<?php
declare(strict_types=1);
namespace App\Tests;

use App\Api\ThresholdCatalog;
use App\Http\Request;
use App\Auth\ArraySessionStore;
use App\Dashboard\{AdminConfigController, SuppressionController, ComplianceController};
use App\Tests\Support\{InMemoryThresholdRepository, InMemoryAlertRepository, InMemoryDeviceRepository,
    InMemoryAuditRepository, InMemorySuppressionRepository, InMemoryEventRepository,
    InMemorySnapshotRepository, InMemoryActionRepository, InMemoryRiskControlRepository,
    InMemoryHandoverRepository};
use PHPUnit\Framework\TestCase;

/**
 * Threshold editing, alarm suppression and the compliance surfaces.
 *
 * These are the screens that let a delivered site tune and operate itself. Before them the
 * customer's only route to a threshold was phpMyAdmin, and their only route to silencing a
 * maintenance window was to ignore the alarms — which is how a safety console ends up switched
 * off.
 */
final class SafetyConfigTest extends TestCase
{
    private function sess(string $role = 'admin', ?string $site = null): ArraySessionStore
    {
        $s = new ArraySessionStore();
        $s->set('user_id', 1); $s->set('username', '관리자'); $s->set('role', $role); $s->set('csrf', 'tok');
        if ($site !== null) $s->set('site_scope', $site);
        return $s;
    }

    private function post(array $body): Request
    {
        return new Request('POST', '/x', ['X-Csrf-Token' => 'tok'], json_encode($body), [], []);
    }

    private function get(array $query = []): Request
    {
        return new Request('GET', '/x', [], '', $query, []);
    }

    // ================================================================ thresholds

    private function admin(string $role = 'admin', ?string $site = null,
                          ?InMemoryThresholdRepository $thr = null,
                          ?InMemoryDeviceRepository $dev = null,
                          ?InMemoryAuditRepository $audit = null,
                          ?InMemoryAlertRepository $alerts = null): AdminConfigController
    {
        return new AdminConfigController(
            $thr ?? new InMemoryThresholdRepository(),
            $alerts ?? new InMemoryAlertRepository(),
            $dev ?? new InMemoryDeviceRepository(['pi-1' => 's'], ['pi-1' => 1]),
            $audit ?? new InMemoryAuditRepository(),
            $this->sess($role, $site)
        );
    }

    public function testThresholdEditingIsAdminOnly(): void
    {
        $this->assertSame(403, $this->admin('operator')->thresholds($this->get())->status());
        $this->assertSame(403, $this->admin('viewer')->thresholds($this->get())->status());
        $this->assertSame(200, $this->admin('admin')->thresholds($this->get())->status());
    }

    public function testCatalogTravelsWithTheValuesSoTheEditorCanBoundItsInputs(): void
    {
        $res = $this->admin()->thresholds($this->get());
        $data = json_decode($res->body(), true);
        $this->assertArrayHasKey('fall_prone_s', $data['catalog']);
        // assertEquals, not assertSame: a whole float survives the JSON round trip as an int.
        $this->assertEquals(30.0, $data['catalog']['fall_prone_s']['max']);
        $this->assertEquals(1.0, $data['catalog']['fall_prone_s']['min']);
    }

    public function testOutOfRangeValueIsRejected(): void
    {
        $c = $this->admin();
        $res = $c->saveThreshold($this->post(['device_id' => 'pi-1', 'key' => 'fall_prone_s', 'value' => 900]));
        $this->assertSame(400, $res->status());
        $this->assertSame('out_of_range', json_decode($res->body(), true)['error']);
    }

    public function testNonFiniteValueIsRejected(): void
    {
        // edge/config.py 가 기동 시 거부하는 바로 그 값들 — 그때는 이미 공장 안 장비가
        // 재시작 루프에 빠진 뒤다. 키보드 앞에서 막는다.
        foreach (['nan', 'inf', '-inf'] as $bad) {
            $res = $this->admin()->saveThreshold(
                $this->post(['device_id' => 'pi-1', 'key' => 'cooldown_s', 'value' => $bad]));
            $this->assertSame(400, $res->status(), "rejects $bad");
        }
    }

