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<?php |
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namespace MaksimM\MultiUnitModels\Traits; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Support\Arr; |
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use MaksimM\MultiUnitModels\Exceptions\NotSupportedMultiUnitField; |
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use MaksimM\MultiUnitModels\Exceptions\NotSupportedMultiUnitFieldUnit; |
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use UnitConverter\Unit\AbstractUnit; |
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trait MultiUnitSupport |
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{ |
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use ModelConfiguration; |
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protected $unitConversionDataPostfix = '_ucd'; |
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protected $multiUnitColumns = []; |
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protected $multiUnitSelectedUnits = []; |
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private function getUnitConversionDataColumns() |
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{ |
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return array_map(function ($column) { |
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return $column.$this->getUnitConversionDataPostfix(); |
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}, array_keys($this->getMultiUnitColumns())); |
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} |
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protected static function bootMultiUnitSupport() |
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{ |
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//save conversion table if base value is changed |
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static::creating(function ($model) { |
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/** |
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* @var Model|MultiUnitSupport $model |
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*/ |
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foreach ($model->getMultiUnitColumns() as $unitBasedColumn => $options) { |
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if (isset($model->attributes[$unitBasedColumn])) { |
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$model->{$unitBasedColumn.$model->getUnitConversionDataPostfix()} = json_encode( |
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$model->calculateMultiUnitConversionData( |
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$model->attributes[$unitBasedColumn], |
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$model->getMultiUnitFieldUnit($unitBasedColumn), |
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$options['supported_units'] |
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) |
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); |
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$model->attributes[$unitBasedColumn] = $model->processMultiUnitFieldChanges( |
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$unitBasedColumn, |
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$model->{$unitBasedColumn} |
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); |
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} |
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} |
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}); |
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static::updating(function ($model) { |
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/** |
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* @var Model|MultiUnitSupport $model |
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*/ |
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foreach (Arr::only($model->getMultiUnitColumns(), array_keys($model->getDirty())) as $unitBasedColumn => $options) { |
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$newValue = $model->attributes[$unitBasedColumn]; |
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$newValueInDefaultUnits = $model->processMultiUnitFieldChanges( |
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$unitBasedColumn, |
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$newValue |
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); |
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$model->{$unitBasedColumn.$model->getUnitConversionDataPostfix()} = json_encode( |
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$model->calculateMultiUnitConversionData( |
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$newValue, |
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$model->getMultiUnitFieldUnit($unitBasedColumn), |
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$options['supported_units'] |
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) |
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); |
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$model->attributes[$unitBasedColumn] = $newValueInDefaultUnits; |
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} |
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}); |
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} |
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/** |
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* @param $value |
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* @param AbstractUnit $unit |
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* @param string[] $requiredUnits |
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* |
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* @return array|null |
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*/ |
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private function calculateMultiUnitConversionData($value, AbstractUnit $unit, $requiredUnits) |
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{ |
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if (is_null($value)) { |
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return; |
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} |
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$conversionData = []; |
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foreach ($requiredUnits as $requiredUnitClass) { |
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/** |
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* @var AbstractUnit $requiredUnit |
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*/ |
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$requiredUnit = new $requiredUnitClass(); |
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$conversionData[$requiredUnit->getId()] = (new $unit($value))->as($requiredUnit); |
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} |
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return $conversionData; |
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} |
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public function getMultiUnitExistingConversionData($field) |
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{ |
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return json_decode($this->{$field.$this->getUnitConversionDataPostfix()} ?? null); |
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} |
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/** |
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* @return string |
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*/ |
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protected function getUnitConversionDataPostfix() |
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{ |
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return $this->unitConversionDataPostfix; |
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} |
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/** |
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* @return array |
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*/ |
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public function getMultiUnitColumns() |
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{ |
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return $this->multiUnitColumns; |
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} |
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/** |
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* @param $field |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return AbstractUnit[] |
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*/ |
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public function getMultiUnitFieldSupportedUnits($field) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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return $this->getMultiUnitColumns()[$field]['supported_units']; |
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} |
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throw new NotSupportedMultiUnitField($field); |
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} |
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/** |
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* @param $field |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return AbstractUnit |
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*/ |
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public function getMultiUnitFieldDefaultUnit($field) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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$unitClass = $this->getMultiUnitColumns()[$field]['default_unit']; |
