<?php

declare(strict_types=1);

namespace App\Services\Api\Order;

use App\DTOs\Order\ClientOrderFilters;
use App\Enums\Invoice\InvoiceStatus;
use App\Enums\Order\OrderStatus;
use App\Helpers\OrderHelper;
use App\Jobs\VirtualMachine\Action\VMJobs;
use App\Jobs\VirtualMachine\Provision\RetryProvisioningOrchestrator;
use App\Models\Invoice;
use App\Models\ModuleVmware;
use App\Models\Order;
use App\Models\OrderItem;
use App\Models\Service;
use App\Models\VirtualMachines;
use App\Repositories\Api\Order\OrderRepository;
use Carbon\Carbon;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\DB;

class OrderQueryService
{
    public function __construct(private readonly OrderRepository $orderRepository)
    {
    }

    public function getOrdersForCustomer(int $customerId, ClientOrderFilters $filters): LengthAwarePaginator
    {
        return $this->orderRepository->getOrders($customerId, $filters->toArray());
    }

    public function checkServerName(string $name): array
    {
        $exists = OrderItem::where('server_name', $name)->exists()
            || Service::where('server_name', $name)->exists()
            || ModuleVmware::where('name', $name)->exists()
            || ModuleVmware::where('hostname', $name)->exists()
            || VirtualMachines::where('name', $name)->exists();

        return [
            'available' => ! $exists,
            'message' => $exists
                ? 'Tên server này đã được sử dụng, vui lòng chọn tên khác.'
                : null,
        ];
    }

    public function findCustomerOrder(int $customerId, int $id): ?Order
    {
        return Order::query()
            ->with(['invoice', 'orderItems.product', 'orderItems.service', 'customer'])
            ->where('customer_id', $customerId)
            ->where('id', $id)
            ->first();
    }

    public function getCustomerInvoices(int $customerId)
    {
        return Invoice::query()
            ->with(['order.orderItems.product'])
            ->where('customer_id', $customerId)
            ->orderByDesc('created_at')
            ->get();
    }

    public function findCustomerInvoice(int $customerId, int $id): ?Invoice
    {
        return Invoice::query()
            ->with([
                'order.orderItems.product',
                'order.vmWare.ipAddress',
                'order.vmWare.os',
                'customer',
                'attachments',
            ])
            ->where('customer_id', $customerId)
            ->where('id', $id)
            ->first();
    }

    public function findCustomerInvoiceByNumber(int $customerId, string $invoiceNumber): ?Invoice
    {
        return Invoice::query()
            ->with([
                'order.orderItems.product',
                'order.vmWare.ipAddress',
                'order.vmWare.os',
                'customer',
                'attachments',
                'invoiceItems.product',
                'services.product',
            ])
            ->where('customer_id', $customerId)
            ->where('invoice_number', $invoiceNumber)
            ->first();
    }

    public function findCustomerInvoiceByOrderNum(int $customerId, string $orderNumber): ?Order
    {
        return Order::query()
            ->with([
                'invoice.invoiceItems',
                'invoice.attachments',
                'invoice.customer',
                'orderItems.product',
                'customer',
                'vmWare.ipAddress',
                'vmWare.os',
            ])
            ->where('customer_id', $customerId)
            ->where('order_num', $orderNumber)
            ->first();
    }

    public function getCustomerServices(int $customerId)
    {
        return Service::query()
            ->with(['product', 'addons', 'invoice', 'orderItem', 'vmware.ipAddress', 'vmware.os'])
            ->where('customer_id', $customerId)
            ->orderByDesc('created_at')
            ->get();
    }

    public function findCustomerService(int $customerId, string $uuid): ?Service
    {
        return Service::query()
            ->with(['product', 'addons', 'invoice', 'orderItem', 'vmware.ipAddress', 'vmware.os', 'vmware.vCenter'])
            ->where('uuid', $uuid)
            ->where('customer_id', $customerId)
            ->first();
    }

    public function canRetryProvisioning(Service $service): bool
    {
        if ($service->status !== 'pending' || $service->retry_requested_at) {
            return false;
        }

        $paidAt = $service->invoice?->paid_at;

        return $paidAt ? Carbon::parse($paidAt)->diffInMinutes(now()) >= 180 : false;
    }

    public function retryProvisioning(Order $order, int $customerId): array
    {
        $order = Order::where('id', $order->id)
            ->with(['invoice', 'orderItems.service'])
            ->where('customer_id', $customerId)
            ->first();

        if (! $order) {
            return ['ok' => false, 'message' => 'Đơn hàng không tồn tại.', 'code' => 404];
        }

        if (! $order->invoice || (int) $order->invoice->status !== InvoiceStatus::PAID->value) {
            return ['ok' => false, 'message' => 'Đơn hàng chưa được thanh toán.', 'code' => 400];
        }

        $paidAt = $order->invoice->paid_at ? Carbon::parse($order->invoice->paid_at) : null;
        if (! $paidAt || $paidAt->diffInMinutes(now()) < 180) {
            return ['ok' => false, 'message' => 'Vui lòng chờ khoảng 3 tiếng sau khi thanh toán mới có thể khởi tạo lại dịch vụ.', 'code' => 400];
        }

