1 files changed, 70 insertions, 0 deletions
diff --git a/src/Hook.php b/src/Hook.php
new file mode 100644
index 0000000..0b292ce
--- /dev/null
+++ b/src/Hook.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace ERPHP;
+
+class Hook
+{
+  /**
+   * @var array<string, array<int, callable[]>> $actions
+   */
+  private static array $actions;
+
+  /**
+   * @var array<string, array<int, callable[]>> $filters
+   */
+  private static array $filters;
+
+  /**
+   * @param string $name
+   * @param callable $function
+   */
+  public static function addAction(string $name, callable $function, int $priority = 10): void
+  {
+    self::$actions[$name][$priority][] = $function;
+  }
+
+  /**
+   * @param string $name
+   * @param array $parameters
+   */
+  public static function runAction(string $name, ...$parameters): void
+  {
+    $actions = self::$actions[$name] ?? [];
+
+    foreach ($actions as $priority => $functions) {
+      foreach ($functions as $function) {
+        call_user_func_array($function, $parameters);
+      }
+    }
+  }
+
+  /**
+   * @param string $name
+   * @param callable $function
+   */
+  public static function addFilter(string $name, callable $function, int $priority = 10): void
+  {
+    self::$filters[$name][$priority][] = $function;
+  }
+
+  /**
+   * @param string $name
+   * @param mixed $value
+   * @param array $parameters
+   *
+   * @return mixed
+   */
+  public static function applyFilter(string $name, mixed $value, ...$parameters): mixed
+  {
+    $filteredValue = $value;
+    $filters = self::$filters[$name] ?? [];
+
+    foreach ($filters as $priority => $functions) {
+      foreach ($functions as $function) {
+        $filteredValue = call_user_func_array($function, [$value, ...$parameters]);
+      }
+    }
+
+    return $filteredValue;
+  }
+}