<?php

use App\Models\User;
use Livewire\Livewire;
use Modules\Booking\Enums\BookingStatus;
use Modules\Booking\Models\Booking;
use Modules\Payment\Contracts\PaymentGatewayInterface;
use Modules\Payment\Data\PaymentRequestData;
use Modules\Payment\Data\PaymentResultData;
use Modules\Payment\Data\RefundResultData;
use Modules\Payment\Enums\PaymentMethod;
use Modules\Payment\Enums\RefundStatus;
use Modules\Payment\Factories\PaymentGatewayFactory;
use Modules\Payment\Filament\Resources\Refunds\Pages\ListRefunds;
use Modules\Payment\Models\Payment;
use Modules\Payment\Models\Refund;
use Spatie\Permission\Models\Permission;

/**
 * Never calls the real KBZ refund API in tests.
 */
class FakeFilamentRefundGateway implements PaymentGatewayInterface
{
    public function initiate(PaymentRequestData $data): PaymentResultData
    {
        throw new RuntimeException('not needed for this test');
    }

    public function verify(string $gatewayTransactionId): PaymentResultData
    {
        throw new RuntimeException('not needed for this test');
    }

    public function refund(string $gatewayTransactionId, string $amount, string $reason): RefundResultData
    {
        return new RefundResultData(status: RefundStatus::Completed, gatewayRefundId: 'REFUND123', gatewayPayload: []);
    }

    public function handleWebhook(array $payload): PaymentResultData
    {
        throw new RuntimeException('not needed for this test');
    }
}

beforeEach(function () {
    foreach (['view_payments', 'process_refunds'] as $permission) {
        Permission::findOrCreate($permission, 'web');
    }

    app(PaymentGatewayFactory::class)->register(PaymentMethod::KbzMiniApp, FakeFilamentRefundGateway::class);
});

test('a user with view_payments can list refunds', function () {
    $viewer = User::factory()->create()->givePermissionTo('view_payments');
    $this->actingAs($viewer);

    $refunds = Refund::factory()->count(3)->create();

    Livewire::test(ListRefunds::class)
        ->assertOk()
        ->assertCanSeeTableRecords($refunds);
});

test('the process action is hidden from a user without process_refunds', function () {
    $viewer = User::factory()->create()->givePermissionTo('view_payments');
    $this->actingAs($viewer);

    Livewire::test(ListRefunds::class)
        ->assertActionHidden('process');
});

test('the process action is visible to a user with process_refunds', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    Livewire::test(ListRefunds::class)
        ->assertActionVisible('process');
});

test('processing a partial refund via the action calls RefundBookingAction and cancels the booking', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed, 'price' => 15000]);
    $payment = Payment::factory()->completed()->create([
        'booking_id' => $booking->id,
        'gateway' => PaymentMethod::KbzMiniApp,
        'amount' => 15000,
        'gateway_transaction_id' => 'EVB-FILAMENT-REFUND-1',
    ]);

    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $payment->id,
            'full_refund' => false,
            'amount' => 5000,
            'reason' => 'customer requested cancellation',
        ])
        ->assertNotified();

    expect($booking->refresh()->status)->toBe(BookingStatus::Cancelled)
        ->and(Refund::where('payment_id', $payment->id)->where('status', RefundStatus::Completed)->where('amount', 5000)->exists())->toBeTrue();
});

test('the full refund toggle refunds the payment\'s whole refundable balance without an amount input', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed, 'price' => 15000]);
    $payment = Payment::factory()->completed()->create([
        'booking_id' => $booking->id,
        'gateway' => PaymentMethod::KbzMiniApp,
        'amount' => 15000,
        'gateway_transaction_id' => 'EVB-FILAMENT-FULL-1',
    ]);

    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $payment->id,
            'full_refund' => true,
            'reason' => 'customer requested cancellation',
        ])
        ->assertNotified();

    expect(Refund::where('payment_id', $payment->id)->where('status', RefundStatus::Completed)->where('amount', 15000)->exists())->toBeTrue();
});

test('the full refund toggle defaults to on', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    Livewire::test(ListRefunds::class)
        ->mountAction('process')
        ->assertActionDataSet(['full_refund' => true]);
});

test('turning the full refund toggle off requires an amount', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $payment = Payment::factory()->completed()->create([
        'gateway' => PaymentMethod::KbzMiniApp,
        'amount' => 15000,
    ]);

    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $payment->id,
            'full_refund' => false,
            'reason' => 'reason',
        ])
        ->assertHasFormErrors(['amount' => 'required']);
});

test('a non-completed payment is not offered in the process action\'s payment select', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $booking = Booking::factory()->create(['status' => BookingStatus::PendingPayment]);
    $pendingPayment = Payment::factory()->create([
        'booking_id' => $booking->id,
        'gateway' => PaymentMethod::KbzMiniApp,
    ]);

    // The Select itself rejects a value outside its "Completed only"
    // options (domain.md §6) — RefundBookingAction's own guard against a
    // non-confirmed booking is covered directly in RefundBookingActionTest.
    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $pendingPayment->id,
            'amount' => 1000,
            'reason' => 'reason',
        ])
        ->assertHasFormErrors(['payment_id']);

    expect(Refund::where('payment_id', $pendingPayment->id)->exists())->toBeFalse();
});

test('a payment whose booking has been soft-deleted is not offered in the process action\'s payment select', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $booking = Booking::factory()->create(['status' => BookingStatus::Cancelled, 'price' => 15000]);
    $payment = Payment::factory()->completed()->create([
        'booking_id' => $booking->id,
        'gateway' => PaymentMethod::KbzMiniApp,
        'amount' => 15000,
        'gateway_transaction_id' => 'EVB-FILAMENT-DELETED-1',
    ]);
    $booking->delete();

    // Regression: a payment whose booking is gone must never crash the
    // refund action (RefundBookingAction requires a non-null Booking) — it
    // simply isn't offered as an option at all.
    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $payment->id,
            'amount' => 1000,
            'reason' => 'reason',
        ])
        ->assertHasFormErrors(['payment_id']);

    expect(Refund::where('payment_id', $payment->id)->exists())->toBeFalse();
});

test('the process action\'s amount field is capped at the selected payment\'s refundable balance', function () {
    $admin = User::factory()->create()->givePermissionTo(['view_payments', 'process_refunds']);
    $this->actingAs($admin);

    $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed, 'price' => 15000]);
    $payment = Payment::factory()->completed()->create([
        'booking_id' => $booking->id,
        'gateway' => PaymentMethod::KbzMiniApp,
        'amount' => 15000,
        'gateway_transaction_id' => 'EVB-FILAMENT-MAX-1',
    ]);

    Livewire::test(ListRefunds::class)
        ->callAction('process', data: [
            'payment_id' => $payment->id,
            'full_refund' => false,
            'amount' => 15000.01,
            'reason' => 'reason',
        ])
        ->assertHasFormErrors(['amount' => 'max']);

    expect(Refund::where('payment_id', $payment->id)->exists())->toBeFalse();
});
