#!/usr/bin/env php
<?php
/**
 * Strip WPBakery shortcodes from content while preserving inner text
 *
 * Usage: php strip-wpbakery-shortcodes.php < input.sql > output.sql
 * Or:    php strip-wpbakery-shortcodes.php --test "content with [vc_row]shortcodes[/vc_row]"
 */

function strip_wpbakery_shortcodes(string $content): string {
    // List of WPBakery shortcode prefixes to remove
    $prefixes = [
        'vc_',      // Visual Composer / WPBakery
        'rev_',     // Slider Revolution
        'ozy_',     // Theme-specific (ozy-diwine-essentials)
    ];

    // Build regex pattern for opening tags: [vc_anything attr="value"]
    $pattern_open = '/\[(' . implode('|', $prefixes) . ')[^\]]*\]/i';

    // Build regex pattern for closing tags: [/vc_anything]
    $pattern_close = '/\[\/(' . implode('|', $prefixes) . ')[^\]]*\]/i';

    // Remove opening tags
    $content = preg_replace($pattern_open, '', $content);

    // Remove closing tags
    $content = preg_replace($pattern_close, '', $content);

    // Clean up excessive newlines (more than 2 in a row)
    $content = preg_replace('/\n{3,}/', "\n\n", $content);

    // Clean up excessive spaces
    $content = preg_replace('/[ \t]{2,}/', ' ', $content);

    // Trim leading/trailing whitespace
    $content = trim($content);

    return $content;
}

/**
 * Process SQL dump, stripping shortcodes from post_content
 */
function process_sql_dump(string $sql): string {
    // Match INSERT INTO ... post_content patterns
    // This is a simplified approach - for production, consider using proper SQL parsing

    return preg_replace_callback(
        "/'((?:[^'\\\\]|\\\\.)*?)'/",
        function($matches) {
            $content = $matches[1];
            // Only process if it looks like it contains WPBakery shortcodes
            if (preg_match('/\[(vc_|rev_|ozy_)/', $content)) {
                $cleaned = strip_wpbakery_shortcodes(stripslashes($content));
                return "'" . addslashes($cleaned) . "'";
            }
            return $matches[0];
        },
        $sql
    );
}

// CLI handling
if (php_sapi_name() === 'cli') {
    $args = getopt('', ['test:', 'help', 'sql']);

    if (isset($args['help'])) {
        echo "Usage:\n";
        echo "  php strip-wpbakery-shortcodes.php --test \"content\"  Test stripping on a string\n";
        echo "  php strip-wpbakery-shortcodes.php --sql < dump.sql   Process SQL dump from stdin\n";
        echo "  php strip-wpbakery-shortcodes.php < input.txt        Process plain text from stdin\n";
        exit(0);
    }

    if (isset($args['test'])) {
        echo "Input:\n" . $args['test'] . "\n\n";
        echo "Output:\n" . strip_wpbakery_shortcodes($args['test']) . "\n";
        exit(0);
    }

    // Read from stdin
    $input = file_get_contents('php://stdin');

    if (isset($args['sql'])) {
        echo process_sql_dump($input);
    } else {
        echo strip_wpbakery_shortcodes($input);
    }
}