import sanitizeHtml from 'sanitize-html';

/**
 * Sanitizes HTML content to prevent XSS attacks.
 * Use this before passing content to dangerouslySetInnerHTML.
 */
export function sanitizeHTML(html: string): string {
    if (!html) return '';
    
    // Remplacer les espaces insécables par des espaces normaux
    // Empêche le navigateur de considérer un paragraphe entier comme un seul mot
    const cleanHtml = html.replace(/ |\u00A0/g, ' ');
    
    return sanitizeHtml(cleanHtml, {
        allowedTags: [
            'p', 'br', 'b', 'i', 'em', 'strong', 'a', 'ul', 'ol', 'li', 
            'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'blockquote', 'span', 'div',
            'img', 'table', 'thead', 'tbody', 'tr', 'th', 'td'
        ],
        allowedAttributes: {
            'a': ['href', 'target', 'rel'],
            'img': ['src', 'alt'],
            '*': ['class', 'style']
        },
        selfClosing: ['img', 'br', 'hr', 'area', 'base', 'basefont', 'input', 'link', 'meta'],
        // Standard URLs only
        allowedSchemes: ['http', 'https', 'ftp', 'mailto', 'tel'],
    });
}