    public function testUnknownKeyIsRejectedRatherThanDeliveredAndIgnored(): void
    {
        $res = $this->admin()->saveThreshold(
            $this->post(['device_id' => 'pi-1', 'key' => 'fall_prone_seconds', 'value' => 3]));
        $this->assertSame(400, $res->status());
        $this->assertSame('unknown_key', json_decode($res->body(), true)['error']);
    }

    public function testSaveBumpsConfigVersionSoTheChangeReachesTheDevice(): void
    {
        $dev = new InMemoryDeviceRepository(['pi-1' => 's'], ['pi-1' => 4]);
        $c = $this->admin('admin', null, null, $dev);
        $this->assertSame(200, $c->saveThreshold(
            $this->post(['device_id' => 'pi-1', 'key' => 'fall_prone_s', 'value' => 5]))->status());
        $this->assertSame(5, $dev->configVersion('pi-1'),
            '버전이 오르지 않으면 값은 DB 에만 남고 장비는 옛 설정으로 계속 돈다');
    }

    public function testSaveIsAudited(): void
    {
        $audit = new InMemoryAuditRepository();
        $c = $this->admin('admin', null, null, null, $audit);
        $c->saveThreshold($this->post(['device_id' => 'pi-1', 'key' => 'fall_prone_s', 'value' => 5]));
        $this->assertCount(1, $audit->log);
        $this->assertSame('threshold_set', $audit->log[0]['act']);
    }

    public function testScopedAdminCannotRetuneAnotherSitesDevice(): void
    {
        $dev = new InMemoryDeviceRepository(['pi-1' => 's'], ['pi-1' => 1], [], ['pi-1' => 'factory-a']);
        $c = $this->admin('admin', 'factory-b', null, $dev);
        $this->assertSame(404, $c->saveThreshold(
            $this->post(['device_id' => 'pi-1', 'key' => 'fall_prone_s', 'value' => 5]))->status());
    }

    public function testCsrfIsRequired(): void
    {
        $c = $this->admin();
        $noToken = new Request('POST', '/x', [], json_encode(['device_id' => 'pi-1', 'key' => 'fall_prone_s', 'value' => 5]), [], []);
        $this->assertSame(403, $c->saveThreshold($noToken)->status());
    }

    public function testIntegerKnobRejectsAFraction(): void
    {
        [$ok, $err] = ThresholdCatalog::normalize('infer_every', 1.5);
        $this->assertFalse($ok);
        $this->assertSame('not_integer', $err);
    }

    public function testNormalizationIsStableSoOneValueHasOneStoredForm(): void
    {
        [, $a] = ThresholdCatalog::normalize('fall_prone_s', '3');
        [, $b] = ThresholdCatalog::normalize('fall_prone_s', 3.0);
        [, $c] = ThresholdCatalog::normalize('fall_prone_s', '3.000');
        $this->assertSame($a, $b);
        $this->assertSame($b, $c);
    }

    // ================================================================ alert channels

    public function testWebhookTokenIsNeverEchoedBack(): void
    {
        $alerts = new InMemoryAlertRepository();
        $c = $this->admin('admin', null, null, null, null, $alerts);
        $c->saveChannel($this->post(['kind' => 'webhook', 'name' => 'groupware', 'enabled' => 1,
            'min_severity' => 'high', 'config' => ['url' => 'https://in.house/hook', 'token' => 'SECRET']]));
        $body = json_decode($c->channels($this->get())->body(), true);
        $this->assertSame('••••••••', $body['channels'][0]['config']['token'],
            '설정 화면을 화면공유해도 연동 키가 새지 않아야 한다');
    }

