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<?php
/**
* File name: UserQuizRepository.php
* Last modified: 19/07/21, 12:20 AM
* Author: NearCraft - https://codecanyon.net/user/nearcraft
* Copyright (c) 2021
*/
namespace App\Repositories;
use App\Models\Quiz;
use App\Models\QuizSession;
use Carbon\Carbon;
use Jenssegers\Agent\Agent;
class UserQuizRepository
{
/**
* Get the existing in-completed session
*
* @param Quiz $quiz
* @return \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Relations\HasMany|object|null
*/
public function getSession(Quiz $quiz)
{
return $quiz->sessions()->where('user_id', auth()->user()->id)->latest()->first();
}
/**
* Get the existing in-completed session of a quiz schedule
*
* @param Quiz $quiz
* @param $scheduleId
* @return \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Relations\HasMany|object|null
*/
public function getScheduleSession(Quiz $quiz, $scheduleId)
{
return $quiz->sessions()->where('user_id', auth()->user()->id)->where('quiz_schedule_id', '=', $scheduleId)->latest()->first();
}
/**
* Create a new quiz session
*
* @param Quiz $quiz
* @param QuestionRepository $questionRepository
* @return |null
*/
public function createSession(Quiz $quiz, QuestionRepository $questionRepository)
{
$now = Carbon::now();
$questions = $quiz->questions()->with(['questionType:id,name,code'])->get();
$session = QuizSession::create([
'quiz_id' => $quiz->id,
'user_id' => auth()->user()->id,
'starts_at' => $now->toDateTimeString(),
'ends_at' => $now->addSeconds($quiz->total_duration)->toDateTimeString(),
'status' => 'started'
]);
// Attach questions to quiz session
if($session) {
if($quiz->settings->get('shuffle_questions', false)) {
$questions = $questions->shuffle();
}
$formattedQuestions = [];
$sno = 1;
foreach ($questions as $question) {
$formattedQuestions[$question->id] = [
'sno' => $sno,
'original_question' => formatQuestionProperty($question->question, $question->questionType->code),
'options' => serialize(formatOptionsProperty($question->options, $question->questionType->code, $question->question)),
'correct_answer' => serialize($questionRepository->formatCorrectAnswer($question, [])),
'status' => 'not_visited',
];
$sno++;
}
$session->questions()->attach($formattedQuestions);
return $session;
}
return null;
}
/**
* Create a new quiz session for a schedule
*
* @param Quiz $quiz
* @param $schedule
* @param QuestionRepository $questionRepository
* @return |null
*/
public function createScheduleSession(Quiz $quiz, $schedule, QuestionRepository $questionRepository)
{
$now = Carbon::now();
$questions = $quiz->questions()->with(['questionType:id,name,code'])->get();
if($schedule->schedule_type == 'fixed') {
$starts_at = $now->toDateTimeString();
$ends_at = $schedule->ends_at->timezone('UTC')->toDateTimeString();
} else {
$starts_at = $now->toDateTimeString();
$ends_at = $now->addSeconds($quiz->total_duration)->toDateTimeString();
}
$session = QuizSession::create([
'quiz_id' => $quiz->id,
'quiz_schedule_id' => $schedule->id,
'user_id' => auth()->user()->id,
'starts_at' => $starts_at,
'ends_at' => $ends_at,
'status' => 'started',
]);
// Attach questions to quiz session
if($session) {
if($quiz->settings->get('shuffle_questions', false)) {
$questions = $questions->shuffle();
}
$formattedQuestions = [];
$sno = 1;
foreach ($questions as $question) {
$formattedQuestions[$question->id] = [
'sno' => $sno,
'original_question' => formatQuestionProperty($question->question, $question->questionType->code),
'options' => serialize(formatOptionsProperty($question->options, $question->questionType->code, $question->question)),
'correct_answer' => serialize($questionRepository->formatCorrectAnswer($question, [])),
'status' => 'not_visited',
];
$sno++;
}
$session->questions()->attach($formattedQuestions);
return $session;
}
return null;
}
/**
* Get Quiz Instructions
*
* @param Quiz $quiz
* @return \string[][]
*/
public function getInstructions(Quiz $quiz)
{
$duration = $quiz->total_duration/60;
$negativeMarksText= "";
if($quiz->settings->get('auto_grading', true)) {
$marks = __('Random');
} else {
