dual PIR sensor logger, with email alert on Beaglebone black / BoneScript

gistfile1.js

// Read PIR, Write csv, Push to ShowSensor
//
//  2015-02-11 : add function : send email when out door sensor detect a visitor
//
var b    = require('bonescript');
var fs   = require('fs');
var http = require('http');

var exec = require('child_process').exec, child;    // for mail
var mailfile = '/root/sendmail.msg';                // for mail

var useLED = true;
var LED    = 'USR3';

var pirInRoom = 'P8_19';
var pirOutDoor = 'P8_18';

b.pinMode(pirInRoom,  b.INPUT);
b.pinMode(pirOutDoor, b.INPUT);
setInterval(readStatus, 100); // Checks the Sensor Every 0.1 Seconds

var limitCurrentHour = 12;
var limitPrevHour    = limitCurrentHour -1;

var filename = null;
var isStart  = false;

var countInRoom   = 0;
var countOutDoow  = 0;
var prevMinute    = 99;
var prevHour      = 99;


function readStatus() {
    var outDoor = b.digitalRead(pirOutDoor);
    var inRoom  = b.digitalRead(pirInRoom);
    var tokei = new Date();

    var sec  = tokei.getSeconds();
    var min  = tokei.getMinutes();
    var hour = tokei.getHours();
    var day  = tokei.getHours();
    
    if (min != prevMinute) {
        if (prevHour == 99) prevHour = hour;
        
        if (prevMinute == 99) {
            if (sec == 0) {
                prevMinute = min;
            }
        } else {
            if (filename == null) {
                var tempTokei = tokei;
                if (hour <= limitPrevHour) {
                    tempTokei.setTime(tokei.getTime() - 24*3600*1000);
                }
                filename = getStrFilename(tempTokei);
                // filename = '/root/' + formatDate(tempTokei, "YYYY-MM-DD") + '.txt';
                // console.log("filename=" + filename);
            }
            
            if (prevHour == limitCurrentHour-1 && hour == limitCurrentHour) {
                filename = getStrFilename(tokei);
                // filename = '/root/' + formatDate(tokei, "YYYY-MM-DD") + '.txt';
                // console.log("filename=" + filename);
            }
            
            var sDate  = formatDate(tokei, "YYYY-MM-DD hh:mm");
            var sInRoom  = Math.round(countInRoom /10);
            var sOutDoor = Math.round(countOutDoor/10);
            var s = sDate + "," + sInRoom + "," + sOutDoor;
            fs.appendFile(filename, s + "\n", function(err) {
                if (err) console.log(err);
            });
            
            // http://stackoverflow.com/questions/4505809/how-to-post-to-a-request-using-node-js
            var body = JSON.stringify({
                date:  sDate,
                count: sInRoom,
                outdoor: sOutDoor,
                email: "mail@example.com"
            });
            
            console.log(body);

            try {
                pushData(body);
                if (sOutDoor > 10) {
                    sendMessage('mail@example.com', '来客?', 'カウント=' + sOutDoor);
                }

            } catch(e) {
                console.log(body);    
            }
            
            prevMinute = min;
        }
        
        prevHour = hour;
        countInRoom = countOutDoor = 0;
    }
    
    if (inRoom == 0) { // detected
        countInRoom ++;
    }
    if (outDoor == 1) {
        countOutDoor ++;
    }
    
    if (useLED) b.digitalWrite(LED, outDoor);
}


function pushData(inBody) {
    var request = new http.ClientRequest({
        // hostname: "192.168.0.70",
        hostname: "infinite-reaches-8771.herokuapp.com",
        port: 80,
        path: "/receive",
        method: "POST",
        headers: {
            "Content-Type": "application/json",
            "Content-Length": Buffer.byteLength(inBody)
        }
    });
    
    request.on('response', function (response) {
        response.on('data', function (chunk) {
        });
        response.on('error', function (chunk) {
            console.log('BODY: ' + chunk);
        });
    });
    
    request.write(inBody);
    request.end();
    
}


function getStrFilename(x) {
    var str = '/root/' + formatDate(x, "YYYY-MM-DD") + '.txt';
    console.log("filename=" + str);
    return str;
}


function sendMessage(to, subject, message) {
    
    // create message file
    var msg = 'To: ' + to + '\n' + 'Subject: ' + subject + '\n' + message + '\n';
    fs.writeFileSync(mailfile, msg);
    
    // send it
    child = exec('msmtp -t < ' + mailfile, function(error, stdout, stderr) {
        if (stdout != null) console.log('stdout:' + stdout);
        if (error != null) {
            if (stderr != null) console.log('stderr:' + stderr);
            console.log(error);
        }
    });
}

//  http://qiita.com/osakanafish/items/c64fe8a34e7221e811d0
/**
 * 日付をフォーマットする
 * @param  {Date}   date     日付
 * @param  {String} [format] フォーマット
 * @return {String}          フォーマット済み日付
 */
var formatDate = function (date, format) {
  if (!format) format = 'YYYY-MM-DD hh:mm:ss.SSS';
  format = format.replace(/YYYY/g, date.getFullYear());
  format = format.replace(/MM/g, ('0' + (date.getMonth() + 1)).slice(-2));
  format = format.replace(/DD/g, ('0' + date.getDate()).slice(-2));
  format = format.replace(/hh/g, ('0' + date.getHours()).slice(-2));
  format = format.replace(/mm/g, ('0' + date.getMinutes()).slice(-2));
  format = format.replace(/ss/g, ('0' + date.getSeconds()).slice(-2));
  if (format.match(/S/g)) {
    var milliSeconds = ('00' + date.getMilliseconds()).slice(-3);
    var length = format.match(/S/g).length;
    for (var i = 0; i < length; i++) format = format.replace(/S/, milliSeconds.substring(i, i + 1));
  }
  return format;
};