<?php

namespace App\Service;

use App\Jobs\ProcessDataJob;
use App\Model\CalendarDetails;
use App\Model\DailyPwOrder;
use App\Model\DailyPwOrderDetails;
use App\Model\Employee;
use App\Model\Item;
use App\Model\MonthlyPwOrder;
use App\Model\MonthlyPwOrderDetails;
use App\Model\RuleSetDetails;
use Illuminate\Support\Facades\DB;

class PersonWorkService extends Service
{
    // 人员月工时单-------------------------------------------
    public function monthlyPwOrderEdit($data,$user){
        list($status,$msg) = $this->monthlyPwOrderRule($data, $user, false);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

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

            $time = time();
            MonthlyPwOrderDetails::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 monthlyPwOrderAdd($data,$user){
        list($status,$msg) = $this->monthlyPwOrderRule($data, $user);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = new MonthlyPwOrder();
            $model->code = $this->generateBillNo([
                'top_depart_id' => $user['top_depart_id'],
                'type' => MonthlyPwOrder::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,
                    'employee_id' => $value['employee_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'],
                    'crt_time' => $time,
                    'top_depart_id' => $value['top_depart_id'],
                ];
            }
            if(! empty($unit)) MonthlyPwOrderDetails::insert($unit);
        }
    }

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

        $id = array_column($data,'employee_id');
        $map = Employee::whereIn('id', $id)->select('title','id','number')->get()->toArray();
        $map = array_column($map,null,'id');

        foreach ($data as $key => $value){
            $tmp = $map[$value['employee_id']] ?? [];
            $merge = [];
            $merge['employee_title'] = $tmp['title'];
            $merge['employee_number'] = $tmp['number'];

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

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

            $month = MonthlyPwOrder::where('del_time',0)
                ->whereIn('id',$data['id'])
                ->pluck('month')
                ->toArray();

            //归档
            list($status, $msg) = ArchiveService::isArchive($month, $user);
            if(! $status) return [false, $msg];

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

            MonthlyPwOrderDetails::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 monthlyPwOrderDetail($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];
        $customer = MonthlyPwOrder::where('del_time',0)
            ->where('id',$data['id'])
            ->first();
        if(empty($customer)) return [false,'人员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']): '';
        $map = ArchiveService::fillIsArchive($customer['month'], $user);
        $customer['is_archive'] = $map[$customer['month']] ?? false;
        $customer['month'] = $customer['month'] ? date("Y-m",$customer['month']): '';

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

        return [true, $customer];
    }

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

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

        if(! empty($data['time'][0]) && ! empty($data['time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['time']);
            $model->where('month','>=',$return[0]);
            $model->where('month','<=',$return[1]);
        }
        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 monthlyPwOrderList($data,$user){
        $model = $this->monthlyPwOrderCommon($data, $user);
        $list = $this->limit($model,'',$data);
        $list = $this->fillData($list, $user);

        return [true, $list];
    }

    public function monthlyPwOrderRule(&$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'];

        //归档
        list($status, $msg) = ArchiveService::isArchive($data['month'], $user);
        if(! $status) return [false, $msg];

        if (empty($data['details'])) return [false, '人员月度工时单明细不能为空'];

        //获取系统计算的考勤基准数据 ---
        $empIds = array_column($data['details'], 'employee_id');
        list($status, $systemStats) = (new EmployeeService())->getEmployeesMonthStats($empIds, $data['month'], $user);
        if (!$status) return [false, $systemStats]; // 如果日历未设置，直接拦截

        // 字段中文映射，用于报错
        $fieldNames = [
            'total_days'    => '出勤总天数',
            'rd_total_days' => '研发出勤总天数',
            'total_hours'   => '出勤总工时',
            'rd_total_hours'=> '研发总工时'
        ];

        foreach ($data['details'] as $key => $value) {
            $lineTitle = "第" . ($key + 1) . "行：";
            if (empty($value['employee_id'])) return [false, '人员不能为空'];
            $empId = $value['employee_id'];

            // 基础数字格式检查
            foreach ($fieldNames as $field => $title) {
                if(! isset($value[$field])) return [false, $lineTitle . $title . "不存在"];
                $precision = 2;
                $res = $this->checkNumber($value[$field], $precision, 'non-negative');
                if (!$res['valid']) return [false, $lineTitle . $value['employee_title'] . "的" . $title . "：" . $res['error']];
            }

            // --- 业务逻辑校验：出勤天数与工时合法性 ---
            $sysData = $systemStats[$empId] ?? null;
            if ($sysData) {
                // 1. 研发天数不能大于出勤总天数
                if ($value['rd_total_days'] > $value['total_days']) {
                    return [false, $lineTitle . "研发出勤天数不能大于出勤总天数"];
                }

                // 2. 研发工时不能大于出勤总工时
                if ($value['rd_total_hours'] > $value['total_hours']) {
                    return [false, $lineTitle . "研发总工时不能大于出勤总工时"];
                }

                // 4. 校验出勤总天数是否超过了系统计算的上限
                if ($value['total_days'] != $sysData['attendance_days']) {
                    return [false, $lineTitle . "人员[{$empId}]填写的出勤总天数({$value['total_days']})不等于系统核算的天数({$sysData['attendance_days']})"];
                }

                //校验出勤总工时是否超过了系统计算的上限
                if ($value['total_hours'] != $sysData['final_work_hour']) {
                    return [false, $lineTitle . "人员[{$empId}]填写的出勤总工时({$value['total_hours']})不等于系统核算的工时({$sysData['final_work_hour']})"];
                }
            }

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

        // --- 查重与唯一性校验 ---
        list($status, $msg) = $this->checkArrayRepeat($data['details'], 'employee_id', '人员');
        if (!$status) return [false, $msg];

        $query = MonthlyPwOrder::where('top_depart_id', $data['top_depart_id'])
            ->where('month', $data['month'])
            ->where('del_time', 0);

        if (!$is_add) {
            if (empty($data['id'])) return [false, 'ID不能为空'];
            $query->where('id', '<>', $data['id']);
        }

        if ($query->exists()) {
            return [false, date("Y-m", $data['month']) . '已存在人员月度研发工时单'];
        }

        return [true, ''];
    }

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

        $emp = (new EmployeeService())->getEmployeeMap(array_unique(array_column($data['data'],'crt_id')));
        $map = ArchiveService::fillIsArchive(array_unique(array_column($data['data'],'month')), $user);

        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']] ?? '';
            $data['data'][$key]['is_archive'] = $map[$value['month']] ?? false;
        }

        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 = MonthlyPwOrderDetails::where('del_time', 0)
            ->whereIn('main_id', $main_ids)
            ->get();

        // 获取人员信息
        $empIds = $details->pluck('employee_id')->unique();
        $empMap = Employee::whereIn('id', $empIds)->get()->keyBy('id');

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

            // 组装每一行详情需要展示的字段
            $res[$item->main_id][] = [
                'employee_number' => $tmpEmp ? $tmpEmp->number : '',
                'employee_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,
            ];
        }
        return $res; // 返回 [main_id => [detail_row, detail_row]]
    }

    // 人员日工时单 ------------------------------------------------

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

        try {
            DB::beginTransaction();

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

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

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

        return [true, ''];
    }

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

        try {
            DB::beginTransaction();

            $model = new DailyPwOrder();
            $model->code = $this->generateBillNo([
                'top_depart_id' => $user['top_depart_id'],
                'type' => DailyPwOrder::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, $user);

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

        return [true, ''];
    }

    private function saveDetailDaily($id, $time, $data, $user){
        if(! empty($data['details'])){
            $unit = [];
            foreach ($data['details'] as $value){
                $unit[] = [
                    'main_id' => $id,
                    'employee_id' => $value['employee_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'],
                    'order_time' =>  $data['order_time'] ?? 0,
                    'item_id' =>  $data['item_id'],
                    'crt_id' =>  $user['id'],
                ];
            }
            if(! empty($unit)) DailyPwOrderDetails::insert($unit);
        }
    }

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

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

        foreach ($data as $key => $value){
            $tmp = $map[$value['employee_id']] ?? [];
            $merge = [];
            $merge['employee_title'] = $tmp['title'];
            $merge['employee_number'] = $tmp['number'];
            $data[$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 dailyPwOrderDel($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];

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

            $month = DailyPwOrder::where('del_time',0)
                ->whereIn('id',$data['id'])
                ->pluck('order_time')
                ->toArray();

            //归档
            list($status, $msg) = ArchiveService::isArchive($month, $user);
            if(! $status) return [false, $msg];

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

            DailyPwOrderDetails::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 dailyPwOrderDetail($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];
        $customer = DailyPwOrder::where('del_time',0)
            ->where('id',$data['id'])
            ->first();
        if(empty($customer)) return [false,'人员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 ?? '';
        $map = ArchiveService::fillIsArchive($customer['order_time'], $user);
        $customer['is_archive'] = $map[$customer['order_time']] ?? false;
        $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 dailyPwOrderCommon($data,$user, $field = []){
        if(empty($field)) $field = DailyPwOrder::$field;

