<?php

namespace Tests\Feature;

use App\Exports\BillExport;
use App\Models\BillModel;
use App\Models\ProductCategoryModel;
use App\Models\ProductModel;
use App\Models\PurchaseOrderModel;
use App\Models\StoreModel;
use App\Models\StoreOrderItemModel;
use Maatwebsite\Excel\Facades\Excel;

/**
 * 门店账单单独导出：账单内按商品合并明细（加权平均单价）/ 一级分类过滤 /
 * 费用行取账单自身字段 / 权限拦截 / 账单不存在 / 分类下无明细拒绝 / 小程序端本店口径
 */
class BillExportTest extends ProcurementTestCase
{
    private static int $billSeq = 0;

    /** 造一张账单（默认配送费 10、筐 2×5 + 托盘 1×20 = 附加 30、售后 0、总额 140，未支付） */
    private function makeBill(StoreModel $store, array $attributes = []): BillModel
    {
        $seq = ++self::$billSeq;

        return BillModel::create(array_merge([
            'bill_no' => 'ZD' . str_pad((string) $seq, 12, '0', STR_PAD_LEFT),
            'purchase_id' => PurchaseOrderModel::factory()->create()->id,
            'store_id' => $store->id,
            'bill_date' => '2026-08-10',
            'product_amount' => '100.00',
            'delivery_fee' => '10.00',
            'box_num' => 2,
            'tray_num' => 1,
            'box_price' => '5.00',
            'tray_price' => '20.00',
            'added_amount' => '30.00',
            'after_sale' => '0.00',
            'total_amount' => '140.00',
            'status' => BillModel::STATUS_UNPAID,
        ], $attributes));
    }

    /** 造一条账单明细（快照品名/包规/单位取自商品档案） */
    private function makeItem(BillModel $bill, ProductModel $product, int $quantity, string $price): StoreOrderItemModel
    {
        return StoreOrderItemModel::factory()->create([
            'bill_id' => $bill->id,
            'store_id' => $bill->store_id,
            'product_id' => $product->id,
            'category_id' => $product->category_id,
            'product_name' => $product->name,
            'product_spec' => $product->spec,
            'unit' => $product->unit,
            'price' => $price,
            'quantity' => $quantity,
            'weight' => $quantity * 10,
            'amount' => bcmul($price, (string) $quantity, 2),
        ]);
    }

    /** 单独导出：账单内同商品合并（数量累加、单价加权平均），费用行取账单自身字段；
     * 包规列=包规+单位合并；单价列=每件价÷包规斤数 折算零售价+单价单位（散装无法折算按原价） */
    public function test_export_merges_items_within_bill(): void
    {
        $root = ProductCategoryModel::create(['name' => '蔬菜', 'parent_id' => 0, 'sort' => 0, 'status' => 1]);
        $store = StoreModel::factory()->create();
        $productA = ProductModel::factory()->create(['category_id' => $root->id, 'spec' => '10', 'unit' => '斤/箱']);
        $productB = ProductModel::factory()->create(['category_id' => $root->id, 'spec' => '散装', 'unit' => '筐']);

        $bill = $this->makeBill($store, ['after_sale' => '-8.00']);
        // 同一商品两条明细：10×2.00 + 6×3.00 → 数量 16、金额 38.00、加权单价 2.37
        $this->makeItem($bill, $productA, 10, '2.00');
        $this->makeItem($bill, $productA, 6, '3.00');
        $this->makeItem($bill, $productB, 4, '5.00');

        $this->actingAsSysUser();
        Excel::fake();
        $this->get("/recon/bill/{$bill->id}/export")->assertOk();

        Excel::assertDownloaded(
            '门店账单_' . $bill->bill_no . '.xlsx',
            static function (BillExport $export) use ($bill, $productA, $productB): bool {
                $rows = $export->collection()->values();
                // 标题1 + 范围1 + 空行1 + 列头1 + 明细2 + 合计5 = 11 行
                if ($rows->count() !== 11) {
                    return false;
                }
                // 标题行含账单号
                if (! str_contains((string) $rows[0][0], $bill->bill_no)) {
                    return false;
                }

                $details = $rows->slice(4, 2)->values();
                $rowA = $details->firstWhere(1, $productA->name);
                $rowB = $details->firstWhere(1, $productB->name);
                if ($rowA === null || $rowB === null) {
                    return false;
                }
                // 包规列=包规+单位合并；单价列=每件价÷每件斤数+单价单位（A：2.37÷10=0.23元/斤）
                if ($rowA[2] !== '10斤/箱' || $rowA[3] !== '0.23元/斤') {
                    return false;
                }
                // 散装无法折算 → 单价按每件原价显示（B：5.00元/斤）
                if ($rowB[2] !== '散装筐' || $rowB[3] !== '5.00元/斤') {
                    return false;
                }
                // 账单内同商品合并：数量 16、金额 38.00
                if ((int) $rowA[4] !== 16 || (float) $rowA[6] !== 38.0) {
                    return false;
                }
                if ((int) $rowB[4] !== 4 || (float) $rowB[6] !== 20.0) {
                    return false;
                }

