import express from 'express';
import fetch from 'node-fetch';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import dotenv from 'dotenv';

// Загружаем переменные окружения
dotenv.config();

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

const app = express();
const PORT = process.env.PORT || 3000;

// Serve static files from public directory
app.use(express.static('public'));

// API endpoint to get phone book data
async function getPhoneBookData() {
    try {
        const response = await fetch(process.env.API_URL, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${process.env.API_TOKEN}`
            },
            body: JSON.stringify({
                "active": true,
                "fields": {
                    "fullname": true,
                    "mobile_number": true,
                    "fixed_number": true,
                    "title": true,
                    "department": true,
                    "email_string": true
                },
                "from": 0,
                "size": parseInt(process.env.API_PAGE_SIZE) || 1000
            })
        });

        const data = await response.json();
        
        if (!data.success || !data.result?.result) {
            throw new Error('Неверный формат данных от API');
        }

        return data.result.result.map(employee => ({
            name: formatFullName(employee.fullname),
            phone: employee.mobile_number || employee.fixed_number || '-',
            title: employee.title || '-',
            department: employee.department || '-',
            email: employee.email_string || '-'
        }));
    } catch (error) {
        console.error('Ошибка при запросе к API:', error.message);
        return [];
    }
}

function formatFullName(fullname) {
    if (!fullname) return '-';
    
    const { lastname = '', firstname = '', middlename = '' } = fullname;
    return [lastname, firstname, middlename].filter(Boolean).join(' ') || '-';
}

// API endpoint for contacts
app.get('/api/contacts', async (req, res) => {
    const contacts = await getPhoneBookData();
    res.json(contacts);
});

// Serve index.html for all other routes
app.get('*', (req, res) => {
    res.sendFile(join(__dirname, 'public', 'index.html'));
});

app.listen(PORT, () => {
    console.log(`Сервер запущен на порту ${PORT}`);
});