<?php

namespace App\Service;

use App\Model\DailyDwOrder;
use App\Model\DailyDwOrderDetails;
use App\Model\Device;
use App\Model\Employee;
use App\Model\Item;
use App\Model\MonthlyDwOrder;
use App\Model\MonthlyDwOrderDetails;
use Illuminate\Support\Facades\DB;

class DeviceWorkService extends Service
{
    //设备月工时单--------------------------------------------
    public function monthlyDwOrderEdit($data,$user){
        list($status,$msg) = $this->monthlyDwOrderRule($data, $user, false);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = MonthlyDwOrder::where('id',$data['id'])->first();
//            $model->month = $data['month'] ?? 0;
//            $model->save();

            $time = time();
            MonthlyDwOrderDetails::where('del_time',0)
                ->where('main_id', $model->id)
                ->update(['del_time' => $time]);
            $this->saveDetail($model->id, $time, $data);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    public function monthlyDwOrderAdd($data,$user){
        list($status,$msg) = $this->monthlyDwOrderRule($data, $user);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = new MonthlyDwOrder();
            $model->code = $this->generateBillNo([
                'top_depart_id' => $user['top_depart_id'],
                'type' => MonthlyDwOrder::Order_type,
                'period' => date("Ym", $data['month'])
            ]);
            $model->month = $data['month'] ?? 0;
            $model->crt_id = $user['id'];
            $model->top_depart_id = $data['top_depart_id'];
            $model->save();

            $this->saveDetail($model->id, time(), $data);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    private function saveDetail($id, $time, $data){
        if(! empty($data['details'])){
            $unit = [];
            foreach ($data['details'] as $value){
                $unit[] = [
                    'main_id' => $id,
                    'device_id' => $value['device_id'],
                    'total_days' => $value['total_days'],
                    'rd_total_days' => $value['rd_total_days'],
                    'total_hours' => $value['total_hours'],
                    'rd_total_hours' => $value['rd_total_hours'],
                    'start_time' => $value['start_time'],
                    'end_time' => $value['end_time'],
                    'crt_time' => $time,
                    'top_depart_id' => $value['top_depart_id'],
                ];
            }
            if(! empty($unit)) MonthlyDwOrderDetails::insert($unit);
        }
    }

    private function getDetail($id){
        $data = MonthlyDwOrderDetails::where('del_time',0)
            ->where('main_id', $id)
            ->select('device_id', 'total_days', 'rd_total_days', 'total_hours', 'rd_total_hours', 'start_time', 'end_time')
            ->get()->toArray();

        $id = array_column($data,'device_id');
        $map = Device::whereIn('id', $id)->select('title','id','code')->get()->toArray();
        $map = array_column($map,null,'id');

        foreach ($data as $key => $value){
            $tmp = $map[$value['device_id']] ?? [];
            $merge = [];
            $merge['device_title'] = $tmp['title'];
            $merge['device_code'] = $tmp['code'];
            $merge['start_time'] = date("Y-m-d", $value['start_time']);
            $merge['end_time'] = date("Y-m-d", $value['end_time']);
            $data[$key] = array_merge($value, $merge);
        }

        $detail = [
            'details' => $data,
        ];

        foreach ($detail as $key => $value) {
            if (empty($value)) {
                $detail[$key] = (object)[]; // 转成 stdClass 对象
            }
        }

        return $detail;
    }

    public function monthlyDwOrderDel($data){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];

        try {
            DB::beginTransaction();
            $time = time();

            MonthlyDwOrder::where('del_time',0)
                ->whereIn('id',$data['id'])
                ->update(['del_time' => $time]);

            MonthlyDwOrderDetails::where('del_time',0)
                ->whereIn('main_id', $data['id'])
                ->update(['del_time' => $time]);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    public function monthlyDwOrderDetail($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];
        $customer = MonthlyDwOrder::where('del_time',0)
            ->where('id',$data['id'])
            ->first();
        if(empty($customer)) return [false,'设备月度工时单不存在或已被删除'];
        $customer = $customer->toArray();
        $customer['crt_name'] = Employee::where('id',$customer['crt_id'])->value('title');
        $customer['crt_time'] = $customer['crt_time'] ? date("Y-m-d H:i:s",$customer['crt_time']): '';
        $customer['month'] = $customer['month'] ? date("Y-m",$customer['month']): '';

