<?php

namespace Webkul\Shop\Http\Controllers\API;

use Carbon\Carbon;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Longyi\RewardPoints\Helpers\ApiResponse;
use Webkul\Sales\Models\Order;
use Webkul\Sales\Repositories\OrderRepository;

class OrderController extends APIController
{
    /**
     * Create a new controller instance.
     */
    public function __construct(protected OrderRepository $orderRepository) {}

    /**
     * 获取当前客户订单列表（分页）
     *
     * @param  Request  $request
     * @return JsonResponse
     */
    public function index(Request $request): JsonResponse
    {
        $customer = auth()->guard('customer')->user();
        if (! $customer) {
            return ApiResponse::unauthorized();
        }

        $page  = (int) $request->input('page', 1);
        $limit = (int) $request->input('limit', 10);
        $limit = min(max($limit, 1), 100);

        $status = $request->input('status');

        $query = Order::query()
            ->where('customer_id', $customer->id)
            ->orderBy('created_at', 'desc');

        if ($status) {
            $query->where('status', $status);
        }

        $paginator = $query->paginate($limit, ['*'], 'page', $page);

        $orders = $paginator->through(function ($order) {
            return $this->formatOrderListItem($order);
        });

        return ApiResponse::paginated($orders->values(), $paginator);
    }

    /**
     * 获取订单详情
     *
     * @param  int  $id
     * @return JsonResponse
     */
    public function show(int $id): JsonResponse
    {
        $customer = auth()->guard('customer')->user();
        if (! $customer) {
            return ApiResponse::unauthorized();
        }

        $order = Order::query()
            ->with([
                'items' => function ($q) {
                    $q->whereNull('parent_id');
                },
                'items.child',
                'items.additional',
                'billing_address',
                'shipping_address',
                'payment',
                'invoices',
                'invoices.items',
                'shipments',
                'shipments.items',
                'refunds',
                'comments',
            ])
            ->where('customer_id', $customer->id)
            ->where('id', $id)
            ->first();

        if (! $order) {
            return ApiResponse::notFound('Order not found');
        }

        return ApiResponse::success($this->formatOrderDetail($order));
    }

    /**
     * 格式化订单列表项
     */
    protected function formatOrderListItem(Order $order): array
    {
        return [
            'id'                  => $order->id,
            'increment_id'        => $order->increment_id,
            'status'              => $order->status,
            'status_label'        => $this->getStatusLabel($order->status),
            'grand_total'         => (float) $order->grand_total,
            'order_currency_code' => $order->order_currency_code,
            'item_count'          => $order->items->sum('qty_ordered'),
            'items'               => $order->items->map(fn ($item) => [
                'id'          => $item->id,
                'name'        => $item->name,
                'sku'         => $item->sku,
                'qty_ordered' => $item->qty_ordered,
                'price'       => (float) $item->price,
                'total'       => (float) $item->total,
                'product_id'  => $item->product_id,
            ])->values(),
            'created_at'          => $order->created_at ? Carbon::parse($order->created_at)->toDateTimeString() : null,
            'can_cancel'          => $order->canCancel(),
            'can_reorder'         => $order->canReorder(),
        ];
    }

    /**
     * 格式化订单详情
     */
    protected function formatOrderDetail(Order $order): array
    {
        return [
            'id'                  => $order->id,
            'increment_id'        => $order->increment_id,
            'status'              => $order->status,
            'status_label'        => $this->getStatusLabel($order->status),
            'customer_email'      => $order->customer_email,
            'customer_first_name' => $order->customer_first_name,
            'customer_last_name'  => $order->customer_last_name,
            'channel_name'        => $order->channel_name,
            'order_currency_code' => $order->order_currency_code,

            'sub_total'        => (float) $order->sub_total,
            'shipping_amount'  => (float) $order->shipping_amount,
            'tax_amount'       => (float) ($order->tax_amount ?? 0),
            'discount_amount'  => (float) ($order->discount_amount ?? 0),
            'grand_total'      => (float) $order->grand_total,
            'total_qty_ordered'=> $order->total_qty_ordered,

            'shipping_method'  => $order->shipping_method,
            'shipping_title'   => $order->shipping_title,

            'billing_address'  => $this->formatAddress($order->billing_address),
            'shipping_address' => $this->formatAddress($order->shipping_address),

            'payment'          => $order->payment ? [
                'method'       => $order->payment->method,
                'method_title' => $order->payment->method_title,
            ] : null,

