const express = require('express');
const Thermal = require('./modules/Thermal.js');

const app = express();
const port = 80;

// Middleware to serve static files (HTML)
app.use(express.static('public'));

// Middleware to parse JSON request bodies
app.use(express.json());

// Print credentials
app.post('/print-credentials', async (req, res) => {
	try {
		const { username, studentId } = req.body;
		if (!username || !studentId) {
			return res.status(400).json({ message: 'Username and Student ID are required.' });
		}
		// Generate the information string
		const infoString = Thermal.generateInfo.credentials(username, studentId);

		// Generate the PDF, saved to disk
		Thermal.generatePdf(infoString).then(resolve => {
			// Print the document
			Thermal.print().then(resolve => {
				res.send('PDF sent to printer successfully.');
			}).catch(e => {
				console.error('Failed to start printing process:', e);
				res.status(500).json({ message: 'Failed to start printing process', error: e.message });
			});
		}).catch(e => {
			console.error(e);
			res.status(500).json({ message: 'Error writing PDF file', error: e.message });
		});
	} catch (e) {
		console.error('Print Error:', e);
		res.status(500).json({ message: 'Print Error', error: e.message });
	}
});

// Print temp password
app.post('/print-temp-pw', async (req, res) => {
	try {
		// Grab the password from the request body
		const { password } = req.body;

		// Check that the password is actually there
		if (!password) {
			return res.status(400).json({ message: 'Password is required.' });
		}

		// Generate the information string
		const infoString = Thermal.generateInfo.tempPassword(password);

		// Generate the PDF, saved to disk
		Thermal.generatePdf(infoString).then(res => {
			// Print the document
			Thermal.print().then(res => {
				res.send('PDF sent to printer successfully.');
			}).catch(e => {
				console.error('Failed to start printing process:', err);
				res.status(500).json({ message: 'Failed to start printing process', error: err.message });
			});
		}).catch(e => {
			console.error(e);
			res.status(500).json({ message: 'Error writing PDF file', error: err.message });
		});
	} catch (error) {
		console.error('Print Error:', error);
		res.status(500).json({ message: 'Print Error', error: error.message });
	}
});

// Print Student MaineCC Info
app.post('/print-mcc', async (req, res) => {
	try {
		// Generate the information string
		const infoString = Thermal.generateInfo.maineCC();

		// Generate the PDF, saved to disk
		Thermal.generatePdf(infoString).then(res => {
			// Print the document
			Thermal.print().then(res => {
				res.send('PDF sent to printer successfully.');
			}).catch(e => {
				console.error('Failed to start printing process:', err);
				res.status(500).json({ message: 'Failed to start printing process', error: err.message });
			});
		}).catch(e => {
			console.error(e);
			res.status(500).json({ message: 'Error writing PDF file', error: err.message });
		});
	} catch (error) {
		console.error('Print Error:', error);
		res.status(500).json({ message: 'Print Error', error: error.message });
	}
});

// Start the server
app.listen(port, () => {
	console.log(`Server running at http://localhost:${port}`);
});