<?php

namespace Tests\Feature;

use App\Jobs\AgentRunJob;
use App\Models\Message;
use App\Services\ChatService;
use App\Services\RunDispatcher;
use App\Services\RunLoop;
use App\Services\OutputSink;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Queue;
use Tests\TestCase;

class AgentRunTest extends TestCase
{
    use RefreshDatabase;

    public function test_dispatch_and_run_creates_agent_reply_and_statuses(): void
    {
        Queue::fake();
        $service = app(ChatService::class);
        $dispatcher = app(RunDispatcher::class);

        $session = $service->createSession('Run Session');
        $prompt = $service->appendMessage([
            'session_id' => $session->session_id,
            'role' => Message::ROLE_USER,
            'type' => 'user.prompt',
            'content' => 'hello agent',
        ]);

        $runId = $dispatcher->dispatchForPrompt($session->session_id, $prompt->message_id);

        Queue::assertPushed(AgentRunJob::class, function ($job) use ($session, $runId) {
            return $job->sessionId === $session->session_id && $job->runId === $runId;
        });

        // simulate worker execution
        (new AgentRunJob($session->session_id, $runId))->handle(
            app(RunLoop::class),
            app(OutputSink::class)
        );

        $messages = Message::query()
            ->where('session_id', $session->session_id)
            ->orderBy('seq')
            ->get();

        $this->assertTrue($messages->contains(fn ($m) => $m->type === 'run.status' && ($m->payload['status'] ?? null) === 'RUNNING'));
        $this->assertTrue($messages->contains(fn ($m) => $m->type === 'agent.message' && ($m->payload['run_id'] ?? null) === $runId));
        $this->assertTrue($messages->contains(fn ($m) => $m->type === 'run.status' && ($m->payload['status'] ?? null) === 'DONE'));
    }

    public function test_second_prompt_dispatches_new_run_after_first_completes(): void
    {
        Queue::fake();
        $service = app(ChatService::class);
        $dispatcher = app(RunDispatcher::class);

        $session = $service->createSession('Sequential Runs');
        $firstPrompt = $service->appendMessage([
            'session_id' => $session->session_id,
            'role' => Message::ROLE_USER,
            'type' => 'user.prompt',
            'content' => 'first run',
        ]);

        $firstRunId = $dispatcher->dispatchForPrompt($session->session_id, $firstPrompt->message_id);

        (new AgentRunJob($session->session_id, $firstRunId))->handle(
            app(RunLoop::class),
            app(OutputSink::class)
        );

        $secondPrompt = $service->appendMessage([
            'session_id' => $session->session_id,
            'role' => Message::ROLE_USER,
            'type' => 'user.prompt',
            'content' => 'second run',
        ]);

        $secondRunId = $dispatcher->dispatchForPrompt($session->session_id, $secondPrompt->message_id);

        $this->assertNotSame($firstRunId, $secondRunId);

        Queue::assertPushed(AgentRunJob::class, 2);
        Queue::assertPushed(AgentRunJob::class, function ($job) use ($secondRunId, $session) {
            return $job->runId === $secondRunId && $job->sessionId === $session->session_id;
        });
    }

    public function test_cancel_prevents_agent_reply_and_marks_canceled(): void
    {
        Queue::fake();
        $service = app(ChatService::class);
        $dispatcher = app(RunDispatcher::class);
        $loop = app(RunLoop::class);

        $session = $service->createSession('Cancel Session');
        $prompt = $service->appendMessage([
            'session_id' => $session->session_id,
            'role' => Message::ROLE_USER,
            'type' => 'user.prompt',
            'content' => 'please cancel',
        ]);

        $runId = $dispatcher->dispatchForPrompt($session->session_id, $prompt->message_id);

        $service->appendMessage([
            'session_id' => $session->session_id,
            'role' => Message::ROLE_USER,
            'type' => 'run.cancel.request',
            'payload' => ['run_id' => $runId],
        ]);

        $loop->run($session->session_id, $runId);

        $messages = Message::query()
            ->where('session_id', $session->session_id)
            ->get();

        $this->assertFalse($messages->contains(fn ($m) => $m->type === 'agent.message' && ($m->payload['run_id'] ?? null) === $runId));
        $this->assertTrue($messages->contains(fn ($m) => $m->type === 'run.status' && ($m->payload['status'] ?? null) === 'CANCELED'));
    }
}