        $details = $this->getDetail($data['id']);
        $customer = array_merge($customer, $details);

        return [true, $customer];
    }

    public function monthlyDwOrderCommon($data,$user, $field = []){
        if(empty($field)) $field = MonthlyDwOrder::$field;

        $model = MonthlyDwOrder::Clear($user,$data);
        $model = $model->where('del_time',0)
            ->select($field)
            ->orderby('id', 'desc');

        if(! empty($data['code'])) $model->where('code', 'LIKE', '%'.$data['code'].'%');
        if(! empty($data['id'])) $model->whereIn('id', $data['id']);
        if(! empty($data['crt_time'][0]) && ! empty($data['crt_time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['crt_time']);
            $model->where('crt_time','>=',$return[0]);
            $model->where('crt_time','<=',$return[1]);
        }

        return $model;
    }

    public function monthlyDwOrderList($data,$user){
        $model = $this->monthlyDwOrderCommon($data, $user);
        $list = $this->limit($model,'',$data);
        $list = $this->fillData($list);

        return [true, $list];
    }

    public function monthlyDwOrderRule(&$data, $user, $is_add = true){
        if(empty($data['month'])) return [false, '月份不能为空'];
        $data['month'] = $this->changeDateToDate($data['month']);

        $data['top_depart_id'] = $user['top_depart_id'];
        if(empty($data['details'])) return [false, '设备月度工时单明细不能为空'];
        foreach ($data['details'] as $key => $value){
            if(empty($value['device_id'])) return [false, '设备不能为空'];
            $res = $this->checkNumber($value['total_days'],0,'non-negative');
            if(! $res['valid']) return [false,'出勤总天数：' . $res['error']];
            $res = $this->checkNumber($value['rd_total_days'],0,'non-negative');
            if(! $res['valid']) return [false,'研发出勤总天数：' . $res['error']];
            $res = $this->checkNumber($value['total_hours'],2,'non-negative');
            if(! $res['valid']) return [false,'出勤总工时：' . $res['error']];
            $res = $this->checkNumber($value['rd_total_hours'],2,'non-negative');
            if(! $res['valid']) return [false,'研发总工时：' . $res['error']];

            if(empty($value['start_time'])) return [false, '开始时间不能为空'];
            $data['details'][$key]['start_time'] = $this->changeDateToDate($value['start_time']);
            if(empty($value['end_time'])) return [false, '结束时间不能为空'];
            $data['details'][$key]['end_time'] = $this->changeDateToDate($value['end_time']);
            $data['details'][$key]['top_depart_id'] = $data['top_depart_id'];
        }
        list($status, $msg) = $this->checkArrayRepeat($data['details'],'device_id','设备');
        if(! $status) return [false, $msg];

        if($is_add){
            $bool = MonthlyDwOrder::where('top_depart_id', $data['top_depart_id'])
                ->where('month', $data['month'])
                ->where('del_time',0)
                ->exists();
        }else{
            if(empty($data['id'])) return [false,'ID不能为空'];
            $bool = MonthlyDwOrder::where('top_depart_id', $data['top_depart_id'])
                ->where('month', $data['month'])
                ->where('id','<>',$data['id'])
                ->where('del_time',0)
                ->exists();
        }
        if($bool) return [false, date("Y-m", $data['month']) . '已存在设备月度研发工时单'];

        return [true, ''];
    }

    public function fillData($data){
        if(empty($data['data'])) return $data;

        $emp = (new EmployeeService())->getEmployeeMap(array_unique(array_column($data['data'],'crt_id')));
        foreach ($data['data'] as $key => $value){
            $data['data'][$key]['crt_time'] = $value['crt_time'] ? date('Y-m-d H:i:s',$value['crt_time']) : '';
            $data['data'][$key]['month'] = $value['month'] ? date('Y-m',$value['month']) : '';
            $data['data'][$key]['crt_name'] = $emp[$value['crt_id']] ?? '';
        }

        return $data;
    }

    public function fillDataForExport($data, $column, &$return)
    {
        if(empty($data)) return;

