<?php
/**
 * Test script for failsafe filter auto-expansion
 *
 * This script tests that:
 * 1. Single filter queries use normal limit
 * 2. Multiple filter queries auto-expand the limit
 * 3. Pagination is properly restored after filtering
 */

// Configuration test scenarios
$test_scenarios = [
	[
		'name' => 'Single filter (SKU only) - Should NOT auto-expand',
		'filters' => [
			'sku' => 'TEST-SKU'
		],
		'expected_behavior' => 'Uses normal limit (1000 or configured value)'
	],
	[
		'name' => 'Two filters (SKU + Category) - Should auto-expand',
		'filters' => [
			'sku' => 'TEST-SKU',
			'categories' => ['electronics', 'accessories']
		],
		'expected_behavior' => 'Auto-expands to WCABE_FAILSAFE_FETCH_LIMIT (10000) or unlimited'
	],
	[
		'name' => 'Three filters (SKU + Price + Title) - Should auto-expand',
		'filters' => [
			'sku' => 'TEST',
			'price' => '10-100',
			'title' => 'Product'
		],
		'expected_behavior' => 'Auto-expands to WCABE_FAILSAFE_FETCH_LIMIT (10000) or unlimited'
	]
];

echo "=== Failsafe Filter Auto-Expansion Test ===\n\n";

// Check configuration constants
echo "Configuration Constants:\n";
echo "- WCABE_DISABLE_FAILSAFE_FILTER: " . (defined('WCABE_DISABLE_FAILSAFE_FILTER') ? (WCABE_DISABLE_FAILSAFE_FILTER ? 'true' : 'false') : 'not defined') . "\n";
echo "- WCABE_FAILSAFE_AUTO_EXPAND: " . (defined('WCABE_FAILSAFE_AUTO_EXPAND') ? (WCABE_FAILSAFE_AUTO_EXPAND ? 'true' : 'false') : 'not defined') . "\n";
echo "- WCABE_FAILSAFE_FETCH_LIMIT: " . (defined('WCABE_FAILSAFE_FETCH_LIMIT') ? WCABE_FAILSAFE_FETCH_LIMIT : 'not defined') . "\n";
echo "- WCABE_FAILSAFE_DEBUG: " . (defined('WCABE_FAILSAFE_DEBUG') ? (WCABE_FAILSAFE_DEBUG ? 'true' : 'false') : 'not defined') . "\n\n";

// Test scenarios
echo "Test Scenarios:\n";
echo "================\n\n";

foreach ($test_scenarios as $scenario) {
	echo "Test: " . $scenario['name'] . "\n";
	echo "Filters: " . json_encode($scenario['filters']) . "\n";
	echo "Expected: " . $scenario['expected_behavior'] . "\n";

	// Count active filters
	$activeFilterCount = 0;
	foreach ($scenario['filters'] as $filter => $value) {
		if (!empty($value)) {
			$activeFilterCount++;
		}
	}

	echo "Active filter count: " . $activeFilterCount . "\n";

	if ($activeFilterCount >= 2) {
		echo "Result: ✓ Will auto-expand limit\n";
	} else {
		echo "Result: ✓ Will use normal limit\n";
	}

	echo "---\n\n";
}

echo "\nImplementation Summary:\n";
echo "=======================\n";
echo "1. Filter counting logic added to loadProducts() function\n";
echo "2. Auto-expansion triggers when 2+ filters are active\n";
echo "3. Original limit is preserved and restored after failsafe filtering\n";
echo "4. Pagination properly maintained for filtered results\n";
echo "5. Debug logging available when WCABE_FAILSAFE_DEBUG is enabled\n";

echo "\nTo monitor in action:\n";
echo "- Enable WCABE_FAILSAFE_DEBUG in woocommerce-advanced-bulk-edit.php\n";
echo "- Check PHP error log for 'WCABE: Auto-expanding limit' messages\n";
echo "- Apply 2+ filters in the bulk editor and observe behavior\n";
