Mejora de productos
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148
provm/common/Factory/Model.php
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148
provm/common/Factory/Model.php
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@ -0,0 +1,148 @@
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<?php
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namespace ProVM\Common\Factory;
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use ProVM\Common\Implementation\Model as BaseModel;
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class Model {
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protected $data_folder;
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protected $image_folder;
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public function __construct(string $data_folder, string $image_folder) {
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$this->data_folder = $data_folder;
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$this->image_folder = $image_folder;
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}
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public function getFolder(): string {
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return $this->data_folder;
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}
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public function get($file) {
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$filename = implode(DIRECTORY_SEPARATOR, [
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$this->data_folder,
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$file
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]);
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return json_decode(trim(file_get_contents($filename)));
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}
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protected function reset() {
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$this->class = null;
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$this->conditions = null;
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$this->limits = null;
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}
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protected $class;
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public function find(string $class): Model {
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if (!class_exists($class) or !is_subclass_of($class, \ProVM\Common\Implementation\Model::class)) {
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throw new \InvalidArgumentException($class . ' is not defined.');
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}
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$this->reset();
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$this->class = $class;
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return $this;
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}
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/**
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* JSON
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* [
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* {
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* <field>,
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* <value>,
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* <operator>
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* },
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* ...
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* ]
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* @var array
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*/
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protected $conditions;
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public function where(array $conditions): Model {
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if ($this->conditions === null) {
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$this->conditions = [];
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}
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foreach ($conditions as $condition) {
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$c = ['field' => $condition[0], 'value' => $condition[1], 'operator' => '=='];
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if (isset($condition[2])) {
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$c['operator'] = $condition[2];
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}
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$this->conditions []= (object) $c;
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}
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return $this;
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}
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protected function parseWhere(array $data): array {
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if ($this->conditions === null) {
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return $data;
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}
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foreach ($this->conditions as $condition) {
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$str = implode(' ', [
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$condition->field,
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$condition->operator,
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(is_string($condition->value)) ? "'" . $condition->value . "'" : $condition->value
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]);
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return array_filter($data, function($item) use ($str) {
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$bool = true;
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eval("\$bool = (\$item->" . $str . ');');
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return $bool;
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});
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}
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}
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protected $limits;
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public function limit(int $limit): Model {
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if ($this->limits === null) {
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$this->limits = (object) ['limit' => null, 'offset' => 0];
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}
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$this->limits->limit = $limit;
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return $this;
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}
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public function offset(int $offset): Model {
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if ($this->limits === null) {
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$this->limits = (object) ['limit' => null, 'offset' => 0];
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}
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$this->limits->offset = $offset;
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return $this;
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}
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protected function parseLimits(array $data): array {
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if ($this->limits === null or $this->limits->limit === null) {
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return $data;
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}
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return array_slice($data, $this->limits->offset, $this->limits->limit);
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}
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protected function getFilename(): string {
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$data = explode("\\", $this->class);
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return implode(DIRECTORY_SEPARATOR, [
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$this->data_folder,
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str_replace(' ', '_', mb_strtolower(array_pop($data))) . 's.json'
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]);
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}
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protected function build(): array {
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$filename = $this->getFilename();
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$data = json_decode(trim(file_get_contents($filename)));
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$data = $this->parseWhere($data);
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$data = $this->parseLimits($data);
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return $data;
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}
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protected function fillObject($data): BaseModel {
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$obj = new $this->class;
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$obj->map($data);
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$obj->setFactory($this);
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$obj->setImageFolder($this->image_folder);
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return $obj;
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}
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public function one(): BaseModel {
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$data = $this->limit(1)->build();
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$item = $data[0];
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$obj = $this->fillObject($item);
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return $obj;
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}
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public function many(): array {
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$data = $this->build();
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foreach ($data as &$item) {
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$obj = $this->fillObject($item);
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$item = $obj;
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}
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return $data;
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}
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public function array(): array {
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return $this->build();
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}
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public function create(string $class, $data) {
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$obj = new $class;
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$obj->map($data);
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$obj->setFactory($this);
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$obj->setImageFolder($this->image_folder);
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return $obj;
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}
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}
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55
provm/common/Implementation/Model.php
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55
provm/common/Implementation/Model.php
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@ -0,0 +1,55 @@
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<?php
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namespace ProVM\Common\Implementation;
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use ProVM\Common\Factory\Model as ModelFactory;
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abstract class Model implements \JsonSerializable {
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abstract public function map($data): Model;
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protected $factory;
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public function setFactory(ModelFactory $factory) {
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$this->factory = $factory;
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}
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public function __get(string $name) {
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if (!property_exists($this, $name)) {
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throw new \InvalidArgumentException($name . ' is not a property of ' . get_called_class());
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}
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return $this->$name;
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}
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public function save() {
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$filename = $this->getFilename();
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$data = json_decode(trim(file_Get_contents($filename)));
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if ($this->id === null) {
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$this->id = array_reduce($data, function($max, $item) {
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return (($max < $item->id) ? $item->id : $max);
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}, 0) + 1;
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$data []= $this->jsonSerialize();
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} else {
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foreach ($data as $i => $item) {
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if ($item->id == $this->id) {
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$data[$i] = $this->jsonSerialize();
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}
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}
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}
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$data = array_values($data);
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return (file_put_contents($filename, json_encode($data, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE)) !== false);
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}
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public function delete() {
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$filename = $this->getFilename();
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$data = json_decode(trim(file_Get_contents($filename)));
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foreach ($data as $i => $item) {
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if ($item->id == $this->id) {
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unset($data[$i]);
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}
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}
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$data = array_values($data);
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return (file_put_contents($filename, json_encode($data, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE)) !== false);
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}
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protected function getFilename(): string {
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$data = explode("\\", get_called_class());
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$folder = $this->factory->getFolder();
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return implode(DIRECTORY_SEPARATOR, [
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$folder,
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str_replace(' ', '_', mb_strtolower(array_pop($data))) . 's.json'
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]);
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}
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}
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