    public function testEscalationStepRequiresADelay(): void
    {
        $c = $this->admin();
        $res = $c->saveChannel($this->post(['kind' => 'email', 'name' => 'manager', 'enabled' => 1,
            'min_severity' => 'critical', 'step' => 1, 'escalate_after_s' => 0,
            'config' => ['to' => 'a@b.c']]));
        $this->assertSame(400, $res->status(), '지연 0 짜리 에스컬레이션은 즉시 채널과 같이 울린다');
    }

    public function testWebhookRejectsNonHttpUrl(): void
    {
        $c = $this->admin();
        $res = $c->saveChannel($this->post(['kind' => 'webhook', 'name' => 'x', 'enabled' => 1,
            'min_severity' => 'high', 'config' => ['url' => 'file:///etc/passwd']]));
        $this->assertSame(400, $res->status());
    }

    public function testEmailChannelNeedsAValidRecipient(): void
    {
        $c = $this->admin();
        $res = $c->saveChannel($this->post(['kind' => 'email', 'name' => 'x', 'enabled' => 1,
            'min_severity' => 'high', 'config' => ['to' => 'not-an-email']]));
        $this->assertSame(400, $res->status());
    }

    // ================================================================ suppression

    private function suppression(string $role = 'operator', ?string $site = null,
                                 ?InMemorySuppressionRepository $repo = null,
                                 ?InMemoryEventRepository $events = null): SuppressionController
    {
        $ev = $events ?? new InMemoryEventRepository();
        return new SuppressionController(
            $repo ?? new InMemorySuppressionRepository(), $ev,
            new InMemoryDeviceRepository(['pi-1' => 's'], ['pi-1' => 1]),
            new InMemoryAuditRepository(), $this->sess($role, $site)
        );
    }

    public function testSuppressionRequiresAReason(): void
    {
        $res = $this->suppression()->create($this->post(
            ['scope_type' => 'device', 'scope_id' => 'pi-1', 'minutes' => 30, 'reason' => '']));
        $this->assertSame(400, $res->status());
        $this->assertSame('reason_required', json_decode($res->body(), true)['error']);
    }

    public function testSuppressionCannotBeOpenEnded(): void
    {
        $c = $this->suppression();
        // 8시간(한 교대) 상한. 그 이상은 의도적인 재발급을 강제한다.
        $this->assertSame(400, $c->create($this->post(['scope_type' => 'device', 'scope_id' => 'pi-1',
            'minutes' => 60 * 24, 'reason' => '정비']))->status());
        $this->assertSame(201, $c->create($this->post(['scope_type' => 'device', 'scope_id' => 'pi-1',
            'minutes' => 60 * 4, 'reason' => '프레스 금형 교체']))->status());
    }

    public function testViewerCannotSuppress(): void
    {
        $this->assertSame(403, $this->suppression('viewer')->create($this->post(
            ['scope_type' => 'device', 'scope_id' => 'pi-1', 'minutes' => 30, 'reason' => '정비']))->status());
    }

    public function testUnknownScopeTargetIsRejected(): void
    {
        $res = $this->suppression()->create($this->post(
            ['scope_type' => 'device', 'scope_id' => 'pi-nope', 'minutes' => 30, 'reason' => '정비']));
        $this->assertSame(400, $res->status());
    }

    public function testRevokeIsScoped(): void
    {
        $repo = new InMemorySuppressionRepository();
        $id = $repo->create(['scope_type' => 'device', 'scope_id' => 'pi-1', 'site' => 'factory-a',
            'reason' => 'x', 'starts_at' => time() - 10, 'ends_at' => time() + 600,
            'created_by' => 'a', 'created_at' => time()]);
        $c = $this->suppression('operator', 'factory-b', $repo);
        $this->assertSame(404, $c->revoke($this->post([]), ['id' => $id])->status());
    }

