wip

src/Plugins/Tia/Contracts/State.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Plugins\Tia\Contracts;
+
+/**
+ * Storage contract for TIA's persistent state (graph, baselines, affected
+ * set, worker partials, coverage snapshots). Modelled as a flat key/value
+ * store of raw byte blobs so implementations can sit on top of whatever
+ * backend fits — a directory, a shared cache, a remote object store — and
+ * TIA's logic stays identical.
+ *
+ * @internal
+ */
+interface State
+{
+    /**
+     * Returns the stored blob for `$key`, or `null` when the key is unset
+     * or cannot be read.
+     */
+    public function read(string $key): ?string;
+
+    /**
+     * Atomically stores `$content` under `$key`. Existing value (if any) is
+     * replaced. Implementations SHOULD guarantee that concurrent readers
+     * never observe partial writes.
+     */
+    public function write(string $key, string $content): bool;
+
+    /**
+     * Removes `$key`. Returns true whether or not the key existed beforehand
+     * — callers should treat a `true` result as "the key is now absent",
+     * not "the key was present and has been removed."
+     */
+    public function delete(string $key): bool;
+
+    public function exists(string $key): bool;
+
+    /**
+     * Returns every key whose name starts with `$prefix`. Used to collect
+     * paratest worker partials (`tia-worker-<token>.json`, etc.) without
+     * exposing backend-specific glob semantics.
+     *
+     * @return list<string>
+     */
+    public function keysWithPrefix(string $prefix): array;
+}