<?php

namespace Tests\Unit\EcommerceFinance;

use Modules\EcommerceFinance\Services\StoreReceivingBalanceOverviewService;
use PHPUnit\Framework\TestCase;

class StoreReceivingBalanceOverviewServiceTest extends TestCase
{
    public function test_overview_sums_all_eight_platforms_for_the_selected_month(): void
    {
        $seenPeriods = [];
        $service = $this->service(function (string $platform, string $start, string $end) use (&$seenPeriods): array {
            $seenPeriods[] = [$platform, $start, $end];
            $index = array_search($platform, array_column(StoreReceivingBalanceOverviewService::PLATFORMS, 'slug'), true) + 1;

            return [
                'opening_balance' => 100.10 * $index,
                'income' => 10.20 * $index,
                'expense' => 1.25 * $index,
            ];
        });

        $result = $service->overview('2026-10');

        $this->assertSame('2026-10', $result['month']);
        $this->assertSame(['start' => '2026-10-01', 'end' => '2026-10-31'], $result['period']);
        $this->assertCount(8, $result['platforms']);
        $this->assertCount(8, $seenPeriods);
        $this->assertSame('taobao-alipay', $seenPeriods[0][0]);
        $this->assertSame('xiaohongshu', $seenPeriods[7][0]);
        $this->assertSame(3603.60, $result['summary']['opening_balance']);
        $this->assertSame(367.20, $result['summary']['income']);
        $this->assertSame(45.00, $result['summary']['expense']);
        $this->assertSame(3925.80, $result['summary']['balance']);
        $this->assertTrue($result['summary']['complete']);
        $this->assertSame(8, $result['summary']['available_platform_count']);
    }

    public function test_overview_does_not_report_a_total_when_an_opening_balance_is_missing(): void
    {
        $service = $this->service(function (string $platform): array {
            return [
                'opening_balance' => $platform === 'vipshop-jx' ? null : 25.0,
                'income' => 5.0,
                'expense' => 2.0,
            ];
        });

        $result = $service->overview('2026-09');

        $this->assertFalse($result['summary']['complete']);
        $this->assertNull($result['summary']['opening_balance']);
        $this->assertNull($result['summary']['income']);
        $this->assertNull($result['summary']['expense']);
        $this->assertNull($result['summary']['balance']);
        $this->assertSame(7, $result['summary']['available_platform_count']);
        $vipshopJx = array_values(array_filter(
            $result['platforms'],
            static fn (array $platform): bool => $platform['slug'] === 'vipshop-jx',
        ))[0];
        $this->assertFalse($vipshopJx['available']);
    }

    private function service(callable $summary): StoreReceivingBalanceOverviewService
    {
        return new class($summary) extends StoreReceivingBalanceOverviewService {
            public function __construct(private $summaryCallback)
            {
            }

            protected function fetchPlatformSummary(string $platform, string $start, string $end): array
            {
                return ($this->summaryCallback)($platform, $start, $end);
            }
        };
    }
}