/**
 * telegram.core.js - Bot Telegram ottimizzato per MEB SignalK
 * Gestione utenti, comandi e live updates
 */

const fs = require("fs");
const path = require("path");
const { 
    encrypt, 
    decrypt, 
    generateToken,
    generateReadableToken,
    encryptLog, 
    decryptLog,
    loadSecureFile,
    saveSecureFile 
} = require("../tools/crypt");

const TelegramBot = require('node-telegram-bot-api');

function getSK(path) {
    if (!app) return null;
    const v = app.getSelfPath(path);
    return v && v.value !== undefined && v.value !== null ? v.value : null;
}

// ==================== INIZIALIZZAZIONE BOT ====================
const BOT_TOKEN = process.env.TELEGRAM_BOT_TOKEN;
let bot = null;

function initBot() {
    if (!BOT_TOKEN) {
        console.warn("[Telegram] BOT_TOKEN non impostato: bot disabilitato.");
        return null;
    }

    // Riusa istanza esistente se disponibile
    if (global.__meb_telegram_bot) {
        bot = global.__meb_telegram_bot;
        console.log("[Telegram] Riutilizzo istanza bot esistente");
    } else {
        bot = new TelegramBot(BOT_TOKEN, { polling: true });
        global.__meb_telegram_bot = bot;
        console.log("[Telegram] Nuova istanza bot creata");
    }

    // Registra handlers solo una volta
    if (!global.__meb_telegram_handlers) {
        global.__meb_telegram_handlers = true;
        registerHandlers();
        console.log("[Telegram] Handlers registrati");
    }

    return bot;
}

// Inizializza all'import
bot = initBot();

// ==================== CONFIGURAZIONE ====================
const CONFIG = {
    filesPerPage: 8,
    liveUpdateInterval: 3000,
    fileExpirationTime: 10
};

const telegram_users_file = path.join(__dirname, "..", "telegram_users.json");
const logs_references_file = path.join(__dirname, "..", "datasetModels/logs_references.json");
const authorized_admins_file = path.join(__dirname, "..", "authorized_admins.txt");

let app = null;

// Maps per gestione timer e stati
const liveParamIntervals = new Map();
const keyExpirationTimers = new Map();

// ==================== GESTIONE FILE SENSIBILI ====================

function loadAuthorizedAdmins() {
    try {
        if (!fs.existsSync(authorized_admins_file)) {
            return new Set();
        }
        const content = fs.readFileSync(authorized_admins_file, 'utf8');
        const admins = content
            .split('\n')
            .map(line => line.trim())
            .filter(line => line && !line.startsWith('#'));
        return new Set(admins);
    } catch (error) {
        console.error('[Telegram] Errore caricamento admin:', error.message);
        return new Set();
    }
}

function saveAuthorizedAdmins(admins) {
    try {
        const adminArray = Array.from(admins);
        const content = '# Authorized Admin ChatIDs (one per line)\n' + adminArray.join('\n');
        fs.writeFileSync(authorized_admins_file, content, 'utf8');
        return true;
    } catch (error) {
        console.error('[Telegram] Errore salvataggio admin:', error.message);
        return false;
    }
}

function isAdmin(chatID) {
    const admins = loadAuthorizedAdmins();
    return admins.has(String(chatID));
}

function loadUsers() {
    return loadSecureFile(telegram_users_file, []);
}

function saveUsers(users) {
    saveSecureFile(telegram_users_file, users);
}

function loadLogsReferences() {
    return loadSecureFile(logs_references_file, { references: [] });
}

function saveLogsReferences(data) {
    saveSecureFile(logs_references_file, data);
}

function isAuthenticated(chatID) {
    const user = getUserByChatID(chatID);
    return user && user.hasLoggedYet;
}

function createNewUser(permissions = ["basic"]) {
    const users = loadUsers();
    const newUser = {
        token: generateReadableToken(24),
        chatID: null,
        isAuthorized: permissions,
        hasLoggedYet: false
    };
    users.push(newUser);
    saveUsers(users);
    return newUser;
}

function login(token, chatID) {
    const users = loadUsers();
    const userIDX = users.findIndex(u => u.token === token);
    
    if (userIDX === -1) {
        throw new Error("Token non valido");
    }
    
    const user = users[userIDX];
    
