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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace App\Http\Controllers;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Foundation\Bus\DispatchesJobs;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Routing\Controller as BaseController;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Foundation\Validation\ValidatesRequests;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Foundation\Auth\Access\AuthorizesRequests;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Controller extends BaseController  | 
            
                            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function shiftFirstLevelArrayKeysToBottom(array $nestedArray) { | 
            
                            
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                        $expandedArray = $this->expandNestedArraysIntoKeyListAndValue($nestedArray);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $rotatedArray = $this->rotateKeys($expandedArray, 1);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $mergedArray = $this->mergeExpandedTrees($rotatedArray);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $mergedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function addKeyAsFinalIndex($finalKey, $array) { | 
            
                            
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                        if (!is_array($array)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return [$finalKey => $array];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $newArray = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach($array as $key => $value) { | 
            
                            
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                                $newArray[$key] = $this->addKeyAsFinalIndex($finalKey, $value);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $newArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function expandNestedArraysIntoKeyListAndValue($nestedArray) { | 
            
                            
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                        if (!is_array($nestedArray)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $expandedArray = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'keys' => [],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'value' => $nestedArray,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $expandedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $expandedArray = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach($nestedArray as $key => $value) { | 
            
                            
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                                $subArray = $this->expandNestedArraysIntoKeyListAndValue($value);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach($subArray as $item) { | 
            
                            
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                                    array_unshift($item['keys'], $key);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $expandedArray[] = $item;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $expandedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function mergeExpandedTrees($expandedArray) { | 
            
                            
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                        $mergedArray = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach($expandedArray as $item) { | 
            
                            
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                            $tail = &$mergedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $size = count($item['keys']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $i = 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach($item['keys'] as $key) { | 
            
                            
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                                $i = ($i + 1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                //Check if this is the last key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($i == ($size)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    if (!isset($tail[$key])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $tail[$key] = $item['value'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    } else if (!is_array($tail[$key])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $value = $tail[$key];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $tail[$key] = [$value, $item['value']];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        array_push($tail[$key], $item['value']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    //If this is not the last key, it needs to contain an array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    if (!isset($tail[$key])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $tail[$key] = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    } else if (!is_array($tail[$key])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $value = $tail[$key];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $tail[$key] = [$value];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $tail = &$tail[$key];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $mergedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function rotateKeys($expandedArray, $steps) { | 
            
                            
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                        $rotatedArray = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach($expandedArray as $item) { | 
            
                            
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                            for ($i=0; $i<$steps; $i++) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                array_push($item['keys'], array_shift($item['keys']));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $rotatedArray[] = $item;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $rotatedArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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