<?php

namespace App\Services;

use App\Enums\OrderRecordStatus;
use App\Enums\OrderStatus;
use App\Enums\TechnicianWorkStatus;
use App\Models\CoachLocation;
use App\Models\Order;
use App\Models\OrderExcRecord;
use App\Models\OrderGrabRecord;
use App\Models\OrderRecord;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Slowlyo\OwlAdmin\Services\AdminService;

/**
 * 订单
 *
 * @method Order getModel()
 * @method Order|\Illuminate\Database\Query\Builder query()
 */
class OrderService extends AdminService
{
    protected string $modelName = Order::class;

    /**
     * 更换订单技师
     *
     * @param  array  $data  包含 order_id, new_coach_id 和可选的 reason
     */
    public function changeOrderCoach(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否允许更换技师
            $allowedStates = [
                OrderStatus::PAID->value,
                OrderStatus::ACCEPTED->value,
                OrderStatus::DEPARTED->value,
                OrderStatus::ARRIVED->value,
            ];

            abort_if(! in_array($order->state, $allowedStates), 422, '当前订单状态不允许更换技师');

            // 记录原技师ID
            $oldCoachId = $order->coach_id;

            // 更新订单技师
            $order->coach_id = $data['new_coach_id'];
            $order->save();

            // 记录技师更换历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => $oldCoachId,
                'new_coach_id' => $data['new_coach_id'],
                'state' => OrderRecordStatus::CHANGE_COACH->value,
                'remark' => $data['reason'] ?? null,
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '更换技师成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('更换订单技师失败', [
                'order_id' => $data['order_id'],
                'new_coach_id' => $data['new_coach_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 指定抢单技师
     *
     * @param  array  $data  包含 order_id, coach_id 和可选的 remark
     */
    public function assignOrderCoach(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否为待抢单
            abort_if($order->state !== OrderStatus::CREATED->value, 422, '当前订单状态不允许指定技师');

            // 更新订单技师和状态
            $order->coach_id = $data['coach_id'];
            $order->state = OrderStatus::ASSIGNED->value;
            $order->save();

            // 记录指定技师历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => null,
                'new_coach_id' => $data['coach_id'],
                'state' => OrderRecordStatus::ASSIGNED->value,
                'remark' => $data['remark'] ?? '平台指派',
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '指定技师成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('指定抢单技师失败', [
                'order_id' => $data['order_id'],
                'coach_id' => $data['coach_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 获取订单抢单技师列表
     *
     * @param  int  $orderId  订单ID
     */
    public function getOrderGrabList(int $orderId): array
    {
        try {
            // 获取订单信息
            $order = Order::findOrFail($orderId);

            // 获取抢单记录
            $grabRecords = OrderGrabRecord::with(['coach', 'coach.info'])
                ->where('order_id', $orderId)
                ->orderBy('created_at', 'desc')
                ->get();

            $data = $grabRecords->map(function ($record) {
                return [
                    'id' => $record->id,
                    'coach_id' => $record->coach_id,
                    'nickname' => $record->coach->info->nickname ?? '',
                    'avatar' => $record->coach->info->avatar ?? '',
                    'distance' => $record->distance,
                    'state' => $record->state,
                    'created_at' => $record->created_at->format('Y-m-d H:i:s'),
                ];
            });

            return [
                'code' => 200,
                'message' => '获取成功',
                'data' => $data,
            ];

        } catch (\Exception $e) {
            Log::error('获取订单抢单技师列表失败', [
                'order_id' => $orderId,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 获取附近技师列表
     *
     * @param  int  $orderId  订单ID
     * @param  int  $distance  搜索范围(米)
     */
    public function getNearbyCoaches(int $orderId, int $distance = 5000): array
    {
        try {
            // 获取订单信息
            $order = Order::findOrFail($orderId);

            // 获取附近技师
            // TODO: 优化查询
            $nearbyCoaches = CoachLocation::with(['coach', 'coach.info', 'coach.score'])
                ->selectRaw('*, ST_Distance_Sphere(
                    point(longitude, latitude),
                    point(?, ?)
                ) as distance', [$order->longitude, $order->latitude])
                ->having('distance', '<=', $distance)
                ->orderBy('distance')
                ->get();

            $data = $nearbyCoaches->map(function ($location) {
                return [
                    'id' => $location->coach->id,
                    'nickname' => $location->coach->info->nickname ?? '',
                    'avatar' => $location->coach->info->avatar ?? '',
                    'distance' => round($location->distance / 1000, 1), // 转换公里
                    'work_status' => $location->coach->work_status,
                    'work_status_text' => TechnicianWorkStatus::fromValue($location->coach->work_status)->label(),
                    'rating' => $location->coach->score->rating_score ?? 5.0,
                    'order_count' => $location->coach->score->order_count ?? 0,
                    'created_at' => $location->coach->created_at->format('Y-m-d H:i:s'),
                ];
            });

            return [
                'code' => 200,
                'message' => '获取成功',
                'data' => $data,
            ];

