<?php

namespace App\Tests\Billing;

use App\Auth\Entity\User;
use App\Billing\Entity\Invoice;
use App\Doctor\Entity\Doctor;
use App\Patient\Entity\PatientRecord;
use App\Patient\Entity\PatientSession;
use App\Patient\Entity\SessionPayment;
use App\Tests\ApiTestCase;

/**
 * GET /api/v1/my/billing/payments/summary — aggregate totals over the same
 * filtered set as the payments list, feeding the admin page's stat cards.
 */
class PaymentsSummaryTest extends ApiTestCase
{
    /** @return array{0: User, 1: Doctor} owner user + their doctor profile */
    private function doctor(): array
    {
        $owner  = $this->createUser(['ROLE_DOCTOR']);
        $doctor = new Doctor($owner, 'دکتر تست');
        $this->em->persist($doctor);
        $this->em->flush();

        return [$owner, $doctor];
    }

    private function patientRecord(Doctor $doctor, ?string $nationalCode = null): PatientRecord
    {
        $patient = $this->createUser(['ROLE_USER']);
        if ($nationalCode !== null) {
            $patient->setNationalCode($nationalCode);
        }
        $record = new PatientRecord('doctor', $doctor->getId(), $patient, 'doctor', $doctor->getId());
        $this->em->persist($record);
        $this->em->flush();

        return $record;
    }

    private function setField(object $obj, string $prop, mixed $value): void
    {
        $ref = new \ReflectionProperty($obj, $prop);
        $ref->setAccessible(true);
        $ref->setValue($obj, $value);
    }

    /** مراجعه‌ای با یک پرداخت نقدی ثبت‌شده — منبع واقعیِ «چقدر وصول شده». */
    private function paidSession(PatientRecord $record, int $paidRials): PatientSession
    {
        $session = new PatientSession($record);
        $this->em->persist($session);
        $this->em->flush();

        $payment = new SessionPayment($session, 'cash', $paidRials, 1_700_000_000);
        $this->em->persist($payment);
        $this->em->flush();

        return $session;
    }

    /**
     * `totalRials` دو برابر سهم بیمار است تا دو خلاصه از هم قابل‌تفکیک بمانند.
     * `$paidRials` پرداخت واقعی روی مراجعه است؛ وضعیت پرداخت از همین مشتق می‌شود.
     */
    private function invoice(
        Doctor $doctor,
        PatientRecord $record,
        int $patientRials,
        string $status,
        int $issuedAt,
        int $paidRials = 0,
    ): Invoice {
        $invoice = new Invoice('doctor', $doctor->getId());
        $invoice->setPatientRecordId($record->getId());
        if ($paidRials > 0) {
            $invoice->setPatientSessionId($this->paidSession($record, $paidRials)->getId());
        }
        $this->setField($invoice, 'totalRials', $patientRials * 2);
        $this->setField($invoice, 'patientRials', $patientRials);
        $this->setField($invoice, 'status', $status);
        $this->setField($invoice, 'issuedAt', $issuedAt);
        $this->em->persist($invoice);
        $this->em->flush();

        return $invoice;
    }

    public function testSummarySplitsPaidAndUnsettled(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);

        $this->invoice($doctor, $record, 1_000_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 1_000_000);
        $this->invoice($doctor, $record, 400_000, Invoice::STATUS_FINALIZED, 1_700_000_100);
        // draft invoices are not part of the payments list, so they must not count
        $this->invoice($doctor, $record, 999_000, Invoice::STATUS_DRAFT, 1_700_000_200, 999_000);

        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary', $owner);
        self::assertSame(200, $this->responseCode());

        $data = $res['data'];
        self::assertSame(1_400_000, $data['total_rials']);
        self::assertSame(1_000_000, $data['paid_rials']);
        self::assertSame(400_000, $data['unsettled_rials']);
        self::assertSame(2, $data['invoices_count']);
    }

    /**
     * ⚠️ مرزی: فاکتورِ نیمه‌پرداخت. پیش از این، «پرداخت‌شده» فقط فاکتورهای کاملاً
     * تسویه‌شده را می‌شمرد، پس پولِ گرفته‌شده نامرئی می‌شد و بدهی بزرگ‌تر از واقعیت.
     */
    public function testPartiallyPaidInvoiceCountsItsCollectedAmount(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);

        // سهم بیمار ۱٬۰۰۰٬۰۰۰ و فقط ۴۰۰٬۰۰۰ وصول شده.
        $this->invoice($doctor, $record, 1_000_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 400_000);

