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<?php |
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namespace Mattbit\Flat\Storage; |
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use Mattbit\Flat\Model\Date; |
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use Mattbit\Flat\Model\Document; |
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use Mattbit\Flat\Model\DocumentInterface; |
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use Mattbit\Flat\Exception\DecodeException; |
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class JsonEncoder implements EncoderInterface |
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{ |
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public function encode(DocumentInterface $document) |
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{ |
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$flattened = $this->flatten($document); |
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$dates = $this->filterDateAttributes($flattened); |
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$data = [ |
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'_doc' => $document, |
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]; |
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if (!empty($dates)) { |
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$data['_meta'] = [ |
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'dates' => $dates |
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]; |
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} |
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return json_encode($data, JSON_PRETTY_PRINT); |
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} |
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public function decode($data) |
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{ |
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$data = json_decode($data, true); |
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if (!isset($data['_doc'])) { |
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throw new DecodeException("Document decoding failed because of bad/corrupted data."); |
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} |
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$document = new Document($data['_doc']); |
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if (isset($data['_meta']['dates'])) { |
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foreach ($data['_meta']['dates'] as $key) { |
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$document->set($key, new Date($document->get($key))); |
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} |
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} |
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return $document; |
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} |
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public function flatten($document, $prepend = '') |
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{ |
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$results = []; |
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foreach ($document as $key => $value) { |
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if (is_array($value) && !empty($value)) { |
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$results = array_merge($results, $this->flatten($value, $prepend.$key.'.')); |
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} else { |
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$results[$prepend.$key] = $value; |
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} |
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} |
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return $results; |
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} |
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public function filterDateAttributes($attributes) |
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{ |
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return array_keys(array_filter($attributes, function($value) { |
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return $value instanceof \DateTime; |
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})); |
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} |
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} |
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mattbit /
flat