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

        if(! empty($data['time'][0]) && ! empty($data['time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['time']);
            $model->where('order_time','>=',$return[0]);
            $model->where('order_time','<=',$return[1]);
        }
        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]);
        }
        if (!empty($data['item_title'])) {
            $models = Item::TopClear($user,$data);
            $id = $models->where('del_time',0)
                ->where('title', 'LIKE', '%'.$data['item_title'].'%')
                ->pluck('id')
                ->all();
            $model->whereIn('item_id', $id);
        }

        return $model;
    }

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

        return [true, $list];
    }

    public function dailyPwOrderRule(&$data, $user, $is_add = true){
        $data['top_depart_id'] = $user['top_depart_id'];
        if(empty($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;

        // 使用日期范围限制
        list($status, $msg) = MiddleGroundService::checkTimestampInRange($data['order_time'], $data['top_depart_id']);
        if(! $status) return [false, $msg];

        //归档
        list($status, $msg) = ArchiveService::isArchive($data['order_time'], $user);
        if(! $status) return [false, $msg];

        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'];

        if(empty($data['details'])) return [false, '人员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'], 'employee_id')));

        // 如果需要工号+姓名，建议这样获取：
        $empDisplayMap = Employee::whereIn('id', $allEmpIds)
            ->get(['id', 'number', 'title'])
            ->mapWithKeys(function($item){
                return [$item->id => "[{$item->number}]{$item->title}"];
            })->toArray();

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

        foreach ($data['details'] as $key => $value){
            $line = $key + 1;
            $t = "第" . $line . "行";

            $empId = $value['employee_id'] ?? 0;
            if(empty($empId)) return [false, '人员不能为空'];

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

            $res = $this->checkNumber($value['start_time_hour'], 0, 'non-negative');
            if(!$res['valid']) return [false, $t . "人员{$empName}开始点：" . $res['error']];
            if($value['start_time_hour'] > 23) return [false, false, $t . "人员{$empName}开始点不合法"];
            $res = $this->checkNumber($value['start_time_min'], 0, 'non-negative');
            if(!$res['valid']) return [false, $t . "人员{$empName}开始分：" . $res['error']];
            if($value['start_time_min'] > 60) return [false, false, $t . "人员{$empName}开始点不合法"];
            $res = $this->checkNumber($value['end_time_hour'], 0, 'non-negative');
            if(!$res['valid']) return [false, $t . "人员{$empName}结束点：" . $res['error']];
            if($value['end_time_hour'] > 24) return [false, false, $t . "人员{$empName}结束点不合法"];
            $res = $this->checkNumber($value['end_time_min'], 0, 'non-negative');
            if(!$res['valid']) return [false, $t . "人员{$empName}结束分：" . $res['error']];
            if($value['end_time_min'] > 60) return [false, false, $t .  "人员{$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, $t . "人员{$empName}：开始时间必须早于结束时间"];
            }

            // --- 新增：总分钟数校验 ---
            $calculatedTotal = $currentEnd - $currentStart;
            if (!isset($value['total_work_min']) || intval($value['total_work_min']) !== $calculatedTotal) {
                return [false, $t . "人员{$empName}：总工时计算有误，应为 {$calculatedTotal} 分钟"];
            }

            // --- 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'] < $currentEnd) {
                        return [false, "人员{$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_pw_order_details as d')
                ->join('daily_pw_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.employee_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 < $currentEnd) {
                    return [false, "人员{$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 = DailyPwOrder::where('top_depart_id', $data['top_depart_id'])
                ->where('id',$data['id'])
                ->where('del_time',0)
                ->exists();
            if(!$bool) return [false, '人员日工时单不存在或已被删除'];
        }

        return [true, ''];
    }

    public function fillDataDaily($data, $user){
        if(empty($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')));
        $map = ArchiveService::fillIsArchive(array_unique(array_column($data['data'],'order_time')), $user);
        foreach ($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'] ?? '';
            $data['data'][$key]['is_archive'] = $map[$value['order_time']] ?? false;
        }

        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、人员）的映射
        $detailsMap = $this->getDailyDetailsMap($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[] = $tempRow;
            } else {
                // 3. 平铺：将详情里的项目信息、人员信息与主表信息合并
                foreach ($details as $sub) {
                    $fullRowData = array_merge($mainInfo, $sub);
                    $tempRow = [];
                    foreach ($column as $col) {
                        $tempRow[] = $fullRowData[$col] ?? '';
                    }
                    $return[] = $tempRow;
                }
            }
        }
    }

    public function getDailyDetailsMap($mainIds, $mainData)
    {
        // 1. 获取所有子表记录
        $details = DB::table('daily_pw_order_details')
            ->where('del_time', 0)
            ->whereIn('main_id', $mainIds)
            ->get();

        // 2. 提取所有关联 ID
        $empIds = $details->pluck('employee_id')->unique();
        $itemIds = array_unique(array_column($mainData, 'item_id')); // 从主表数组提取项目ID

        // 3. 批量获取档案 Map
        $empMap = DB::table('employee')
            ->whereIn('id', $empIds)
            ->get(['id', 'title', 'number'])
            ->keyBy('id');

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

        // 4. 将主表的项目信息预先挂载到主表 ID 下，方便后续合并
        $mainItemInfo = [];
        foreach ($mainData as $m) {
            $proj = $itemMap[$m['item_id']] ?? null;
            $mainItemInfo[$m['id']] = [
                'item_code'  => $proj ? $proj->code : '',
                'item_title' => $proj ? $proj->title : '',
            ];
        }

        $res = [];
        if ($details->isEmpty()) {
            // 如果没有详情，把项目信息返回去，确保主表能导出行
            foreach ($mainItemInfo as $mId => $info) {
                $res[$mId] = [];
            }
            return $res;
        }

        foreach ($details as $item) {
            $emp = $empMap[$item->employee_id] ?? null;

            // 组装明细行数据
            $detailRow = [
                // 人员信息
                'employee_number' => $emp ? $emp->number : '',
                'employee_title'  => $emp ? $emp->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),
                // 将主表的项目信息也塞进每一行详情里实现平铺
                'item_code'       => $mainItemInfo[$item->main_id]['item_code'] ?? '',
                'item_title'      => $mainItemInfo[$item->main_id]['item_title'] ?? '',
                'total_work_min' => $item->total_work_min,
            ];

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

        return $res;
    }

    public function dailyPwOrderCreate($data, $user)
    {
        $topDepartId = $user['top_depart_id'];
        if (empty($data['month'])) return [false, '月份不能为空'];

        $monthStart = $this->changeDateToDate($data['month']);

        // --- 一开始就做的核心校验 ---

        // 1. 检查是否存在月度工时明细（如果没有，队列执行也是徒劳）
        $hasMonthlyOrder = DB::table('monthly_pw_order_details as d')
            ->join('monthly_pw_order as m', 'm.id', '=', 'd.main_id')
            ->where('m.month', $monthStart)
            ->where('m.top_depart_id', $topDepartId)
            ->where('m.del_time', 0)
            ->where('d.del_time', 0)
            ->exists();

        if (!$hasMonthlyOrder) return [false, '未找到该月份的月度工时明细，请先生成人员月度工时单'];

        // 2. 检查是否配置了工作日历
        $hasCalendar = DB::table('calendar_details')
            ->where('month', $monthStart)
            ->where('del_time', 0)
            ->exists();

        if (!$hasCalendar) return [false, '该月份工作日历未配置'];

        // 3. 检查是否配置了项目比例规则
        $hasRules = DB::table('rule_set as r')
            ->where('r.month', $monthStart)
            ->where('r.top_depart_id', $topDepartId)
            ->where('r.del_time', 0)
            ->exists();

        if (!$hasRules) return [false, '未找到该月份的规则配置单'];

        $data['type'] = "p_work";
        ProcessDataJob::dispatch($data, $user)->onQueue(DailyPwOrder::job);

        return [true, '生成任务已提交，系统正在后台处理，请稍后查看'];
    }

    public function dailyPwOrderCreateMain($data, $user)
    {
        $topDepartId = $user['top_depart_id'];
        if (empty($data['month'])) return [false, '月份不能为空'];

        $monthStart = $this->changeDateToDate($data['month']);
        $monthEnd = strtotime('+1 month', $monthStart) - 1;
        $now = time();

