<?php

namespace Tests\Unit\EcommerceFinance;

use Carbon\CarbonImmutable;
use Mockery;
use Modules\EcommerceFinance\Repositories\BusinessInformationMirrorRepository;
use Modules\EcommerceFinance\Repositories\StoreReportRepository;
use Modules\EcommerceFinance\Services\InternalFlowProjection;
use Tests\TestCase;

class InternalFlowProjectionTest extends TestCase
{
    public function testForecastUsesPreviousMonthIncomeAggregatedByEntity(): void
    {
        $stores = [
            ['erp_store_name' => '店铺A', 'company_name' => '原主体'],
            ['erp_store_name' => '店铺B', 'company_name' => '原主体'],
        ];
        $reportStores = array_map(
            static fn (array $store): array => $store + ['system_company_name' => $store['company_name']],
            $stores,
        );
        $businessInformation = Mockery::mock(BusinessInformationMirrorRepository::class);
        $businessInformation->shouldReceive('receivingAccountStores')->once()->andReturn($stores);
        $storeReports = Mockery::mock(StoreReportRepository::class);
        $storeReports->shouldReceive('rows')
            ->once()
            ->with($reportStores, 2026, [])
            ->andReturn([
                ['entity' => '示例甲有限公司', 'income_10' => 1000000],
                ['entity' => '示例甲有限公司', 'income_10' => 250000.5],
                ['entity' => '示例乙有限公司', 'income_10' => 0],
                ['entity' => '示例丙有限公司', 'income_10' => null],
                ['entity' => '', 'income_10' => 999999],
            ]);

        $projection = new InternalFlowProjection($businessInformation, $storeReports);
        $result = $projection->forMonth(CarbonImmutable::create(2026, 11, 9, 10, 0, 0, 'Asia/Shanghai'));

        $this->assertSame('2026-11', $result['forecast_month']);
        $this->assertSame('11月', $result['forecast_month_label']);
        $this->assertSame('2026-10', $result['source_month']);
        $this->assertSame('10月', $result['source_month_label']);
        $this->assertEqualsWithDelta(1250000.5, $result['sales_by_company']['示例甲有限公司'], 0.000001);
        $this->assertSame(0.0, $result['sales_by_company']['示例乙有限公司']);
        $this->assertNull($result['sales_by_company']['示例丙有限公司']);
        $this->assertArrayNotHasKey('', $result['sales_by_company']);
    }

    public function testJanuaryForecastReadsDecemberOfPreviousYear(): void
    {
        $stores = [['erp_store_name' => '店铺A', 'company_name' => '示例甲有限公司']];
        $reportStores = [
            $stores[0] + ['system_company_name' => $stores[0]['company_name']],
        ];
        $businessInformation = Mockery::mock(BusinessInformationMirrorRepository::class);
        $businessInformation->shouldReceive('receivingAccountStores')->once()->andReturn($stores);
        $storeReports = Mockery::mock(StoreReportRepository::class);
        $storeReports->shouldReceive('rows')
            ->once()
            ->with($reportStores, 2025, [])
            ->andReturn([['entity' => '示例甲有限公司', 'income_12' => 880000]]);

        $projection = new InternalFlowProjection($businessInformation, $storeReports);
        $result = $projection->forMonth(CarbonImmutable::create(2026, 1, 5, 12, 0, 0, 'Asia/Shanghai'));

        $this->assertSame('2026-01', $result['forecast_month']);
        $this->assertSame('2025-12', $result['source_month']);
        $this->assertEqualsWithDelta(880000.0, $result['sales_by_company']['示例甲有限公司'], 0.000001);
    }
}