src/utils/markdown.ts

export function tidyMarkdown(markdown: string): string {

    // Step 1: Handle complex broken links with text and optional images spread across multiple lines
    let normalizedMarkdown = markdown.replace(/\[\s*([^\]\n]+?)\s*\]\s*\(\s*([^)]+)\s*\)/g, (match, text, url) => {
        // Remove internal new lines and excessive spaces within the text
        text = text.replace(/\s+/g, ' ').trim();
        url = url.replace(/\s+/g, '').trim();
        return `[${text}](${url})`;
    });

    normalizedMarkdown = normalizedMarkdown.replace(/\[\s*([^\]\n!]*?)\s*\n*(?:!\[([^\]]*)\]\((.*?)\))?\s*\n*\]\s*\(\s*([^)]+)\s*\)/g, (match, text, alt, imgUrl, linkUrl) => {
        // Normalize by removing excessive spaces and new lines
        text = text.replace(/\s+/g, ' ').trim();
        alt = alt ? alt.replace(/\s+/g, ' ').trim() : '';
        imgUrl = imgUrl ? imgUrl.replace(/\s+/g, '').trim() : '';
        linkUrl = linkUrl.replace(/\s+/g, '').trim();
        if (imgUrl) {
            return `[${text} ![${alt}](${imgUrl})](${linkUrl})`;
        } else {
            return `[${text}](${linkUrl})`;
        }
    });

    // Step 2: Normalize regular links that may be broken across lines
    normalizedMarkdown = normalizedMarkdown.replace(/\[\s*([^\]]+)\]\s*\(\s*([^)]+)\)/g, (match, text, url) => {
        text = text.replace(/\s+/g, ' ').trim();
        url = url.replace(/\s+/g, '').trim();
        return `[${text}](${url})`;
    });

    // Step 3: Replace more than two consecutive empty lines with exactly two empty lines
    normalizedMarkdown = normalizedMarkdown.replace(/\n{3,}/g, '\n\n');

    // Step 4: Remove leading spaces from each line
    normalizedMarkdown = normalizedMarkdown.replace(/^[ \t]+/gm, '');

    return normalizedMarkdown.trim();
}