        DB::beginTransaction();
        try {
            // --- 0. 清理旧数据 ---
            $oldOrderIds = DB::table('daily_pw_order')
                ->where('top_depart_id', $topDepartId)
                ->where('order_time', '>=', $monthStart)
                ->where('order_time', '<=', $monthEnd)
                ->where('is_create', 1)
                ->where('del_time', 0)
                ->pluck('id');

            if ($oldOrderIds->isNotEmpty()) {
                DB::table('daily_pw_order')->whereIn('id', $oldOrderIds)->update(['del_time' => $now]);
                DB::table('daily_pw_order_details')->whereIn('main_id', $oldOrderIds)->update(['del_time' => $now]);
            }

            // --- 1. 基础数据加载 ---
            $monthlyOrder = DB::table('monthly_pw_order_details as d')
                ->join('monthly_pw_order as m', 'm.id', '=', 'd.main_id')
                ->where('m.month', $monthStart)->where('m.top_depart_id', $topDepartId)
                ->where('m.del_time', 0)->where('d.del_time', 0)
                ->select('d.*')->get();

            if ($monthlyOrder->isEmpty()) return [false, '未找到月度工时明细'];

            $empIds = $monthlyOrder->pluck('employee_id')->unique()->toArray();
            $empWorkRanges = DB::table('employee_work_range')->whereIn('employee_id', $empIds)->where('top_depart_id', $topDepartId)->get()->groupBy('employee_id');
            $standardWorkRanges = DB::table('work_range_details')->where('top_depart_id', $topDepartId)->where('del_time', 0)->get();

            $ruleSet = DB::table('rule_set_details as rd')->join('rule_set as r', 'r.id', '=', 'rd.main_id')
                ->where('r.month', $monthStart)->where('rd.type', RuleSetDetails::type_one)
                ->where('r.del_time', 0)->where('rd.del_time', 0)
                ->select('rd.*')->get()->groupBy('data_id');

            $allDays = DB::table('calendar_details')->where('month', $monthStart)->where('del_time', 0)->orderBy('time', 'asc')->get();
            $leaveOverData = DB::table('p_leave_over_order_details as d')->join('p_leave_over_order as m', 'd.main_id', '=', 'm.id')
                ->whereBetween('m.order_time', [$monthStart, $monthEnd])->where('m.del_time', 0)
                ->select('d.*', 'm.order_time', 'm.type as main_type')->get()->groupBy(['employee_id', 'order_time']);

            // --- 2. 核心分配逻辑：计算每天、每个项目、每个人的分钟数 ---
            $finalAlloc = [];
            foreach ($monthlyOrder as $mDetail) {
                $empId = $mDetail->employee_id;
                $empRules = $ruleSet->get($empId);
                if (!$empRules) continue;

                $empRemainingMin = (float)$mDetail->rd_total_hours * 60;
                if ($empRemainingMin <= 0) continue;

                foreach ($allDays as $dayInfo) {
                    if ($empRemainingMin <= 0) break;
                    $dayTs = $dayInfo->time;
                    $isWorkDay = ($dayInfo->is_work == CalendarDetails::TYPE_ONE);
                    $todaySpecials = data_get($leaveOverData, "$empId.$dayTs", collect());
                    $todayOvertimes = $todaySpecials->where('main_type', 2);

                    if (!$isWorkDay && $todayOvertimes->isEmpty()) continue;

                    // 计算当天可用总时长
                    $dayAvailableMin = 0;
                    if ($isWorkDay) {
                        $baseRanges = $empWorkRanges->has($empId) ? $empWorkRanges->get($empId) : $standardWorkRanges;
                        foreach ($baseRanges as $br) {
                            $brS = $br->start_time_hour * 60 + $br->start_time_min;
                            $brE = $br->end_time_hour * 60 + $br->end_time_min;
                            $avail = (float)$br->total_work_min;
                            foreach ($todaySpecials->where('main_type', 1) as $lv) {
                                $overlap = min($brE, ($lv->end_time_hour * 60 + $lv->end_time_min)) - max($brS, ($lv->start_time_hour * 60 + $lv->start_time_min));
                                if ($overlap > 0) $avail -= $overlap;
                            }
                            $dayAvailableMin += max(0, $avail);
                        }
                    }
                    foreach ($todayOvertimes as $ot) $dayAvailableMin += (float)$ot->total_min;

                    $canAllocToday = min($empRemainingMin, $dayAvailableMin);
                    if ($canAllocToday <= 0) continue;

                    foreach ($empRules as $rule) {
                        $rate = (float)$rule->rate / 100;
                        $projectMin = $canAllocToday * $rate;
                        if ($projectMin > 0) {
                            // 结果存入：[日期][项目][人员]
                            $finalAlloc[$dayTs][$rule->item_id][$empId] = $projectMin;
                        }
                    }
                    $empRemainingMin -= $canAllocToday;
                }
            }

            // --- 3. 生成单据：解决时间重叠的核心逻辑 ---
            $newOrderIds = [];
            // 为了解决重叠，我们需要按 [日期][人员] 来追踪时间池的消耗进度
            $dailyEmpTimePools = [];

            foreach ($finalAlloc as $dayTs => $projects) {
                foreach ($projects as $itemId => $employees) {
                    $mainId = DB::table('daily_pw_order')->insertGetId([
                        'code' => '', 'item_id' => $itemId, 'order_time' => $dayTs, 'top_depart_id' => $topDepartId,
                        'is_create' => 1, 'crt_id' => $user['id'], 'crt_time' => $now, 'upd_time' => $now,
                    ]);
                    $newOrderIds[] = ['id' => $mainId, 'time' => $dayTs];

                    foreach ($employees as $empId => $toAllocMin) {
                        // 如果该员工当天的池子还没构建，先构建一次
                        if (!isset($dailyEmpTimePools[$dayTs][$empId])) {
                            $dailyEmpTimePools[$dayTs][$empId] = $this->buildAvailablePool($empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData);
                        }

                        $tempRem = $toAllocMin;
                        // 指向该员工当天的可用池引用，这样处理完项目A，池子里的时间会自动被“消耗”
                        foreach ($dailyEmpTimePools[$dayTs][$empId] as &$p) {
                            if ($tempRem <= 0) break;

                            $pMax = $p['e'] - $p['s'];
                            if ($pMax <= 0) continue;

                            $take = min($tempRem, $pMax);
                            $realStart = $p['s'];
                            $realEnd = $p['s'] + $take;

                            DB::table('daily_pw_order_details')->insert([
                                'main_id' => $mainId, 'employee_id' => $empId, 'top_depart_id' => $topDepartId,
                                'start_time_hour' => floor($realStart / 60), 'start_time_min' => $realStart % 60,
                                'end_time_hour' => floor($realEnd / 60), 'end_time_min' => $realEnd % 60,
                                'total_work_min' => $take, 'crt_time' => $now, 'upd_time' => $now,
                            ]);

                            $tempRem -= $take;
                            // 重要：消耗掉这个时段的起始位置，确保下一个项目从这里开始
                            $p['s'] = $realEnd;
                        }
                    }
                }
            }

            // --- 4. 回填单号 ---
            if (empty($newOrderIds)) return [false, '未生成数据'];
            foreach ($newOrderIds as $item) {
                $code = $this->generateBillNo(['top_depart_id' => $topDepartId, 'type' => DailyPwOrder::Order_type, 'period' => date("Ym", $item['time'])]);
                DB::table('daily_pw_order')->where('id', $item['id'])->update(['code' => $code]);
            }
            DB::commit();
        } catch (\Exception $e) {
            DB::rollBack();
            return [false, '错误: ' . $e->getMessage() . ' 行: ' . $e->getLine()];
        }
        return [true, ''];
    }

    /**
     * 辅助函数：构建某人某天的初始可用时段池
     */
    private function buildAvailablePool($empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData)
    {
        $dayInfo = $allDays->where('time', $dayTs)->first();
        $todaySpecials = data_get($leaveOverData, "$empId.$dayTs", collect());
        $pool = [];

        if ($dayInfo && $dayInfo->is_work == CalendarDetails::TYPE_ONE) {
            $baseRanges = $empWorkRanges->has($empId) ? $empWorkRanges->get($empId) : $standardWorkRanges;
            foreach ($baseRanges as $br) {
                $currentS = $br->start_time_hour * 60 + $br->start_time_min;
                $eMin = $br->end_time_hour * 60 + $br->end_time_min;
                $sortedLeaves = $todaySpecials->where('main_type', 1)->sortBy('start_time_hour');

                foreach ($sortedLeaves as $lv) {
                    $lvS = $lv->start_time_hour * 60 + $lv->start_time_min;
                    $lvE = $lv->end_time_hour * 60 + $lv->end_time_min;
                    if ($lvS < $eMin && $lvE > $currentS) {
                        if ($lvS > $currentS) $pool[] = ['s' => $currentS, 'e' => $lvS];
                        $currentS = max($currentS, $lvE);
                    }
                }
                if ($currentS < $eMin) $pool[] = ['s' => $currentS, 'e' => $eMin];
            }
        }
        foreach ($todaySpecials->where('main_type', 2) as $ot) {
            $otS = $ot->start_time_hour * 60 + $ot->start_time_min;
            $pool[] = ['s' => $otS, 'e' => $otS + (float)$ot->total_min];
        }
        return $pool;
    }


    public function dailyPwOrderPreview($data, $user)
    {
        $topDepartId = $user['top_depart_id'];
        if (empty($data['month'])) return [false, '月份不能为空'];

