<?php

namespace App\Http\Controllers\API;

use App\Http\Controllers\Controller;
use App\Http\Requests\API\Department\CreateOrUpdateRequest;
use App\Http\Resources\API\DepartmentResource;
use App\Models\Department;
use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class DepartmentController extends Controller
{

    public function index(Request $request)
    {
        return $this->getDepartments($request);
    }

    public function publicSearch(Request $request)
    {
      return $this->getDepartments($request);
    }

    protected function getDepartments(Request $request)
    {
        $sort = $request->input('sort', 'desc');
        $pageSize = $request->get('page_size') ?? 10;
        $departments = Department::filter($request->all())->orderBy('created_at', $sort)->paginate($pageSize);
        $departmentTree = !empty(make_tree($departments->toArray()['data'])) ? make_tree($departments->toArray()['data']) : $departments->toArray()['data'];


        return [
            'data' => $departmentTree,
            'total' => $departments->total(),
        ];
    }


    public function store(CreateOrUpdateRequest $request)
    {
        $department=new Department();

        $department->mergeFillable([
            'company_id'
        ]);

        $department->fill([
            ...$request->all(),
            'company_id' => Auth::user()->company_id,
        ]);

        $department->save();

        return $this->created();
    }


    public function show(string $id)
    {
        $department=Department::query()->findOrFail($id);

        return new DepartmentResource($department);
    }


    public function update(CreateOrUpdateRequest $request,string $id)
    {
        $department=Department::findOrFail($id);
        $department->fill($request->all());
        $department->save();
        return $this->noContent();
    }


    public function destroy(string $id)
    {
        $department = Department::findOrFail($id);

        if(!empty($department->children()->first())){
            throw new \Exception("Please remove the sub-level departments.");
        }

        $department->delete();

        return $this->noContent();
    }

    public function departmentUserIndex(){

        //封装部门
        $departments=Department::query()->get(['id','name','parent_id'])->each(function ($departments){
            $departments->new_id='department'.$departments->id;
            $departments->new_parent_id='department'.$departments->parent_id;
            $departments->type='department';
        })->toArray();

        //封装用户
        $users=User::query()->where('company_id',Auth::user()->company_id)->get(['id','name','department_id'])->each(function ($users){
            $users->new_id='user'.$users->id;
            $users->new_parent_id='department'.$users->department_id;
            $users->type='user';
        })->toArray();
        $departmentTree=$this->makeUserTree(array_merge($departments, $users));


        return $this->success([
            'data' => $departmentTree
        ]);

    }

    protected function makeUserTree(array $departmentUsers, $parentId = 'department0') {

        $tree = [];
        if (empty($departmentUsers)) {
            return $tree;
        }

        $newList = [];
        foreach ($departmentUsers as $k => $v) {
            $newList[$v['new_id']] = $v;
        }

        foreach ($newList as $value) {
            if ($parentId == $value['new_parent_id']) {
                $tree[] = &$newList[$value['new_id']];
            }elseif (isset($newList[$value['new_parent_id']])) {
                $newList[$value['new_parent_id']]['children'][] = &$newList[$value['new_id']];
            }
        }


        return $tree;
    }

}