        $mainIds = array_column($data, 'id');
        // 获取详情映射 [main_id => [details...]]
        $detailsMap = $this->getDetailsMap($mainIds);

        // 默认空行模板
        $defaultRow = array_fill_keys($column, '');

        foreach ($data as $main) {
            $mainId = $main['id'];
            $details = $detailsMap[$mainId] ?? [];

            // 提取主表信息
            $mainInfo = [
                'code'  => $main['code'],
                'month' => $main['month'] ? date('Y-m', $main['month']) : '',
            ];

            if (empty($details)) {
                // 如果没有详情，至少导出一行主表信息（可选）
                $return[] = array_merge($defaultRow, $mainInfo);
            } else {
                // 核心：遍历详情，每一行详情都合并主表信息
                foreach ($details as $sub) {
                    // 合并主表字段 + 详情字段
                    $fullRow = array_merge($mainInfo, $sub);
                    // 过滤掉不在导出列里的字段，并补充缺失列
                    $return[] = array_merge($defaultRow, array_intersect_key($fullRow, $defaultRow));
                }
            }
        }
    }

    public function getDetailsMap($main_ids)
    {
        // 获取详情
        $details = MonthlyDwOrderDetails::where('del_time', 0)
            ->whereIn('main_id', $main_ids)
            ->get();

        // 获取设备信息
        $empIds = $details->pluck('device_id')->unique();
        $empMap = Device::whereIn('id', $empIds)->get()->keyBy('id');

        $res = [];
        foreach ($details as $item) {
            $tmpEmp = $empMap[$item->device_id] ?? null;

            // 组装每一行详情需要展示的字段
            $res[$item->main_id][] = [
                'device_code' => $tmpEmp ? $tmpEmp->code : '',
                'device_title' => $tmpEmp ? $tmpEmp->title : '',
                'total_days'     => $item->total_days,
                'rd_total_days'  => $item->rd_total_days,
                'total_hours'    => $item->total_hours,
                'rd_total_hours' => $item->rd_total_hours,
                'start_time'     => $item->start_time ? date("Y-m-d", $item->start_time) : '',
                'end_time'       => $item->end_time ? date("Y-m-d", $item->end_time) : '',
            ];
        }
        return $res; // 返回 [main_id => [detail_row, detail_row]]
    }

    //设备日工时单----------------------------------------------
    public function dailyDwOrderEdit($data,$user){
        list($status,$msg) = $this->dailyDwOrderRule($data, $user, false);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = DailyDwOrder::where('id',$data['id'])->first();
            $model->item_id = $data['item_id'] ?? 0;
            $model->save();

            $time = time();
            DailyDwOrderDetails::where('del_time',0)
                ->where('main_id', $model->id)
                ->update(['del_time' => $time]);
            $this->saveDetailDaily($model->id, $time, $data);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    public function dailyDwOrderAdd($data,$user){
        list($status,$msg) = $this->dailyDwOrderRule($data, $user);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = new DailyDwOrder();
            $model->code = $this->generateBillNo([
                'top_depart_id' => $user['top_depart_id'],
                'type' => DailyDwOrder::Order_type,
                'period' => date("Ym", $data['order_time'])
            ]);
            $model->order_time = $data['order_time'] ?? 0;
            $model->item_id = $data['item_id'] ?? 0;
            $model->crt_id = $user['id'];
            $model->top_depart_id = $data['top_depart_id'];
            $model->save();

            $this->saveDetailDaily($model->id, time(), $data);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    private function saveDetailDaily($id, $time, $data){
        if(! empty($data['details'])){
            $unit = [];
            foreach ($data['details'] as $value){
                $unit[] = [
                    'main_id' => $id,
                    'device_id' => $value['device_id'],
                    'start_time_hour' => $value['start_time_hour'],
                    'start_time_min' => $value['start_time_min'],
                    'end_time_hour' => $value['end_time_hour'],
                    'end_time_min' => $value['end_time_min'],
                    'total_work_min' => $value['total_work_min'],
                    'crt_time' => $time,
                    'top_depart_id' => $value['top_depart_id'],
                ];
            }
            if(! empty($unit)) DailyDwOrderDetails::insert($unit);
        }
    }

    private function getDetailDaily($id){
        $data = DailyDwOrderDetails::where('del_time',0)
            ->where('main_id', $id)
            ->select('device_id', 'start_time_hour', 'start_time_min', 'end_time_hour', 'end_time_min', 'total_work_min')
            ->get()->toArray();

