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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Spatie\Feed;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Http\Response as HttpResponse;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Support\Collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Spatie\Feed\Exceptions\InvalidConfiguration;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Feed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var array */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $feedConfiguration;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(array $feedConfiguration)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->feedConfiguration = $feedConfiguration;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!str_contains($feedConfiguration['items'], '@')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw InvalidConfiguration::delimiterNotPresent($feedConfiguration['items']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getFeedResponse() : HttpResponse  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $feedContent = $this->getFeedContent($this->feedConfiguration);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return response($feedContent, 200, ['Content-Type' => 'application/xml;charset=UTF-8']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function getFeedContent() : string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        list($class, $method) = explode('@', $this->feedConfiguration['items']); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $items = app($class)->$method();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $meta = [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'link' => $this->feedConfiguration['url'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'description' => $this->feedConfiguration['description'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'title' => $this->feedConfiguration['title'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'updated' => $this->getLastUpdatedDate($items),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        base_path()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return view('laravel-feed::feed', compact('meta', 'items'))->render(); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function getLastUpdatedDate(Collection $items) : string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!count($items)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $lastItem = $items  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->sortBy(function (FeedItem $feedItem) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return $feedItem->getFeedItemUpdated()->format('YmdHis'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            })  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->last();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $lastItem->getFeedItemUpdated()->toAtomString();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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