128 lines
2.3 KiB
PHP
128 lines
2.3 KiB
PHP
<?php
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namespace rosavox\helpers\storage;
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/**
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*/
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interface interface_
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{
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public function list_() : array;
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public function read(int $id);
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public function create($value) : int;
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public function update(int $id, $value) : void;
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public function delete(int $id) : void;
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}
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/**
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*/
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class class_jsonfile implements interface_
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{
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private string $path;
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private \Closure $id_encode;
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private \Closure $id_decode;
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public function __construct(
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string $path,
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\Closure $id_encode,
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\Closure $id_decode
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)
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{
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$this->path = $path;
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$this->id_encode = $id_encode;
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$this->id_decode = $id_decode;
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}
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private function get() : array
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{
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$content = (\file_exists($this->path) ? \file_get_contents($this->path) : null);
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return (
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($content === null)
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?
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['last_id' => 0, 'entries' => []]
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:
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\json_decode($content, true)
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);
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}
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private function put(array $data) : void
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{
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$content = \json_encode($data, \JSON_PRETTY_PRINT);
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\file_put_contents($this->path, $content);
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}
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public function list_() : array
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{
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$data = $this->get();
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return \array_map(
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fn ($id_encoded) => [
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'id' => ($this->id_decode)($id_encoded),
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'value' => $data['entries'][$id_encoded],
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],
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\array_keys($data['entries'])
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);
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}
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public function read(int $id)
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{
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$data = $this->get();
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$id_encoded = ($this->id_encode)($id);
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if (! \array_key_exists($id_encoded, $data['entries']))
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{
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throw (new \Exception('not found'));
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}
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else
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{
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return $data['entries'][$id_encoded];
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}
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}
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public function create($value) : int
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{
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$data = $this->get();
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$id = ($data['last_id'] + 1);
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$id_encoded = ($this->id_encode)($id);
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$data['last_id'] = $id;
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$data['entries'][$id_encoded] = $value;
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$this->put($data);
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return $id;
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}
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public function update(int $id, $value) : void
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{
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$data = $this->get();
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$id_encoded = ($this->id_encode)($id);
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if (! \array_key_exists($id_encoded, $data['entries']))
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{
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throw (new \Exception('not found'));
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}
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else
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{
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$data['entries'][$id_encoded] = $value;
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$this->put($data);
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}
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}
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public function delete(int $id) : void
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{
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$data = $this->get();
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$id_encoded = ($this->id_encode)($id);
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if (! \array_key_exists($id_encoded, $data['entries']))
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{
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throw (new \Exception('not found'));
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}
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else
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{
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unset($data['entries'][$id_encoded]);
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$this->put($data);
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}
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}
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}
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?>
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