        $service = $order->orderItems->first()?->service;
        if (! $service || (int) $service->customer_id !== $customerId) {
            return ['ok' => false, 'message' => 'Không tìm thấy dịch vụ hợp lệ để khởi tạo lại.', 'code' => 400];
        }

        if ($service->status !== 'pending') {
            return ['ok' => false, 'message' => 'Dịch vụ đã được khởi tạo hoặc không ở trạng thái chờ.', 'code' => 400];
        }

        if ($service->retry_requested_at) {
            return ['ok' => false, 'message' => 'Dịch vụ đã được yêu cầu khởi tạo lại một lần. Vui lòng liên hệ kỹ thuật qua mailto:kythuat@tgs.com.vn', 'code' => 400];
        }

        $service->update(['retry_requested_at' => now()]);
        RetryProvisioningOrchestrator::dispatch($order->id, $customerId);

        return ['ok' => true, 'message' => 'Đã yêu cầu khởi tạo lại dịch vụ. Hệ thống sẽ kiểm tra và xử lý trong vài phút.'];
    }

    public function renewService(int $serviceId, int $customerId, int $months): array
    {
        $service = Service::query()
            ->with(['orderItem.product', 'invoice'])
            ->where('id', $serviceId)
            ->where('customer_id', $customerId)
            ->whereNotIn('status', ['terminated', 'cancelled'])
            ->first();

        if (! $service) {
            return ['ok' => false, 'message' => 'Không tìm thấy dịch vụ hoặc dịch vụ đã bị hủy.', 'code' => 404];
        }

        $orderItem = $service->orderItem;
        if (! $orderItem || (int) $orderItem->price <= 0) {
            return ['ok' => false, 'message' => 'Không thể xác định giá gia hạn dịch vụ.', 'code' => 400];
        }

        $price = (int) $orderItem->price * $months;

        if ($service->invoice_id && Invoice::where('id', $service->invoice_id)
            ->where('invoice_type', 2)
            ->whereIn('status', [InvoiceStatus::UNPAID->value, InvoiceStatus::OVERDUE->value])
            ->exists()) {
            $invoice = Invoice::find($service->invoice_id);

            return [
                'ok' => true,
                'message' => 'Dịch vụ đã có hóa đơn gia hạn đang chờ thanh toán.',
                'data' => [
                    'order_id' => $invoice?->order_id,
                    'invoice_id' => $invoice?->id,
                    'invoice_number' => $invoice?->invoice_number,
                    'total' => (float) ($invoice?->total ?? 0),
                    'status' => $invoice?->status,
                    'payment_url' => url('/client/invoices/' . $invoice?->invoice_number . '/payment'),
                ],
            ];
        }

        $invoice = DB::transaction(function () use ($service, $orderItem, $price, $months) {
            $order = Order::create([
                'order_num' => OrderHelper::generateOrderNumber(),
                'customer_id' => $service->customer_id,
                'sub_total' => $price,
                'discount_amount' => 0,
                'total' => $price,
                'status' => OrderStatus::PENDING->value,
                'client_ip' => request()?->ip(),
                'note' => 'Đơn hàng gia hạn dịch vụ #' . $service->id,
            ]);

            OrderItem::create([
                'order_id' => $order->id,
                'product_id' => $service->product_id,
                'billing_cycle' => $orderItem->billing_cycle,
                'months' => $months,
                'os_id' => $orderItem->os_id,
                'quantity' => 1,
                'server_name' => $service->server_name,
                'price' => $price,
            ]);

            $invoice = Invoice::create([
                'invoice_number' => OrderHelper::generateOrderNumber('INV'),
                'customer_id' => $service->customer_id,
                'order_id' => $order->id,
                'invoice_type' => 2,
                'sub_total' => $price,
                'discount_amount' => 0,
                'tax' => 0,
                'total' => $price,
                'status' => InvoiceStatus::UNPAID->value,
                'due_date' => now()->addDays(7)->toDateString(),
            ]);

            \App\Models\InvoiceItem::create([
                'invoice_id' => $invoice->id,
                'product_id' => $service->product_id,
                'type' => 'renewal',
                'description' => 'Gia hạn dịch vụ: ' . ($orderItem->product?->name ?? $service->server_name ?? ''),
                'months' => $months,
                'quantity' => 1,
                'unit_price' => $price,
                'total_price' => $price,
            ]);

            $service->update(['invoice_id' => $invoice->id]);

            return $invoice;
        });

        return [
            'ok' => true,
            'message' => 'Đã tạo hóa đơn gia hạn. Vui lòng thanh toán để gia hạn dịch vụ.',
            'data' => [
                'order_id' => $invoice->order_id,
                'invoice_id' => $invoice->id,
                'invoice_number' => $invoice->invoice_number,
                'total' => (float) $invoice->total,
                'status' => $invoice->status,
                'payment_url' => url('/client/invoices/' . $invoice->invoice_number . '/payment'),
            ],
        ];
    }
}