<?php

use AKSRT\Ledger\OperationKey;
use PHPUnit\Framework\TestCase;

final class OperationKeyTest extends TestCase {
	public function test_request_key_requires_uuid_header(): void {
		$error = OperationKey::from_request(new WP_REST_Request(), 'transfer', 9);
		self::assertInstanceOf(WP_Error::class, $error);
		self::assertSame('aksrt_idempotency_key', $error->get_error_code());
		self::assertSame(400, $error->get_error_data()['status']);
	}

	public function test_request_key_is_scoped_to_actor_and_operation(): void {
		$request = new WP_REST_Request(['Idempotency-Key' => '550E8400-E29B-41D4-A716-446655440000']);
		self::assertSame(
			'client-transfer:9:550e8400-e29b-41d4-a716-446655440000',
			OperationKey::from_request($request, 'transfer', 9)
		);
	}

	public function test_deterministic_key_is_stable_and_length_bounded(): void {
		$key = OperationKey::deterministic('Revenue Settle', [42, str_repeat('A', 300)]);
		self::assertSame($key, OperationKey::deterministic('Revenue Settle', [42, str_repeat('A', 300)]));
		self::assertLessThanOrEqual(191, strlen($key));
		self::assertMatchesRegularExpression('/^[a-z0-9:._-]+$/', $key);
	}
}