    if (user.hasLoggedYet && user.chatID && user.chatID !== String(chatID)) {
        throw new Error("Questo token è già associato ad un altro account");
    }
    
    if (!user.hasLoggedYet) {
        const newToken = generateReadableToken(32);
        user.token = newToken;
        user.hasLoggedYet = true;
        user.chatID = String(chatID);
        users[userIDX] = user;
        saveUsers(users);
        return { ...user, isFirstLogin: true, newToken };
    }
    
    user.chatID = String(chatID);
    users[userIDX] = user;
    saveUsers(users);
    return { ...user, isFirstLogin: false };
}

function logout(chatID) {
    const users = loadUsers();
    const userIDX = users.findIndex(u => u.chatID === String(chatID));
    
    if (userIDX === -1) {
        return null;
    }
    
    saveUsers(users);
    return users[userIDX];
}

function getUserWith(token) {
    const users = loadUsers();
    return users.find(u => u.token === token);
}

function getUserByChatID(chatID) {
    const users = loadUsers();
    return users.find(u => u.chatID === String(chatID));
}

async function linkBot(appInstance) {
    app = appInstance;
    if (!bot) {
        console.warn("[MEB TELEGRAM] linkBot chiamato senza TOKEN: ritorno null.");
        return null;
    }
    return bot;
}

function fetchFiles(chatId, page = 0) {
    const logDirectory = path.join(__dirname, "..", "datasetModels/saved_datas");

    try {
        const logsData = loadLogsReferences();
        const registeredFiles = new Set((logsData.references || []).map(r => r.name));

        const items = fs.readdirSync(logDirectory);

        const files = items.filter(item => {
            const fullPath = path.join(logDirectory, item);
            return fs.statSync(fullPath).isFile() && registeredFiles.has(item);
        });

        if (files.length === 0) {
            bot.sendMessage(chatId, "📂 Non ci sono log salvati.");
            return;
        }

        const sortedFiles = files
            .map(file => ({
                name: file,
                time: fs.statSync(path.join(logDirectory, file)).mtime.getTime()
            }))
            .sort((a, b) => b.time - a.time)
            .map(file => file.name);

        const totalPages = Math.ceil(sortedFiles.length / CONFIG.filesPerPage);
        let currentPage = page;
        if (currentPage < 0) currentPage = 0;
        if (currentPage > totalPages - 1) currentPage = totalPages - 1;

        const startIdx = currentPage * CONFIG.filesPerPage;
        const endIdx = startIdx + CONFIG.filesPerPage;
        const pageFiles = sortedFiles.slice(startIdx, endIdx);

        const fileButtons = pageFiles.map(file => [
            { text: `📄 ${file}`, callback_data: `request_file_${file}` }
        ]);

        const navigationButtons = [];

        if (totalPages > 1) {
            const navRow = [];
            if (currentPage > 0) {
                navRow.push({ text: "←", callback_data: `page_${currentPage - 1}` });
            }
            navRow.push({ text: `📖 ${currentPage + 1}/${totalPages}`, callback_data: `page_info` });
            if (currentPage < totalPages - 1) {
                navRow.push({ text: "→", callback_data: `page_${currentPage + 1}` });
            }
            navigationButtons.push(navRow);
        }

        navigationButtons.push([{ text: "Annulla", callback_data: "dismiss" }]);

        bot.sendMessage(chatId, 
            `📥 *Logs di Bordo*\n` +
            `Ogni file corrisponde ad una *sessione*. Seleziona un file per scaricarlo.\n` +
            `⚠️ Avrai solo *10 secondi* per salvare file e chiave.`,
            {
                parse_mode: 'Markdown',
                reply_markup: { inline_keyboard: [...fileButtons, ...navigationButtons] }
            }
        );

    } catch (error) {
        bot.sendMessage(chatId, `Errore lettura directory: ${error.message}`);
    }
}

function getCurrentPosition() {
    if (!app) return null;
    const position = app.getSelfPath('navigation.position');
    if (!position) return null;
    return {
        latitude: position.value.latitude,
        longitude: position.value.longitude,
    };
}

async function send(message) {
    if (!bot) return;
    const users = loadUsers();
    const loggedUsers = users.filter(u => u.hasLoggedYet && u.chatID);

    for (const user of loggedUsers) {
        try {
            await bot.sendMessage(user.chatID, message);
        } catch (error) {
            console.error(`[Telegram] Send error to ${user.chatID}:`, error.message);
        }
    }
}

