<?php

namespace App\Service;

use App\Model\Depart;
use App\Model\Employee;
use App\Model\EmployeeDepartPermission;
use App\Model\EmployeeRole;
use App\Model\Role;
use App\Model\RoleMenu;
use App\Model\RoleMenuButton;
use App\Model\SysMenu;
use App\Model\SysMenuButton;
use App\Model\WorkRangeDetails;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;

class MiddleGroundService extends Service
{
    // 角色 ---------------------------------------
    public function roleEdit($data,$user){
        list($status,$msg) = $this->roleRule($data,$user, false);
        if(!$status) return [$status,$msg];

        $model = new Role();
        $model = $model->where('id',$data['id'])->first();
        $model->title = $data['title'];
        $model->save();

        return [true,''];
    }

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

        $model = new Role();
        $model->title = $data['title'] ;
        $model->top_depart_id = $user['top_depart_id'];
        $model->save();

        return [true,''];
    }

    public function roleDel($data, $user){
        if($this->isEmpty($data,'id')) return [false,'ID必须！'];

        $bool = EmployeeRole::where('del_time',0)
            ->whereIn('role_id',$data['id'])
            ->exists();
        if($bool) return [false,'角色已绑定人员'];

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

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

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

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

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

        return [true, ''];
    }

    public function roleList($data,$user){
        $model = Role::TopClear($user,$data);
        $model = $model->where('del_time',0)
            ->select('title','crt_time','id','upd_time')
            ->orderBy('id','desc');
        if(! empty($data['title'])) $model->where('title', 'LIKE', '%' . $data['title'] . '%');

        $list = $this->limit($model,'',$data);

        return [true, $list];
    }

    public function roleRule(&$data,$user, $is_check = true){
        if($this->isEmpty($data,'title')) return [false,'名称不能为空'];

        if($is_check){
            $bool = Role::where('title',$data['title'])
                ->where('top_depart_id', $user['top_depart_id'])
                ->where('del_time',0)
                ->exists();
            if($bool) return [false,'角色名称已存在'];
        }else{
            if($this->isEmpty($data,'id')) return [false,'ID不能为空'];
            $top_depart_id = Role::where('id',$data['id'])->value('top_depart_id');
            $bool = Role::where('title',$data['title'])
                ->where('top_depart_id',$top_depart_id)
                ->where('id','<>',$data['id'])
                ->where('del_time',0)
                ->exists();
            if($bool) return [false,'角色名称已存在'];
        }

        return [true, ''];
    }

    public function roleMenu($data){
        if(empty($data['role_id']))  return [false,'角色不能为空！'];
        if(empty($data['menu'])) return [false,'菜单数据不能为空！'];

        DB::beginTransaction();
        try {
            RoleMenu::where('del_time',0)->where('role_id',$data['role_id'])->update(['del_time' => time()]);
            RoleMenuButton::where('del_time',0)->where('role_id',$data['role_id'])->update(['del_time' => time()]);

            $insert = $insert2 = [];
            foreach ($data['menu'] as $t){
                $insert[] = [
                    'role_id' => $data['role_id'],
                    'menu_id' => $t['menu_id'],
                    'type' => $t['type'],
                    'crt_time' => time()
                ];
                if(! empty($t['button'])){
                    foreach ($t['button'] as $b){
                        $insert2[] = [
                            'role_id' => $data['role_id'],
                            'menu_id' => $t['menu_id'],
                            'button_id' => $b,
                            'crt_time' => time()
                        ];
                    }
                RoleMenuButton::insert($insert2);
                }
            }
            RoleMenu::insert($insert);

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

        return [true, ''];
    }

    public function roleDetail($data){
        if(empty($data['role_id'])) return [false,'请选择角色'];

        $role = Role::where('id',$data['role_id'])
            ->where('del_time',0)
            ->select('id','title')
            ->first();
        if(empty($role)) return [false,'角色不存在或已被删除'];
        $role = $role->toArray();

        $menu = RoleMenu::where('role_id',$data['role_id'])
            ->where('del_time',0)
            ->select('menu_id','type')
            ->get()->toArray();
        $button = $this->fillRoleButton([$data['role_id']]);
        foreach ($menu as $key => $value){
            $menu[$key]['button'] = $button[$value['menu_id']] ?? [];
        }
        $role['menu'] = $menu;

        return [true, $role];
    }

    public function fillRoleButton($role_id){
        $button = RoleMenuButton::whereIn('role_id',$role_id)
            ->where('del_time',0)
            ->select('menu_id','button_id')
            ->get()->toArray();
        $button_map = [];
        foreach ($button as $value){
            if(! isset($button_map[$value['menu_id']])){
                $button_map[$value['menu_id']][] = $value['button_id'];
            }else{
                if(! in_array($value['button_id'], $button_map[$value['menu_id']])) $button_map[$value['menu_id']][] = $value['button_id'];
            }
        }

        return $button_map;
    }

    public function initializationCompanyList($data, $user){
        $model = Depart::where('del_time',0)
            ->where('parent_id', 0)
            ->select('*')
            ->orderby('id', 'desc');

        if(! empty($data['title'])) $model->where('title', 'LIKE', '%'.$data['title'].'%');
        if(! empty($data['code'])) $model->where('code', 'LIKE', '%'.$data['code'].'%');