        $id = array_column($data,'device_id');
        $map = Device::whereIn('id',$id)
            ->select('title','id','number')
            ->get()
            ->keyBy('id')
            ->toArray();

        foreach ($data as $key => $value){
            $tmp = $map[$value['device_id']] ?? [];
            $merge = [];
            $merge['device_title'] = $tmp['title'];
            $merge['device_code'] = $tmp['code'];
            $data[$key] = array_merge($value, $merge);
        }

        $detail = [
            'details' => $data,
        ];

        foreach ($detail as $key => $value) {
            if (empty($value)) {
                $detail[$key] = (object)[]; // 转成 stdClass 对象
            }
        }

        return $detail;
    }

    public function dailyDwOrderDel($data){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];

        try {
            DB::beginTransaction();
            $time = time();

            DailyDwOrder::where('del_time',0)
                ->whereIn('id',$data['id'])
                ->update(['del_time' => $time]);

            DailyDwOrderDetails::where('del_time',0)
                ->whereIn('main_id', $data['id'])
                ->update(['del_time' => $time]);

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true, ''];
    }

    public function dailyDwOrderDetail($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];
        $customer = DailyDwOrder::where('del_time',0)
            ->where('id',$data['id'])
            ->first();
        if(empty($customer)) return [false,'设备日工时单不存在或已被删除'];
        $customer = $customer->toArray();
        $customer['crt_name'] = Employee::where('id',$customer['crt_id'])->value('title');
        $customer['crt_time'] = $customer['crt_time'] ? date("Y-m-d H:i:s",$customer['crt_time']): '';
        $item = Item::where('id', $customer['item_id'])->first();
        $customer['item_title'] = $item->title;
        $customer['item_code'] = $item->code;
        $customer['order_time'] = $customer['order_time'] ? date("Y-m-d",$customer['order_time']): '';

        $details = $this->getDetailDaily($data['id']);
        $customer = array_merge($customer, $details);

        return [true, $customer];
    }

    public function dailyDwOrderCommon($data,$user, $field = []){
        if(empty($field)) $field = DailyDwOrder::$field;

        $model = DailyDwOrder::Clear($user,$data);
        $model = $model->where('del_time',0)
            ->select($field)
            ->orderby('id', 'desc');

        if(! empty($data['code'])) $model->where('code', 'LIKE', '%'.$data['code'].'%');
        if(! empty($data['id'])) $model->whereIn('id', $data['id']);
        if(! empty($data['crt_time'][0]) && ! empty($data['crt_time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['crt_time']);
            $model->where('crt_time','>=',$return[0]);
            $model->where('crt_time','<=',$return[1]);
        }

        return $model;
    }

    public function dailyDwOrderList($data,$user){
        $model = $this->dailyDwOrderCommon($data, $user);
        $list = $this->limit($model,'',$data);
        $list = $this->fillDataDaily($list);

        return [true, $list];
    }

    public function dailyDwOrderRule(&$data, $user, $is_add = true){
        if(empty($data['order_time'])) return [false, '单据日期不能为空'];
        $data['order_time'] = $this->changeDateToDate($data['order_time']);
        $orderTime = $data['order_time'];
        $itemId = $data['item_id'] ?? 0;

        if(empty($itemId)) return [false, '项目不能为空'];
        $bool = Item::where('del_time',0)->where('id', $itemId)->exists();
        if(!$bool) return [false, '项目不存在或已被删除'];

        $data['top_depart_id'] = $user['top_depart_id'];
        if(empty($data['details'])) return [false, '设备日工时单明细不能为空'];

        // --- 1. 批量预获取人员信息，用于报错提示 ---
        $allEmpIds = array_filter(array_unique(array_column($data['details'], 'device_id')));

        $empDisplayMap = Device::whereIn('id', $allEmpIds)
            ->get(['id', 'code', 'title'])
            ->mapWithKeys(function($item){
                return [$item->id => "[{$item->code}]{$item->title}"];
            })->toArray();