        // 1. 前置校验 (保留你之前的校验逻辑)
        $monthStart = $this->changeDateToDate($data['month']);

        //归档
        list($status, $msg) = ArchiveService::isArchive($monthStart, $user);
        if(! $status) return [false, $msg];

        // 1. 检查是否存在月度工时明细
        $hasMonthlyOrder = DB::table('monthly_pw_order_details as d')
            ->join('monthly_pw_order as m', 'm.id', '=', 'd.main_id')
            ->where('m.month', $monthStart)
            ->where('m.top_depart_id', $topDepartId)
            ->where('m.del_time', 0)
            ->where('d.del_time', 0)
            ->exists();

        if (!$hasMonthlyOrder) return [false, '未找到该月份的月度工时明细，请先生成人员月度工时单'];

        // 2. 检查是否配置了工作日历
        $hasCalendar = DB::table('calendar_details')
            ->where('month', $monthStart)
            ->where('del_time', 0)
            ->exists();

        if (!$hasCalendar) return [false, '该月份工作日历未配置'];

        // 3. 检查是否配置了项目比例规则
        $hasRules = DB::table('rule_set as r')
            ->where('r.month', $monthStart)
            ->where('r.top_depart_id', $topDepartId)
            ->where('r.del_time', 0)
            ->exists();

        if (!$hasRules) return [false, '未找到该月份的规则配置单'];

        // 2. 调用核心计算逻辑 (抽取出的私有方法)
        $result = $this->calculateDailyAllocation($monthStart, $topDepartId, $user);

        if (!$result['status']) return [false, $result['msg']];

        // 3. 将结果存入临时表或直接返回
        // 建议增加一个 batch_id，防止多人操作冲突
        $batchId = uniqid('batch_');
        $previewData = $result['data'];

//        $total = 0;
//        foreach ($previewData as $value){
//            if($value['employee_id'] == 142 && $value['item_id'] == 122) $total += $value['total_work_min'];
//        }dd($total);
        return [true, [
            'batch_id' => $batchId,
            'list' => $previewData // 返回给前端展示
        ]];


    }

    /**
     * 核心分配逻辑：计算预览数据（确保全整数分钟）
     * @param int $monthStart 月初时间戳
     * @param int $topDepartId 顶级部门ID
     * @param array $user 用户信息
     * @return array
     */
    private function calculateDailyAllocation1($monthStart, $topDepartId, $user)
    {
        $monthEnd = strtotime('+1 month', $monthStart) - 1;
        $now = time();

        // --- 1. 基础数据加载 ---

        // 加载月度工时明细，并关联人员姓名
        $monthlyOrder = DB::table('monthly_pw_order_details as d')
            ->join('monthly_pw_order as m', 'm.id', '=', 'd.main_id')
            ->leftJoin('employee as e', 'e.id', '=', 'd.employee_id') // 关联人员表
            ->where('m.month', $monthStart)
            ->where('m.top_depart_id', $topDepartId)
            ->where('m.del_time', 0)
            ->where('d.del_time', 0)
            ->select('d.*', 'e.title as employee_title') // 获取人员姓名
            ->get();

        if ($monthlyOrder->isEmpty()) return ['status' => false, 'msg' => '未找到该月份的月度工时明细'];

        // 建立人员 ID -> 姓名的映射，方便后续取用
        $empNameMap = $monthlyOrder->pluck('employee_title', 'employee_id')->toArray();
        $empIds = array_keys($empNameMap);

        // 加载项目信息，用于获取项目名称
        // 假设项目表名为 items，请根据你实际的表名修改
        $itemIds = DB::table('rule_set_details as rd')
            ->join('rule_set as r', 'r.id', '=', 'rd.main_id')
            ->where('r.month', $monthStart)
            ->where('r.top_depart_id', $topDepartId)
            ->pluck('rd.item_id')->unique()->toArray();

        $itemMap = DB::table('item')
        ->whereIn('id', $itemIds)
            ->pluck('title', 'id')
            ->toArray();

        // 加载分配规则
        $ruleSet = DB::table('rule_set_details as rd')
            ->join('rule_set as r', 'r.id', '=', 'rd.main_id')
            ->where('r.month', $monthStart)
            ->where('rd.type', 1)
            ->where('r.del_time', 0)
            ->where('rd.del_time', 0)
            ->select('rd.*')
            ->get()
            ->groupBy('data_id');

        // 加载员工/标准班次、日历、请假加班数据 (逻辑同前)
        $empWorkRanges = DB::table('employee_work_range')
            ->whereIn('employee_id', $empIds)
            ->where('top_depart_id', $topDepartId)
            ->get()->groupBy('employee_id');
        $standardWorkRanges = DB::table('work_range_details')->where('top_depart_id', $topDepartId)
            ->where('del_time', 0)->get();
        $allDays = DB::table('calendar_details')->where('top_depart_id', $topDepartId)
            ->where('month', $monthStart)
            ->where('del_time', 0)
            ->orderBy('time', 'asc')
            ->get();
        $leaveOverData = DB::table('p_leave_over_order_details as d')->join('p_leave_over_order as m', 'd.main_id', '=', 'm.id')
            ->whereBetween('m.order_time', [$monthStart, $monthEnd])
            ->where('d.top_depart_id', $topDepartId)
            ->where('m.del_time', 0)
            ->select('d.*', 'm.order_time', 'm.type as main_type')
            ->get()->groupBy(['employee_id', 'order_time']);

        // --- 2. 阶段一：计算每个人每天在每个项目上应分配的整数分钟数 ---
        $finalAlloc = [];
        foreach ($monthlyOrder as $mDetail) {
            $empId = $mDetail->employee_id;
            $empRules = $ruleSet->get($empId);
            if (!$empRules) continue;

            $empRemainingMin = (int)round((float)$mDetail->rd_total_hours * 60);
            if ($empRemainingMin <= 0) continue;

            foreach ($allDays as $dayInfo) {
                if ($empRemainingMin <= 0) break;
                $dayTs = $dayInfo->time;
                $tempPool = $this->buildAvailablePool($empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData);
                $dayAvailableMin = 0;
                foreach ($tempPool as $p) { $dayAvailableMin += (int)($p['e'] - $p['s']); }
                if ($dayAvailableMin <= 0) continue;

                $canAllocToday = min($empRemainingMin, $dayAvailableMin);
                $allocatedInDay = 0;
                $ruleCount = count($empRules);

                foreach ($empRules as $index => $rule) {
                    $rate = (float)$rule->rate / 100;
                    if ($index === $ruleCount - 1) {
                        $projectMin = $canAllocToday - $allocatedInDay;
                    } else {
                        $projectMin = (int)round($canAllocToday * $rate);
                    }
                    if ($projectMin > 0) {
                        $finalAlloc[$dayTs][$rule->item_id][$empId] = $projectMin;
                        $allocatedInDay += $projectMin;
                    }
                }
                $empRemainingMin -= $canAllocToday;
            }
        }

        // --- 3. 阶段二：打散到具体时间点并生成预览行 ---
        $previewList = [];
        $dailyEmpTimePools = [];
        $tempMainIdCounter = 1;

        foreach ($finalAlloc as $dayTs => $projects) {
            foreach ($projects as $itemId => $employees) {
                $currentTempMainId = $tempMainIdCounter++;

                // 获取项目名称
                $itemTitle = $itemMap[$itemId] ?? '未知项目';

                foreach ($employees as $empId => $toAllocMin) {
                    if (!isset($dailyEmpTimePools[$dayTs][$empId])) {
                        $dailyEmpTimePools[$dayTs][$empId] = $this->buildAvailablePool($empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData);
                    }

                    $tempRem = (int)$toAllocMin;
                    foreach ($dailyEmpTimePools[$dayTs][$empId] as &$p) {
                        if ($tempRem <= 0) break;
                        $pMax = (int)($p['e'] - $p['s']);
                        if ($pMax <= 0) continue;

                        $take = min($tempRem, $pMax);
                        $realStart = (int)$p['s'];
                        $realEnd = $realStart + $take;

