<?php

namespace App\Service;

use App\Model\CalendarDetails;
use App\Model\PLeaveOverOrder;
use App\Model\PLeaveOverOrderDetails;
use App\Model\Employee;
use App\Model\Item;
use App\Model\WorkRangeDetails;
use Illuminate\Support\Facades\DB;

class PLeaveOverService extends Service
{
    public function pLeaveOverEdit($data,$user){
        list($status,$msg) = $this->pLeaveOverRule($data, $user, false);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = PLeaveOverOrder::where('id',$data['id'])->first();
            $model->save();

            $time = time();
            PLeaveOverOrderDetails::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 pLeaveOverAdd($data,$user){
        list($status,$msg) = $this->pLeaveOverRule($data, $user);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = new PLeaveOverOrder();
            $model->code = $this->generateBillNo([
                'top_depart_id' => $user['top_depart_id'],
                'type' => PLeaveOverOrder::Order_type,
                'period' => date("Ym", $data['order_time'])
            ]);
            $model->order_time = $data['order_time'] ?? 0;
            $model->type = $data['type'];
            $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'],
                    '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_min' => $value['total_min'],
                    'crt_time' => $time,
                    'top_depart_id' => $value['top_depart_id'],
                    'type' => $value['type'],
                ];
            }
            if(! empty($unit)) PLeaveOverOrderDetails::insert($unit);
        }
    }

    private function getDetail($id){
        $data = PLeaveOverOrderDetails::where('del_time',0)
            ->where('main_id', $id)
            ->select('employee_id', 'start_time_hour', 'start_time_min', 'end_time_hour', 'end_time_min', 'total_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 pLeaveOverDel($data){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];

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

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

            PLeaveOverOrderDetails::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 pLeaveOverDetail($data, $user){
        if($this->isEmpty($data,'id')) return [false,'请选择数据！'];
        $customer = PLeaveOverOrder::where('del_time',0)
            ->where('id',$data['id'])
            ->first();
        if(empty($customer)) return [false,'单据不存在或已被删除'];
        $customer = $customer->toArray();
        $customer['type_title'] = PLeaveOverOrder::Type[$customer['type']] ?? "";
        $customer['crt_name'] = Employee::where('id',$customer['crt_id'])->value('title');
        $customer['crt_time'] = $customer['crt_time'] ? date("Y-m-d H:i:s",$customer['crt_time']): '';
        $customer['order_time'] = $customer['order_time'] ? date("Y-m-d",$customer['order_time']): '';

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

        return [true, $customer];
    }

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

        $model = PLeaveOverOrder::Clear($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['type'])) $model->where('type', $data['type']);
        if(! empty($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($data['time'][0]) && ! empty($data['time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['time'], true);
            $model->where('order_time','>=',$return[0]);
            $model->where('order_time','<=',$return[1]);
        }

        return $model;
    }

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

        return [true, $list];
    }

    public function pLeaveOverRule(&$data, $user, $is_add = true)
    {
        $data['top_depart_id'] = $user['top_depart_id'];
        $topDepartId = $data['top_depart_id'];

        // 1. 基础校验
        if (empty($data['type']) || ! isset(PLeaveOverOrder::Type[$data['type']])) return [false, '单据类型非法'];
        $typeName = PLeaveOverOrder::Type[$data['type']];
        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'];
        $orderType = $data['type'];

        if (!$is_add) {
            if (empty($data['id'])) return [false, 'ID不能为空'];
            $orderExists = DB::table('p_leave_over_order')
                ->where('id', $data['id'])
                ->where('top_depart_id', $topDepartId)
                ->where('del_time', 0)
                ->exists();
            if (!$orderExists) return [false, '原单据不存在或已被删除'];
        }

        // --- 日历工作日校验 ---
        $calendar = DB::table('calendar_details')
            ->where('del_time', 0)
            ->where('top_depart_id', $topDepartId)
            ->where('time', $orderTime)
            ->first();
        if (!$calendar) return [false, '所选日期未在公司日历中设置，无法校验'];

        $isWorkDay = (int)$calendar->is_work === CalendarDetails::TYPE_ONE;

        if (!$isWorkDay && $orderType == PLeaveOverOrder::TYPE_ONE) {
            return [false, date("Y-m-d", $orderTime) . "为非工作日，无需提交请假单"];
        }

