<?php
/**
 * Behavioural harness for \Jio\Core\RewriteBootstrap.
 *
 * WordPress stubs only: an option bag, a WP_Rewrite stub recording what the theme asked of
 * it, and an add_action/do_action pair so the hook wiring is exercised rather than assumed.
 */

namespace {
	define('ABSPATH', __DIR__);
	define('JIO_VERSION', '9.9.9-test');

	$GLOBALS['jio_test_options'] = [
		'permalink_structure' => '',
	];
	$GLOBALS['jio_test_set_permalink_calls'] = [];
	$GLOBALS['jio_test_flush_calls'] = [];
	$GLOBALS['jio_test_hooks'] = [];
}

namespace {
	function jio_test_reset(array $options): void {
		$GLOBALS['jio_test_options'] = $options;
		$GLOBALS['jio_test_set_permalink_calls'] = [];
		$GLOBALS['jio_test_flush_calls'] = [];
	}

	function get_option(string $key, $default = false) {
		return array_key_exists($key, $GLOBALS['jio_test_options'])
			? $GLOBALS['jio_test_options'][$key]
			: $default;
	}

	function update_option(string $key, $value): bool {
		$GLOBALS['jio_test_options'][$key] = $value;
		return true;
	}

	function delete_option(string $key): bool {
		unset($GLOBALS['jio_test_options'][$key]);
		return true;
	}

	function add_action(string $hook, $callback, int $priority = 10, int $args = 1): void {
		$GLOBALS['jio_test_hooks'][] = [
			'hook'     => $hook,
			'priority' => $priority,
			'method'   => is_array($callback) ? (string) $callback[1] : (string) $callback,
		];
	}

	function flush_rewrite_rules(bool $hard = true): void {
		$GLOBALS['jio_test_flush_calls'][] = $hard;
	}
}

namespace {
	if (!class_exists('WP_Rewrite')) {
		final class WP_Rewrite {
			public array $structures = [];

			public function set_permalink_structure(string $structure): void {
				$this->structures[] = $structure;
				// Core persists the option and refreshes in-memory state; the stub mirrors the
				// persistence half so assertions on the option bag stay meaningful.
				$GLOBALS['jio_test_options']['permalink_structure'] = $structure;
			}
		}
	}
}

namespace {
	require_once dirname(__DIR__, 2) . '/src/Core/RewriteBootstrap.php';

	$bootstrap = \Jio\Core\RewriteBootstrap::get_instance();
	$bootstrap->init();

	$result = [
		'hooks' => $GLOBALS['jio_test_hooks'],
	];

	// --- Case 1: fresh install, no permalink structure chosen yet.
	jio_test_reset(['permalink_structure' => '']);
	$wp_rewrite = new WP_Rewrite();
	$GLOBALS['wp_rewrite'] = $wp_rewrite;
	$bootstrap->ensure_permalink_structure();

	$result['fresh_install'] = [
		'option'          => get_option('permalink_structure'),
		'set_permalink'   => $wp_rewrite->structures,
	];

	// --- Case 2: administrator already chose a structure — must not be overridden.
	jio_test_reset(['permalink_structure' => '/%category%/%postname%.html']);
	$wp_rewrite = new WP_Rewrite();
	$GLOBALS['wp_rewrite'] = $wp_rewrite;
	$bootstrap->ensure_permalink_structure();

	$result['chosen_structure'] = [
		'option'        => get_option('permalink_structure'),
		'set_permalink' => $wp_rewrite->structures,
	];

	// --- Case 3: version bump flushes once, then is a no-op.
	jio_test_reset(['permalink_structure' => '/%postname%/']);
	$bootstrap->flush_when_version_changes();
	$first_flush = count($GLOBALS['jio_test_flush_calls']);
	$stamp = get_option('jio_rewrite_flushed_version');
	$bootstrap->flush_when_version_changes();

	$result['version_flush'] = [
		'flush_count'  => $first_flush,
		'stamp'        => $stamp,
		'repeat_flush' => count($GLOBALS['jio_test_flush_calls']) - $first_flush,
	];

	// --- Case 4: activation flush.
	$bootstrap->flush_on_activate();
	$result['activate'] = [
		'flush_count' => count($GLOBALS['jio_test_flush_calls']),
	];

	echo json_encode($result, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
	echo PHP_EOL;
}