        // 2. 本次提交内部重叠记录
        $internalOverlap = [];

        foreach ($data['details'] as $key => $value){
            $empId = $value['device_id'] ?? 0;
            if(empty($empId)) return [false, '设备不能为空'];

            $empName = $empDisplayMap[$empId] ?? "ID:{$empId}";

            // 校验数字有效性
            $res = $this->checkNumber($value['start_time_hour'], 0, 'non-negative');
            if(!$res['valid']) return [false, "设备{$empName}开始点：" . $res['error']];
            if($value['start_time_hour'] > 23) return [false, false, "设备{$empName}开始点不合法"];
            $res = $this->checkNumber($value['start_time_min'], 0, 'non-negative');
            if(!$res['valid']) return [false, "设备{$empName}开始分：" . $res['error']];
            if($value['start_time_min'] > 60) return [false, false, "设备{$empName}开始点不合法"];
            $res = $this->checkNumber($value['end_time_hour'], 0, 'non-negative');
            if(!$res['valid']) return [false, "设备{$empName}结束点：" . $res['error']];
            if($value['end_time_hour'] > 24) return [false, false, "设备{$empName}结束点不合法"];
            $res = $this->checkNumber($value['end_time_min'], 0, 'non-negative');
            if(!$res['valid']) return [false, "设备{$empName}结束分：" . $res['error']];
            if($value['end_time_min'] > 60) return [false, false, "设备{$empName}结束分不合法"];

            $currentStart = $value['start_time_hour'] * 60 + $value['start_time_min'];
            $currentEnd   = $value['end_time_hour'] * 60 + $value['end_time_min'];

            if ($currentStart >= $currentEnd) {
                return [false, "设备{$empName}：开始时间必须早于结束时间"];
            }

            // --- 3. 内部重叠校验（防止一次提交多行重复） ---
            if (isset($internalOverlap[$empId])) {
                foreach ($internalOverlap[$empId] as $period) {
                    if ($currentStart < $period['e'] && $period['s'] < $currentEnd) {
                        return [false, "设备{$empName}在本次提交的多行明细中时间段重叠"];
                    }
                }
            }
            $internalOverlap[$empId][] = ['s' => $currentStart, 'e' => $currentEnd];

            $query = DB::table('daily_dw_order_details as d')
                ->join('daily_dw_order as m', 'd.main_id', '=', 'm.id')
                ->where('m.top_depart_id', $data['top_depart_id'])
                ->where('m.order_time', $orderTime)
                ->where('m.item_id', $itemId)
                ->where('d.device_id', $empId)
                ->where('m.del_time', 0)
                ->where('d.del_time', 0);

            if (!$is_add && !empty($data['id'])) {
                $query->where('m.id', '<>', $data['id']);
            }

            $existingPeriods = $query->select('d.start_time_hour', 'd.start_time_min', 'd.end_time_hour', 'd.end_time_min')->get();

            foreach ($existingPeriods as $p) {
                $exStart = $p->start_time_hour * 60 + $p->start_time_min;
                $exEnd   = $p->end_time_hour * 60 + $p->end_time_min;

                if ($currentStart < $exEnd && $exStart < $currentEnd) {
                    return [false, "设备{$empName}在该项目该日已有其他工时单创建重叠的时间段数据"];
                }
            }

            $data['details'][$key]['top_depart_id'] = $data['top_depart_id'];
        }

        if(!$is_add){
            if(empty($data['id'])) return [false,'ID不能为空'];
            $bool = DailyDwOrder::where('top_depart_id', $data['top_depart_id'])
                ->where('id',$data['id'])
                ->where('del_time',0)
                ->exists();
            if(!$bool) return [false, '设备日工时单不存在或已被删除'];
        }

        return [true, ''];
    }

    public function fillDataDaily($data){
        if(empty($data['data'])) return $data;

