<?php

namespace Tests\Feature;

use App\Models\CustomerLevelModel;
use App\Models\ProductModel;
use App\Models\ProductPriceModel;
use App\Models\PurchaseOrderModel;
use App\Models\StoreModel;
use App\Models\StoreOrderModel;
use App\Models\UserModel;

/**
 * C1 订单汇总生成采购单：多门店聚合、订单状态回写、无订单/重复生成防护
 */
class PurchaseGenerateTest extends ProcurementTestCase
{
    /**
     * 造当日待汇总订单：门店A 两单各 3 件 + 门店B 一单 4 件（同一商品）
     * 商品设两个等级价 5.00 / 4.00，估算单价应取最低 4.00
     */
    private function seedPendingOrders(): ProductModel
    {
        $level = CustomerLevelModel::factory()->create();
        $levelLow = CustomerLevelModel::factory()->create();
        $storeA = StoreModel::factory()->create(['level_id' => $level->id]);
        $storeB = StoreModel::factory()->create(['level_id' => $level->id]);
        $product = ProductModel::factory()->create(['status' => ProductModel::STATUS_ON]);
        ProductPriceModel::factory()->create(['product_id' => $product->id, 'level_id' => $level->id, 'price' => 5.00]);
        ProductPriceModel::factory()->create(['product_id' => $product->id, 'level_id' => $levelLow->id, 'price' => 4.00]);

        foreach ([[$storeA, 3], [$storeA, 3], [$storeB, 4]] as [$store, $qty]) {
            $this->actingAsMiniUser(UserModel::factory()->forStore($store->id)->create());
            $this->postJson('/mini/order', ['items' => [['product_id' => $product->id, 'quantity' => $qty]]])
                ->assertJsonPath('success', true);
        }

        return $product;
    }

    /** 多门店多订单按商品聚合，估算单价取最低等级价 */
    public function test_generate_aggregates_orders_by_product(): void
    {
        $this->seedPendingOrders();
        $admin = $this->actingAsSysUser();

        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
            ->assertOk()
            ->assertJsonPath('success', true);

        $purchase = PurchaseOrderModel::first();
        $this->assertNotNull($purchase);
        $this->assertStringStartsWith('PO', $purchase->purchase_no);
        $this->assertSame(now()->toDateString(), $purchase->purchase_date->toDateString());
        $this->assertSame($admin->id, $purchase->operator_id);
        $this->assertSame(PurchaseOrderModel::STATUS_PENDING, $purchase->status);

        $this->assertCount(1, $purchase->items, '单一商品应聚合为一行');
        $item = $purchase->items->first();
        $this->assertSame('10.00', (string) $item->quantity, '3+3+4');
        $this->assertSame('4.00', (string) $item->price, '估算单价取最低等级价');
        $this->assertSame('40.00', (string) $item->amount, '10 × 4.00');
        $this->assertSame('40.00', (string) $purchase->estimate_amount);
    }

    /** 源订单状态回写为已汇总 */
    public function test_generate_writes_back_order_status(): void
    {
        $this->seedPendingOrders();
        $this->actingAsSysUser();

        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
            ->assertJsonPath('success', true);

        $this->assertSame(0, StoreOrderModel::where('status', StoreOrderModel::STATUS_PENDING)->count());
        $this->assertSame(3, StoreOrderModel::where('status', StoreOrderModel::STATUS_SUMMARIZED)->count());
    }

    /** 当日无待汇总订单 → 报错 */
    public function test_generate_without_pending_orders_fails(): void
    {
        $this->actingAsSysUser();

        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
            ->assertJsonPath('success', false);
        $this->assertSame(0, PurchaseOrderModel::count());
    }

    /** 幂等：已汇总订单不会被重复归集 */
    public function test_generate_is_idempotent(): void
    {
        $this->seedPendingOrders();
        $this->actingAsSysUser();

        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
            ->assertJsonPath('success', true);
        $this->postJson('/purchase/order/generate', ['purchase_date' => now()->toDateString()])
            ->assertJsonPath('success', false);

        $this->assertSame(1, PurchaseOrderModel::count(), '第二次生成应被拒绝，不产生新采购单');
    }
}