                        // 写入带 Title 的结果
                        $previewList[] = [
                            'temp_main_id'    => $currentTempMainId,
                            'order_time'      => date('Y-m-d', $dayTs),
                            'order_timestamp' => $dayTs,
                            'item_id'         => $itemId,
                            'item_title'      => $itemTitle, // 项目名称
                            'employee_id'     => $empId,
                            'employee_title'  => $empNameMap[$empId] ?? '未知人员', // 人员姓名
                            'start_time'      => sprintf('%02d:%02d', floor($realStart / 60), $realStart % 60),
                            'end_time'        => sprintf('%02d:%02d', floor($realEnd / 60), $realEnd % 60),
                            'start_hour'      => (int)floor($realStart / 60),
                            'start_min'       => (int)($realStart % 60),
                            'end_hour'        => (int)floor($realEnd / 60),
                            'end_min'         => (int)($realEnd % 60),
                            'total_work_min'  => $take,
                        ];

                        $tempRem -= $take;
                        $p['s'] = $realEnd;
                    }
                }
            }
        }

        return ['status' => true, 'data' => $previewList];
    }

    private function calculateDailyAllocation($monthStart, $topDepartId, $user)
    {
        $monthEnd = strtotime('+1 month', $monthStart) - 1;
        $step = 5; // 尽量 5 分钟对齐；明细允许个别非整 5

        // --- 1. 基础数据加载 ---
        $monthlyOrder = DB::table('monthly_pw_order_details as d')
            ->join('monthly_pw_order as m', 'm.id', '=', 'd.main_id')
            ->leftJoin('employee as e', 'e.id', '=', 'd.employee_id')
            ->where('m.month', $monthStart)->where('m.top_depart_id', $topDepartId)
            ->where('m.del_time', 0)->where('d.del_time', 0)
            ->select('d.*', 'e.title as employee_title')->get();

        if ($monthlyOrder->isEmpty()) return ['status' => false, 'msg' => '未找到明细'];

        $empNameMap = $monthlyOrder->pluck('employee_title', 'employee_id')->toArray();
        $empIds = array_keys($empNameMap);
        $itemIds = DB::table('rule_set_details as rd')->join('rule_set as r', 'r.id', '=', 'rd.main_id')
            ->where('r.month', $monthStart)->where('r.top_depart_id', $topDepartId)->pluck('rd.item_id')->unique()->toArray();
        $itemMap = DB::table('item')->whereIn('id', $itemIds)->pluck('title', 'id')->toArray();
        $ruleSet = DB::table('rule_set_details as rd')->join('rule_set as r', 'r.id', '=', 'rd.main_id')
            ->where('r.month', $monthStart)->where('rd.type', 1)->where('r.del_time', 0)->where('rd.del_time', 0)
            ->select('rd.*')->get()->groupBy('data_id');

        $empWorkRanges = DB::table('employee_work_range')->whereIn('employee_id', $empIds)->where('top_depart_id', $topDepartId)->get()->groupBy('employee_id');
        $standardWorkRanges = DB::table('work_range_details')->where('top_depart_id', $topDepartId)->where('del_time', 0)->get();
        $allDays = DB::table('calendar_details')->where('top_depart_id', $topDepartId)->where('month', $monthStart)->where('del_time', 0)->orderBy('time', 'asc')->get();
        $leaveOverData = DB::table('p_leave_over_order_details as d')->join('p_leave_over_order as m', 'd.main_id', '=', 'm.id')
            ->whereBetween('m.order_time', [$monthStart, $monthEnd])->where('d.top_depart_id', $topDepartId)->where('m.del_time', 0)
            ->select('d.*', 'm.order_time', 'm.type as main_type')->get()->groupBy(['employee_id', 'order_time']);

        // --- 2. 阶段一：先锁定「每人每项目月目标」= 最大余数法(月总×比例)，再往工作日摊 ---
        // 5 分钟对齐产生的零头，只加回「同一个人 + 同一个项目」的明细，不甩给别的项目
        $finalAlloc = [];
        $empProjectTargets = []; // [empId][itemId] => 月目标分钟
        $dayBalance = [];

        foreach ($monthlyOrder as $mDetail) {
            $empId = $mDetail->employee_id;
            $empRules = $ruleSet->get($empId);
            if (!$empRules || $empRules->isEmpty()) continue;

            $empTotalMin = (int)round((float)$mDetail->rd_total_hours * 60);
            if ($empTotalMin <= 0) continue;

            // 2.1 按比例拆月目标（最大余数法，保证加总=月总，且最接近「月总×比例」）
            $projTarget = $this->buildProjectMonthTargetsByRate($empRules, $empTotalMin);
            if (empty($projTarget)) continue;
            $empProjectTargets[$empId] = $projTarget;

            $projRem = $projTarget;
            $empRemainingMin = $empTotalMin;

            // 2.2 预计算有容量的工作日
            $dayCaps = [];
            foreach ($allDays as $dayInfo) {
                $dayTs = $dayInfo->time;
                $tempPool = $this->buildAvailablePool($empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData);
                $dayCapacity = 0;
                foreach ($tempPool as $p) {
                    $dayCapacity += (int)($p['e'] - $p['s']);
                }
                if ($dayCapacity > 0) {
                    $dayCaps[$dayTs] = $dayCapacity;
                }
            }
            if (empty($dayCaps)) continue;

            $dayTsList = array_keys($dayCaps);
            $dayIndex = 0;
            $dayCount = count($dayTsList);

            foreach ($dayTsList as $dayTs) {
                if ($empRemainingMin <= 0) break;
                if (array_sum($projRem) <= 0) break;

                $dayCapacity = $dayCaps[$dayTs];
                $theoryAlloc = min($empRemainingMin, $dayCapacity);
                $isLastDay = ($dayIndex === $dayCount - 1) || ($theoryAlloc >= $empRemainingMin);

                if (!$isLastDay) {
                    $currentWithBalance = $theoryAlloc + ($dayBalance[$empId] ?? 0);
                    $roundedAlloc = (int)round($currentWithBalance / $step) * $step;
                    $canAllocToday = min($roundedAlloc, $dayCapacity, $empRemainingMin);
                    if ($canAllocToday <= 0 && $theoryAlloc > 0) {
                        $canAllocToday = min($theoryAlloc, $empRemainingMin);
                    }
                    $dayBalance[$empId] = $currentWithBalance - $canAllocToday;
                } else {
                    $canAllocToday = min($empRemainingMin, $dayCapacity);
                    $dayBalance[$empId] = 0;
                }

                if ($canAllocToday <= 0) {
                    $dayIndex++;
                    continue;
                }

                $dayParts = $this->splitMinutesByRemaining($canAllocToday, $projRem, $step, $isLastDay);
                foreach ($dayParts as $itemId => $projectMin) {
                    if ($projectMin <= 0) continue;
                    $finalAlloc[$dayTs][$itemId][$empId] = ($finalAlloc[$dayTs][$itemId][$empId] ?? 0) + $projectMin;
                    $projRem[$itemId] = max(0, ($projRem[$itemId] ?? 0) - $projectMin);
                }

                $empRemainingMin -= $canAllocToday;
                $dayIndex++;
            }

            // 2.3 仍有项目剩余则塞进尚有空闲的天（仍归原项目）
            $stuck = array_sum($projRem);
            if ($stuck > 0) {
                foreach ($dayCaps as $dayTs => $dayCapacity) {
                    if ($stuck <= 0) break;
                    $used = 0;
                    if (!empty($finalAlloc[$dayTs])) {
                        foreach ($finalAlloc[$dayTs] as $emps) {
                            $used += (int)($emps[$empId] ?? 0);
                        }
                    }
                    $free = $dayCapacity - $used;
                    if ($free <= 0) continue;

                    foreach ($projRem as $itemId => $rem) {
                        if ($rem <= 0 || $free <= 0) continue;
                        $take = min($rem, $free);
                        $finalAlloc[$dayTs][$itemId][$empId] = ($finalAlloc[$dayTs][$itemId][$empId] ?? 0) + $take;
                        $projRem[$itemId] -= $take;
                        $free -= $take;
                        $stuck -= $take;
                    }
                }
            }
        }

        // --- 3. 阶段二：打散到时间点；尽量 5 对齐，零头加回同一人同一项目的某条明细 ---
        $previewList = [];
        $dailyEmpTimePools = [];
        $tempMainIdCounter = 1;

        foreach ($finalAlloc as $dayTs => $projects) {
            foreach ($projects as $itemId => $employees) {
                $itemTitle = $itemMap[$itemId] ?? '未知项目';
                foreach ($employees as $empId => $toAllocMin) {
                    $currentTempMainId = $tempMainIdCounter++;

                    if (!isset($dailyEmpTimePools[$dayTs][$empId])) {
                        $dailyEmpTimePools[$dayTs][$empId] = $this->buildAvailablePool(
                            $empId, $dayTs, $allDays, $empWorkRanges, $standardWorkRanges, $leaveOverData
                        );
                    }

                    $tempRem = (int)$toAllocMin;

                    foreach ($dailyEmpTimePools[$dayTs][$empId] as &$p) {
                        if ($tempRem <= 0) break;

