<?php

namespace Tests\Feature;

use App\Enums\ApprovalStatusEnum;
use App\Enums\IdentityVerificationStatusEnum;
use App\Enums\UserTypeEnum;
use App\Models\IdentityVerification;
use App\Models\Provider;
use App\Models\User;
use App\Models\Webhook;
use App\Services\PushNotificationService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Mail;
use Tests\TestCase;

/**
 * Exercita o webhook do Didit ponta a ponta usando os payloads reais capturados
 * nas sessoes de homologacao (tests/Fixtures/didit).
 */
class DiditWebhookTest extends TestCase
{
    use RefreshDatabase;

    private const SECRET = 'segredo-de-teste-do-webhook';

    protected function setUp(): void
    {
        parent::setUp();

        Mail::fake();
        $this->mock(PushNotificationService::class)->shouldReceive('sendToUser')->andReturnNull();

        config([
            'services.didit.webhook_secret'              => self::SECRET,
            'services.didit.max_attempts'                => 3,
            'services.didit.liveness_min_score'          => 80,
            'services.didit.face_match_min_score'        => 85,
        ]);
    }

    public function test_assinatura_valida_e_aceita(): void
    {
        $this->postWebhook($this->payload('decision_approved_cin.json', $this->makeProvider()->user_id))
            ->assertOk();
    }

    public function test_assinatura_invalida_e_rejeitada(): void
    {
        $payload = $this->payload('decision_approved_cin.json', $this->makeProvider()->user_id);

        $this->postJson('/api/webhooks/didit', $payload, [
            'X-Timestamp'    => (string) time(),
            'X-Signature-V2' => str_repeat('a', 64),
        ])->assertStatus(401);
    }

    public function test_timestamp_fora_da_janela_e_rejeitado(): void
    {
        $payload = $this->payload('decision_approved_cin.json', $this->makeProvider()->user_id);

        $this->postJson('/api/webhooks/didit', $payload, [
            'X-Timestamp'    => (string) (time() - 3600),
            'X-Signature-V2' => $this->sign($payload),
        ])->assertStatus(401);
    }

    /** O secret pode conter varios valores (producao, dev, sandbox) separados por virgula. */
    public function test_aceita_qualquer_um_dos_secrets_configurados(): void
    {
        config(['services.didit.webhook_secret' => 'outro-secret,'.self::SECRET]);

        $this->postWebhook($this->payload('decision_approved_cin.json', $this->makeProvider()->user_id))
            ->assertOk();
    }

    public function test_evento_repetido_e_ignorado(): void
    {
        $provider = $this->makeProvider();
        $payload  = $this->payload('decision_approved_cin.json', $provider->user_id);

        $this->postWebhook($payload)->assertOk();
        $this->postWebhook($payload)->assertOk();

        $this->assertSame(1, Webhook::where('provider', 'didit')->count());
        $this->assertSame(2, (int) Webhook::where('provider', 'didit')->first()->attempts_count);
    }

    /** Sessao limpa: OCR, liveness e face match aprovados, sem warning acionavel. */
    public function test_aprovado_sem_pendencia_aprova_o_prestador_automaticamente(): void
    {
        $provider = $this->makeProvider();

        $this->postWebhook($this->payload('decision_approved_cin.json', $provider->user_id))->assertOk();

        $provider->refresh();

        $this->assertSame(IdentityVerificationStatusEnum::APPROVED, $provider->identity_verification_status);
        $this->assertTrue($provider->document_verified);
        $this->assertNotNull($provider->identity_verified_at);
        $this->assertSame(ApprovalStatusEnum::ACCEPTED, $provider->approval_status);
    }

    /**
     * Warnings de duplicidade chegam com log_type = information e nao podem barrar
     * a aprovacao: eles aparecem em toda retentativa legitima.
     */
    public function test_warnings_informativos_nao_impedem_aprovacao(): void
    {
        $provider = $this->makeProvider();

        $this->postWebhook($this->payload('decision_approved_cnh.json', $provider->user_id))->assertOk();

        $verification = IdentityVerification::firstOrFail();

        $this->assertNotEmpty($verification->warnings);
        $this->assertEmpty($verification->actionableWarnings());
        $this->assertSame(
            IdentityVerificationStatusEnum::APPROVED,
            $provider->refresh()->identity_verification_status,
        );
    }

    /** CPF divergente: o Didit devolve In Review e o cadastro vai para a fila humana. */
    public function test_divergencia_de_cpf_vai_para_analise_manual(): void
    {
        $provider = $this->makeProvider();

        $this->postWebhook($this->payload('decision_in_review_cpf_mismatch.json', $provider->user_id))->assertOk();

        $provider->refresh();

        $this->assertSame(IdentityVerificationStatusEnum::IN_REVIEW, $provider->identity_verification_status);
        $this->assertFalse($provider->document_verified);
        $this->assertSame(ApprovalStatusEnum::PENDING, $provider->approval_status);

        $warnings = IdentityVerification::firstOrFail()->actionableWarnings();

        $this->assertContains(
            'IDENTIFICATION_NUMBER_MISMATCH_WITH_PROVIDED',
            array_column($warnings, 'risk'),
        );
    }

    /** Tentativa e chance de ser avaliado: so a reprovacao do Didit consome uma. */
    public function test_reprovacao_consome_tentativa_e_criar_sessao_nao(): void
    {
        $provider = $this->makeProvider();

