Initial commit

src/State/PersistentState.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace NoccyLabs\FreshDocker\State;
+
+use Symfony\Component\Yaml\Yaml;
+
+class PersistentState
+{
+    private string $filename;
+
+    private array $state = [];
+
+    private bool $dirty = false;
+
+    public function __construct(string $filename)
+    {
+        $this->filename = $filename;
+        register_shutdown_function([$this,"flush"]);
+        if (file_exists($filename)) {
+            $this->state = Yaml::parseFile($filename);
+        }
+    }
+
+    public function flush()
+    {
+        if (!$this->dirty) return;
+        $yaml = Yaml::dump($this->state);
+        file_put_contents($this->filename."~", $yaml);
+        rename($this->filename."~", $this->filename);
+    }
+
+    public function set(string $key, $value)
+    {
+        $this->state[$key] = $value;
+        $this->dirty = true;
+    }
+
+    public function get(string $key, $default=null): mixed
+    {
+        return $this->state[$key] ?? $default;
+    }
+
+    public function unset(string $key)
+    {
+        unset($this->state[$key]);
+    }
+}