            'items'            => $order->items->map(fn ($item) => [
                'id'           => $item->id,
                'name'         => $item->name,
                'sku'          => $item->sku,
                'type'         => $item->type,
                'qty_ordered'  => $item->qty_ordered,
                'qty_shipped'  => (int) ($item->qty_shipped ?? 0),
                'qty_invoiced' => (int) ($item->qty_invoiced ?? 0),
                'qty_canceled' => (int) ($item->qty_canceled ?? 0),
                'qty_refunded' => (int) ($item->qty_refunded ?? 0),
                'price'        => (float) $item->price,
                'total'        => (float) $item->total,
                'weight'       => (float) ($item->weight ?? 0),
                'product_id'   => $item->product_id,
                'additional'   => $item->additional ? $item->additional->toArray() : null,
            ])->values(),

            'invoices'         => $order->invoices->map(fn ($invoice) => [
                'id'           => $invoice->id,
                'increment_id' => $invoice->increment_id ?? ('#' . $invoice->id),
                'state'        => $invoice->state,
                'email_sent'   => $invoice->email_sent,
                'total_qty'    => $invoice->total_qty,
                'sub_total'    => (float) $invoice->sub_total,
                'grand_total'  => (float) $invoice->grand_total,
                'created_at'   => $invoice->created_at ? Carbon::parse($invoice->created_at)->toDateTimeString() : null,
                'items'        => $invoice->items->map(fn ($invItem) => [
                    'name'  => $invItem->name,
                    'qty'   => $invItem->qty,
                    'price' => (float) $invItem->price,
                    'total' => (float) $invItem->total,
                ])->values(),
            ])->values(),

            'shipments'        => $order->shipments->map(fn ($shipment) => [
                'id'           => $shipment->id,
                'increment_id' => $shipment->increment_id ?? ('#' . $shipment->id),
                'status'       => $shipment->status,
                'total_qty'    => $shipment->total_qty,
                'total_weight' => (float) $shipment->total_weight,
                'carrier_code' => $shipment->carrier_code,
                'carrier_title'=> $shipment->carrier_title,
                'track_number' => $shipment->track_number,
                'created_at'   => $shipment->created_at ? Carbon::parse($shipment->created_at)->toDateTimeString() : null,
                'items'        => $shipment->items->map(fn ($shipItem) => [
                    'name'     => $shipItem->name,
                    'qty'      => $shipItem->qty,
                ])->values(),
            ])->values(),

            'refunds'          => $order->refunds->map(fn ($refund) => [
                'id'           => $refund->id,
                'increment_id' => $refund->increment_id ?? ('#' . $refund->id),
                'state'        => $refund->state,
                'total_qty'    => $refund->total_qty,
                'grand_total'  => (float) $refund->grand_total,
                'created_at'   => $refund->created_at ? Carbon::parse($refund->created_at)->toDateTimeString() : null,
            ])->values(),

            'comments'         => $order->comments->map(fn ($comment) => [
                'comment'           => $comment->comment,
                'customer_notified' => $comment->customer_notified,
                'created_at'        => $comment->created_at ? Carbon::parse($comment->created_at)->toDateTimeString() : null,
            ])->values(),

            'can_cancel'       => $order->canCancel(),
            'can_reorder'      => $order->canReorder(),

            'created_at'       => $order->created_at ? Carbon::parse($order->created_at)->toDateTimeString() : null,
            'updated_at'       => $order->updated_at ? Carbon::parse($order->updated_at)->toDateTimeString() : null,
        ];
    }

    /**
     * 格式化地址
     */
    protected function formatAddress($address): ?array
    {
        if (! $address) {
            return null;
        }

        return [
            'first_name' => $address->first_name,
            'last_name'  => $address->last_name,
            'email'      => $address->email,
            'phone'      => $address->phone,
            'address1'   => $address->address1,
            'address2'   => $address->address2,
            'city'       => $address->city,
            'state'      => $address->state,
            'country'    => $address->country,
            'postcode'   => $address->postcode,
            'company'    => $address->company_name,
        ];
    }

    /**
     * 获取状态中文标签
     */
    protected function getStatusLabel(string $status): string
    {
        return match ($status) {
            Order::STATUS_PENDING         => '待处理',
            Order::STATUS_PENDING_PAYMENT => '待付款',
            Order::STATUS_PROCESSING      => '处理中',
            Order::STATUS_COMPLETED       => '已完成',
            Order::STATUS_CANCELED        => '已取消',
            Order::STATUS_CLOSED          => '已关闭',
            Order::STATUS_FRAUD           => '欺诈',
            default                       => $status,
        };
    }
}