<?php
/**
 * Test script for enhanced functionality (without WordPress dependencies)
 * 
 * This script tests the enhanced functionality of the Markdown Parser WP plugin:
 * 1. Relative image paths in content
 * 2. Field mapping configuration
 */

// Mock WordPress functions
function get_headers($url) {
    $headers = @get_headers($url);
    return $headers ?: ['HTTP/1.1 404 Not Found'];
}

// Test URL with relative image paths
$test_url = 'https://git.rpi-virtuell.de/Comenius-Institut/FOERBICO/raw/branch/main/Website/content/posts/2024-12-03-Konzeptionstag/index.md';

echo "Testing enhanced functionality with URL: $test_url\n\n";

// Test 1: Check for relative image paths in markdown content
echo "Test 1: Checking for relative image paths in markdown content\n";
try {
    // Get markdown content
    $content = file_get_contents($test_url);
    
    if ($content === false) {
        echo "✗ Failed to fetch content from URL\n";
    } else {
        echo "✓ Successfully fetched content from URL\n";
        
        // Extract YAML frontmatter and markdown content
        $parts = explode('---', $content);
        if (count($parts) < 3) {
            echo "✗ Invalid markdown format - YAML frontmatter not found\n";
        } else {
            $markdown = trim($parts[2]);
            echo "✓ Successfully extracted markdown content\n";
            
            // Check if markdown contains image references
            if (strpos($markdown, '![') !== false) {
                echo "✓ Found image references in markdown content\n";
                
                // Extract image references
                preg_match_all('/!\[(.*?)\]\((.*?)(?:\s+"(.*?)")?\)/', $markdown, $matches);
                $image_refs = $matches[2];
                
                echo "Found " . count($image_refs) . " image references:\n";
                foreach ($image_refs as $index => $ref) {
                    echo "  - Image " . ($index + 1) . ": $ref\n";
                    
                    // Check if it's a relative path
                    if (strpos($ref, 'http') !== 0) {
                        echo "    ✓ This is a relative path\n";
                        
                        // Resolve relative path
                        $base_url = dirname($test_url) . '/';
                        $full_url = $base_url . ltrim($ref, '/');
                        echo "    ✓ Resolved to: $full_url\n";
                        
                        // Check if URL is accessible
                        $headers = get_headers($full_url);
                        if (strpos($headers[0], '200') !== false) {
                            echo "    ✓ Image is accessible\n";
                        } else {
                            echo "    ✗ Image is not accessible\n";
                        }
                    } else {
                        echo "    ✓ This is an absolute path\n";
                    }
                }
            } else {
                echo "✗ No image references found in markdown content\n";
            }
        }
    }
} catch (Exception $e) {
    echo "✗ Error: " . $e->getMessage() . "\n";
}

echo "\n";

// Test 2: Verify BlocksConverter code for handling relative image paths
echo "Test 2: Verifying BlocksConverter code for handling relative image paths\n";

// Check if the BlocksConverter class has the necessary code
$blocks_converter_file = file_get_contents(__DIR__ . '/src/BlocksConverter.php');

if ($blocks_converter_file === false) {
    echo "✗ Failed to read BlocksConverter.php\n";
} else {
    echo "✓ Successfully read BlocksConverter.php\n";
    
    // Check if convert_markdown_to_blocks accepts original_url parameter
    if (strpos($blocks_converter_file, 'convert_markdown_to_blocks($markdown, $import_images = true, $original_url = \'\')') !== false) {
        echo "✓ convert_markdown_to_blocks method accepts original_url parameter\n";
    } else {
        echo "✗ convert_markdown_to_blocks method does not accept original_url parameter\n";
    }
    
    // Check if process_images_in_html handles relative paths
    if (strpos($blocks_converter_file, 'process_images_in_html($html, $original_url = \'\')') !== false) {
        echo "✓ process_images_in_html method accepts original_url parameter\n";
    } else {
        echo "✗ process_images_in_html method does not accept original_url parameter\n";
    }
    
    // Check for relative path handling code
    if (strpos($blocks_converter_file, 'if (!filter_var($src, FILTER_VALIDATE_URL) && !empty($original_url))') !== false) {
        echo "✓ Code for handling relative paths is present\n";
    } else {
        echo "✗ Code for handling relative paths is not present\n";
    }
}

echo "\n";

// Test 3: Verify PostCreator code for passing original_url to BlocksConverter
echo "Test 3: Verifying PostCreator code for passing original_url to BlocksConverter\n";

// Check if the PostCreator class has the necessary code
$post_creator_file = file_get_contents(__DIR__ . '/src/PostCreator.php');

if ($post_creator_file === false) {
    echo "✗ Failed to read PostCreator.php\n";
} else {
    echo "✓ Successfully read PostCreator.php\n";
    
    // Check if create_post_from_data passes original_url to BlocksConverter
    if (strpos($post_creator_file, '$options[\'original_url\']') !== false) {
        echo "✓ create_post_from_data method stores original_url in options\n";
    } else {
        echo "✗ create_post_from_data method does not store original_url in options\n";
    }
    
    // Check if BlocksConverter is called with original_url
    if (strpos($post_creator_file, 'BlocksConverter::convert_markdown_to_blocks(
            $markdown_content, 
            $options[\'import_images\'],
            $options[\'original_url\']') !== false) {
        echo "✓ BlocksConverter is called with original_url parameter\n";
    } else {
        echo "✗ BlocksConverter is not called with original_url parameter\n";
    }
}

echo "\n";

// Test 4: Verify Admin code for field mapping configuration UI
echo "Test 4: Verifying Admin code for field mapping configuration UI\n";

// Check if the Admin class has the necessary code
$admin_file = file_get_contents(__DIR__ . '/src/Admin.php');

if ($admin_file === false) {
    echo "✗ Failed to read Admin.php\n";
} else {
    echo "✓ Successfully read Admin.php\n";
    
    // Check for field mapping UI
    if (strpos($admin_file, '<div id="field-mapping-container">') !== false) {
        echo "✓ Field mapping UI is present in Admin.php\n";
    } else {
        echo "✗ Field mapping UI is not present in Admin.php\n";
    }
    
    // Check for AJAX handler for field mapping preview
    if (strpos($admin_file, 'ajax_get_field_mapping_preview') !== false) {
        echo "✓ AJAX handler for field mapping preview is present\n";
    } else {
        echo "✗ AJAX handler for field mapping preview is not present\n";
    }
    
    // Check if field mapping is passed to PostCreator
    if (strpos($admin_file, '$options[\'field_mapping\'] = $field_mapping;') !== false) {
        echo "✓ Field mapping is passed to PostCreator\n";
    } else {
        echo "✗ Field mapping is not passed to PostCreator\n";
    }
}

echo "\n";
echo "All tests completed.\n";