vlw.se/api/endpoints/notes/GET.php

<?php

	use Reflect\Path;
	use Reflect\Response;
	use ReflectRules\Type;
	use ReflectRules\Rules;
	use ReflectRules\Ruleset;

	const GET_PARAM_NOTE = "id";

	class GET_Notes {
		protected readonly Ruleset $ruleset;

		public function __construct() {
			$this->ruleset = new Ruleset(strict: true);

			$this->ruleset->GET([
				(new Rules(GET_PARAM_NOTE))
					->required()
					->type(Type::STRING)
					->min(1)
			]);

			$this->ruleset->validate_or_exit();
		}

		private function get_path(): string {
			$base_path = substr($_ENV["notes"]["md_file_dir"], -1, 1) === "/" ? $_ENV["notes"]["md_file_dir"] : $_ENV["notes"]["md_file_dir"] . "/";

			return "{$base_path}{$_GET[GET_PARAM_NOTE]}.md";
		}

		public function exists(): bool {
			return is_readable($this->get_path());
		}

		public function read(): string {
			return file_get_contents($this->get_path());
		}

		public function main(): Response {
			return $this->exists()
				? new Response($this->read(), 200, "text/plain")
				: new Response("Note not found", 404);
		}
	}