<?php

declare(strict_types=1);

namespace HyperfTest\Cases\Unit\Service;

use App\Service\SkuService;
use HyperfTest\TestCase;

/**
 * SkuService 单元测试
 *
 * 验证 SKU 自动生成策略和辅助方法
 *
 * @internal
 * @coversNothing
 */
class SkuServiceTest extends TestCase
{
    private SkuService $service;

    protected function setUp(): void
    {
        parent::setUp();
        $this->service = new SkuService();
    }

    public function test_generate_prefix_sku(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'prefix',
            origin_sku: '0032',
            prefix: 'C03',
        );

        $this->assertSame('C03_0032', $result);
    }

    public function test_generate_prefix_sku_without_prefix(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'prefix',
            origin_sku: '0032',
            prefix: '',
        );

        $this->assertSame('0032', $result);
    }

    public function test_generate_prefix_random_sku(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'prefix_random',
            origin_sku: '0032',
            prefix: 'C03',
            random_length: 4,
        );

        $this->assertStringStartsWith('C03_', $result);
        // prefix(3) + _(1) + random(4) = 8
        $this->assertSame(8, strlen($result));
    }

    public function test_generate_prefix_random_sku_without_prefix(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'prefix_random',
            origin_sku: '0032',
            prefix: '',
            random_length: 6,
        );

        // 纯随机部分，6 个字符
        $this->assertSame(6, strlen($result));
    }

    public function test_generate_manual_sku(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'manual',
            origin_sku: '0032',
            manual_value: 'CUSTOM_SKU_001',
        );

        $this->assertSame('CUSTOM_SKU_001', $result);
    }

    public function test_generate_manual_sku_with_null_value(): void
    {
        $result = $this->service->generatePlatformOuterSku(
            strategy: 'manual',
            origin_sku: '0032',
            manual_value: null,
        );

        $this->assertSame('', $result);
    }

    public function test_generate_invalid_strategy_throws_exception(): void
    {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('不支持的生成策略: unknown');

        $this->service->generatePlatformOuterSku(
            strategy: 'unknown',
            origin_sku: '0032',
        );
    }

    public function test_build_strategy_record_prefix(): void
    {
        $result = $this->service->buildStrategyRecord('prefix', 'C03');
        $this->assertSame('prefix:C03', $result);
    }

    public function test_build_strategy_record_prefix_random(): void
    {
        $result = $this->service->buildStrategyRecord('prefix_random', 'C03', 4);
        $this->assertSame('prefix_random:C03:4', $result);
    }

    public function test_build_strategy_record_manual(): void
    {
        $result = $this->service->buildStrategyRecord('manual');
        $this->assertSame('manual', $result);
    }
}