        $this->assertSame(0, (int) $provider->identity_verification_attempts);

        $this->postWebhook($this->declinedPayload($provider->user_id))->assertOk();

        $provider->refresh();

        $this->assertSame(1, (int) $provider->identity_verification_attempts);
        $this->assertSame(IdentityVerificationStatusEnum::DECLINED, $provider->identity_verification_status);
    }

    /** Esgotadas as tentativas, o caso deixa de ser "tente de novo" e vira analise humana. */
    public function test_ultima_reprovacao_manda_para_analise_humana(): void
    {
        $provider = $this->makeProvider();

        $provider->forceFill(['identity_verification_attempts' => 2])->save();

        $this->postWebhook($this->declinedPayload($provider->user_id))->assertOk();

        $provider->refresh();

        $this->assertSame(3, (int) $provider->identity_verification_attempts);
        $this->assertSame(IdentityVerificationStatusEnum::IN_REVIEW, $provider->identity_verification_status);
    }

    public function test_declined_marca_como_reprovado_sem_aprovar_cadastro(): void
    {
        $provider = $this->makeProvider();

        $payload = $this->payload('decision_approved_cin.json', $provider->user_id);
        $payload['status'] = 'Declined';
        $payload['decision']['status'] = 'Declined';
        $payload['decision']['id_verifications'][0]['status'] = 'Declined';

        $this->postWebhook($payload)->assertOk();

        $provider->refresh();

        $this->assertSame(IdentityVerificationStatusEnum::DECLINED, $provider->identity_verification_status);
        $this->assertSame(ApprovalStatusEnum::PENDING, $provider->approval_status);
    }

    /** Not Started e In Progress apenas acompanham o progresso, sem decidir nada. */
    public function test_status_intermediario_nao_decide_nada(): void
    {
        $provider = $this->makeProvider();

        $payload = [
            'session_id'   => 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee',
            'webhook_type' => 'status.updated',
            'status'       => 'In Progress',
            'vendor_data'  => (string) $provider->user_id,
            'timestamp'    => time(),
        ];

        $this->postWebhook($payload)->assertOk();

        $this->assertSame(
            IdentityVerificationStatusEnum::NOT_STARTED,
            $provider->refresh()->identity_verification_status,
        );
        $this->assertSame('In Progress', IdentityVerification::firstOrFail()->didit_status);
    }

    public function test_score_baixo_de_face_match_barra_a_aprovacao(): void
    {
        config(['services.didit.face_match_min_score' => 99]);

        $provider = $this->makeProvider();

        $this->postWebhook($this->payload('decision_approved_cin.json', $provider->user_id))->assertOk();

        $this->assertSame(
            IdentityVerificationStatusEnum::IN_REVIEW,
            $provider->refresh()->identity_verification_status,
        );
    }

    //

    private function declinedPayload(int $userId): array
    {
        $payload = $this->payload('decision_approved_cin.json', $userId);

        $payload['event_id']                                 = 'evt-declined-'.$userId;
        $payload['status']                                   = 'Declined';
        $payload['decision']['status']                       = 'Declined';
        $payload['decision']['id_verifications'][0]['status'] = 'Declined';

        return $payload;
    }

    private function postWebhook(array $payload)
    {
        return $this->postJson('/api/webhooks/didit', $payload, [
            'X-Timestamp'    => (string) time(),
            'X-Signature-V2' => $this->sign($payload),
        ]);
    }

    private function sign(array $payload): string
    {
        return hash_hmac('sha256', $this->canonical($payload), self::SECRET);
    }

    /** Mesma canonicalizacao do Didit: chaves ordenadas, unicode e barras sem escape. */
    private function canonical(array $payload): string
    {
        $decoded = json_decode(json_encode($payload), false);

        $sort = function ($value) use (&$sort) {
            if (is_array($value)) {
                return array_map($sort, $value);
            }

            if ($value instanceof \stdClass) {
                $data = get_object_vars($value);
                ksort($data, SORT_STRING);

                return (object) array_map($sort, $data);
            }

            if (is_float($value) && floor($value) === $value) {
                return (int) $value;
            }

            return $value;
        };

        return json_encode($sort($decoded), JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
    }

    private function payload(string $fixture, int $userId): array
    {
        $decision = json_decode(file_get_contents(base_path("tests/Fixtures/didit/{$fixture}")), true);

        return [
            'event_id'     => 'evt-'.$fixture,
            'session_id'   => $decision['session_id'] ?? '11111111-2222-3333-4444-555555555555',
            'webhook_type' => 'status.updated',
            'status'       => $decision['status'],
            'vendor_data'  => (string) $userId,
            'timestamp'    => time(),
            'decision'     => $decision,
        ];
    }

    private function makeProvider(): Provider
    {
        $user = User::query()->create([
            'name'     => 'Prestador Teste',
            'email'    => 'prestador'.uniqid().'@teste.com',
            'password' => 'secret',
            'type'     => UserTypeEnum::PROVIDER->value,
        ]);

        return Provider::query()->create([
            'user_id'         => $user->id,
            'document'        => '06767310905',
            'birth_date'      => '1990-01-01',
            'approval_status' => ApprovalStatusEnum::PENDING->value,
        ]);
    }
}