<?php

namespace Tests\Unit\Services;

use App\Models\AiEditRequest;
use App\Models\AiStyle;
use App\Models\Event;
use App\Models\Photo;
use App\Services\AiEditing\AiObservabilityService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;
use Tests\TestCase;

class AiObservabilityServiceTest extends TestCase
{
    use RefreshDatabase;

    public function test_it_records_terminal_outcomes_in_cache(): void
    {
        $request = $this->makeRequest(AiEditRequest::STATUS_PROCESSING);

        app(AiObservabilityService::class)->recordTerminalOutcome(
            $request,
            AiEditRequest::STATUS_SUCCEEDED,
            1200,
            false,
            'process'
        );

        $bucket = now()->format('YmdH');
        $prefix = sprintf('ai-editing:obs:tenant:%d:event:%d:hour:%s', $request->tenant_id, $request->event_id, $bucket);

        $this->assertSame(1, (int) Cache::get($prefix.':total'));
        $this->assertSame(1, (int) Cache::get($prefix.':succeeded'));
        $this->assertSame(1200, (int) Cache::get($prefix.':duration_total_ms'));
    }

    public function test_it_logs_failure_rate_alert_when_threshold_is_reached(): void
    {
        config([
            'ai-editing.observability.failure_rate_alert_threshold' => 0.5,
            'ai-editing.observability.failure_rate_min_samples' => 1,
        ]);

        $request = $this->makeRequest(AiEditRequest::STATUS_PROCESSING);
        Log::spy();

        app(AiObservabilityService::class)->recordTerminalOutcome(
            $request,
            AiEditRequest::STATUS_FAILED,
            500,
            false,
            'poll'
        );

        Log::shouldHaveReceived('warning')
            ->withArgs(function (string $message, array $context): bool {
                return $message === 'AI failure-rate alert threshold reached'
                    && isset($context['failure_rate'])
                    && $context['failure_rate'] >= 0.5;
            })
            ->once();
    }

    private function makeRequest(string $status): AiEditRequest
    {
        $event = Event::factory()->create(['status' => 'published']);
        $photo = Photo::factory()->for($event)->create([
            'tenant_id' => $event->tenant_id,
            'status' => 'approved',
        ]);
        $style = AiStyle::query()->create([
            'key' => 'obs-style',
            'name' => 'Observability Style',
            'provider' => 'runware',
            'provider_model' => 'runware-default',
            'is_active' => true,
        ]);

        return AiEditRequest::query()->create([
            'tenant_id' => $event->tenant_id,
            'event_id' => $event->id,
            'photo_id' => $photo->id,
            'style_id' => $style->id,
            'provider' => 'runware',
            'provider_model' => 'runware-default',
            'status' => $status,
            'safety_state' => 'pending',
            'prompt' => 'Observability',
            'idempotency_key' => 'obs-'.uniqid('', true),
            'queued_at' => now()->subMinute(),
            'started_at' => now()->subSeconds(30),
        ]);
    }
}