        // 2. 获取【通用】工作时间段
        $commonWorkPeriods = [];
        if ($isWorkDay) {
            $workRanges = DB::table('work_range_details')
                ->where('del_time', 0)
                ->where('top_depart_id', $topDepartId)
                ->get();
            foreach ($workRanges as $wr) {
                $commonWorkPeriods[] = [
                    's' => $wr->start_time_hour * 60 + $wr->start_time_min,
                    'e' => $wr->end_time_hour * 60 + $wr->end_time_min
                ];
            }
        }

        // 3. 预加载明细中所有人员的信息及【个性化】工时
        if (empty($data['details'])) return [false, '明细不能为空'];
        $allEmpIds = array_filter(array_unique(array_column($data['details'], 'employee_id')));

        $empDisplayMap = Employee::whereIn('id', $allEmpIds)
            ->get(['id', 'number', 'title'])
            ->mapWithKeys(fn($item) => [$item->id => "[{$item->number}]{$item->title}"])->toArray();

        // --- 新增：预加载个性化工时 ---
        $specialWorkMap = DB::table('employee_work_range')
            ->whereIn('employee_id', $allEmpIds)
            ->where('top_depart_id', $topDepartId)
            ->get()
            ->groupBy('employee_id');

        // 预查库内已有时段 (保持不变)
        $dbExistingDetails = DB::table('p_leave_over_order_details as d')
            ->join('p_leave_over_order as m', 'd.main_id', '=', 'm.id')
            ->where('m.top_depart_id', $topDepartId)
            ->where('m.order_time', $orderTime)
            ->where('m.del_time', 0)
            ->where('d.del_time', 0)
            ->whereIn('d.employee_id', $allEmpIds)
            ->when(!$is_add, fn($q) => $q->where('m.id', '<>', $data['id']))
            ->select('d.employee_id', 'd.start_time_hour', 'd.start_time_min', 'd.end_time_hour', 'd.end_time_min', 'm.type as order_type')
            ->get()
            ->groupBy('employee_id');

        // 4. 循环明细校验
        $internalOverlap = [];

        foreach ($data['details'] as $key => &$value) {
            $empId = $value['employee_id'] ?? 0;
            $empName = $empDisplayMap[$empId] ?? "";
            if(empty($empName)) return [false, '人员不存在或已被删除'];

            // A. 时间合法性校验
            if ($value['start_time_hour'] > 23 || $value['end_time_hour'] > 24 || $value['start_time_min'] > 59 || $value['end_time_min'] > 59) {
                return [false, "人员{$empName}：填写的时间段不合法"];
            }
            $currentStart = $value['start_time_hour'] * 60 + $value['start_time_min'];
            $currentEnd   = $value['end_time_hour'] * 60 + $value['end_time_min'];
            if ($currentStart >= $currentEnd) return [false, "人员{$empName}：开始时间必须早于结束时间"];

            $value['total_min'] = $currentEnd - $currentStart;
            $value['type'] = $orderType;

            // B. 工作时间逻辑校验 (重点：确定使用哪套工时标准)
            if ($isWorkDay) {
                // 判定：是个性化还是通用？
                $currentEmpPeriods = [];
                if (isset($specialWorkMap[$empId])) {
                    foreach ($specialWorkMap[$empId] as $sw) {
                        $currentEmpPeriods[] = [
                            's' => $sw->start_time_hour * 60 + $sw->start_time_min,
                            'e' => $sw->end_time_hour * 60 + $sw->end_time_min
                        ];
                    }
                } else {
                    $currentEmpPeriods = $commonWorkPeriods;
                }

                if (empty($currentEmpPeriods)) return [false, "人员{$empName}：未找到对应的工作时间设置，无法校验"];

                if ($orderType == PLeaveOverOrder::TYPE_ONE) {
                    // 请假：必须在工作时间内
                    $inWorkRange = false;
                    foreach ($currentEmpPeriods as $wp) {
                        if ($currentStart >= $wp['s'] && $currentEnd <= $wp['e']) {
                            $inWorkRange = true;
                            break;
                        }
                    }
                    if (!$inWorkRange) return [false, "人员{$empName}：请假时间必须在对应的工作时间段内"];
                } else {
                    // 加班：不能在工作时间段内
                    foreach ($currentEmpPeriods as $wp) {
                        if ($currentStart < $wp['e'] && $wp['s'] < $currentEnd) {
                            return [false, "人员{$empName}：加班时间与正常工作时间重叠"];
                        }
                    }
                }
            }