// ==================== RENDER FUNCTIONS ====================

function renderPositionText() {
    if (!app) return "❌ App non disponibile";
    
    const pos = app.getSelfPath('navigation.position')?.value;
    const sog = getSK('navigation.speedOverGround');
    const cog = getSK('navigation.courseOverGroundTrue');
    const heading = getSK('navigation.headingTrue');
    
    const lat = pos?.latitude?.toFixed(5) ?? "N/A";
    const lon = pos?.longitude?.toFixed(5) ?? "N/A";
    const speed = sog != null ? (sog * 1.94384).toFixed(1) : "N/A"; // m/s to knots
    const course = cog != null ? (cog * 180 / Math.PI).toFixed(0) : "N/A"; // rad to deg
    const headingDeg = heading != null ? (heading * 180 / Math.PI).toFixed(0) : "N/A";
    
    return `📍 *Posizione & Velocità*\n\n` +
        `Latitudine: \`${lat}\`\n` +
        `Longitudine: \`${lon}\`\n` +
        `SOG: ${speed} kn\n` +
        `COG: ${course}°\n` +
        `Heading: ${headingDeg}°`;
}

function renderWindText() {
    const speed = getSK('meb.wind.speed');
    const direction = getSK('meb.wind.direction');
    
    return `🌬️ *Vento*\n\n` +
        `Velocità: ${speed} km/h\n` +
        `Direzione: ${direction}°\n`;
}

function renderWavesText() {
    
    const height = getSK('meb.waves.height');
    const period = getSK('meb.waves.period');
    const dir = getSK('meb.waves.direction');
    
    return `🌊 *Onde*\n\n` +
        `Altezza: ${height} m\n` +
        `Periodo: ${period} s\n` +
        `Direzione: ${dir}°`;
}

function renderForecastsText() {
    const temp = getSK('meb.temperature');
    const humidity = getSK('meb.humidity');
    const pressure = getSK('meb.pressure');
    const rain = getSK('meb.precipitation');
    return `⛅️ *Previsioni Meteo*\n\n` +
        `Temperatura: ${temp} °C\n` +
        `Umidità: ${humidity} %\n` +
        `Pressione: ${pressure} hPa\n`;
}

function renderBatteriesText() {

    const voltage = getSK('electrical.batteries.traction.voltage');
    const current = getSK('electrical.batteries.traction.current');
    const soc = getSK('electrical.batteries.traction.stateOfCharge');
    const power = getSK('electrical.batteries.traction.power');
    
    return `🔋 *Batterie*\n\n` +
        `Tensione: ${voltage?.toFixed(1) ?? "N/A"} V\n` +
        `Corrente: ${current?.toFixed(1) ?? "N/A"} A\n` +
        `SOC: ${soc != null ? (soc * 100).toFixed(0) : "N/A"} %\n` +
        `Potenza: ${power?.toFixed(0) ?? "N/A"} W`;
}

function renderDashboardText() {
    const posText = renderPositionText()
    const windText = renderWindText()
    const wavesText = renderWavesText()
    const forecastText = renderForecastsText()
    const battText = renderBatteriesText()
    
    return `📊 *Dashboard Completa*\n` +
        `\n${posText}\n\n` +
        `\n${forecastText}\n\n` +
        `\n${windText}\n\n` +
        `\n${wavesText}\n\n` +
        `\n${battText}`;
}

// ==================== REGISTRAZIONE HANDLERS ====================

function registerHandlers() {
    if (!bot) return;