        $list = $this->limit($model,'',$data);

        return [true, $list];
    }

    // 公司初始化 返回 公司后台管理员账户 密码
    public function initializationCompany($data, $user){
        if(empty($data['title'])) return [false, '公司名称不能为空'];
        if(empty($data['code'])) return [false, '公司代码不能为空'];

        // ^[A-Za-z]+$  表示从头到尾只能是英文字母（不区分大小写）
        if (! preg_match('/^[A-Za-z]+$/', $data['code']) || mb_strlen($data['code']) < 4) return [false, "公司代码必须全为英文且长度需大于等于 4 位"];

        $exists = Depart::where('parent_id', 0)
            ->where('del_time', 0)
            ->where(function($query) use ($data) {
                $query->where('title', $data['title'])
                    ->orWhere('code', $data['code']);
            })
            ->exists();
        if($exists) return [false, '公司名称或公司代码已存在，新增失败'];

        $account = $data['code'] . "_" . 'admin';
        $exists = Employee::where('del_time', 0)
            ->where('account', $account)
            ->exists();
        if($exists) return [false, '创建账号已存在，新增失败'];

        try {
            DB::beginTransaction();

            //创建公司
            $model = new Depart();
            $model->parent_id = 0;
            $model->title = $data['title'];
            $model->code = $data['code'];
            $model->top_depart_id = 0;
            $model->save();
            //公司ID
            $top_depart_id = $model->id;

            $password = $this->generateAt8CharPassword();
            //创建账号
            $model_2 = new Employee();
            $model_2->title = $data['title'] . '管理员';
            $model_2->code = $data['code'];
            $model_2->account = $account;
            $model_2->password = Hash::make($password);
            $model_2->is_admin = Employee::IS_ADMIN_TWO;
            $model_2->top_depart_id = $top_depart_id;
            $model_2->state = Employee::TYPE_ONE;
            $model_2->save();
            $employee_id = $model_2->id;

            //关联人员的部门初始信息
            $model_3 = new EmployeeDepartPermission();
            $model_3->employee_id = $employee_id;
            $model_3->depart_id = 0;
            $model_3->top_depart_id = $top_depart_id;
            $model_3->save();

            //公司上班时段
            $work_range[] = [
                'top_depart_id' => $top_depart_id,
                'start_time_hour' => 9,
                'start_time_min' => 0,
                'end_time_hour' => 12,
                'end_time_min' => 0,
                'total_work_min' => 180,
            ];
            $work_range[] = [
                'top_depart_id' => $top_depart_id,
                'start_time_hour' => 13,
                'start_time_min' => 0,
                'end_time_hour' => 18,
                'end_time_min' => 0,
                'total_work_min' => 300,
            ];
            WorkRangeDetails::insert($work_range);

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

        return [true, ['account' => $account, 'password' => $password]];
    }

    function generateAt8CharPassword() {
        $lettersNumbers = 'abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789';

        $password = '@'; // 1. 先把固定的 @ 放进去

        // 2. 随机抽取 6 位英文或数字
        for ($i = 0; $i < 6; $i++) {
            $password .= $lettersNumbers[random_int(0, strlen($lettersNumbers) - 1)];
        }

        // 3. 打乱顺序，让 @ 的位置不固定
        return str_shuffle($password);
    }

    // 菜单
    public function menuList($data, $user){
        $type = $data['type'] ?? "";

        if(empty($type)){
            //权限
            $sysList = SysMenu::where('del_time',0)
                ->where('type', SysMenu::type_zero)
                ->select('title','icon','uri','parent_id','sort','id','is_authority', 'state')
                ->orderBy('sort','desc')
                ->get()
                ->toArray();
            $button = SysMenuButton::where('del_time',0)
                ->select('id','title','sort','func','menu_id')
                ->get()->toArray();

            $return = $this->fillMenuButton($button,$sysList, $user);
        }elseif($type == "all"){
            $sysList = SysMenu::where('del_time',0)
                ->where('type', SysMenu::type_one)
                ->select('title','icon','uri','parent_id','sort','id','is_authority', 'state')
                ->orderBy('sort','desc')
                ->get()
                ->toArray();
            //侧边栏
            $return = $this->returnTwo($sysList, $user);

            $return = [
                'one' => $sysList,
                'two' => $return,
            ];
        }


        return [true, $return];
    }

    private function returnTwo($sysList, $user){
        foreach ($sysList as $key => $value){
            if($value['state'] <= 0) unset($sysList[$key]);
        }
        $list = array_values($sysList);
        $return = $this->makeTree(0,$list);

        return $this->set_sort_circle($return);;
    }

    public function fillMenuButton($button, $menu, $user)
    {
        // 1. 预处理所有按钮池（合并配置中的特殊按钮）
        $allButtons = collect($button)->concat(config('specialButton') ?? [])->groupBy('menu_id');

