75 lines
1.8 KiB
PHP
75 lines
1.8 KiB
PHP
<?php
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namespace App\Models;
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use App\Models\Dataset;
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use App\Models\HashValue;
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use Illuminate\Database\Eloquent\Model;
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class File extends Model
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{
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protected $table = 'document_files';
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public $timestamps = true;
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protected $fillable = ['path_name', 'file_size', 'mime_type', 'label', 'sort_order'];
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public function dataset()
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{
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return $this->belongsTo(Dataset::class, 'document_id', 'id');
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}
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public function hashvalues()
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{
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return $this->hasMany(HashValue::class, 'file_id', 'id');
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}
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/**
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* Create hash value model objects from original file.
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*
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* TODO throws Exception in case hash computation is not possible
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* (e.g., if referenced file is missing in file system)
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*
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* @return void
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*/
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public function createHashValues()
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{
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$hashtypes = array('md5', 'sha512');
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foreach ($hashtypes as $type) {
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$hash = new HashValue();
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$hash->type = $type;
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$hashString = $this->getRealHash($type);
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$hash->value = $hashString;
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$this->hashvalues()->save($hash);
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}
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}
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/**
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* Get the hash value of the file
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*
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* @param string $type Type of the hash value, @see hash_file();
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* @return string hash value
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*/
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private function getRealHash($type)
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{
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$hash = @hash_file($type, $this->getPath());
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if (empty($hash)) {
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throw new \Exception("Empty HASH for file '" . $this->getPath() . "'");
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}
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return $hash;
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}
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/**
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* Get full path of destination file.
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*/
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private function getPath()
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{
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return storage_path('app/public/' . $this->path_name);
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}
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public function exists()
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{
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return \Illuminate\Support\Facades\File::exists(public_path('storage/' . $this->path_name));
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}
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}
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