<?php

namespace Tests\Unit;

use App\Services\Agent\AgentCommissionService;
use PHPUnit\Framework\TestCase;

class AgentCommissionSpreadTest extends TestCase
{
    public function test_parent_keeps_the_rate_difference_on_child_volume(): void
    {
        $this->assertSame('1.0000', AgentCommissionService::rateSpread('5', '4'));
        $this->assertSame('0.0000', AgentCommissionService::rateSpread('4', '4'));
        $this->assertSame('0.0000', AgentCommissionService::rateSpread('4', '5'));
    }

    public function test_own_members_use_full_rate_and_child_members_use_spread(): void
    {
        $ownFlow = AgentCommissionService::amountByRate('1000', '5');
        $childFlow = AgentCommissionService::amountByRate('1000', AgentCommissionService::rateSpread('5', '4'));
        $this->assertSame('50.0000', $ownFlow);
        $this->assertSame('10.0000', $childFlow);
        $this->assertSame('60.0000', bcadd($ownFlow, $childFlow, 4));
    }

    public function test_profit_commission_uses_member_loss_only(): void
    {
        $this->assertSame('100.0000', AgentCommissionService::profitBase('-100'));
        $this->assertSame('0.0000', AgentCommissionService::profitBase('80'));
        $own = AgentCommissionService::amountByRate(AgentCommissionService::profitBase('-200'), '5');
        $child = AgentCommissionService::amountByRate(
            AgentCommissionService::profitBase('-200'),
            AgentCommissionService::rateSpread('5', '4')
        );
        $this->assertSame('10.0000', $own);
        $this->assertSame('2.0000', $child);
    }
}