

defineExpose({
  generateTableData,
  validateSku,
  getSkuTableRef,
});
</script>

<template>
  <div class="w-full">
    <!-- 情况一：添加/修改 -->
    <VxeTable
      v-if="!isDetail && !isActivityComponent"
      :data="isBatch ? skuList : formData?.skus || []"
      border
      max-height="500"
      :column-config="{
        resizable: true,
      }"
      :resizable-config="{
        dragMode: 'fixed',
      }"
      size="small"
    >
      <VxeColumn align="center" title="图片" width="120" fixed="left">
        <template #default="{ row }">
          <ImageUpload
            v-model:value="row.picUrl"
            :max-number="1"
            :max-size="2"
            :show-description="false"
          />
        </template>
      </VxeColumn>
      <template v-if="formData?.specType && !isBatch">
        <!-- 根据商品属性动态添加 -->
        <VxeColumn
          v-for="(item, index) in tableHeaders"
          :key="index"
          :title="item.label"
          align="center"
          fixed="left"
          min-width="80"
        >
          <template #default="{ row }">
            <span class="font-bold text-[#40aaff]">
              {{ row.properties?.[index]?.valueName }}
            </span>
          </template>
        </VxeColumn>
      </template>
      <VxeColumn align="center" title="商品条码" width="168">
        <template #default="{ row }">
          <Input v-model:value="row.barCode" class="w-full" />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="销售价" width="168">
        <template #default="{ row }">
          <InputNumber
            v-model:value="row.price"
            :min="0"
            :precision="2"
            :step="0.1"
            class="w-full"
          />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="市场价" width="168">
        <template #default="{ row }">
          <InputNumber
            v-model:value="row.marketPrice"
            :min="0"
            :precision="2"
            :step="0.1"
            class="w-full"
          />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="成本价" width="168">
        <template #default="{ row }">
          <InputNumber
            v-model:value="row.costPrice"
            :min="0"
            :precision="2"
            :step="0.1"
            class="w-full"
          />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="库存" width="168">
        <template #default="{ row }">
          <InputNumber v-model:value="row.stock" :min="0" class="w-full" />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="重量(kg)" width="168">
        <template #default="{ row }">
          <InputNumber
            v-model:value="row.weight"
            :min="0"
            :precision="2"
            :step="0.1"
            class="w-full"
          />
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="体积(m^3)" width="168">
        <template #default="{ row }">
          <InputNumber
            v-model:value="row.volume"
            :min="0"
            :precision="2"
            :step="0.1"
            class="w-full"
          />
        </template>
      </VxeColumn>
      <template v-if="formData?.subCommissionType">
        <VxeColumn align="center" title="一级返佣(元)" width="168">
          <template #default="{ row }">
            <InputNumber
              v-model:value="row.firstBrokeragePrice"
              :min="0"
              :precision="2"
              :step="0.1"
              class="w-full"
            />
          </template>
        </VxeColumn>
        <VxeColumn align="center" title="二级返佣(元)" width="168">
          <template #default="{ row }">
            <InputNumber
              v-model:value="row.secondBrokeragePrice"
              :min="0"
              :precision="2"
              :step="0.1"
              class="w-full"
            />
          </template>
        </VxeColumn>
      </template>
      <VxeColumn
        v-if="formData?.specType"
        align="center"
        fixed="right"
        title="操作"
        width="100"
      >
        <template #default="{ row }">
          <Button v-if="isBatch" type="link" size="small" @click="batchAdd">
            批量添加
          </Button>
          <Button
            v-else
            type="link"
            size="small"
            danger
            @click="deleteSku(row)"
          >
            删除
          </Button>
        </template>
      </VxeColumn>
    </VxeTable>