    // Handler: /start
    bot.onText(/\/start/, (msg) => {
        const chatId = msg.chat.id;

        if (isAuthenticated(chatId)) {
            const menu = {
                keyboard: [
                    [{ text: "📊 Dashboard" }],
                    [{ text: "Parametri di Bordo" }],
                    [{ text: "File di Logs" }],
                    [{ text: "Genera un nuovo log" }],
                    [{ text: "Stato dei Log" }]
                ],
                resize_keyboard: true,
                one_time_keyboard: false
            };

            bot.sendMessage(chatId, 
                "Benvenuto nel Data Console.\n" +
                "• Visualizza i dati del computer di bordo\n" +
                "• Ricevi aggiornamenti su parametri a scelta\n" +
                "• Scarica i file di log della barca",
                { parse_mode: 'Markdown', reply_markup: menu }
            );
        } else {
            bot.sendMessage(chatId, 
                "Benvenuto nel MEB Data Console!\n" +
                "Per accedere ai dati è necessario un token di accesso.",
                { parse_mode: 'Markdown' }
            );

            bot.sendMessage(chatId, "👤 Login", {
                reply_markup: {
                    inline_keyboard: [
                        [{ text: "❓ Come ottengo un token", callback_data: "token_login_question" }],
                        [{ text: "🔑 Ho un token", callback_data: "token_ready" }]
                    ]
                },
                parse_mode: 'Markdown'
            });
        }
    });

    // Menu testuale
    bot.onText(/📊 Dashboard/, (msg) => {
        const chatId = msg.chat.id;
        if (!isAuthenticated(chatId)) {
            bot.sendMessage(chatId, "Effettua prima il login con /login <token>");
            return;
        }
        
        const dashboardMsg = renderDashboardText();
        bot.sendMessage(chatId, dashboardMsg, {
            parse_mode: 'Markdown',
            reply_markup: {
                inline_keyboard: [
                    [{ text: "🔄 Aggiorna", callback_data: "refresh_dashboard" }],
                    [{ text: "📡 Live (3s)", callback_data: "live_dashboard" }]
                ]
            }
        });
    });

    bot.onText(/File di Logs/, (msg) => {
        const chatId = msg.chat.id;
        if (!isAuthenticated(chatId)) {
            bot.sendMessage(chatId, "Effettua prima il login con /login <token>");
            return;
        }
        fetchFiles(chatId, 0);
    });

    bot.onText(/Parametri di Bordo/, (msg) => {
        const chatId = msg.chat.id;

        if (!isAuthenticated(chatId)) {
            bot.sendMessage(chatId, "Effettua il login con /login <token>");
            return;
        }

        bot.sendMessage(chatId, "*Parametri di Bordo*\nQui potrai visualizzare i parametri attuali del computer di bordo. Scegli il parametro che vuoi visualizzare dal menu qui sotto.", {
            parse_mode: 'Markdown',
            reply_markup: {
                inline_keyboard: [
                    [{ text: "📊 Dashboard", callback_data: "get_dashboard" }],
                    [{ text: "⛅️ Meteo", callback_data: "get_forecasts" }],
                    [{ text: "📍 Posizione", callback_data: "get_position" }],
                    [{ text: "🌬️ Vento", callback_data: "get_wind" }],
                    [{ text: "🌊 Onde", callback_data: "get_waves" }],
                    [{ text: "🔋 Batterie", callback_data: "get_batteries" }],
                    [{ text: "Annulla", callback_data: "dismiss" }]
                ]
            }
        });
    });

    // Login
    bot.onText(/\/login\s+(.+)/, (msg, match) => {
        const chatID = msg.chat.id;
        const token = (match && match[1] || "").trim();

        if (!token) {
            bot.sendMessage(chatID, "Inserisci il token: /login <token>");
            return;
        }

        try {
            const result = login(token, chatID);
            if (!result) {
                bot.sendMessage(chatID, "Token non valido.");
                return;
            }

            if (result.isFirstLogin) {
                bot.sendMessage(chatID, 
                    `*Primo accesso completato!*\n\n` +
                    `Il tuo nuovo token permanente:\n\`${result.newToken}\`\n\n` +
                    `Salvalo! Non potrà essere usato da altri account.`,
                    { parse_mode: 'Markdown' }
                );
            } else {
                bot.sendMessage(chatID, "✅ Login effettuato!");
            }

            const menu = {
                keyboard: [
                    [{ text: "📊 Dashboard" }],
                    [{ text: "Parametri di Bordo" }],
                    [{ text: "File di Logs" }],
                    [{ text: "Genera un nuovo log" }],
                    [{ text: "Stato dei Log" }]
                ],
                resize_keyboard: true
            };

            bot.sendMessage(chatID, "Menu principale:", { reply_markup: menu });
        } catch (error) {
            bot.sendMessage(chatID, `❌ ${error.message}`);
        }
    });

    bot.onText(/\/logout/, (msg) => {
        const chatID = msg.chat.id;
        const user = logout(chatID);
        if (!user) {
            bot.sendMessage(chatID, "Non sei loggato.");
            return;
        }
        bot.sendMessage(chatID, "Logout effettuato. Usa /login <token> per rientrare.");
    });