    // ================================================================ compliance

    private function compliance(string $role, ?string $site, InMemoryEventRepository $events,
                                ?InMemoryRiskControlRepository $risks = null,
                                ?InMemoryHandoverRepository $handovers = null): ComplianceController
    {
        return new ComplianceController(
            $events, new InMemorySnapshotRepository(), new InMemoryActionRepository(),
            new InMemoryAlertRepository(), $risks ?? new InMemoryRiskControlRepository(),
            $handovers ?? new InMemoryHandoverRepository(), new InMemoryAuditRepository(),
            $this->sess($role, $site)
        );
    }

    public function testIncidentPackageCarriesTheSurroundingTimeline(): void
    {
        $events = new InMemoryEventRepository();
        $at = (float)time();
        $before = $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-1', 'event_type' => 'near_fall',
            'severity' => 'warning', 'occurred_at' => $at - 300, 'metrics' => []]);
        $main = $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-1', 'event_type' => 'fall',
            'severity' => 'critical', 'occurred_at' => $at, 'metrics' => []]);
        $after = $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-1', 'event_type' => 'no_motion',
            'severity' => 'critical', 'occurred_at' => $at + 30, 'metrics' => []]);
        // 다른 카메라의 동시 사건은 들어오면 안 된다.
        $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-2', 'event_type' => 'fall',
            'severity' => 'critical', 'occurred_at' => $at, 'metrics' => []]);

        $res = $this->compliance('operator', null, $events)->package($this->get(), ['id' => $main]);
        $this->assertSame(200, $res->status());
        $data = json_decode($res->body(), true);
        $ids = array_column($data['timeline'], 'event_id');
        $this->assertSame([$before, $main, $after], $ids, '같은 카메라의 전후 맥락만, 시간순으로');
    }

    public function testPackageHidesAnotherSitesIncidentAs404(): void
    {
        $events = new InMemoryEventRepository();
        $id = $events->insert(['device_id' => 'pi-1', 'site' => 'factory-a', 'camera_id' => 'cam-1',
            'event_type' => 'fall', 'severity' => 'critical', 'occurred_at' => (float)time(), 'metrics' => []]);
        $res = $this->compliance('operator', 'factory-b', $events)->package($this->get(), ['id' => $id]);
        $this->assertSame(404, $res->status());
    }

    public function testRiskControlNeedsComplianceRole(): void
    {
        $events = new InMemoryEventRepository();
        $body = $this->post(['event_type' => 'fall', 'hazard' => '단차 전도', 'control' => '매트 설치',
                             'severity_rating' => 5, 'likelihood_rating' => 3]);
        $this->assertSame(403, $this->compliance('operator', null, $events)->saveRisk($body)->status());
        $this->assertSame(200, $this->compliance('admin', null, $events)->saveRisk($body)->status());
    }

    public function testRiskRatingIsBounded(): void
    {
        $events = new InMemoryEventRepository();
        $res = $this->compliance('admin', null, $events)->saveRisk($this->post(
            ['event_type' => 'fall', 'hazard' => 'h', 'control' => 'c',
             'severity_rating' => 9, 'likelihood_rating' => 3]));
        $this->assertSame(400, $res->status());
    }

    public function testHandoverCountsAreComputedServerSideNotTakenFromTheRequest(): void
    {
        $events = new InMemoryEventRepository();
        $now = (float)time();
        $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-1', 'event_type' => 'fall',
            'severity' => 'critical', 'occurred_at' => $now - 60, 'metrics' => []]);
        $events->insert(['device_id' => 'pi-1', 'camera_id' => 'cam-1', 'event_type' => 'zone_warning',
            'severity' => 'warning', 'occurred_at' => $now - 30, 'metrics' => []]);
        $handovers = new InMemoryHandoverRepository();

        $c = $this->compliance('operator', null, $events, null, $handovers);
        // 브라우저가 0 을 주장해도 서버가 다시 센다.
        $res = $c->acceptHandover($this->post(['note' => '인수', 'unacked_count' => 0, 'severe_count' => 0]));
        $this->assertSame(201, $res->status());
        $row = $handovers->recent(null, 1)[0];
        $this->assertSame(2, $row['unacked_count']);
        $this->assertSame(1, $row['severe_count']);
        $this->assertSame('관리자', $row['to_user']);
    }
}