    <!-- 情况二：详情 -->
    <VxeTable
      v-if="isDetail"
      ref="activitySkuListRef"
      :data="formData?.skus || []"
      border
      max-height="500"
      size="small"
      :column-config="{
        resizable: true,
      }"
      :resizable-config="{
        dragMode: 'fixed',
      }"
      :checkbox-config="isComponent ? { reserve: true } : undefined"
      @checkbox-change="handleSelectionChange"
      @checkbox-all="handleSelectionChange"
    >
      <VxeColumn v-if="isComponent" type="checkbox" width="45" />
      <VxeColumn align="center" title="图片" max-width="140" fixed="left">
        <template #default="{ row }">
          <Image
            v-if="row.picUrl"
            :src="row.picUrl"
            class="h-[50px] w-[50px] cursor-pointer"
            :preview="true"
          />
        </template>
      </VxeColumn>
      <template v-if="formData?.specType && !isBatch">
        <!-- 根据商品属性动态添加 -->
        <VxeColumn
          v-for="(item, index) in tableHeaders"
          :key="index"
          :title="item.label"
          align="center"
          max-width="80"
          fixed="left"
        >
          <template #default="{ row }">
            <span class="font-bold text-[#40aaff]">
              {{ row.properties?.[index]?.valueName }}
            </span>
          </template>
        </VxeColumn>
      </template>
      <VxeColumn align="center" title="商品条码" width="100">
        <template #default="{ row }">
          {{ row.barCode }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="销售价(元)" width="80">
        <template #default="{ row }">
          {{ row.price }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="市场价(元)" width="80">
        <template #default="{ row }">
          {{ row.marketPrice }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="成本价(元)" width="80">
        <template #default="{ row }">
          {{ row.costPrice }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="库存" width="80">
        <template #default="{ row }">
          {{ row.stock }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="重量(kg)" width="80">
        <template #default="{ row }">
          {{ row.weight }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="体积(m^3)" width="80">
        <template #default="{ row }">
          {{ row.volume }}
        </template>
      </VxeColumn>
      <template v-if="formData?.subCommissionType">
        <VxeColumn align="center" title="一级返佣(元)" width="80">
          <template #default="{ row }">
            {{ row.firstBrokeragePrice }}
          </template>
        </VxeColumn>
        <VxeColumn align="center" title="二级返佣(元)" width="80">
          <template #default="{ row }">
            {{ row.secondBrokeragePrice }}
          </template>
        </VxeColumn>
      </template>
    </VxeTable>

    <!-- 情况三：作为活动组件 -->
    <VxeTable
      v-if="isActivityComponent"
      :data="formData?.skus || []"
      border
      max-height="500"
      size="small"
      :column-config="{
        resizable: true,
      }"
      :resizable-config="{
        dragMode: 'fixed',
      }"
    >
      <VxeColumn v-if="isComponent" type="checkbox" width="45" fixed="left" />
      <VxeColumn align="center" title="图片" max-width="140" fixed="left">
        <template #default="{ row }">
          <Image
            :src="row.picUrl"
            class="h-[60px] w-[60px] cursor-pointer"
            :preview="true"
          />
        </template>
      </VxeColumn>
      <template v-if="formData?.specType">
        <!-- 根据商品属性动态添加 -->
        <VxeColumn
          v-for="(item, index) in tableHeaders"
          :key="index"
          :title="item.label"
          align="center"
          width="80"
          fixed="left"
        >
          <template #default="{ row }">
            <span class="font-bold text-[#40aaff]">
              {{ row.properties?.[index]?.valueName }}
            </span>
          </template>
        </VxeColumn>
      </template>
      <VxeColumn align="center" title="商品条码" width="100">
        <template #default="{ row }">
          {{ row.barCode }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="销售价(元)" width="80">
        <template #default="{ row }">
          {{ formatToFraction(row.price) }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="市场价(元)" width="80">
        <template #default="{ row }">
          {{ formatToFraction(row.marketPrice) }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="成本价(元)" width="80">
        <template #default="{ row }">
          {{ formatToFraction(row.costPrice) }}
        </template>
      </VxeColumn>
      <VxeColumn align="center" title="库存" width="80">
        <template #default="{ row }">
          {{ row.stock }}
        </template>
      </VxeColumn>
      <!-- 方便扩展每个活动配置的属性不一样  -->
      <slot name="extension"></slot>
    </VxeTable>
  </div>
</template>
