106 lines
4.1 KiB
PHP
106 lines
4.1 KiB
PHP
<?php
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namespace App\Services;
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use App\Models\BillModel;
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use App\Models\ProductModel;
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use App\Models\StoreOrderItemModel;
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use Illuminate\Support\Collection;
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/**
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* 账单详情数据组装（后台门店账单页与小程序账单详情共用）
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*/
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class BillDetailService
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{
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/**
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* 合并后的商品明细：按商品聚合账单关联的全部订单明细
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* 单价为加权平均口径（Σ金额÷Σ数量），保证 单价×数量=金额；附商品首图
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*
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* @return array<int, array{product_id: int, product_name: string, product_spec: string, unit: string, price: string, quantity: int, weight: string, amount: string, image: string}>
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*/
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public function mergedItems(BillModel $bill): array
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{
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$items = StoreOrderItemModel::query()
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->where('bill_id', $bill->id)
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->orderBy('id')
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->get();
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return $this->aggregateItems($items);
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}
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/**
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* 合并后的商品明细（跨账单口径）：按商品聚合多张账单的全部订单明细
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* 用于账单合并导出，单价同为加权平均口径
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*
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* @param array<int, int> $billIds 账单ID列表
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* @return array<int, array{product_id: int, product_name: string, product_spec: string, unit: string, price: string, quantity: int, weight: string, amount: string, image: string}>
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*/
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public function mergedItemsOfBills(array $billIds): array
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{
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$items = StoreOrderItemModel::query()
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->whereIn('bill_id', $billIds)
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->orderBy('id')
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->get();
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return $this->aggregateItems($items);
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}
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/**
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* 按商品聚合订单明细：数量累加、重量/金额 bc 累加、单价加权平均，
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* 首图取明细快照 image_ids 批量解析，按「分类sort → 商品sort」排序
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*
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* @param Collection<int, StoreOrderItemModel> $items
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* @return array<int, array{product_id: int, product_name: string, product_spec: string, unit: string, price: string, quantity: int, weight: string, amount: string, image: string}>
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*/
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private function aggregateItems(Collection $items): array
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{
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// 排序键：分类 sort → 商品 sort（与采购单明细矩阵同序）
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$products = ProductModel::withTrashed()
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->with('category:id,sort')
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->whereIn('id', $items->pluck('product_id')->unique())
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->get()
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->keyBy('id');
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$rows = [];
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foreach ($items->groupBy('product_id') as $productId => $group) {
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$product = $products->get((int) $productId);
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$first = $group->first();
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$quantity = 0;
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$weight = '0';
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$amount = '0';
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foreach ($group as $item) {
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$quantity += (int) $item->quantity;
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$weight = bcadd($weight, (string) $item->weight, 3);
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$amount = bcadd($amount, (string) $item->amount, 2);
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}
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$rows[] = [
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'product_id' => (int) $productId,
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'product_name' => $first->product_name,
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'product_spec' => $first->product_spec,
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'unit' => $first->unit,
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'price' => $quantity > 0
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? bcdiv($amount, (string) $quantity, 2)
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: (string) $first->price,
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'quantity' => $quantity,
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'weight' => $weight,
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'amount' => $amount,
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'image_ids' => (array) $first->image_ids,
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'category_sort' => (int) ($product->category->sort ?? 9999),
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'product_sort' => (int) ($product->sort ?? 9999),
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];
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}
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usort($rows, static fn (array $a, array $b): int =>
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[$a['category_sort'], $a['product_sort'], $a['product_id']]
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<=> [$b['category_sort'], $b['product_sort'], $b['product_id']]);
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// 首图批量解析（写入 image、移除 image_ids）
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app(ItemImageResolver::class)->resolve($rows);
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return array_map(static function (array $row): array {
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unset($row['category_sort'], $row['product_sort']);
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return $row;
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}, $rows);
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}
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}
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