#!/usr/bin/env node

const fs = require("fs");
const path = require("path");
const yaml = require("js-yaml");
const { scrapePage } = require("./lib/puppeteer");

if (process.argv.length < 4) {
    console.error("Usage: add_link_to_article.js <URL> <path_to_article>");
    process.exit(1);
}

const url = process.argv[2];
const articlePath = process.argv[3];
const indexPath = path.join(articlePath, "index.md");

// Vérifier si le fichier `index.md` existe
if (!fs.existsSync(indexPath)) {
    console.error(`❌ The article at ${indexPath} does not exist.`);
    process.exit(1);
}

// Charger le frontmatter YAML depuis `index.md`
const fileContent = fs.readFileSync(indexPath, "utf8");
const frontmatterMatch = fileContent.match(/^---\n([\s\S]+?)\n---/);

if (!frontmatterMatch) {
    console.error("❌ No valid frontmatter found in the article.");
    process.exit(1);
}

let frontmatter = yaml.load(frontmatterMatch[1]);
if (!frontmatter.links) frontmatter.links = [];

// Vérifier si le lien existe déjà
if (frontmatter.links.some(link => link.url === url)) {
    console.log(`⚠ The link "${url}" is already in the article.`);
    process.exit(0);
}

// Scraper la page pour récupérer le titre et la langue
(async () => {
    console.log(`🔍 Retrieving metadata for ${url}...`);
    const metadata = await scrapePage(url, "/dev/null"); // Ignore la capture d’écran pour ce script

    if (!metadata.title) {
        console.error("❌ Failed to retrieve page title. Skipping.");
        process.exit(1);
    }

    frontmatter.links.push({
        name: metadata.title,
        lang: metadata.lang || "unknown",
        url: url,
        official: false
    });

    // Reconstruire le frontmatter YAML
    const newFrontmatter = yaml.dump(frontmatter);
    const newContent = `---\n${newFrontmatter}---\n${fileContent.replace(frontmatterMatch[0], "").trim()}`;

    // Écrire le fichier
    fs.writeFileSync(indexPath, newContent, "utf8");

    console.log(`✔ Link successfully added to ${indexPath}`);
})();