<?php

namespace App\Admin\Services\Train;

use App\Admin\Filters\TrainExaminationFilter;
use App\Models\Train\{Examination, Question};
use App\Admin\Services\BaseService;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\{Validator, Storage};
use App\Enums\ExamStatus;
use App\Models\Employee;

class ExaminationService extends BaseService
{
    protected array $withRelationships = [];

    protected string $modelName = Examination::class;

    protected string $modelFilterName = TrainExaminationFilter::class;

    public function resloveData($data, $model = null)
    {
        if (isset($data['questions']) && $data['questions']) {
            $totalQuestions = 0;
            $totalScore = 0;
            $questions = [];
            $ids = array_column($data['questions'], 'question_id');
            $questionList = Question::whereIn('id', $ids)->get();
            foreach ($data['questions'] as $question) {
                $model = $questionList->firstWhere('id', $question['question_id']);
                if ($model) {
                    // title: 题目, cate: 类型, options: 选项, score: 分值
                    $question['title'] = $model->title;
                    $question['cate'] = $model->cate;
                    $question['options'] = $model->options;
                    array_push($questions, $question);

                    $totalQuestions++;
                    $totalScore+=$question['score'];
                }
            }
            $data['questions'] = $questions;
            $data['total_questions'] = $totalQuestions;
            $data['total_score'] = $totalScore;
        }
        return $data;
    }

    public function publish(Examination $examination, array $ids)
    {
        if ($examination->exam_status == ExamStatus::Published) {
            return $this->setError('已经发布了');
        }

        $questions = [];
        foreach($examination->questions as $question) {
            $question['options'] = array_map(function ($option) {
                $option['selected'] = false;
                return $option;
            }, $question['options']);
            array_push($questions, $question);
        }
        $employees = Employee::whereIn('id', $ids)->get();
        // 为员工生成考卷
        foreach ($employees as $employee) {
            $examination->papers()->create([
                'employee_id' => $employee->id,
                'content' => $questions,
            ]);
        }

        $examination->update(['exam_status' => ExamStatus::Published, 'published_at' => now()]);

        return true;
    }

    public function cancel(Examination $examination)
    {
        if ($examination->exam_status == ExamStatus::None) {
            return $this->setError('已经取消了');
        }
        $examination->papers()->delete();
        $examination->update(['exam_status' => ExamStatus::None, 'published_at' => null]);

        return true;
    }
}