        $emp = (new EmployeeService())->getEmployeeMap(array_unique(array_column($data['data'],'crt_id')));
        $item = (new ItemService())->getItemMap(array_unique(array_column($data['data'],'item_id')));
        foreach ($data['data'] as $key => $value){
            $data['data'][$key]['crt_time'] = $value['crt_time'] ? date('Y-m-d H:i:s',$value['crt_time']) : '';
            $data['data'][$key]['order_time'] = $value['order_time'] ? date('Y-m-d',$value['order_time']) : '';
            $data['data'][$key]['crt_name'] = $emp[$value['crt_id']] ?? '';
            $item_tmp = $item[$value['item_id']] ?? [];
            $data['data'][$key]['item_title'] = $item_tmp['title'] ?? '';
            $data['data'][$key]['item_code'] = $item_tmp['code'] ?? '';
        }

        return $data;
    }

    public function fillDataForExportDaily($data, $column, &$return)
    {
        if (empty($data)) return;

        $mainIds = array_column($data, 'id');
        // 1. 获取详情及所有关联档案（项目、设备）的映射
        $detailsMap = $this->getDwDailyDetailsMap($mainIds, $data);

        foreach ($data as $main) {
            $mainId = $main['id'];
            $details = $detailsMap[$mainId] ?? [];

            // 2. 提取并格式化主表共有信息
            $mainInfo = [
                'code'       => $main['code'],
                'order_time' => !empty($main['order_time']) ? date('Y-m-d', $main['order_time']) : '',
            ];

            if (empty($details)) {
                // 无明细时只导出一行主表信息
                $tempRow = [];
                foreach ($column as $col) {
                    $tempRow[] = $mainInfo[$col] ?? '';
                }
                $return[] = $tempRow;
            } else {
                // 3. 平铺：将设备明细信息、项目信息与主表信息合并
                foreach ($details as $sub) {
                    $fullRowData = array_merge($mainInfo, $sub);
                    $tempRow = [];
                    foreach ($column as $col) {
                        $tempRow[] = $fullRowData[$col] ?? '';
                    }
                    $return[] = $tempRow;
                }
            }
        }
    }

    public function getDwDailyDetailsMap($mainIds, $mainData)
    {
        // 1. 获取设备工时子表记录
        $details = DB::table('daily_dw_order_details')
            ->where('del_time', 0)
            ->whereIn('main_id', $mainIds)
            ->get();

        // 2. 提取关联 ID（设备 ID 和 项目 ID）
        $deviceIds = $details->pluck('device_id')->unique();
        $itemIds   = array_unique(array_column($mainData, 'item_id'));

        // 3. 批量获取设备档案和项目档案
        $deviceMap = DB::table('device')
            ->whereIn('id', $deviceIds)
            ->get(['id', 'title', 'code'])
            ->keyBy('id');

        $itemMap = DB::table('item')
            ->whereIn('id', $itemIds)
            ->get(['id', 'title', 'code'])
            ->keyBy('id');

        // 4. 预挂载主表的项目信息（item_code, item_title）
        $mainItemInfo = [];
        foreach ($mainData as $m) {
            $proj = $itemMap[$m['item_id']] ?? null;
            $mainItemInfo[$m['id']] = [
                'item_code'  => $proj ? $proj->code : '',
                'item_title' => $proj ? $proj->title : '',
            ];
        }

        $res = [];
        // 如果没有详情，初始化空结构
        if ($details->isEmpty()) {
            foreach ($mainItemInfo as $mId => $info) {
                $res[$mId] = [];
            }
            return $res;
        }

        // 5. 循环子表，合并设备档案信息
        foreach ($details as $item) {
            $device = $deviceMap[$item->device_id] ?? null;

            $detailRow = [
                // 设备信息（对应 Excel 配置中的 key）
                'device_code'  => $device ? $device->code : '',
                'device_title' => $device ? $device->title : '',
                // 时间信息
                'start_time'   => sprintf('%02d:%02d', $item->start_time_hour, $item->start_time_min),
                'end_time'     => sprintf('%02d:%02d', $item->end_time_hour, $item->end_time_min),
                // 项目信息（由主表平铺而来）
                'item_code'    => $mainItemInfo[$item->main_id]['item_code'] ?? '',
                'item_title'   => $mainItemInfo[$item->main_id]['item_title'] ?? '',
            ];

            $res[$item->main_id][] = $detailRow;
        }

        return $res;
    }
}