<?php

namespace App\Admin\Services\Train;

use App\Admin\Filters\TrainExaminationFilter;
use App\Admin\Services\BaseService;
use App\Enums\ExamStatus;
use App\Enums\MessageType;
use App\Models\Employee;
use App\Models\Train\Examination;
use App\Models\Train\Question;
use App\Services\MessageService;

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

    protected string $modelName = Examination::class;

    protected string $modelFilterName = TrainExaminationFilter::class;

    public function getDetail($id)
    {
        $query = $this->query();

        $this->addRelations($query, 'detail');

        $model = $query->find($id);
        $model->min_mark = $model->papers->whereNotNull('finished_at')->min('mark');
        $model->max_mark = $model->papers->whereNotNull('finished_at')->max('mark');
        $model->avg_mark = floor($model->papers->whereNotNull('finished_at')->avg('mark') * 100) / 100;
        $model->total_finished = $model->papers->whereNotNull('finished_at')->count().'/'.$model->papers->count();

        return $model;
    }

    public function resloveData($data, $model = null)
    {
        if (isset($data['questions']) && $data['questions']) {
            $totalQuestions = 0;
            $totalScore = 0;
            $questions = [];
            $ids = array_column($data['questions'], 'id');
            $questionList = Question::whereIn('id', $ids)->get();
            foreach ($data['questions'] as $index => $question) {
                $model = $questionList->firstWhere('id', $question['id']);
                if ($model) {
                    // sort: 序号, id: Question.id, title: 题目, cate: 类型, options: 选项, score: 分值
                    $item = [
                        'sort' => $index + 1,
                        'id' => $model->id,
                        'title' => $model->title,
                        'cate' => $model->cate,
                        'cate_name' => $model->cate->text(),
                        'options' => $model->options,
                        'score' => data_get($question, 'score', 1),
                    ];
                    array_push($questions, $item);

                    $totalQuestions++;
                    $totalScore += $item['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) {
            $paper = $examination->papers()->create([
                'employee_id' => $employee->id,
                'content' => $questions,
            ]);

            (new MessageService())->create(
                MessageType::Exam,
                '考试通知',
                '您有一张待完成试卷，请尽快完成考试。',
                [$employee],
                ['paper' => ['id' => $paper->id]],
            );
        }

        $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;
    }
}