<?php

namespace Tests\Unit;

use App\Services\VmMetricsService;
use Illuminate\Support\Facades\Http;
use Tests\TestCase;

class VmMetricsHistoryTest extends TestCase
{
    public function test_history_is_bucketed_and_averaged(): void
    {
        config(['portal-monitor.url' => 'http://monitor', 'portal-monitor.api_key' => 'k']);
        Http::fake(['monitor/*' => Http::response(['data' => [
            ['timestamp' => '2026-10-27T00:00:10Z', 'cpu_usage_percent' => 10, 'guest_memory_usage_percent' => 40],
            ['timestamp' => '2026-10-27T00:00:20Z', 'cpu_usage_percent' => 30, 'guest_memory_usage_percent' => null],
            ['timestamp' => '2026-10-27T00:30:00Z', 'cpu_usage_percent' => 50],
        ]])]);

        $points = app(VmMetricsService::class)->history(
            'vm-1',
            new \DateTimeImmutable('2026-10-27T00:00:00Z'),
            new \DateTimeImmutable('2026-10-27T01:00:00Z'),
            maxPoints: 4,
        );

        $this->assertCount(2, $points);
        $this->assertSame(20.0, $points[0]['cpu']);
        $this->assertSame(40.0, $points[0]['mem']);
        $this->assertNull($points[1]['mem']);
    }
}