<?php

namespace App\Exports;

use App\Exceptions\RepositoryException;
use App\Models\PurchaseOrderModel;
use App\Models\StoreModel;
use App\Models\StoreOrderItemModel;
use Maatwebsite\Excel\Concerns\WithMultipleSheets;

/**
 * 门店购买详情导出：多门店合并为一个 XLSX（每门店一个工作表，工作表名=门店名称）；
 * 构造传入 storeId 时仅导出该门店（单工作表）
 */
class PurchaseStoreExport implements WithMultipleSheets
{
    /**
     * @param PurchaseOrderModel $purchase 采购单
     * @param int $storeId 单门店导出（0=全部门店）
     */
    public function __construct(
        private readonly PurchaseOrderModel $purchase,
        private readonly int $storeId = 0,
    ) {
    }

    /**
     * @return array<int, PurchaseStoreSheet>
     */
    public function sheets(): array
    {
        // 本采购单内有明细的门店（含软删除，保证历史单据可导出）
        $query = StoreOrderItemModel::query()
            ->join('store_order', 'store_order.id', '=', 'store_order_item.order_id')
            ->where('store_order_item.purchase_id', $this->purchase->id)
            ->whereNull('store_order.deleted_at');
        if ($this->storeId > 0) {
            $query->where('store_order_item.store_id', $this->storeId);
        }
        $storeIds = $query->distinct()->pluck('store_order_item.store_id');

        if ($storeIds->isEmpty()) {
            throw new RepositoryException(
                $this->storeId > 0 ? '该门店在此采购单中无采购商品' : '该采购单无门店采购明细，无法导出'
            );
        }

        $stores = StoreModel::withTrashed()
            ->whereIn('id', $storeIds)
            ->orderBy('id')
            ->get(['id', 'name']);

        $usedNames = [];
        $sheets = [];
        foreach ($stores as $store) {
            $sheets[] = new PurchaseStoreSheet(
                $this->purchase,
                $store,
                SheetName::make((string) $store->name, (int) $store->id, $usedNames),
            );
        }

        return $sheets;
    }
}