                        $rawStart = (int)$p['s'];
                        $alignedStart = (int)ceil($rawStart / $step) * $step;
                        if ($alignedStart < $p['e'] && ($p['e'] - $alignedStart) >= min($tempRem, 1)) {
                            $realStart = $alignedStart;
                        } else {
                            $realStart = $rawStart;
                        }
                        if ($realStart >= $p['e']) continue;

                        $pMax = (int)($p['e'] - $realStart);
                        $take = min($tempRem, $pMax);
                        // 先尽量按 5 切开；零头必须加到「后面有空档」的同人同项目明细上，避免保存时时间冲突
                        if ($take >= $step && $tempRem > $step) {
                            $alignedTake = (int)floor($take / $step) * $step;
                            if ($take >= $tempRem) {
                                $blocks = (int)floor($tempRem / $step) * $step;
                                $odd = $tempRem - $blocks;
                                $take = $blocks > 0 ? $blocks : $tempRem;
                                if ($blocks > 0 && $odd > 0) {
                                    $realEnd = $realStart + $take;
                                    // 零头只能加在当前池子剩余空间内，且不与已有明细冲突
                                    $roomInPool = (int)$p['e'] - $realEnd;
                                    $oddToAdd = min($odd, max(0, $roomInPool));
                                    $previewList[] = $this->makePreviewRow(
                                        $currentTempMainId, $dayTs, $itemId, $itemTitle, $empId,
                                        $empNameMap[$empId] ?? '未知人员', $realStart, $realEnd, $take
                                    );
                                    $rowIdx = count($previewList) - 1;
                                    $tempRem -= $take;
                                    $p['s'] = $realEnd;
                                    if ($oddToAdd > 0 && $this->safeBumpPreviewRowMinutes($previewList, $rowIdx, $oddToAdd)) {
                                        $tempRem -= $oddToAdd;
                                        $p['s'] = $realEnd + $oddToAdd;
                                    }
                                    // 加不进去的 odd 留给后面 safe 回填
                                    continue;
                                }
                            } elseif ($alignedTake > 0) {
                                $take = $alignedTake;
                            }
                        }

                        $realEnd = $realStart + $take;
                        $previewList[] = $this->makePreviewRow(
                            $currentTempMainId, $dayTs, $itemId, $itemTitle, $empId,
                            $empNameMap[$empId] ?? '未知人员', $realStart, $realEnd, $take
                        );

                        $tempRem -= $take;
                        $p['s'] = $realEnd;
                    }
                    unset($p);

                    // 剩余分钟：找同人同项目、延长后不冲突的明细往后加
                    if ($tempRem > 0) {
                        $left = $this->safeBumpMinutesOntoEmpItem(
                            $previewList,
                            (int)$empId,
                            (int)$itemId,
                            $tempRem,
                            date('Y-m-d', $dayTs)
                        );
                        if ($left > 0) {
                            // 当天加不下，再在其它日期的同人同项目明细上找空档
                            $left = $this->safeBumpMinutesOntoEmpItem(
                                $previewList,
                                (int)$empId,
                                (int)$itemId,
                                $left,
                                null
                            );
                        }
                        // 仍剩：在当天找同人空档新开一条短明细（仍属本项目）
                        if ($left > 0) {
                            $placed = $this->insertRemainderRowInFreeGap(
                                $previewList,
                                $currentTempMainId,
                                $dayTs,
                                $itemId,
                                $itemTitle,
                                $empId,
                                $empNameMap[$empId] ?? '未知人员',
                                $left
                            );
                            if ($placed) {
                                $left = 0;
                            }
                        }
                        $tempRem = $left;
                    }
                }
            }
        }

        // 3.1 最终校验：每人每项目合计必须等于月目标；差额安全加回（不制造重叠）
        $previewList = $this->reconcilePreviewToProjectTargets($previewList, $empProjectTargets);

        return ['status' => true, 'data' => $previewList];
    }

    /**
     * 按分摊比例生成每人各项目月目标分钟（最大余数法）
     * 保证：sum(项目) = 月总；各项目尽可能等于 round/最接近 月总×比例
     */
    private function buildProjectMonthTargetsByRate($empRules, $empTotalMin)
    {
        $rateByItem = [];
        foreach ($empRules as $rule) {
            $itemId = (int)$rule->item_id;
            $rateByItem[$itemId] = ($rateByItem[$itemId] ?? 0) + (float)$rule->rate;
        }
        if (empty($rateByItem) || $empTotalMin <= 0) {
            return [];
        }

        $rateSum = array_sum($rateByItem);
        if ($rateSum <= 0) {
            return [];
        }

        $targets = [];
        $parts = [];
        $used = 0;
        foreach ($rateByItem as $itemId => $rate) {
            $ideal = $empTotalMin * ($rate / $rateSum);
            $floor = (int)floor($ideal + 1e-8);
            $targets[$itemId] = $floor;
            $used += $floor;
            $parts[] = [
                'item_id' => $itemId,
                'frac' => $ideal - $floor,
                'rate' => $rate,
            ];
        }

        $left = $empTotalMin - $used;
        usort($parts, function ($a, $b) {
            if ($a['frac'] == $b['frac']) {
                return $b['rate'] <=> $a['rate'];
            }
            return $b['frac'] <=> $a['frac'];
        });
        foreach ($parts as $row) {
            if ($left <= 0) break;
            $targets[$row['item_id']]++;
            $left--;
        }

        return $targets;
    }

    private function makePreviewRow($tempMainId, $dayTs, $itemId, $itemTitle, $empId, $empTitle, $realStart, $realEnd, $take)
    {
        return [
            'temp_main_id'    => $tempMainId,
            'order_time'      => date('Y-m-d', $dayTs),
            'order_timestamp' => $dayTs,
            'item_id'         => $itemId,
            'item_title'      => $itemTitle,
            'employee_id'     => $empId,
            'employee_title'  => $empTitle,
            'start_time'      => sprintf('%02d:%02d', floor($realStart / 60), $realStart % 60),
            'end_time'        => sprintf('%02d:%02d', floor($realEnd / 60), $realEnd % 60),
            'start_hour'      => (int)floor($realStart / 60),
            'start_min'       => (int)($realStart % 60),
            'end_hour'        => (int)floor($realEnd / 60),
            'end_min'         => (int)($realEnd % 60),
            'total_work_min'  => $take,
        ];
    }

    private function rowStartMin(array $row)
    {
        return ((int)$row['start_hour']) * 60 + (int)$row['start_min'];
    }

    private function rowEndMin(array $row)
    {
        return ((int)$row['end_hour']) * 60 + (int)$row['end_min'];
    }

    /**
     * 指定下标延长 end，不校验冲突（调用方需先确保安全）
     */
    private function bumpPreviewRowMinutes(array &$previewList, $index, $addMin)
    {
        if ($addMin == 0 || !isset($previewList[$index])) {
            return;
        }
        $row = &$previewList[$index];
        $end = $this->rowEndMin($row) + (int)$addMin;
        if ($end < $this->rowStartMin($row)) {
            $end = $this->rowStartMin($row);
        }
        $row['end_hour'] = (int)floor($end / 60);
        $row['end_min'] = (int)($end % 60);
        $row['end_time'] = sprintf('%02d:%02d', $row['end_hour'], $row['end_min']);
        $row['total_work_min'] = max(0, $end - $this->rowStartMin($row));
        unset($row);
    }

    /**
     * 判断把 index 行结束时间延长 addMin 后，是否与同人同日其它明细冲突
     */
    private function canBumpRowWithoutOverlap(array $previewList, $index, $addMin)
    {
        if ($addMin <= 0 || !isset($previewList[$index])) {
            return false;
        }
        $row = $previewList[$index];
        $empId = (int)$row['employee_id'];
        $dateStr = $row['order_time'];
        $newS = $this->rowStartMin($row);
        $newE = $this->rowEndMin($row) + (int)$addMin;
        if ($newE <= $newS) {
            return false;
        }

        foreach ($previewList as $i => $other) {
            if ($i === $index) {
                continue;
            }
            if ((int)$other['employee_id'] !== $empId) {
                continue;
            }
            if ($other['order_time'] !== $dateStr) {
                continue;
            }
            $os = $this->rowStartMin($other);
            $oe = $this->rowEndMin($other);
            if ($newS < $oe && $newE > $os) {
                return false;
            }
        }
        return true;
    }

    /**
     * 安全延长指定行（通过冲突检查才改）
     */
    private function safeBumpPreviewRowMinutes(array &$previewList, $index, $addMin)
    {
        if (!$this->canBumpRowWithoutOverlap($previewList, $index, $addMin)) {
            return false;
        }
        $this->bumpPreviewRowMinutes($previewList, $index, $addMin);
        return true;
    }