        // 2. 获取权限基础数据
        $isSuper = ($user['is_admin'] == Employee::IS_ADMIN_THREE);

        $result = [];

        foreach ($menu as $m) {
            $menuId = $m['id'];

            // 权限过滤：非超管
            if (!$isSuper) continue;

            // 计算当前菜单拥有的按钮
            $btns = $allButtons->get($menuId) ?? [];

            $m['button'] = $btns;

            $result[] = $m;
        }

        return $result;
    }

    // 管理员
    public function employeeCommon($data,$user){
        $model = Employee::where('del_time',0)
            ->where('is_admin', Employee::IS_ADMIN_TWO)
            ->select('id', 'account', 'crt_time', 'top_depart_id','title')
            ->orderBy('id','desc');

        if(! empty($data['id'])) $model->whereIn('id', $data['id']);
        if(! empty($data['title'])) $model->where('title', 'LIKE', '%'.$data['title'].'%');
        if(! empty($data['mobile'])) $model->where('mobile', 'LIKE', '%'.$data['mobile'].'%');
        if(! empty($data['role'])) {
            $emp = EmployeeRole::where('role_id',$data['role'])
                ->where('del_time',0)
                ->select('employee_id')->get()->toArray();
            $model->whereIn('id',array_column($emp,'employee_id'));
        }

        return $model;
    }

    public function employeeList($data,$user){
        $model = $this->employeeCommon($data, $user);
        $list = $this->limit($model,'',$data);
        $list = $this->organizationEmployeeData($list, $data, $user);

        return [true, $list];
    }

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

        // 获取员工ID并查询扩展数据
        $employee_ids = array_column($data['data'], 'id');
        list($status, $extraMap) = $this->getEmployee($employee_ids);

        $depart_map = Depart::whereIn('id', array_unique(array_column($data['data'],'top_depart_id')))
            ->pluck('title', 'id')
            ->toArray();
        foreach ($data['data'] as &$item) {
            $id = $item['id'];
            $extra = $extraMap[$id] ?? null;

            $item['role'] = $extra['role_ids'] ?? [];
            $item['role_name'] = isset($extra['role_names']) ? implode(',', $extra['role_names']) : '';
            $item['top_depart_title'] = $depart_map[$item['top_depart_id']];

            $item['crt_time'] = !empty($item['crt_time']) ? date("Y-m-d", $item['crt_time']) : "";
        }

        return $data;
    }

    public function getEmployee(array $employee_ids)
    {
        if (empty($employee_ids)) return [false, []];

        // 1. 一次性获取所有角色
        $roles = DB::table('employee_role as a')
            ->join('role as b', 'a.role_id', '=', 'b.id')
            ->where('a.del_time', 0)
            ->where('b.del_time', 0)
            ->whereIn("a.employee_id", $employee_ids)
            ->select('a.employee_id', 'b.title', 'b.id')
            ->get();
        $resultMap = [];

        foreach ($roles as $r) {
            $resultMap[$r->employee_id]['role_ids'][] = $r->id;
            $resultMap[$r->employee_id]['role_names'][] = $r->title;
        }

        return [true, $resultMap];
    }

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

        try {
            DB::beginTransaction();
            $model = new Employee();
            $model = $model->where('id',$data['id'])->first();
            if($model->is_admin && $data['password'] !== '******') {
                $model->password = Hash::make($data['password']);
                $model->p_version = $model->p_version + 1;
            }
            $model->save();

            $time = time();

            EmployeeRole::where('employee_id',$data['id'])->update([
                'del_time' => $time
            ]);

            if(! empty($data['role'])){
                $insert = [];
                foreach ($data['role'] as $value){
                    $insert[] = [
                        'employee_id' => $model->id,
                        'role_id' => $value,
                        'crt_time' => $time,
                    ];
                }
                EmployeeRole::insert($insert);
            }

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

        return [true, ''];
    }

    public function employeeRule(&$data, $user, $is_add = true){
        if(empty($data['id'])) return [false, '管理员ID不能为空'];
        $bool = Employee::where('del_time',0)
            ->where('id', $data['id'])
            ->exists();
        if(! $bool) return [false, '管理员账户不存在或已被删除'];

        if(empty($data['password'])) return [false, '密码不能为空'];
        if(mb_strlen($data['password']) < 6) return [false, '密码长度不得小于6位长度'];

        return [true, ''];
    }

    public static function checkCenterUser($employee){
        if(empty($employee['employee_id'])) return [false, 'token错误'];
        if(! isset($employee['p_version'])) return [false, 'token错误'];
        $result = Employee::where('id', $employee['employee_id'])
            ->where('del_time',0)
            ->first();
        if(empty($result)) return [false, '账号不存在或已被删除'];
        $result = $result->toArray();
        if($result['is_admin'] != Employee::IS_ADMIN_THREE) return [false, '账号限制登录'];
        if($result['p_version'] != $employee['p_version']) return [false, '请重新登录'];

        return [true, $result];
    }
}