    // Admin commands
    bot.onText(/\/newuser(?:\s+(.*))?/, (msg, match) => {
        const chatID = msg.chat.id;
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        const permissionsArg = (match && match[1] || "").trim();
        const permissions = permissionsArg 
            ? permissionsArg.split(',').map(p => p.trim()).filter(p => p)
            : ["basic"];
        
        try {
            const newUser = createNewUser(permissions);
            bot.sendMessage(chatID, 
                `✅ *Nuovo utente creato*\n\nToken: \`${newUser.token}\``,
                { parse_mode: 'Markdown' }
            );
        } catch (error) {
            bot.sendMessage(chatID, `❌ ${error.message}`);
        }
    });

    bot.onText(/\/addadmin\s+(\d+)/, (msg, match) => {
        const chatID = msg.chat.id;
        const newAdminID = match && match[1];
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        const admins = loadAuthorizedAdmins();
        if (admins.has(newAdminID)) {
            bot.sendMessage(chatID, "Già admin.");
            return;
        }
        
        admins.add(newAdminID);
        saveAuthorizedAdmins(admins);
        bot.sendMessage(chatID, `✅ Admin \`${newAdminID}\` aggiunto.`, { parse_mode: 'Markdown' });
    });

    bot.onText(/\/removeadmin\s+(\d+)/, (msg, match) => {
        const chatID = msg.chat.id;
        const adminToRemove = match && match[1];
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        if (adminToRemove === String(chatID)) {
            bot.sendMessage(chatID, "Non puoi rimuovere te stesso.");
            return;
        }
        
        const admins = loadAuthorizedAdmins();
        if (!admins.has(adminToRemove)) {
            bot.sendMessage(chatID, "Non è admin.");
            return;
        }
        
        admins.delete(adminToRemove);
        saveAuthorizedAdmins(admins);
        bot.sendMessage(chatID, `✅ Admin \`${adminToRemove}\` rimosso.`, { parse_mode: 'Markdown' });
    });

    bot.onText(/\/listusers/, (msg) => {
        const chatID = msg.chat.id;
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        const users = loadUsers();
        if (users.length === 0) {
            bot.sendMessage(chatID, "Nessun utente.");
            return;
        }
        
        let message = `👥 *Utenti:* ${users.length}\n\n`;
        users.forEach((user, idx) => {
            const status = user.hasLoggedYet ? '✅' : '⏳';
            message += `${idx + 1}. ${status} \`${user.chatID || 'N/A'}\`\n`;
        });
        
        bot.sendMessage(chatID, message, { parse_mode: 'Markdown' });
    });

    bot.onText(/\/mychatid/, (msg) => {
        bot.sendMessage(msg.chat.id, `ChatID: \`${msg.chat.id}\``, { parse_mode: 'Markdown' });
    });

    // Interval control
    bot.onText(/\/changei\s+(log|api)\s+(\d+)/, (msg, match) => {
        const chatID = msg.chat.id;
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        const type = match[1];
        const seconds = parseInt(match[2], 10);
        
        if (isNaN(seconds) || seconds < 1) {
            bot.sendMessage(chatID, "❌ Secondi non validi (min 1).");
            return;
        }
        
        const newIntervalMs = seconds * 1000;
        
