<?php

declare(strict_types=1);

namespace Tests\Feature\Api\Service;

use App\Enums\Invoice\InvoiceStatus;
use App\Enums\Order\OrderStatus;
use App\Models\Customer;
use App\Models\Invoice;
use App\Models\Order;
use App\Models\OrderItem;
use App\Models\Product;
use App\Models\ProductPricings;
use App\Models\Service;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class RenewServiceTest extends TestCase
{
    use RefreshDatabase;

    private Customer $customer;
    private Product $product;

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

        $this->customer = Customer::factory()->create();
        $this->product = Product::factory()->create([
            'product_type' => 'hosting',
            'is_active'    => true,
        ]);
    }

    private function actingAsCustomer(): static
    {
        return $this->actingAs($this->customer, 'client')
            ->withHeaders(['x-access-token' => $this->buildClientAccessToken()]);
    }

    /** Encrypts the shared secret the same way ClientAccessTokenCheck expects, for test requests. */
    private function buildClientAccessToken(): string
    {
        $key = hex2bin((string) config('services.client_api.key'));
        $secret = (string) config('services.client_api.secret');
        $iv = random_bytes(16);
        $ciphertext = openssl_encrypt($secret, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);

        return base64_encode($iv . $ciphertext);
    }

    private function createServiceWithOldPrice(int $oldPrice): Service
    {
        $order = Order::create([
            'order_num'   => 'ORD-' . uniqid(),
            'customer_id' => $this->customer->id,
            'sub_total'   => $oldPrice,
            'total'       => $oldPrice,
            'status'      => OrderStatus::ACTIVE->value,
        ]);

        $orderItem = OrderItem::create([
            'order_id'      => $order->id,
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'months'        => 1,
            'quantity'      => 1,
            'price'         => $oldPrice,
        ]);

        return Service::create([
            'customer_id'   => $this->customer->id,
            'product_id'    => $this->product->id,
            'order_item_id' => $orderItem->id,
            'status'        => 'active',
            'server_name'   => 'test-server',
        ]);
    }

    public function test_renew_uses_current_catalog_price_not_the_original_order_price(): void
    {
        $service = $this->createServiceWithOldPrice(90_000);

        // Giá sản phẩm hiện tại đã tăng lên 100.000 kể từ lúc khách đặt mua.
        ProductPricings::create([
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'price'         => 100_000,
            'is_active'     => true,
        ]);

        $response = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 2],
        );

        $response->assertOk();
        $response->assertJsonPath('data.total', 200_000);

        $this->assertDatabaseHas('invoices', [
            'id'    => $response->json('data.invoice_id'),
            'total' => 200_000,
        ]);
    }

    public function test_renew_fails_when_product_pricing_is_no_longer_active(): void
    {
        $service = $this->createServiceWithOldPrice(90_000);

        ProductPricings::create([
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'price'         => 100_000,
            'is_active'     => false,
        ]);

        $response = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );

        $response->assertStatus(400);
        $this->assertSame(0, Invoice::where('customer_id', $this->customer->id)->count());
    }

    public function test_renew_reuses_original_order_instead_of_creating_a_new_one(): void
    {
        $service = $this->createServiceWithOldPrice(90_000);
        $originalOrderId = $service->orderItem->order_id;

        ProductPricings::create([
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'price'         => 100_000,
            'is_active'     => true,
        ]);

        $response = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );

        $response->assertOk();
        $response->assertJsonPath('data.order_id', $originalOrderId);

        // Order 1:N Invoice — no second Order row is ever created for a renewal.
        $this->assertSame(1, Order::where('customer_id', $this->customer->id)->count());
        $this->assertDatabaseHas('invoices', [
            'id' => $response->json('data.invoice_id'),
            'order_id' => $originalOrderId,
            'invoice_type' => 2,
        ]);
    }

    public function test_renewal_invoice_has_a_billing_period_and_is_not_duplicated_for_the_same_period(): void
    {
        $service = $this->createServiceWithOldPrice(90_000);

        ProductPricings::create([
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'price'         => 100_000,
            'is_active'     => true,
        ]);

        $response = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );
        $response->assertOk();

        $invoiceId = $response->json('data.invoice_id');
        $this->assertDatabaseHas('invoices', ['id' => $invoiceId]);
        $invoice = Invoice::find($invoiceId);
        $this->assertNotNull($invoice->billing_period_start);
        $this->assertNotNull($invoice->billing_period_end);

        // Calling renew again while the invoice is still open must return the SAME
        // invoice, not create a duplicate for the same billing period.
        $second = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );
        $second->assertOk();
        $second->assertJsonPath('data.invoice_id', $invoiceId);
        $this->assertSame(1, Invoice::where('customer_id', $this->customer->id)->where('invoice_type', 2)->count());
    }

    /**
     * Đúng flow đề bài mục 6: invoice gia hạn quá due_date -> OVERDUE, KHÔNG tạo invoice mới.
     * Verify khách bấm "Gia hạn" lại LÚC invoice đang OVERDUE (chưa qua billing cycle tiếp theo)
     * vẫn nhận về đúng invoice cũ, không bị tạo trùng.
     */
    public function test_renew_while_existing_invoice_is_overdue_returns_the_same_invoice(): void
    {
        $service = $this->createServiceWithOldPrice(90_000);

        ProductPricings::create([
            'product_id'    => $this->product->id,
            'billing_cycle' => 'monthly',
            'price'         => 100_000,
            'is_active'     => true,
        ]);

        $first = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );
        $first->assertOk();
        $invoiceId = $first->json('data.invoice_id');

        // Invoice quá due_date -> cron invoices:check-overdue chuyển sang OVERDUE (flow thật).
        Invoice::whereKey($invoiceId)->update(['due_date' => now()->subDay()->toDateString()]);
        $this->artisan('invoices:check-overdue')->assertExitCode(0);
        $this->assertSame(InvoiceStatus::OVERDUE->value, (int) Invoice::find($invoiceId)->status);

        // Khách bấm "Gia hạn" lại trong khi invoice đang OVERDUE — không được tạo invoice #2.
        $second = $this->actingAsCustomer()->postJson(
            "/v1/client/dich-vu/{$service->id}/renew",
            ['months' => 1],
        );
        $second->assertOk();
        $second->assertJsonPath('data.invoice_id', $invoiceId);
        $this->assertSame(1, Invoice::where('customer_id', $this->customer->id)->where('invoice_type', 2)->count());
    }
}