    /**
     * 把分钟安全加到「同人 + 同项目」某条明细后面（优先指定日期）
     * @return int 未能加上的剩余分钟
     */
    private function safeBumpMinutesOntoEmpItem(array &$previewList, $empId, $itemId, $addMin, $preferDate = null)
    {
        $addMin = (int)$addMin;
        if ($addMin <= 0) {
            return 0;
        }

        // 候选：同人同项目，按「结束后空档大小」优先；同日优先
        $candidates = [];
        foreach ($previewList as $i => $row) {
            if ((int)$row['employee_id'] !== (int)$empId) {
                continue;
            }
            if ((int)$row['item_id'] !== (int)$itemId) {
                continue;
            }
            if ($preferDate !== null && $row['order_time'] !== $preferDate) {
                continue;
            }
            $gap = $this->gapAfterRow($previewList, $i);
            if ($gap <= 0) {
                continue;
            }
            $candidates[] = [
                'index' => $i,
                'gap' => $gap,
                'end' => $this->rowEndMin($row),
                'same_day' => 1,
            ];
        }

        // 指定日没有空档时，扩大到其它日期
        if (empty($candidates) && $preferDate !== null) {
            return $this->safeBumpMinutesOntoEmpItem($previewList, $empId, $itemId, $addMin, null);
        }

        usort($candidates, function ($a, $b) {
            if ($a['gap'] == $b['gap']) {
                return $b['end'] <=> $a['end'];
            }
            return $b['gap'] <=> $a['gap'];
        });

        $left = $addMin;
        foreach ($candidates as $c) {
            if ($left <= 0) {
                break;
            }
            $give = min($left, $c['gap']);
            // 再确认一次（可能前面已经 bump 过改变了空隙）
            $gapNow = $this->gapAfterRow($previewList, $c['index']);
            $give = min($give, $gapNow);
            if ($give <= 0) {
                continue;
            }
            if ($this->safeBumpPreviewRowMinutes($previewList, $c['index'], $give)) {
                $left -= $give;
            }
        }

        return max(0, $left);
    }

    /**
     * 某条明细结束后，到同人同日下一段开始之间的空档分钟数
     */
    private function gapAfterRow(array $previewList, $index)
    {
        if (!isset($previewList[$index])) {
            return 0;
        }
        $row = $previewList[$index];
        $empId = (int)$row['employee_id'];
        $dateStr = $row['order_time'];
        $end = $this->rowEndMin($row);

        $nextStart = null;
        foreach ($previewList as $i => $other) {
            if ($i === $index) {
                continue;
            }
            if ((int)$other['employee_id'] !== $empId) {
                continue;
            }
            if ($other['order_time'] !== $dateStr) {
                continue;
            }
            $os = $this->rowStartMin($other);
            if ($os >= $end) {
                if ($nextStart === null || $os < $nextStart) {
                    $nextStart = $os;
                }
            }
        }

        // 没有下一段：最多延到当天 24:00，避免无限延长
        if ($nextStart === null) {
            $nextStart = 24 * 60;
        }
        return max(0, $nextStart - $end);
    }

    /**
     * 在同人当天已有时间线的空隙中，插入一条余数明细（仍属本项目）
     */
    private function insertRemainderRowInFreeGap(
        array &$previewList,
        $tempMainId,
        $dayTs,
        $itemId,
        $itemTitle,
        $empId,
        $empTitle,
        $needMin
    ) {
        $needMin = (int)$needMin;
        if ($needMin <= 0) {
            return false;
        }
        $dateStr = date('Y-m-d', $dayTs);

        // 收集当天该人所有区间
        $intervals = [];
        foreach ($previewList as $row) {
            if ((int)$row['employee_id'] !== (int)$empId) {
                continue;
            }
            if ($row['order_time'] !== $dateStr) {
                continue;
            }
            $intervals[] = ['s' => $this->rowStartMin($row), 'e' => $this->rowEndMin($row)];
        }
        usort($intervals, function ($a, $b) {
            return $a['s'] <=> $b['s'];
        });

        // 合并后找空隙
        $cursor = 0;
        $dayEnd = 24 * 60;
        foreach ($intervals as $iv) {
            if ($iv['s'] > $cursor) {
                $gap = $iv['s'] - $cursor;
                if ($gap >= $needMin) {
                    $previewList[] = $this->makePreviewRow(
                        $tempMainId, $dayTs, $itemId, $itemTitle, $empId, $empTitle,
                        $cursor, $cursor + $needMin, $needMin
                    );
                    return true;
                }
            }
            $cursor = max($cursor, $iv['e']);
        }
        if ($dayEnd - $cursor >= $needMin) {
            $previewList[] = $this->makePreviewRow(
                $tempMainId, $dayTs, $itemId, $itemTitle, $empId, $empTitle,
                $cursor, $cursor + $needMin, $needMin
            );
            return true;
        }
        return false;
    }

    /**
     * 最终对齐：每人每项目明细合计必须等于月目标；差额安全加回（不制造重叠）
     */
    private function reconcilePreviewToProjectTargets(array $previewList, array $empProjectTargets)
    {
        if (empty($empProjectTargets) || empty($previewList)) {
            return $previewList;
        }

        $actual = [];
        foreach ($previewList as $row) {
            $empId = (int)$row['employee_id'];
            $itemId = (int)$row['item_id'];
            $actual[$empId][$itemId] = ($actual[$empId][$itemId] ?? 0) + (int)$row['total_work_min'];
        }

        foreach ($empProjectTargets as $empId => $items) {
            foreach ($items as $itemId => $target) {
                $got = (int)($actual[$empId][$itemId] ?? 0);
                $diff = (int)$target - $got;
                if ($diff === 0) {
                    continue;
                }
                if ($diff > 0) {
                    $left = $this->safeBumpMinutesOntoEmpItem($previewList, $empId, $itemId, $diff, null);
                    // 仍缺：按天找空档插入
                    if ($left > 0) {
                        $dates = [];
                        foreach ($previewList as $row) {
                            if ((int)$row['employee_id'] === (int)$empId) {
                                $dates[$row['order_time']] = $row['order_timestamp'] ?? strtotime($row['order_time']);
                            }
                        }
                        foreach ($dates as $dateStr => $ts) {
                            if ($left <= 0) {
                                break;
                            }
                            $itemTitle = '';
                            foreach ($previewList as $row) {
                                if ((int)$row['employee_id'] === (int)$empId && (int)$row['item_id'] === (int)$itemId) {
                                    $itemTitle = $row['item_title'];
                                    break;
                                }
                            }
                            $empTitle = '';
                            foreach ($previewList as $row) {
                                if ((int)$row['employee_id'] === (int)$empId) {
                                    $empTitle = $row['employee_title'];
                                    break;
                                }
                            }
                            $before = $left;
                            if ($this->insertRemainderRowInFreeGap(
                                $previewList,
                                'reconcile_' . $empId . '_' . $itemId,
                                (int)$ts,
                                $itemId,
                                $itemTitle ?: '未知项目',
                                $empId,
                                $empTitle ?: '未知人员',
                                $left
                            )) {
                                $left = 0;
                            }
                            // 插不进整天 needMin，尝试拆小：逐分钟插太慢；改为能插多少插多少
                            if ($left > 0) {
                                for ($n = $left; $n >= 1; $n--) {
                                    if ($this->insertRemainderRowInFreeGap(
                                        $previewList,
                                        'reconcile_' . $empId . '_' . $itemId,
                                        (int)$ts,
                                        $itemId,
                                        $itemTitle ?: '未知项目',
                                        $empId,
                                        $empTitle ?: '未知人员',
                                        $n
                                    )) {
                                        $left -= $n;
                                        break;
                                    }
                                }
                            }
                            unset($before);
                        }
                    }
                } elseif ($diff < 0) {
                    // 多了：从有空可缩的明细尾部扣（不制造 start>=end）
                    $needCut = -$diff;
                    for ($i = count($previewList) - 1; $i >= 0 && $needCut > 0; $i--) {
                        $row = $previewList[$i];
                        if ((int)$row['employee_id'] !== (int)$empId) {
                            continue;
                        }
                        if ((int)$row['item_id'] !== (int)$itemId) {
                            continue;
                        }
                        $len = (int)$row['total_work_min'];
                        if ($len <= 1) {
                            continue;
                        }
                        $cut = min($needCut, $len - 1);
                        $this->bumpPreviewRowMinutes($previewList, $i, -$cut);
                        $needCut -= $cut;
                    }
                }
            }
        }

        return $previewList;
    }

    /**
     * 按各项目剩余月目标，把当天额度拆开（最大余数法）
     * - 非最后一天：尽量按 5 分钟块分配
     * - 当天 1~4 分钟零头：补给「仍有剩余目标」的项目自身
     *
     * @param int $dayBudget 当天可分配总分钟
     * @param array $projRem [item_id => 剩余目标分钟]
     * @param int $step
     * @param bool $forceExact 是否强制精确分完（最后一天）
     * @return array [item_id => 当天分配分钟]
     */
    private function splitMinutesByRemaining($dayBudget, array $projRem, $step = 5, $forceExact = false)
    {
        $active = [];
        foreach ($projRem as $itemId => $rem) {
            if ($rem > 0) {
                $active[(int)$itemId] = (int)$rem;
            }
        }
        if (empty($active) || $dayBudget <= 0) {
            return [];
        }

