"use strict";

const pcsclite = require('../lib/pcsclite');


const pcsc = pcsclite();

pcsc.on('reader', function (reader) {

	console.log('New reader detected', reader.name);

	reader.on('error', function (err) {
		console.log('Error(', this.name, '):', err.message);
	});

	reader.on('status', function (status) {
		console.log('Status(', this.name, '):', status);
		/* check what has changed */
		const changes = this.state ^ status.state;
		if (changes) {
			if ((changes & this.SCARD_STATE_EMPTY) && (status.state & this.SCARD_STATE_EMPTY)) {
				console.log("card removed");
				/* card removed */
				reader.disconnect(reader.SCARD_LEAVE_CARD, function (err) {
					if (err) {
						console.log(err);
					} else {
						console.log('Disconnected');
					}
				});
			} else if ((changes & this.SCARD_STATE_PRESENT) && (status.state & this.SCARD_STATE_PRESENT)) {
				console.log("card inserted");
				/* card inserted */
				reader.connect({ share_mode: this.SCARD_SHARE_SHARED }, function (err, protocol) {
					if (err) {
						console.log(err);
					} else {
						console.log('Protocol(', reader.name, '):', protocol);
						reader.transmit(new Buffer([0x00, 0xB0, 0x00, 0x00, 0x20]), 40, protocol, function (err, data) {
							if (err) {
								console.log(err);
							} else {
								console.log('Data received', data);
								reader.close();
								pcsc.close();
							}
						});
					}
				});
			}
		}
	});

	reader.on('end', function () {
		console.log('Reader', this.name, 'removed');
	});
});

pcsc.on('error', function (err) {
	console.log('PCSC error', err.message);
});