<?php

namespace Tests\Unit;

use App\Services\Billing\BillingClient;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use Tests\TestCase;

class BillingClientDebitTest extends TestCase
{
    public function test_debit_returns_payload_and_caches_balance(): void
    {
        config([
            'billing.api_url' => 'https://ladill.com/api/billing',
            'billing.api_key' => 'test-key',
            'billing.force_ip' => '',
        ]);

        Http::fake([
            'https://ladill.com/api/billing/debit' => Http::response([
                'transaction_id' => 1,
                'reference' => 'R1',
                'type' => 'debit',
                'amount_minor' => 500,
                'balance_after_minor' => 1200,
                'service' => 'qr',
            ], 201),
            'https://ladill.com/api/billing/balance*' => Http::response([
                'balance_minor' => 9999,
                'currency' => 'GHS',
            ]),
        ]);

        Cache::flush();
        $client = app(BillingClient::class);

        $result = $client->debit('user-1', 500, 'qr', 'qr_create', 'REF-1', 9, 'test');

        $this->assertIsArray($result);
        $this->assertSame(1200, $result['balance_after_minor']);
        // Should use debit response cache, not hit balance endpoint.
        $this->assertSame(1200, $client->balanceMinor('user-1'));
        Http::assertSentCount(1);
    }

    public function test_can_afford_uses_balance_not_extra_endpoint(): void
    {
        config([
            'billing.api_url' => 'https://ladill.com/api/billing',
            'billing.api_key' => 'test-key',
            'billing.force_ip' => '',
        ]);

        Http::fake([
            'https://ladill.com/api/billing/balance*' => Http::response([
                'balance_minor' => 500,
                'currency' => 'GHS',
            ]),
        ]);

        Cache::flush();
        $client = app(BillingClient::class);

        $this->assertTrue($client->canAfford('user-1', 500));
        $this->assertFalse($client->canAfford('user-1', 501));
        Http::assertSentCount(1);
    }
}