<?php

use App\Enums\ApplicationDeploymentStatus;
use App\Jobs\ApplicationDeploymentJob;
use App\Models\Application;
use App\Models\ApplicationDeploymentQueue;
use App\Models\Environment;
use App\Models\InstanceSettings;
use App\Models\Project;
use App\Models\Server;
use App\Models\StandaloneDocker;
use App\Models\Team;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Process;
use Illuminate\Support\Facades\Queue;

uses(RefreshDatabase::class);

beforeEach(function () {
    config([
        'cache.default' => 'array',
        'session.driver' => 'array',
        'queue.default' => 'sync',
        'app.maintenance.driver' => 'file',
    ]);

    InstanceSettings::unguarded(fn () => InstanceSettings::updateOrCreate(['id' => 0], ['is_api_enabled' => true]));

    // Create a team with owner
    $this->team = Team::factory()->create();
    $this->user = User::factory()->create();
    $this->team->members()->attach($this->user->id, ['role' => 'owner']);

    session(['currentTeam' => $this->team]);

    // Create an API token for the user
    $this->token = $this->user->createToken('test-token', ['*']);
    $this->bearerToken = $this->token->plainTextToken;

    // Create a server for the team
    $this->server = Server::factory()->create(['team_id' => $this->team->id]);
});

describe('POST /api/v1/deployments/{uuid}/cancel', function () {
    test('returns 401 when not authenticated', function () {
        $response = $this->postJson('/api/v1/deployments/fake-uuid/cancel');

        $response->assertStatus(401);
    });

    test('returns 404 when deployment not found', function () {
        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson('/api/v1/deployments/non-existent-uuid/cancel');

        $response->assertStatus(404);
        $response->assertJson(['message' => 'Deployment not found.']);
    });

    test('returns 403 when user does not own the deployment', function () {
        // Create another team and server
        $otherTeam = Team::factory()->create();
        $otherServer = Server::factory()->create(['team_id' => $otherTeam->id]);

        // Create a deployment on the other team's server
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'test-deployment-uuid',
            'application_id' => 1,
            'server_id' => $otherServer->id,
            'status' => ApplicationDeploymentStatus::IN_PROGRESS->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertStatus(403);
        $response->assertJson(['message' => 'You do not have permission to cancel this deployment.']);
    });

    test('returns 400 when deployment is already finished', function () {
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'finished-deployment-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'status' => ApplicationDeploymentStatus::FINISHED->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertStatus(400);
        expect($response->json('message'))->toContain('Deployment cannot be cancelled');
    });

    test('returns 400 when deployment is already failed', function () {
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'failed-deployment-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'status' => ApplicationDeploymentStatus::FAILED->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertStatus(400);
        expect($response->json('message'))->toContain('Deployment cannot be cancelled');
    });

    test('returns 400 when deployment is already cancelled', function () {
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'cancelled-deployment-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'status' => ApplicationDeploymentStatus::CANCELLED_BY_USER->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertStatus(400);
        expect($response->json('message'))->toContain('Deployment cannot be cancelled');
    });

    test('cancels queued deployment and updates status in database', function () {
        $otherTeam = Team::factory()->create();
        $buildServer = Server::factory()->create(['team_id' => $otherTeam->id]);
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'queued-deployment-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'build_server_id' => $buildServer->id,
            'status' => ApplicationDeploymentStatus::QUEUED->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertSuccessful()->assertJson([
            'message' => 'Deployment cancelled successfully.',
            'deployment_uuid' => $deployment->deployment_uuid,
            'status' => ApplicationDeploymentStatus::CANCELLED_BY_USER->value,
        ]);

        $deployment->refresh();
        expect($deployment->status)->toBe(ApplicationDeploymentStatus::CANCELLED_BY_USER->value);
    });

    test('starts the next queued deployment after cancellation', function () {
        Queue::fake();

        $otherTeam = Team::factory()->create();
        $buildServer = Server::factory()->create(['team_id' => $otherTeam->id]);
        $destination = StandaloneDocker::where('server_id', $this->server->id)->firstOrFail();
        $project = Project::factory()->create(['team_id' => $this->team->id]);
        $environment = Environment::factory()->create(['project_id' => $project->id]);
        $application = Application::factory()->create([
            'environment_id' => $environment->id,
            'destination_id' => $destination->id,
            'destination_type' => $destination->getMorphClass(),
        ]);
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'cancelled-queue-head-uuid',
            'application_id' => $application->id,
            'server_id' => $this->server->id,
            'build_server_id' => $buildServer->id,
            'destination_id' => $destination->id,
            'commit' => 'first-commit',
            'pull_request_id' => 0,
            'status' => ApplicationDeploymentStatus::IN_PROGRESS->value,
        ]);
        $nextDeployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'next-queued-deployment-uuid',
            'application_id' => $application->id,
            'server_id' => $this->server->id,
            'destination_id' => $destination->id,
            'commit' => 'second-commit',
            'pull_request_id' => 0,
            'status' => ApplicationDeploymentStatus::QUEUED->value,
        ]);

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertSuccessful();
        expect($nextDeployment->fresh()->status)->toBe(ApplicationDeploymentStatus::IN_PROGRESS->value);
        Queue::assertPushed(ApplicationDeploymentJob::class, fn (ApplicationDeploymentJob $job) => $job->application_deployment_queue_id === $nextDeployment->id);
    });

    test('updates only a still cancellable deployment and treats cleanup as best effort', function () {
        Process::fake(fn () => throw new RuntimeException('SSH unavailable'));

        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'atomic-cancellation-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'status' => ApplicationDeploymentStatus::IN_PROGRESS->value,
        ]);
        $updates = [];
        DB::listen(function ($query) use (&$updates) {
            if (str_starts_with(strtolower(ltrim($query->sql)), 'update')) {
                $updates[] = strtolower($query->sql);
            }
        });

        $response = $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        $response->assertSuccessful();
        expect($deployment->fresh()->status)->toBe(ApplicationDeploymentStatus::CANCELLED_BY_USER->value)
            ->and(collect($updates)->contains(
                fn (string $sql) => str_contains($sql, 'application_deployment_queues')
                    && str_contains($sql, 'status')
                    && str_contains($sql, ' in '),
            ))->toBeTrue();
    });

    test('cancels in-progress deployment and updates status in database', function () {
        $deployment = ApplicationDeploymentQueue::create([
            'deployment_uuid' => 'in-progress-deployment-uuid',
            'application_id' => 1,
            'server_id' => $this->server->id,
            'status' => ApplicationDeploymentStatus::IN_PROGRESS->value,
        ]);

        $this->withHeaders([
            'Authorization' => 'Bearer '.$this->bearerToken,
            'Content-Type' => 'application/json',
        ])->postJson("/api/v1/deployments/{$deployment->deployment_uuid}/cancel");

        // The controller updates status before SSH calls, so DB state is always correct
        $deployment->refresh();
        expect($deployment->status)->toBe(ApplicationDeploymentStatus::CANCELLED_BY_USER->value);
    });
});