            // C. 内部重叠校验
            if (isset($internalOverlap[$empId])) {
                foreach ($internalOverlap[$empId] as $period) {
                    if ($currentStart < $period['e'] && $period['s'] < $currentEnd) {
                        return [false, "人员{$empName}：本次提交的数据中存在时间重叠"];
                    }
                }
            }
            $internalOverlap[$empId][] = ['s' => $currentStart, 'e' => $currentEnd];

            // D. 库内同类型重叠校验
            if (isset($dbExistingDetails[$empId])) {
                foreach ($dbExistingDetails[$empId] as $dbD) {
                    if ($dbD->order_type == $orderType) {
                        $exStart = $dbD->start_time_hour * 60 + $dbD->start_time_min;
                        $exEnd   = $dbD->end_time_hour * 60 + $dbD->end_time_min;
                        if ($currentStart < $exEnd && $exStart < $currentEnd) {
                            $typeStr = $orderType == PLeaveOverOrder::TYPE_ONE ? "请假" : "加班";
                            return [false, "人员{$empName}：该时段与已有的{$typeStr}记录重叠"];
                        }
                    }
                }
            }

            $value['top_depart_id'] = $topDepartId;
        }

        // 5. 唯一性校验
        $uniqueCheck = PLeaveOverOrder::where('top_depart_id', $topDepartId)
            ->where('order_time', $orderTime)
            ->where('type', $orderType)
            ->where('del_time', 0);
        if (! $is_add) $uniqueCheck->where('id', '<>', $data['id']);

        if ($uniqueCheck->exists()) {
            return [false, date("Y-m-d", $orderTime) . "已存在{$typeName}，请在原单据上修改"];
        }

        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]['order_time'] = $value['order_time'] ? date('Y-m-d',$value['order_time']) : '';
            $data['data'][$key]['crt_name'] = $emp[$value['crt_id']] ?? '';
            $data['data'][$key]['type_title'] = PLeaveOverOrder::Type[$value['type']] ?? "";
        }

        return $data;
    }

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

        $mainIds = array_column($data, 'id');
        // 1. 获取子表详情及关联档案映射
        $detailsMap = $this->getLeaveOverDetailsMap($mainIds);

        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)) {
                // 如果主表没有明细，依然根据 column 导出一行（包含主表信息，明细列为空）
                $tempRow = [];
                foreach ($column as $col) {
                    $tempRow[] = $mainInfo[$col] ?? '';
                }
                $return[] = $tempRow;
            } else {
                // 3. 平铺导出：每一行明细都带上主表的 code 和日期
                foreach ($details as $sub) {
                    $fullRowData = array_merge($mainInfo, $sub);
                    $tempRow = [];
                    foreach ($column as $col) {
                        // $col 对应的是配置里的 export 字段，如 'employee_number', 'start_time' 等
                        $tempRow[] = $fullRowData[$col] ?? '';
                    }
                    $return[] = $tempRow;
                }
            }
        }
    }

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

        if ($details->isEmpty()) return [];

        // 2. 批量获取人员档案映射
        $empIds = $details->pluck('employee_id')->unique()->toArray();
        $empMap = DB::table('employee')
            ->whereIn('id', $empIds)
            ->get(['id', 'title', 'number'])
            ->keyBy('id');

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

            // 3. 组装明细行数据（Key 必须与 header 配置中的 export 字段一致）
            $detailRow = [
                // 人员信息
                'employee_number' => $emp ? $emp->number : '',
                'employee_title'  => $emp ? $emp->title : '',
                // 时间段格式化 8:0 -> 08:00
                '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),
                // 时长（分钟）
                'total_min'       => $item->total_min,
            ];

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

        return $res;
    }
}