#include "windows.h"
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <string.h>
#include <conio.h>
using namespace std;

int adcToInt(char, char, char);
int cursorPos;

int main()
{
    ofstream myfile;
    myfile.open("UniSenData.lgdat");
    myfile << "##;##\n";
    myfile << "Sensor1;Sensor2;Sensor3;Sensor4;Sensor5\n";

    //COM Port Communication Protocol
    HANDLE hSerial;
    //LPCWSTR testing = L"\\\\.\\COM11";
    hSerial = CreateFile(TEXT("COM1"), GENERIC_READ, 0, NULL, OPEN_EXISTING,
        0, NULL);

    if (hSerial == INVALID_HANDLE_VALUE)
        return 0;

   // error opening port; abort

    //Init
    DCB dcbSerialParams = {0};
    dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
    dcbSerialParams.BaudRate=CBR_9600;
    dcbSerialParams.ByteSize=8;
    dcbSerialParams.StopBits=ONESTOPBIT;
    dcbSerialParams.Parity=NOPARITY;
    SetCommState(hSerial, &dcbSerialParams);

    //Timeouts
    COMMTIMEOUTS timeouts = {0};
    timeouts.ReadIntervalTimeout=100;
    timeouts.ReadTotalTimeoutConstant=100;
    timeouts.ReadTotalTimeoutMultiplier=20;
    SetCommTimeouts(hSerial, &timeouts);
    //Create COM Port Buffer
    int j = 20;
    char szBuff[20] = {0};
    DWORD myBytesRead = 0;
    ReadFile(hSerial, szBuff, j+1, &myBytesRead, NULL);

    //Declaration of a random string here causes clear buffer output by printf for some reason
    string randomString, randomString2, randomString3, randomString4;
    //Port values will store integer valuesof adc values read from  buffer
    int portOneVal, portTwoVal, portThreeVal, portFourVal, portFiveVal;
    string charToString;
        while(1){

            if (szBuff[0] == 'A')
            {
                //Grab and output raw buffer data
                cout << "Bytes Read: " << myBytesRead << endl;
                szBuff[20] = '\0';
                printf("%s\n",szBuff);
                //Output data to confirm integer values
                portOneVal = adcToInt(szBuff[1], szBuff[2], szBuff[3]);
                cout << "Sensor 1: " << portOneVal << endl;
                portTwoVal = adcToInt(szBuff[5], szBuff[6], szBuff[7]);
                cout << "Sensor 2: " << portTwoVal << endl;
                portThreeVal = adcToInt(szBuff[9], szBuff[10], szBuff[11]);
                cout << "Sensor 3: " << portThreeVal << endl;
                portFourVal = adcToInt(szBuff[13], szBuff[14], szBuff[15]);
                cout << "Sensor 4: " << portFourVal << endl;
                portFiveVal = adcToInt(szBuff[17], szBuff[18], szBuff[19]);
                cout << "Sensor 5: " << portFiveVal << endl;
                //Begin Writing Sensory Values to data file
                myfile.seekp(0, ios::end);
                myfile << portOneVal << endl;
                if (portOneVal == 0)
                {
                    myfile.close();
                    break;
                }
                myfile.close();
                ReadFile(hSerial, szBuff, j+1, &myBytesRead, NULL);
            }
            else
            {
                ReadFile(hSerial, szBuff, j+1, &myBytesRead, NULL);
            }
        }
    CloseHandle(hSerial);
    return 0;
}

int adcToInt(char hundreds, char tens, char ones)
{
    //Initilize temporary variables
    char parsedVal[3];
    string stringVal;
    int intVal;
    //Eliminate any leading zeros in ADC values
    if ((hundreds == 0) && (tens == 0) && (ones == 0))
    {
        parsedVal[0] = '0';
        parsedVal[1] = '0';
        parsedVal[2] = '0';
    }
    else if ((hundreds == 0) && (tens == 0) && (ones =! 0))
    {
        parsedVal[0] = ones;
        parsedVal[1] = '\0';
    }
    else if ((hundreds == 0) && (tens =! 0) && (ones =! 0))
    {
        parsedVal[1] = tens;
        parsedVal[0] = ones;
        parsedVal[2] = '\0';
    }
    else
    {
        parsedVal[2] = ones;
        parsedVal[1] = tens;
        parsedVal[0] = hundreds;
    }

    //Convert char array to string
    stringVal = parsedVal;
    //Convert string to integer value
    intVal = atoi (parsedVal);
    //Return intVal
    return intVal;
}