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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace App\Models\Eloquent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Database\Eloquent\Factories\HasFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Database\Eloquent\Model;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Carbon;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DateTimeInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Log;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class GroupHomework extends Model  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    use HasFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function group()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->belongsTo('App\Models\Eloquent\Group', 'group_id', 'gid'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function problems()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $this->hasMany('App\Models\Eloquent\GroupHomeworkProblem'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function serializeDate(DateTimeInterface $date)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $date->format('Y-m-d H:i:s'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getStatisticsAttribute()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $cachedStatistics = Cache::tags(['homework', 'statistics'])->get($this->id);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (blank($cachedStatistics)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $cachedStatistics = $this->cacheStatistics();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($cachedStatistics === false) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $cachedStatistics['timestamp'] = Carbon::createFromTimestamp($cachedStatistics['timestamp']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $cachedStatistics;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function cacheStatistics()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $statistics = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $homeworkProblems = $this->problems->sortBy('order_index'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $users = $this->group->members()->where('role', '>=', 1)->get(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $userIDArr = $users->pluck('uid'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $defaultVerdict = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($homeworkProblems as $homeworkProblem) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $statistics['problems'][] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'pid' => $homeworkProblem->problem_id,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'readable_name' => $homeworkProblem->problem->readable_name,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $defaultVerdict[$homeworkProblem->problem_id] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    "icon" => "checkbox-blank-circle-outline",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    "color" => "wemd-grey-text"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($users as $user) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $statistics['data'][$user->uid] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'name' => $user->user->name,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'nick_name' => blank($user->nick_name) ? null : $user->nick_name,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'solved' => 0,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'attempted' => 0,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'verdict' => $defaultVerdict  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $endedAt = Carbon::parse($this->ended_at);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($homeworkProblems as $homeworkProblem) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $userProbIDArr = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($homeworkProblem->problem->users_latest_submission($userIDArr->diff($userProbIDArr), null, $endedAt, ['Accepted'])->get() as $acceptedRecord) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['verdict'][$homeworkProblem->problem_id] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "icon" => "checkbox-blank-circle",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "color" => $acceptedRecord['color']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['solved']++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $userProbIDArr[] = $acceptedRecord['uid'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($homeworkProblem->problem->users_latest_submission($userIDArr->diff($userProbIDArr), null, $endedAt, ['Partially Accepted'])->get() as $acceptedRecord) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['verdict'][$homeworkProblem->problem_id] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "icon" => "cisco-webex",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "color" => $acceptedRecord['color']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['attempted']++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $userProbIDArr[] = $acceptedRecord['uid'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($homeworkProblem->problem->users_latest_submission($userIDArr->diff($userProbIDArr), null, $endedAt)->get() as $acceptedRecord) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['verdict'][$homeworkProblem->problem_id] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "icon" => "cisco-webex",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        "color" => $acceptedRecord['color']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $statistics['data'][$acceptedRecord['uid']]['attempted']++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $userProbIDArr[] = $acceptedRecord['uid'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            usort($statistics['data'], function ($a, $b) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return $b["solved"] == $a["solved"] ? $b["attempted"] <=> $a["attempted"] : $b["solved"] <=> $a["solved"];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $statistics['timestamp'] = time();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            Cache::tags(['homework', 'statistics'])->put($this->id, $statistics, 360);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $statistics;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (Exception $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            Log::alert($e);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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