        // Debug: verifica stato app
        if (!app) {
            bot.sendMessage(chatID, "❌ App non inizializzata. Riprova tra qualche secondo.");
            console.error('[Telegram] app è null in change_interval');
            return;
        }
        
        if (!app.intervalControl) {
            bot.sendMessage(chatID, "❌ Sistema intervalControl non disponibile. Il plugin potrebbe non essere ancora avviato.");
            console.error('[Telegram] app.intervalControl non esiste');
            return;
        }
        
        try {
            const result = app.intervalControl.updateInterval(type, newIntervalMs);
            
            if (result) {
                const typeLabel = type === 'log' ? 'Log recording' : 'OpenMeteo API';
                bot.sendMessage(chatID, 
                    `✅ *${typeLabel}* aggiornato a *${seconds}s*`,
                    { parse_mode: 'Markdown' }
                );
            } else {
                bot.sendMessage(chatID, "❌ Tipo non valido. Usa: `log` o `api`", { parse_mode: 'Markdown' });
            }
        } catch (error) {
            console.error('[Telegram] Errore change_interval:', error);
            bot.sendMessage(chatID, `❌ Errore: ${error.message}`);
        }
    });

    bot.onText(/\/intervals/, (msg) => {
        const chatID = msg.chat.id;
        
        if (!isAdmin(chatID)) {
            bot.sendMessage(chatID, "⛔ Non autorizzato.");
            return;
        }
        
        if (!app) {
            bot.sendMessage(chatID, "❌ App non inizializzata.");
            return;
        }
        
        if (!app.intervalControl) {
            bot.sendMessage(chatID, "❌ Sistema intervalControl non disponibile.");
            return;
        }
        
        try {
            const intervals = app.intervalControl.getIntervals();
            
            bot.sendMessage(chatID, 
                `⏱️ *Intervalli Attuali*\n\n` +
                `📝 Log: *${intervals.log_interval / 1000}s*\n` +
                `🌤️ API: *${intervals.openmeteo_interval / 1000}s*\n\n` +
                `Per modificare:\n` +
                `\`/changei log <sec>\`\n` +
                `\`/changei api <sec>\``,
                { parse_mode: 'Markdown' }
            );
        } catch (error) {
            console.error('[Telegram] Errore intervals:', error);
            bot.sendMessage(chatID, `❌ Errore: ${error.message}`);
        }
    });

    // Callback query handler
    bot.on('callback_query', async (query) => {
        const chatId = query.message.chat.id;
        const messageId = query.message.message_id;
        const data = query.data;

        await bot.answerCallbackQuery(query.id);

        if (!isAuthenticated(chatId) && !['token_login_question', 'token_ready'].includes(data)) {
            bot.sendMessage(chatId, "Effettua prima il login.");
            return;
        }

        switch (data) {
            case 'dismiss':
                bot.deleteMessage(chatId, messageId).catch(() => {});
                break;

            case 'token_login_question':
                bot.sendMessage(chatId, 
                    "Per ottenere un token, contatta un amministratore del sistema."
                );
                break;

            case 'token_ready':
                bot.sendMessage(chatId, "Usa: /login <token>");
                break;

            case 'get_dashboard':
            case 'refresh_dashboard':
                bot.editMessageText(renderDashboardText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: {
                        inline_keyboard: [
                            [{ text: "🔄 Aggiorna", callback_data: "refresh_dashboard" }],
                            [{ text: "📡 Live (3s)", callback_data: "live_dashboard" }],
                            [{ text: "⏹️ Chiudi", callback_data: "dismiss" }]
                        ]
                    }
                }).catch(() => {});
                break;

            case 'live_dashboard':
                // Ferma eventuali live precedenti
                if (liveParamIntervals.has(chatId)) {
                    clearInterval(liveParamIntervals.get(chatId));
                }
                
                const interval = setInterval(() => {
                    bot.editMessageText(renderDashboardText(), {
                        chat_id: chatId,
                        message_id: messageId,
                        parse_mode: 'Markdown',
                        reply_markup: {
                            inline_keyboard: [
                                [{ text: "⏹️ Stop Live", callback_data: "stop_live" }]
                            ]
                        }
                    }).catch(() => {
                        clearInterval(interval);
                        liveParamIntervals.delete(chatId);
                    });
                }, CONFIG.liveUpdateInterval);
                
                liveParamIntervals.set(chatId, interval);
                break;