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return new $unitClass(); |
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} |
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throw new NotSupportedMultiUnitField($field); |
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} |
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/** |
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* @param $field |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return AbstractUnit |
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*/ |
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public function getMultiUnitFieldSelectedUnit($field) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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$unitClass = $this->multiUnitSelectedUnits[$field] ?? $this->getMultiUnitFieldDefaultUnit($field); |
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return new $unitClass(); |
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} |
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throw new NotSupportedMultiUnitField($field); |
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} |
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/** |
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* @param $field |
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* @param string $unit |
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* |
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* @throws NotSupportedMultiUnitField |
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* @throws NotSupportedMultiUnitFieldUnit |
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*/ |
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public function setMultiUnitFieldSelectedUnit($field, $unit) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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$found = false; |
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View Code Duplication |
foreach ($this->getMultiUnitFieldSupportedUnits($field) as $unitClass) { |
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/** |
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* @var AbstractUnit $unit |
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*/ |
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$supportedUnit = new $unitClass(); |
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if (strtolower($supportedUnit->getId()) == strtolower($unit)) { |
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$found = true; |
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break; |
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} |
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} |
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if ($found) { |
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$this->multiUnitSelectedUnits[$field] = $unitClass; |
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} else { |
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throw new NotSupportedMultiUnitFieldUnit($field, $unit); |
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} |
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} else { |
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throw new NotSupportedMultiUnitField($field); |
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} |
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} |
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/** |
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* @param $field |
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* @param string $unit |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return mixed |
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*/ |
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public function getMultiUnitFieldValueByUnitName($field, $unit = null) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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if (isset($this->{$field})) { |
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if (is_null($unit)) { |
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$unit = $this->getMultiUnitFieldUnit($field); |
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} else { |
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View Code Duplication |
foreach ($this->getMultiUnitFieldSupportedUnits($field) as $unitClass) { |
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/** |
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* @var AbstractUnit $unit |
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*/ |
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$supportedUnit = new $unitClass(); |
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if (strtolower($supportedUnit->getId()) == strtolower($unit)) { |
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$unit = $supportedUnit; |
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break; |
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} |
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} |
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} |
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if (is_string($unit)) { |
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throw new NotSupportedMultiUnitField($field); |
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} |
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$existingConversionData = $this->getMultiUnitExistingConversionData($field); |
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View Code Duplication |
if (!is_null($existingConversionData) && !is_null($existingConversionData->{$unit->getId()})) { |
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return $existingConversionData->{$unit->getId()}; |
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} |
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return ($this->getMultiUnitFieldSelectedUnit($field)->setValue($this->{$field} ?? $this->attributes[$field]))->as(new $unit()); |
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} else { |
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return; |
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} |
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} |
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throw new NotSupportedMultiUnitField($field); |
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} |
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/** |
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* @param $field |
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* @param AbstractUnit|null $unit |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return mixed |
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*/ |
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public function getMultiUnitFieldValue($field, AbstractUnit $unit = null) |
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{ |
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if ($this->isMultiUnitField($field)) { |
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if (isset($this->{$field})) { |
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if (is_null($unit)) { |
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$unit = $this->getMultiUnitFieldUnit($field); |
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} |
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$existingConversionData = $this->getMultiUnitExistingConversionData($field); |
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View Code Duplication |
if (!is_null($existingConversionData) && !is_null($existingConversionData->{$unit->getId()})) { |
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return $existingConversionData->{$unit->getId()}; |
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} |
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return ($this->getMultiUnitFieldSelectedUnit($field)->setValue($this->{$field} ?? $this->attributes[$field]))->as(new $unit()); |
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} else { |
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return; |
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} |
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} |
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throw new NotSupportedMultiUnitField($field); |
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} |
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protected function isMultiUnitField($field) |
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{ |
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return isset($this->getMultiUnitColumns()[$field]); |
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} |
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/** |
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* @param $field |
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* |
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* @throws NotSupportedMultiUnitField |
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* |
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* @return AbstractUnit |
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*/ |
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protected function getMultiUnitFieldUnit($field, $preferDefault = false) |
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{ |
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return $preferDefault ? $this->getMultiUnitFieldDefaultUnit($field) : $this->getMultiUnitFieldSelectedUnit($field); |
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} |
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} |
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