$marks = $quiz->settings->get('correct_marks');
}
$marksText = str_replace("--", $marks ,__('quiz_marks_instruction'));
if($quiz->settings->get('enable_negative_marking', false)) {
$negative_marks = $quiz->settings->get('negative_marking_type', 'fixed') == 'fixed'
? $quiz->settings->get('negative_marks', 0)
: $quiz->settings->get('negative_marks', 0)."%";
$negativeMarksText .= str_replace("--", $negative_marks ,__('negative_marks_text'));
} else {
$negativeMarksText .= __('no_negative_marks_text');
}
return [
'quiz' => [
str_replace("--", $duration ,__('quiz_duration_instruction')),
str_replace("--", $quiz->total_questions ,__('quiz_questions_instruction')),
$marksText,
$negativeMarksText,
str_replace("--", $quiz->settings->get('cutoff', 0).'%',__('quiz_percentage_instruction')),
],
"standard" => [
__('quiz_clock_instruction'),
__('question_navigation_instruction'),
__('question_save_instruction'),
__('question_palette_instruction')
]
];
}
/**
* Get session result object
*
* @param $session
* @param $quiz
* @return array
*/
public function sessionResults($session, $quiz)
{
$questions = collect($session->questions);
$answered = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->count();
$correct = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->where('pivot.is_correct', '=', true)->count();
$wrong = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->where('pivot.is_correct', '=', false)->count();
$answered_time = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->sum('pivot.time_taken');
$correctMarks = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->sum('pivot.marks_earned');
$negativeMarks = $questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->sum('pivot.marks_deducted');
$percentage = $quiz->total_marks != 0 ? round(($correctMarks - $negativeMarks) * (100/$quiz->total_marks), 2) : 0;
$agent = new Agent();
return [
'score' => $correctMarks - $negativeMarks,
'marks_earned' => $correctMarks,
'marks_deducted' => $negativeMarks,
'percentage' => $percentage,
'cutoff' => $quiz->settings->get('cutoff'),
'pass_or_fail' => $percentage >= $quiz->settings->get('cutoff') ? 'Passed' : 'Failed',
'speed' => round(calculateSpeedPerHour($answered, $session->total_time_taken)),//que/hr
'accuracy' => round(calculateAccuracy($correct, $answered), 2), //%
'total_questions' => $quiz->total_questions,
'total_duration' => $quiz->total_duration / 60,
'total_marks' => $quiz->total_marks,
'answered_questions' => $answered,
'unanswered_questions' => $quiz->total_questions - $answered,
'correct_answered_questions' => $correct,
'wrong_answered_questions' => $wrong,
'total_time_taken' => formattedSeconds($session->total_time_taken),
'time_taken_for_answered' => formattedSeconds($answered_time),
'time_taken_for_other' => formattedSeconds($session->total_time_taken - $answered_time),
'time_taken_for_correct_answered' => formattedSeconds($questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->where('pivot.is_correct', '=', true)->sum('pivot.time_taken')),
'time_taken_for_wrong_answered' => formattedSeconds($questions->whereIn('pivot.status', ['answered', 'answered_mark_for_review'])->where('pivot.is_correct', '=', false)->sum('pivot.time_taken')),
'user_agent' => $agent->getUserAgent(),
'ip_address' => request()->getClientIp()
];
}
/**
* Get quiz progress links
*
* @param $slug
* @param $session
* @param $active
* @param bool $leaderboard
* @return array[]
*/
public function getQuizProgressLinks($slug, $session, $active, $leaderboard = true)
{
$links = [
[
'key' => 'analysis',
'title' => __('Analysis'),
'url' => route('quiz_results', ['quiz' => $slug, 'session' => $session]),
'active' => $active == 'quiz_results'
],
[
'key' => 'solutions',
'title' => __('Solutions'),
'url' => route('quiz_solutions', ['quiz' => $slug, 'session' => $session]),
'active' => $active == 'quiz_solutions'
]
];
if($leaderboard) {
array_push($links, [
'key' => 'leaderboard',
'title' => __('Top Scorers'),
'url' => route('quiz_leaderboard', ['quiz' => $slug, 'session' => $session]),
'active' => $active == 'quiz_leaderboard'
]);
}
return $links;
}
}