// @ts-ignore
import scrape from 'website-scraper';
// @ts-ignore
import PuppeteerPlugin from 'website-scraper-puppeteer';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import fs from 'node:fs';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

class CustomFilenameGeneratorPlugin {
    apply(registerAction: any) {
        registerAction('generateFilename', ({ resource }: any) => {
            const url = new URL(resource.url);
            const ext = path.extname(url.pathname);

            // Clean the path
            let safePath = url.pathname;
            if (safePath.endsWith('/')) {
                safePath += 'index.html';
            } else if (!ext && !resource.isHtml()) {
                // If no extension and not HTML, guess based on content type? 
                // But usually safe to leave as is or add extension if known.
            } else if (!ext && resource.isHtml()) {
                safePath += '.html';
            }

            // Handle query strings if needed (simplifying by ignoring them for static local files usually better, 
            // unless they determine content. For a clean clone, we usually ignore unique query params)
            // But if the site relies on routing via query params (e.g. ?page=2), we might want to encode them.
            // For now, let's keep it simple and clean.

            // Remove leading slash
            if (safePath.startsWith('/')) safePath = safePath.substring(1);

            // Sanitization
            safePath = safePath.replace(/[:*?"<>|]/g, '_');

            // External assets go to a separate folder to avoid collision
            // We can detect external by checking if the resource parent is different?
            // Actually, simply using the hostname mapping is safer.

            // However, the USER wants "local cloned pages".
            // If we just use the path, we merge everything into one root.
            // If there are collision (e.g. same path on different domains), this is bad.
            // But typically we clone ONE site.

            return { filename: safePath };
        });
    }
}

async function run() {
    const targetUrl = process.argv[2];
    if (!targetUrl) {
        console.error('Usage: npm run clone-website <URL> [output-dir]');
        process.exit(1);
    }

    const urlObj = new URL(targetUrl);
    const domain = urlObj.hostname;
    const safeDomain = domain.replace(/[^a-z0-9-]/gi, '_');
    const outputDir = process.argv[3]
        ? path.resolve(process.cwd(), process.argv[3])
        : path.resolve(__dirname, '../cloned-websites', safeDomain);

    if (fs.existsSync(outputDir)) {
        console.log(`Cleaning existing directory: ${outputDir}`);
        fs.rmSync(outputDir, { recursive: true, force: true });
    }

    console.log(`🚀 Starting recursive clone of ${targetUrl}`);
    console.log(`📂 Output: ${outputDir}`);

    const options = {
        urls: [targetUrl],
        directory: outputDir,
        recursive: true,
        maxDepth: 5,
        // Custom filename generation to avoid "https:/" folders
        plugins: [
            new PuppeteerPlugin({
                launchOptions: {
                    headless: true,
                    args: ['--no-sandbox', '--disable-setuid-sandbox', '--disable-dev-shm-usage']
                },
                scrollToBottom: { timeout: 10000, viewportN: 10 },
                blockNavigation: false
            }),
            new class LoggerPlugin {
                apply(registerAction: any) {
                    registerAction('onResourceSaved', ({ resource }: any) => {
                        console.log(`  💾 Saved: ${resource.url} -> ${resource.filename}`);
                    });
                    registerAction('onResourceError', ({ resource, error }: any) => {
                        console.error(`  ❌ Error: ${resource.url} - ${error.message}`);
                    });
                }
            },
            new class FilenamePlugin {
                apply(registerAction: any) {
                    registerAction('generateFilename', ({ resource }: any) => {
                        const u = new URL(resource.url);
                        let filename = u.pathname;

                        // normalize
                        if (filename.endsWith('/')) filename += 'index.html';
                        else if (!path.extname(filename) && resource.url.includes(domain)) filename += '/index.html'; // Assume folder if internal link without ext

                        // If it's an external asset, put it in a separate folder
                        if (u.hostname !== domain) {
                            filename = `_external/${u.hostname}${filename}`;
                        }

                        // Sanitize filename
                        filename = filename.split('/').map(part => part.replace(/[^a-z0-9._-]/gi, '_')).join('/');

                        // Remove leading slash
                        if (filename.startsWith('/')) filename = filename.substring(1);

                        // Handle "Unnamed page" by checking if empty
                        if (!filename || filename === 'index.html') return { filename: 'index.html' };