        $data = $this->authJson('GET', '/api/v1/my/billing/payments/summary', $owner)['data'];

        self::assertSame(1_000_000, $data['total_rials']);
        self::assertSame(400_000, $data['paid_rials']);
        self::assertSame(600_000, $data['unsettled_rials']);
    }

    /** ⚠️ مرزی: اضافه‌پرداخت نباید «تسویه‌نشده» را منفی کند. */
    public function testOverpaymentIsCappedAtTheInvoiceShare(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);

        $this->invoice($doctor, $record, 500_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 900_000);

        $data = $this->authJson('GET', '/api/v1/my/billing/payments/summary', $owner)['data'];

        self::assertSame(500_000, $data['paid_rials']);
        self::assertSame(0, $data['unsettled_rials']);
    }

    public function testSummaryHonoursStatusAndDateFilters(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);

        $this->invoice($doctor, $record, 1_000_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 1_000_000);
        $this->invoice($doctor, $record, 400_000, Invoice::STATUS_FINALIZED, 1_700_000_000);
        $this->invoice($doctor, $record, 700_000, Invoice::STATUS_FINALIZED, 1_800_000_000, 700_000);

        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary?status=paid', $owner);
        self::assertSame(1_700_000, $res['data']['total_rials']);
        self::assertSame(1_700_000, $res['data']['paid_rials']);
        self::assertSame(0, $res['data']['unsettled_rials']);
        self::assertSame(2, $res['data']['invoices_count']);

        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary?from=1700000000&to=1700000001', $owner);
        self::assertSame(1_400_000, $res['data']['total_rials']);
        self::assertSame(2, $res['data']['invoices_count']);
    }

    public function testSummaryFiltersByNationalCode(): void
    {
        [$owner, $doctor] = $this->doctor();
        // db_test is never reset — a fixed code would eventually collide on the unique column
        $code  = (string) random_int(1_000_000_000, 9_999_999_999);
        $mine  = $this->patientRecord($doctor, $code);
        $other = $this->patientRecord($doctor, (string) random_int(1_000_000_000, 9_999_999_999));

        $this->invoice($doctor, $mine, 500_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 500_000);
        $this->invoice($doctor, $other, 800_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 800_000);

        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary?national_code=' . $code, $owner);
        self::assertSame(500_000, $res['data']['total_rials']);
        self::assertSame(1, $res['data']['invoices_count']);
    }

    public function testSummaryIsZeroWhenNothingMatches(): void
    {
        [$owner] = $this->doctor();

        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary', $owner);
        self::assertSame(200, $this->responseCode());
        self::assertSame(
            ['total_rials' => 0, 'paid_rials' => 0, 'unsettled_rials' => 0, 'invoices_count' => 0],
            $res['data'],
        );
    }

    public function testPatientInvoicesCarryTheirOwnSummary(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);

        $this->invoice($doctor, $record, 1_000_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 1_000_000);
        $this->invoice($doctor, $record, 500_000, Invoice::STATUS_FINALIZED, 1_700_000_100);
        $this->invoice($doctor, $record, 900_000, Invoice::STATUS_DRAFT, 1_700_000_200, 900_000);

        $res = $this->authJson('GET', '/api/v1/my/billing/patients/' . $record->getUuid() . '/invoices', $owner);
        self::assertSame(200, $this->responseCode());

        // ستون «مجموع» جمعِ کلِ صورتحساب است، ولی وصولی و بدهی روی سهم بیمار سنجیده
        // می‌شوند: فاکتور اول (سهم ۱٬۰۰۰٬۰۰۰) تسویه شده و فاکتور دوم (۵۰۰٬۰۰۰) نه.
        $summary = $res['data']['summary'];
        self::assertSame(3_000_000, $summary['total_rials']);
        self::assertSame(1_000_000, $summary['paid_rials']);
        self::assertSame(500_000, $summary['unsettled_rials']);
        self::assertSame(2, $summary['invoices_count']);
        self::assertSame(2, $res['data']['meta']['totalRecords']);
    }

    public function testSummaryExcludesOtherTenants(): void
    {
        [$owner, $doctor] = $this->doctor();
        $record = $this->patientRecord($doctor);
        $this->invoice($doctor, $record, 300_000, Invoice::STATUS_FINALIZED, 1_700_000_000, 300_000);

        [$otherOwner] = $this->doctor();
        $res = $this->authJson('GET', '/api/v1/my/billing/payments/summary', $otherOwner);
        self::assertSame(0, $res['data']['total_rials']);
        self::assertSame(0, $res['data']['invoices_count']);
    }
}