                $summary = $rows->slice(6)->values();
                // 合计：数量 20、商品金额 58.00；配送费 10.00；附加 30.00（筐 2 / 托盘 1）；售后 -8.00；总金额 90.00
                if ((int) $summary[0][4] !== 20 || (float) $summary[0][6] !== 58.0) {
                    return false;
                }
                if ($summary[1][0] !== '配送费' || (float) $summary[1][6] !== 10.0) {
                    return false;
                }
                if (! str_contains((string) $summary[2][0], '筐 2 个 / 周转托盘 1 个') || (float) $summary[2][6] !== 30.0) {
                    return false;
                }
                if (! str_contains((string) $summary[3][0], '售后金额') || (float) $summary[3][6] !== -8.0) {
                    return false;
                }

                return (float) $summary[4][6] === 90.0;
            }
        );
    }

    /** 一级分类过滤：子分类商品归入根分类，其他分类商品忽略；费用行仍全额计入 */
    public function test_export_filters_by_root_category(): void
    {
        $vegRoot = ProductCategoryModel::create(['name' => '蔬菜', 'parent_id' => 0, 'sort' => 0, 'status' => 1]);
        $vegChild = ProductCategoryModel::create(['name' => '叶菜类', 'parent_id' => $vegRoot->id, 'sort' => 0, 'status' => 1]);
        $meatRoot = ProductCategoryModel::create(['name' => '肉禽蛋', 'parent_id' => 0, 'sort' => 1, 'status' => 1]);

        $store = StoreModel::factory()->create();
        $veg = ProductModel::factory()->create(['category_id' => $vegChild->id]);
        $meat = ProductModel::factory()->create(['category_id' => $meatRoot->id]);

        $bill = $this->makeBill($store);
        $this->makeItem($bill, $veg, 10, '2.00');
        $this->makeItem($bill, $meat, 5, '20.00');

        $this->actingAsSysUser();
        Excel::fake();
        $this->get("/recon/bill/{$bill->id}/export?category_id={$vegRoot->id}")->assertOk();

        Excel::assertDownloaded(
            '门店账单_' . $bill->bill_no . '.xlsx',
            static function (BillExport $export) use ($veg): bool {
                $rows = $export->collection()->values();
                // 范围行标注所选分类
                if (! str_contains((string) $rows[1][0], '分类：蔬菜')) {
                    return false;
                }
                // 明细仅剩蔬菜（子分类归入根分类），肉禽被忽略
                $detail = $rows->slice(4, 1)->values()->first();
                if ($detail === null || $detail[1] !== $veg->name) {
                    return false;
                }

                $summary = $rows->slice(5)->values();
                // 商品金额合计 20.00（仅蔬菜）；配送费 10.00 / 附加 30.00 / 售后 0.00 全额；总金额 60.00
                if ((float) $summary[0][6] !== 20.0) {
                    return false;
                }
                if ((float) $summary[1][6] !== 10.0 || (float) $summary[2][6] !== 30.0 || (float) $summary[3][6] !== 0.0) {
                    return false;
                }

                return (float) $summary[4][6] === 60.0;
            }
        );
    }

    /** 分类过滤后无明细 → 拒绝（真实下载链路，导出类抛业务异常） */
    public function test_export_empty_category_rejected(): void
    {
        $vegRoot = ProductCategoryModel::create(['name' => '蔬菜', 'parent_id' => 0, 'sort' => 0, 'status' => 1]);
        $meatRoot = ProductCategoryModel::create(['name' => '肉禽蛋', 'parent_id' => 0, 'sort' => 1, 'status' => 1]);

        $store = StoreModel::factory()->create();
        $meat = ProductModel::factory()->create(['category_id' => $meatRoot->id]);

        $bill = $this->makeBill($store);
        $this->makeItem($bill, $meat, 5, '20.00');

        $this->actingAsSysUser();
        $this->get("/recon/bill/{$bill->id}/export?category_id={$vegRoot->id}")
            ->assertJsonPath('success', false);
    }

    /** 无 recon.bill.export 权限点 → 拦截 */
    public function test_export_requires_export_permission(): void
    {
        $store = StoreModel::factory()->create();
        $bill = $this->makeBill($store);

        // 先建一个占位用户：每个测试方法内首个系统用户自增 id=1，
        // SysAccessToken::can() 对 tokenable_id==1（超管）放行全部权限，会绕过 abilities 校验
        $this->actingAsSysUser();
        // 仅持有查询权限的用户
        $this->actingAsSysUser(['recon.bill.query']);

        $response = $this->get("/recon/bill/{$bill->id}/export");
        $this->assertFalse($response->json('success'), '缺少权限点应被拦截');
    }

    /** 账单不存在 → 拒绝 */
    public function test_export_bill_not_found_rejected(): void
    {
        $this->actingAsSysUser();

        $this->get('/recon/bill/99999/export')
            ->assertJsonPath('success', false);
    }

    /** 小程序端导出：强制本店过滤，他店账单拒绝 */
    public function test_mini_export_scoped_to_own_store(): void
    {
        $root = ProductCategoryModel::create(['name' => '蔬菜', 'parent_id' => 0, 'sort' => 0, 'status' => 1]);
        $storeA = StoreModel::factory()->create();
        $storeB = StoreModel::factory()->create();
        $product = ProductModel::factory()->create(['category_id' => $root->id]);

        $billA = $this->makeBill($storeA);
        $billB = $this->makeBill($storeB);
        $this->makeItem($billA, $product, 10, '2.00');

        $this->actingAsMiniStore($storeA);

        // 本店账单正常导出
        Excel::fake();
        $this->get("/mini/bill/{$billA->id}/export")->assertOk();
        Excel::assertDownloaded(
            '门店账单_' . $billA->bill_no . '.xlsx',
            static function (BillExport $export): bool {
                $rows = $export->collection()->values();
                // 标题1 + 范围1 + 空行1 + 列头1 + 明细1 + 合计5 = 10 行
                return $rows->count() === 10;
            }
        );

        // 他店账单 → 本店口径查无账单
        $this->get("/mini/bill/{$billB->id}/export")
            ->assertJsonPath('success', false);
    }
}