<?php

declare(strict_types=1);

namespace HyperfTest\Cases\Unit\Service;

use App\Service\DashboardStatsService;
use PHPUnit\Framework\TestCase;

/**
 * DashboardStatsService 单元测试
 *
 * 覆盖常量定义、枚举校验等纯逻辑（聚合查询由集成测试覆盖）
 *
 * @internal
 * @coversNothing
 */
class DashboardStatsServiceTest extends TestCase
{
    private DashboardStatsService $service;

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

    // ========== 常量校验 ==========

    public function test_valid_data_types_contains_all_expected_types(): void
    {
        $types = DashboardStatsService::VALID_DATA_TYPES;

        $this->assertContains('order', $types);
        $this->assertContains('product', $types);
        $this->assertContains('refund', $types);
        $this->assertContains('inventory', $types);
        $this->assertCount(4, $types);
    }

    public function test_valid_group_by_contains_all_expected_values(): void
    {
        $values = DashboardStatsService::VALID_GROUP_BY;

        $this->assertContains('day', $values);
        $this->assertContains('week', $values);
        $this->assertContains('month', $values);
        $this->assertCount(3, $values);
    }

    public function test_valid_dimensions_contains_all_expected_values(): void
    {
        $values = DashboardStatsService::VALID_DIMENSIONS;

        $this->assertContains('company', $values);
        $this->assertContains('platform', $values);
        $this->assertContains('store', $values);
        $this->assertCount(3, $values);
    }

    // ========== buildScopeCondition（通过反射测试私有方法） ==========

    public function test_build_scope_condition_all_returns_empty(): void
    {
        $bindings = ['2026-01-01', '2026-01-31'];
        $result = $this->invokeBuildScope('all', [], $bindings);

        $this->assertSame('', $result);
        $this->assertCount(2, $bindings);
    }

    public function test_build_scope_condition_store_returns_in_clause(): void
    {
        $bindings = ['2026-01-01', '2026-01-31'];
        $result = $this->invokeBuildScope('store', [1, 2, 3], $bindings);

        $this->assertStringContainsString('store_id IN', $result);
        $this->assertCount(5, $bindings); // 2 原始 + 3 scope_ids
        $this->assertSame(1, $bindings[2]);
        $this->assertSame(2, $bindings[3]);
        $this->assertSame(3, $bindings[4]);
    }

    public function test_build_scope_condition_platform_returns_in_clause(): void
    {
        $bindings = ['2026-01-01', '2026-01-31'];
        $result = $this->invokeBuildScope('platform', [10, 20], $bindings);

        $this->assertStringContainsString('platform_id IN', $result);
        $this->assertCount(4, $bindings);
    }

    public function test_build_scope_condition_empty_ids_returns_empty(): void
    {
        $bindings = ['2026-01-01', '2026-01-31'];
        $result = $this->invokeBuildScope('store', [], $bindings);

        $this->assertSame('', $result);
        $this->assertCount(2, $bindings);
    }

    // ========== getDateTrunc（通过反射测试私有方法） ==========

    public function test_date_trunc_day(): void
    {
        $result = $this->invokeGetDateTrunc('day');
        $this->assertStringContainsString("'day'", $result);
        $this->assertStringContainsString('DATE_TRUNC', $result);
    }

    public function test_date_trunc_week(): void
    {
        $result = $this->invokeGetDateTrunc('week');
        $this->assertStringContainsString("'week'", $result);
    }

    public function test_date_trunc_month(): void
    {
        $result = $this->invokeGetDateTrunc('month');
        $this->assertStringContainsString("'month'", $result);
    }

    // ========== TYPE_TABLE_MAP 映射 ==========

    public function test_type_table_map_covers_order_product_refund(): void
    {
        $reflection = new \ReflectionClass(DashboardStatsService::class);
        $constant = $reflection->getReflectionConstant('TYPE_TABLE_MAP');
        $map = $constant->getValue();

        $this->assertSame('orders', $map['order']);
        $this->assertSame('products', $map['product']);
        $this->assertSame('refunds', $map['refund']);
        $this->assertArrayNotHasKey('inventory', $map);
    }

    public function test_dimension_table_map_covers_all_dimensions(): void
    {
        $reflection = new \ReflectionClass(DashboardStatsService::class);
        $constant = $reflection->getReflectionConstant('DIMENSION_TABLE_MAP');
        $map = $constant->getValue();

        $this->assertArrayHasKey('company', $map);
        $this->assertArrayHasKey('platform', $map);
        $this->assertArrayHasKey('store', $map);

        foreach ($map as $config) {
            $this->assertArrayHasKey('table', $config);
            $this->assertArrayHasKey('name_field', $config);
        }
    }

    // ========== Helper ==========

    private function invokeBuildScope(string $scope_type, array $scope_ids, array &$bindings): string
    {
        $method = new \ReflectionMethod(DashboardStatsService::class, 'buildScopeCondition');
        $args = [$scope_type, $scope_ids, &$bindings];
        return $method->invokeArgs($this->service, $args);
    }

    private function invokeGetDateTrunc(string $group_by): string
    {
        $method = new \ReflectionMethod(DashboardStatsService::class, 'getDateTrunc');
        $method->setAccessible(true);
        return $method->invoke($this->service, $group_by);
    }
}