        $totalRem = array_sum($active);
        $dayBudget = min($dayBudget, $totalRem);
        $result = array_fill_keys(array_keys($active), 0);

        if ($forceExact || $dayBudget < $step) {
            $order = [];
            $used = 0;
            foreach ($active as $itemId => $rem) {
                $ideal = $dayBudget * $rem / $totalRem;
                $base = (int)floor($ideal);
                $base = min($base, $rem);
                $result[$itemId] = $base;
                $used += $base;
                $order[] = [
                    'item_id' => $itemId,
                    'frac' => $ideal - $base,
                    'rem' => $rem - $base,
                ];
            }
            usort($order, function ($a, $b) {
                if ($a['frac'] == $b['frac']) {
                    return $b['rem'] <=> $a['rem'];
                }
                return $b['frac'] <=> $a['frac'];
            });
            $left = $dayBudget - $used;
            foreach ($order as $row) {
                if ($left <= 0) break;
                if ($row['rem'] <= 0) continue;
                $give = min($left, $row['rem']);
                $result[$row['item_id']] += $give;
                $left -= $give;
            }
            return array_filter($result);
        }

        $blockBudget = (int)floor($dayBudget / $step) * $step;
        if ($blockBudget <= 0) {
            return $this->splitMinutesByRemaining($dayBudget, $active, $step, true);
        }

        $blocks = (int)($blockBudget / $step);
        $order = [];
        $usedBlocks = 0;
        foreach ($active as $itemId => $rem) {
            $maxBlocks = (int)floor($rem / $step);
            $idealBlocks = $blocks * $rem / $totalRem;
            $base = (int)floor($idealBlocks);
            $base = min($base, $maxBlocks);
            $result[$itemId] = $base * $step;
            $usedBlocks += $base;
            $order[] = [
                'item_id' => $itemId,
                'frac' => $idealBlocks - $base,
                'rem_blocks' => $maxBlocks - $base,
                'rem' => $rem,
            ];
        }
        usort($order, function ($a, $b) {
            if ($a['frac'] == $b['frac']) {
                return $b['rem_blocks'] <=> $a['rem_blocks'];
            }
            return $b['frac'] <=> $a['frac'];
        });
        $leftBlocks = $blocks - $usedBlocks;
        foreach ($order as $row) {
            if ($leftBlocks <= 0) break;
            if ($row['rem_blocks'] <= 0) continue;
            $result[$row['item_id']] += $step;
            $leftBlocks--;
        }

        // 当天 1~4 分钟零头：按剩余目标最大余数补给对应项目（该人该项目自己的零头）
        $odd = $dayBudget - $blockBudget;
        if ($odd > 0) {
            $oddParts = $this->splitMinutesByRemaining($odd, $active, $step, true);
            foreach ($oddParts as $itemId => $mins) {
                $already = $result[$itemId] ?? 0;
                $cap = $active[$itemId] - $already;
                if ($cap <= 0) continue;
                $result[$itemId] = $already + min($mins, $cap);
            }
        }

        return array_filter($result);
    }

    public function dailyPwOrderSave($data, $user)
    {
        $list = $data['list'] ?? [];
        if (empty($list)) return [false, '没有可保存的数据'];

        $topDepartId = $user['top_depart_id'];
        $month = $data['month'];
        $monthStart = $this->changeDateToDate($month);

        //归档
        list($status, $msg) = ArchiveService::isArchive($monthStart, $user);
        if(! $status) return [false, $msg];

        $now = time();

        // 1. 预加载员工名称映射 (使用 title 字段)
        $empIds = collect($list)->pluck('employee_id')->unique()->toArray();
        $empMap = DB::table('employee')->whereIn('id', $empIds)->pluck('title', 'id')->toArray();

        // --- 2. 重新分组并记录行号 ---
        $groupedByOrder = [];
        foreach ($list as $index => $item) {
            $item['_line'] = $index + 1; // 记录原始行号（从1开始）
            // 以日期字符串和项目ID作为分组 Key
            $groupKey = $item['order_time'] . '_' . $item['item_id'];
            $groupedByOrder[$groupKey][] = $item;
        }

        // 冲突校验器容器：记录 [员工ID][日期字符串] 下已占用的时间段
        $empTimeline = [];

        DB::beginTransaction();
        try {
            // A. 清理该月份旧数据
            $monthEnd = strtotime('+1 month', $monthStart) - 1;

            $oldOrderIds = DB::table('daily_pw_order')
                ->where('top_depart_id', $topDepartId)
                ->whereBetween('order_time', [$monthStart, $monthEnd])
                ->where('del_time', 0)
                ->pluck('id');

            if ($oldOrderIds->isNotEmpty()) {
                DB::table('daily_pw_order')->whereIn('id', $oldOrderIds)->update(['del_time' => $now]);
                DB::table('daily_pw_order_details')->whereIn('main_id', $oldOrderIds)->update(['del_time' => $now]);
            }

            // B. 遍历重组后的分组写入
            foreach ($groupedByOrder as $details) {
                $first = $details[0];
                // 【修正】统一将前端日期字符串转为时间戳入库
                $orderTimestamp = strtotime($first['order_time']);
                $itemId = $first['item_id'];

                // 写入主表
                $mainId = DB::table('daily_pw_order')->insertGetId([
                    'code'          => '',
                    'item_id'       => $itemId,
                    'order_time'    => $orderTimestamp,
                    'top_depart_id' => $topDepartId,
                    'is_create'     => 1,
                    'crt_id'        => $user['id'],
                    'crt_time'      => $now,
                ]);

                $insertDetails = [];
                foreach ($details as $d) {
                    $rowNum = $d['_line'];
                    $empId = $d['employee_id'];
                    $empName = $empMap[$empId] ?? "人员(ID:{$empId})";

                    // --- 新增：月份一致性校验 ---
                    // 校验这行数据的日期是否属于当前保存的月份
                    if (date("Y-m", strtotime($d['order_time'])) !== $month) {
                        return [false, "第 {$rowNum} 行：人员[{$empName}]的日期[{$d['order_time']}]不属于保存月份[{$month}]"];
                    }

                    // 【修正】强制由后端计算分钟数
                    $s = (int)$d['start_hour'] * 60 + (int)$d['start_min'];
                    $e = (int)$d['end_hour'] * 60 + (int)$d['end_min'];
                    $calcTotalMin = $e - $s;

                    // 校验1：逻辑合法性
                    if ($calcTotalMin <= 0) {
                        return [false, "第 {$rowNum} 行：人员[{$empName}]在[{$d['order_time']}]的时间段无效：结束时间必须晚于开始时间"];
                    }

                    // 校验2：跨单据时间重叠校验
                    $dateStr = $d['order_time'];
                    if (isset($empTimeline[$empId][$dateStr])) {
                        foreach ($empTimeline[$empId][$dateStr] as $exist) {
                            if ($s < $exist['e'] && $e > $exist['s']) {
                                return [false, "第 {$rowNum} 行：人员[{$empName}]在[{$dateStr}]存在时间冲突({$d['start_time']}-{$d['end_time']})，请检查！"];
                            }
                        }
                    }
                    $empTimeline[$empId][$dateStr][] = ['s' => $s, 'e' => $e];

                    $insertDetails[] = [
                        'main_id'         => $mainId,
                        'employee_id'     => $empId,
                        'top_depart_id'   => $topDepartId,
                        'start_time_hour' => $d['start_hour'],
                        'start_time_min'  => $d['start_min'],
                        'end_time_hour'   => $d['end_hour'],
                        'end_time_min'    => $d['end_min'],
                        'total_work_min'  => $calcTotalMin,
                        'crt_time'        => $now,
                        'item_id'        => $itemId,
                        'order_time'    => $orderTimestamp,
                        'crt_id'        => $user['id'],
                    ];
                }

                // 批量写入明细
                DB::table('daily_pw_order_details')->insert($insertDetails);

                // C. 回填单号
                $code = $this->generateBillNo([
                    'top_depart_id' => $topDepartId,
                    'type' => DailyPwOrder::Order_type,
                    'period' => date("Ym", $orderTimestamp)
                ]);
                DB::table('daily_pw_order')->where('id', $mainId)->update(['code' => $code]);
            }

            DB::commit();
            return [true, ''];
        } catch (\Exception $e) {
            DB::rollBack();
            return [false, "保存失败：" . $e->getMessage()];
        }
    }
}