            case 'stop_live':
                if (liveParamIntervals.has(chatId)) {
                    clearInterval(liveParamIntervals.get(chatId));
                    liveParamIntervals.delete(chatId);
                }
                bot.editMessageText(renderDashboardText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: {
                        inline_keyboard: [
                            [{ text: "🔄 Aggiorna", callback_data: "refresh_dashboard" }],
                            [{ text: "📡 Live (3s)", callback_data: "live_dashboard" }],
                            [{ text: "⏹️ Chiudi", callback_data: "dismiss" }]
                        ]
                    }
                }).catch(() => {});
                break;

            case 'get_position':
                bot.editMessageText(renderPositionText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: { inline_keyboard: [[{ text: "← Indietro", callback_data: "back_to_params" }]] }
                }).catch(() => {});
                break;

            case 'get_wind':
                bot.editMessageText(renderWindText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: { inline_keyboard: [[{ text: "← Indietro", callback_data: "back_to_params" }]] }
                }).catch(() => {});
                break;

            case 'get_waves':
                bot.editMessageText(renderWavesText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: { inline_keyboard: [[{ text: "← Indietro", callback_data: "back_to_params" }]] }
                }).catch(() => {});
                break;

            case 'get_forecasts':
                bot.editMessageText(renderForecastsText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: { inline_keyboard: [[{ text: "← Indietro", callback_data: "back_to_params" }]] }
                }).catch(() => {});
                break;

            case 'get_batteries':
                bot.editMessageText(renderBatteriesText(), {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: { inline_keyboard: [[{ text: "← Indietro", callback_data: "back_to_params" }]] }
                }).catch(() => {});
                break;

            case 'back_to_params':
                bot.editMessageText("*Parametri di Bordo*\nQui potrai visualizzare i parametri attuali del computer di bordo. Scegli il parametro che vuoi visualizzare dal menu qui sotto.", {
                    chat_id: chatId,
                    message_id: messageId,
                    parse_mode: 'Markdown',
                    reply_markup: {
                        inline_keyboard: [
                            [{ text: "📊 Dashboard Completa", callback_data: "get_dashboard" }],
                            [{ text: "⛅️ Meteo", callback_data: "get_forecasts" }],
                            [{ text: "📍 Posizione", callback_data: "get_position" }],
                            [{ text: "🌬️ Vento", callback_data: "get_wind" }],
                            [{ text: "🌊 Onde", callback_data: "get_waves" }],
                            [{ text: "🔋 Batterie", callback_data: "get_batteries" }],
                            [{ text: "Annulla", callback_data: "dismiss" }]
                        ]
                    }
                }).catch(() => {});
                break;

            default:
                // Gestione paginazione file
                if (data.startsWith('page_')) {
                    const page = parseInt(data.replace('page_', ''), 10);
                    if (!isNaN(page)) {
                        bot.deleteMessage(chatId, messageId).catch(() => {});
                        fetchFiles(chatId, page);
                    }
                }
                // Gestione richiesta file
                else if (data.startsWith('request_file_')) {
                    const fileName = data.replace('request_file_', '');
                    const filePath = path.join(__dirname, "..", "datasetModels/saved_datas", fileName);
                    
                    if (fs.existsSync(filePath)) {
                        const logsData = loadLogsReferences();
                        const fileRef = (logsData.references || []).find(r => r.name === fileName);
                        const key = fileRef?.key || "Chiave non trovata";
                        
                        try {
                            const fileMsg = await bot.sendDocument(chatId, filePath, {
                                caption: `🔑 Chiave: \`${key}\`\n⚠️ Questo messaggio verrà eliminato tra 10 secondi.`,
                                parse_mode: 'Markdown'
                            });
                            
                            // Elimina dopo 10 secondi
                            setTimeout(() => {
                                bot.deleteMessage(chatId, fileMsg.message_id).catch(() => {});
                            }, CONFIG.fileExpirationTime * 1000);
                            
                        } catch (error) {
                            bot.sendMessage(chatId, `❌ Errore invio file: ${error.message}`);
                        }
                    } else {
                        bot.sendMessage(chatId, "❌ File non trovato.");
                    }
                    
                    bot.deleteMessage(chatId, messageId).catch(() => {});
                }
                break;
        }
    });

} // Fine registerHandlers

module.exports = {
    linkBot,
    send,
    loadUsers,
    saveUsers,
    getUserByChatID,
    isAuthenticated,
    isAdmin
};