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<?php declare(strict_types=1); |
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namespace Thinktomorrow\Chief\Fields; |
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use ArrayIterator; |
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use Thinktomorrow\Chief\Fields\Types\Field; |
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class Fields implements \ArrayAccess, \IteratorAggregate, \Countable |
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{ |
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/** @var array */ |
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private $fields; |
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final public function __construct(array $fields = []) |
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{ |
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$this->validateFields($fields); |
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$this->fields = $this->convertToKeyedArray($fields); |
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} |
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public function all(): array |
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{ |
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return $this->fields; |
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} |
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public function first(): ?Field |
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{ |
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if (!$this->any()) { |
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return null; |
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} |
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return reset($this->fields); |
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} |
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public function any(): bool |
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{ |
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return count($this->all()) > 0; |
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} |
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public function isEmpty(): bool |
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{ |
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return !$this->any(); |
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} |
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public function keys(): array |
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{ |
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return array_keys($this->fields); |
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} |
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public function filterBy($key, $value = null) |
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{ |
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$fields = []; |
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foreach ($this->fields as $i => $field) { |
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if ($key instanceof \Closure) { |
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if (true == $key($field)) { |
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$fields[] = $field; |
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} |
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continue; |
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} |
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$method = 'get' . ucfirst($key); |
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// Reject from list if value does not match expected one |
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if ($value && $value == $field->$method()) { |
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$fields[] = $field; |
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} // Reject from list if key returns null (key not present on field) |
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elseif (!$value && !is_null($field->$method())) { |
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$fields[] = $field; |
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} |
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} |
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return new static($fields); |
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} |
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public function add(Field ...$fields): Fields |
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{ |
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return new Fields(array_merge($this->fields, $fields)); |
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} |
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public function merge(Fields $fields): Fields |
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{ |
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return new Fields(array_merge($this->fields, $fields->all())); |
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} |
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public function remove($keys = null) |
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{ |
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if (!$keys) { |
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return $this; |
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} |
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if (is_string($keys)) { |
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$keys = func_get_args(); |
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} |
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foreach ($this->fields as $k => $field) { |
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if (in_array($field->getKey(), $keys)) { |
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unset($this->fields[$k]); |
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} |
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} |
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return $this; |
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} |
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public function offsetExists($offset) |
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{ |
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return isset($this->fields[$offset]); |
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} |
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public function offsetGet($offset) |
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{ |
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return (isset($this->fields[$offset])) |
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? $this->fields[$offset] |
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: null; |
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} |
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public function offsetSet($offset, $value) |
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{ |
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if (!$value instanceof Field) { |
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throw new \InvalidArgumentException('Passed value must be of type ' . Field::class); |
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} |
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$this->fields[$offset] = $value; |
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} |
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public function offsetUnset($offset) |
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{ |
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unset($this->fields[$offset]); |
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} |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->fields); |
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} |
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private function convertToKeyedArray(array $fields): array |
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{ |
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$keyedFields = []; |
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/** @var Field */ |
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foreach ($fields as $field) { |
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$keyedFields[$field->getKey()] = $field; |
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} |
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return $keyedFields; |
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} |
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private function validateFields(array $fields) |
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{ |
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array_map(function (Field $field) { |
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}, $fields); |
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} |
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public function count() |
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{ |
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return count($this->fields); |
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} |
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} |
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thinktomorrow /
chief
