From a6ea7b9cce6f53f3e8d1efa776360d35cae85209 Mon Sep 17 00:00:00 2001
From: Dave Mc Nicoll <info@mcnd.ca>
Date: Thu, 19 Jan 2023 01:48:31 +0000
Subject: [PATCH] - First commit

---
 LICENSE.md        | 21 ++++++++++++
 composer.json     | 21 ++++++++++++
 src/ApcuCache.php | 86 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 128 insertions(+)
 create mode 100644 LICENSE.md
 create mode 100644 composer.json
 create mode 100644 src/ApcuCache.php

diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..f1d1f0d
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,21 @@
+# The MIT License (MIT)
+
+Copyright (c) 2023 Dave Mc Nicoll
+
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+>
+> The above copyright notice and this permission notice shall be included in
+> all copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+> THE SOFTWARE.
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..f08e070
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "mcnd/kash",
+    "description": "A simple caching library making implementing PSR-16 interfaces.",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Dave Mc Nicoll",
+            "email": "mcndave@gmail.com"
+        }
+    ],
+    "require": {
+        "php": "^8.2",
+        "ext-apcu": "*"
+    },
+    "autoload": {
+        "psr-4": {
+            "Kash\\": "src/"
+        }
+    }
+}
diff --git a/src/ApcuCache.php b/src/ApcuCache.php
new file mode 100644
index 0000000..2aa24ad
--- /dev/null
+++ b/src/ApcuCache.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace Kash;
+
+use Psr\SimpleCache\CacheInterface;
+
+class ApcuCache implements CacheInterface
+{
+    const DEFAULT_NS_SEPARATOR = ':';
+
+    public function __construct(
+        protected string $namespace,
+        protected int $ttl,
+    ) {}
+
+    public function get(string $key, mixed $default = null): mixed
+    {
+        $value = apcu_fetch($this->fullkey($key), $status);
+
+        return $status === true ? $value : $default;
+    }
+
+    public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool
+    {
+        return apcu_store($this->fullkey($key), $value, $this->handleTTL($ttl));
+    }
+
+    public function delete(string $key): bool
+    {
+        return apcu_delete($this->fullkey($key));
+    }
+
+    public function clear() : bool
+    {
+        return apcu_clear_cache();
+    }
+
+    public function getMultiple(iterable $keys, mixed $default = null): iterable
+    {
+        $nsKeys = $this->fullkey($keys);
+
+        $result = apcu_fetch($nsKeys);
+
+        return array_combine(array_map(fn($e) => substr($e, strlen($this->namespace) + strlen(static::DEFAULT_NS_SEPARATOR)), $nsKeys), $result) + array_fill_keys($keys, $default);
+    }
+
+    public function setMultiple(iterable $values, null|int|\DateInterval $ttl = null): bool
+    {
+        $list = array_combine(array_map( [$this, 'prependNamespace' ], array_keys($values), $values);
+
+        $result = apcu_store($list, $this->ttl($ttl));
+
+        return in_array($result, [ [], true ], true);
+    }
+
+    public function deleteMultiple(iterable $keys): bool
+    {
+        return apcu_delete($this->fullkey($keys)) === [];
+    }
+
+    public function has(string $key): bool
+    {
+        return apcu_exists($this->fullkey($key));
+    }
+
+    protected function handleTTL(null|int|\DateInterval $ttl) : int
+    {
+        if ($ttl instanceof \DateInterval) {
+            $ttl = (new \DateTime)->add($ttl)->getTimestamp() - (new \DateTime)->getTimestamp();
+        }
+
+        $ttl ??= $this->ttl;
+
+        return (int) $ttl;
+    }
+
+    protected function fullkey(string|array $key) : string|array
+    {
+        return is_array($key) ? array_map([ $this, 'prependNamespace' ], $key) : $this->prependNamespace($key);
+    }
+
+    protected function prependNamespace(string $key) : string
+    {
+        return $this->namespace . static::DEFAULT_NS_SEPARATOR . $key;
+    }
+}