                        return { filename };
                    });
                }
            }
        ],

        urlFilter: (url: string) => {
            const u = new URL(url);
            const isTargetDomain = u.hostname === domain;
            const isGoogleFonts = u.hostname.includes('fonts.googleapis.com') || u.hostname.includes('fonts.gstatic.com');
            // Allow assets from anywhere
            const isAsset = /\.(css|js|png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot|mp4|webm|ico|json|webp)$/i.test(u.pathname);
            // Allow fonts/css from common CDNs if standard extension check fails
            const isCommonAsset = u.pathname.includes('/css/') || u.pathname.includes('/js/') || u.pathname.includes('/static/') || u.pathname.includes('/assets/') || u.pathname.includes('/uploads/');

            return isTargetDomain || isAsset || isCommonAsset || isGoogleFonts;
        },


        sources: [
            { selector: 'img', attr: 'src' },
            { selector: 'img', attr: 'srcset' },
            { selector: 'source', attr: 'src' },
            { selector: 'source', attr: 'srcset' },
            { selector: 'link[rel="stylesheet"]', attr: 'href' },
            { selector: 'link[rel="preload"]', attr: 'href' },
            { selector: 'link[rel="prefetch"]', attr: 'href' },
            { selector: 'script', attr: 'src' },
            { selector: 'video', attr: 'src' },
            { selector: 'video', attr: 'poster' },
            { selector: 'iframe', attr: 'src' },
            { selector: 'link[rel*="icon"]', attr: 'href' },
            { selector: 'link[rel="manifest"]', attr: 'href' },
            { selector: 'meta[property="og:image"]', attr: 'content' }
        ],

        request: {
            headers: {
                'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36'
            }
        }
    };

    try {
        // @ts-ignore
        const result = await scrape(options);
        console.log(`\n✅ Successfully cloned ${result.length} resources to ${outputDir}`);

        // Post-processing: Sanitize HTML to remove Next.js hydration scripts
        // This prevents the static site from trying to "hydrate" and breaking images/links
        console.log('🧹 Sanitizing HTML files...');
        sanitizeHtmlFiles(outputDir);

        console.log(`open "${path.join(outputDir, 'index.html')}"`);
    } catch (error) {
        console.error('❌ Error cloning website:', error);
        process.exit(1);
    }
}

function sanitizeHtmlFiles(dir: string) {
    const files = fs.readdirSync(dir);
    for (const file of files) {
        const fullPath = path.join(dir, file);
        if (fs.statSync(fullPath).isDirectory()) {
            sanitizeHtmlFiles(fullPath);
        } else if (file.endsWith('.html')) {
            let content = fs.readFileSync(fullPath, 'utf8');

            // Remove Next.js data script
            content = content.replace(/<script id="__NEXT_DATA__"[\s\S]*?<\/script>/gi, '');

            // Remove Next.js chunk scripts (hydration)
            // match <script src="..._next/static/chunks..." ...
            content = content.replace(/<script[^>]+src="[^"]*\/_next\/static\/chunks\/[^"]*"[^>]*><\/script>/gi, '');
            content = content.replace(/<script[^>]+src="[^"]*\/_next\/static\/[^"]*Manifest\.js"[^>]*><\/script>/gi, '');

            // Convert Breeze dynamic script/styles into actual tags if possible
            // match <div class="breeze-scripts-load" ...>URL</div>
            content = content.replace(/<div[^>]+class="breeze-scripts-load"[^>]*>([^<]+)<\/div>/gi, (match, url) => {
                if (url.endsWith('.css')) return `<link rel="stylesheet" href="${url}">`;
                return `<script src="${url}"></script>`;
            });

            // Inject Fonts (Fix for missing dynamic fonts)
            // We inject Inter and Montserrat as safe defaults for industrial/modern sites
            // Check specifically for a stylesheet link to google fonts
            const hasGoogleFontStylesheet = /<link[^>]+rel="stylesheet"[^>]+href="[^"]*fonts\.googleapis\.com/i.test(content);
            if (!hasGoogleFontStylesheet) {
                const fontLink = `<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@300;400;500;600;700&display=swap">`;
                const styleBlock = `<style>
                    :root { --main-font: 'Inter', sans-serif; --heading-font: 'Montserrat', sans-serif; }
                    body, .body-font, p, span, li, a { font-family: var(--main-font) !important; }
                    h1, h2, h3, h4, h5, h6, .title-font, .heading-font { font-family: var(--heading-font) !important; }
                </style>`;
                content = content.replace('</head>', `${fontLink}${styleBlock}</head>`);
            }

            // Force column layout on product pages
            if (content.includes('class="products')) {
                const layoutScript = `
                <script>
                document.addEventListener('DOMContentLoaded', function() {
                    const products = document.querySelector('.products');
                    if (products) {
                        products.classList.remove(...Array.from(products.classList).filter(c => c.startsWith('columns-')));
                        products.classList.add('columns-1');
                        products.setAttribute('data-n-desktop-columns', '1');
                    }
                });
                </script>`;
                content = content.replace('</body>', `${layoutScript}</body>`);
            }

            fs.writeFileSync(fullPath, content);
        }
    }
}

run();