import readline from "readline";
import fs from "fs";
import dotenv from "dotenv";

dotenv.config();

const user = process.argv[2];

// ===============================
// BASE_URL DAL .env
// ===============================
const BASE_URL = process.env.BASE_URL;
if (!BASE_URL) {
    console.error("ERRORE: BASE_URL non definita in .env");
    process.exit(1);
}

// ===============================
// TOKEN JWT STATICO PER IL WATCHER
// ===============================
const WATCHER_TOKEN = process.env.WATCHER_TOKEN;

if (!WATCHER_TOKEN) {
    console.error("❌ ERRORE: WATCHER_TOKEN non definito nel .env");
    process.exit(1);
}

console.log(`Node attivo per utente: ${user}`);

const rl = readline.createInterface({
    input: process.stdin,
    crlfDelay: Infinity
});

// ===============================
// ESTENSIONI MEDIA
// ===============================
const photoExt = [".jpg", ".jpeg", ".png", ".gif", ".bmp", ".webp", ".tiff", ".heic", ".heif"];
const videoExt = [".mp4", ".mov", ".avi", ".mkv", ".webm", ".m4v"];

function isMediaFile(filename) {
    const lower = filename.toLowerCase();
    return photoExt.some(ext => lower.endsWith(ext)) ||
           videoExt.some(ext => lower.endsWith(ext));
}

// ===============================
// CHIAMATA A /auto_scan
// ===============================
async function callAutoScan(type, file, path, user) {

    const headers = {
        "Content-Type": "application/json",
        "Authorization": "Bearer " + WATCHER_TOKEN   // 🔥 token fisso
    };

    path = path.replace(/^\/app/, "");

    const res = await fetch(`${BASE_URL}/api_v1/auto_scan`, {
        method: "POST",
        headers,
        body: JSON.stringify({ type, file, path, user })
    });

    if (!res.ok) {
        console.error(`❌ Errore auto_scan: ${res.status}`);
    }

    return res.ok;
}

// ===============================
// LOGICA EVENTI
// ===============================
function startWatcher() {
    rl.on("line", line => {
        const parts = line.trim().split(/\s+/);

        const path = parts[0];
        const action = parts[1];
        const file = parts[2];

        if (!file) return;

        const isDir = action.includes("ISDIR");

        if (!isDir && !isMediaFile(file)) {
            console.log(`Ignorato (non media): ${file}`);
            return;
        }

        let type = null;

        if (action === "MOVED_TO,ISDIR") type = "ADD_DIR";
        else if (action === "MOVED_FROM,ISDIR") type = "DEL_DIR";
        else if (/^CLOSE_WRITE(,CLOSE)?$/.test(action)) type = "ADD";
        else if (action === "MOVED_TO") type = "ADD";
        else if (action === "MOVED_FROM") type = "DEL";
        else if (action === "DELETE") type = "DEL";
        else return;

        console.log(`${type} ${file} ${path} ${user}`);

        callAutoScan(type, file, path, user);
    });
}

// ===============================
// AVVIO WATCHER
// ===============================
console.log(`Watcher per ${user} avviato con token JWT`);
startWatcher();