        } catch (\Exception $e) {
            Log::error('获取附近技师列表失败', [
                'order_id' => $orderId,
                'distance' => $distance,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 重置订单技师
     *
     * @param  array  $data  包含 order_id 和可选的 reason
     */
    public function resetOrderCoach(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否允许重置技师
            $allowedStates = [
                OrderStatus::PAID->value,
                OrderStatus::ACCEPTED->value,
                OrderStatus::DEPARTED->value,
                OrderStatus::ARRIVED->value,
            ];

            abort_if(! in_array($order->state, $allowedStates), 422, '当前订单状态不允许重置技师');

            // 记录原技师ID
            $oldCoachId = $order->coach_id;

            // 更新订单信息
            $order->coach_id = null;
            $order->state = OrderStatus::PAID->value; // 重置为支付状态
            $order->save();

            // 记录技师重置历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => $oldCoachId,
                'new_coach_id' => null,
                'state' => OrderRecordStatus::RESET_COACH->value,
                'remark' => $data['reason'] ?? null,
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '重置技师成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('重置订单技师失败', [
                'order_id' => $data['order_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 临时接单
     *
     * @param  array  $data  包含 order_id 和可选的 reason
     */
    public function temporaryAcceptOrder(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否为已支付状态
            abort_if($order->state !== OrderStatus::PAID->value, 422, '当前订单状态不允许接单');

            // 验证订单必须已指定技师
            abort_if(empty($order->coach_id), 422, '订单未指定技师');

            // 更新订单信息
            $order->state = OrderStatus::ACCEPTED->value; // 更新为已接单状态
            $order->save();

            // 记录临时接单历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => null,
                'new_coach_id' => $order->coach_id,
                'state' => OrderRecordStatus::TEMPORARY_ACCEPTED->value,
                'remark' => $data['reason'] ?? '平台临时接单',
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '接单成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('临时接单失败', [
                'order_id' => $data['order_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 开始服务
     *
     * @param  array  $data  包含 order_id 和可选的 reason
     */
    public function startOrderService(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否允许开始服务
            $allowedStates = [
                OrderStatus::ACCEPTED->value,
                OrderStatus::DEPARTED->value,
                OrderStatus::ARRIVED->value,
            ];

            abort_if(! in_array($order->state, $allowedStates), 422, '当前订单状态不允许开始服务');

            // 更新订单状态
            $order->state = OrderStatus::STARTED->value;
            $order->save();

            // 记录开始服务历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => $order->coach_id,
                'new_coach_id' => $order->coach_id,
                'state' => OrderRecordStatus::STARTED->value,
                'remark' => $data['reason'] ?? '平台代扫核销码',
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '开始服务成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('开始服务失败', [
                'order_id' => $data['order_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 结束服务
     *
     * @param  array  $data  包含 order_id 和可选的 reason
     */
    public function endOrderService(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取订单信息
            $order = Order::findOrFail($data['order_id']);

            // 验证订单状态是否为已开始服务状态
            abort_if($order->state !== OrderStatus::STARTED->value, 422, '当前订单状态不允许结束服务');

            // 更新订单状态
            $order->state = OrderStatus::LEFT->value;
            $order->save();

            // 记录结束服务历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => $order->coach_id,
                'new_coach_id' => $order->coach_id,
                'state' => OrderRecordStatus::LEFT->value,
                'remark' => $data['reason'] ?? '平台代确认撤离',
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '结束服务成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('结束服务失败', [
                'order_id' => $data['order_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    /**
     * 处理报警
     *
     * @param  array  $data  包含 exc_record_id 和 handle_result
     */
    public function handleOrderAlarm(array $data): array
    {
        try {
            DB::beginTransaction();

            // 获取并验证异常记录
            $excRecord = OrderExcRecord::where('id', $data['exc_record_id'])
                ->firstOrFail();

            // 获取关联的订单信息
            $order = Order::findOrFail($excRecord->order_id);

            // 更新异常记录状态
            $excRecord->handle_result = $data['handle_result'];
            $excRecord->handler_id = Auth::user()->id;
            $excRecord->handle_time = now();
            $excRecord->save();

            // 记录处理历史
            OrderRecord::create([
                'order_id' => $order->id,
                'object_id' => Auth::user()->id,
                'object_type' => 'admin',
                'old_coach_id' => $order->coach_id,
                'new_coach_id' => $order->coach_id,
                'state' => OrderRecordStatus::ALARM_HANDLED->value,
                'remark' => $data['handle_result'],
            ]);

            DB::commit();

            return [
                'code' => 200,
                'message' => '处理成功',
                'data' => null,
            ];

        } catch (\Exception $e) {
            DB::rollBack();
            Log::error('处理报警失败', [
                'exc_record_id' => $data['exc_record_id'],
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }
}