private Message(string data, Encoding encoding)
{
Data16Bits[] dataInInData16Bits = convertStringToData16Bits(data, encoding);
Data16Bits checksumData = checksum(dataInInData16Bits);
Data16Bits[] datawithChecksum = dataInInData16Bits.Join(new[] { checksumData });
this.data = datawithChecksum;
}
private Data16Bits sumOfAll(Data16Bits[] data)
{
var sumOfAllBitArrays = new Data16Bits();
for (int i = 0; i < data.Length; i++)
{
sumOfAllBitArrays = sumOfAllBitArrays + data[i];
}
return(sumOfAllBitArrays);
}
public void Validate()
{
var checksumExpectedResult = new Data16Bits(true);
var checksumResult = sumOfAll(data);
if (!checksumResult.Equals(checksumExpectedResult))
{
throw new Exception("Invalid message, checksum does not match");
}
}
private Data16Bits[] convertStringToData16Bits(string data, Encoding encoding)
{
byte[] bytesOfData = encoding.GetBytes(data);
var lenghtOfBitArray = bytesOfData.Length / 2;
var addBitArray = bytesOfData.Length % 2 != 0 ? 1 : 0;
var bitArrayOfData = new Data16Bits[lenghtOfBitArray + addBitArray];
for (int i = 0; i < bitArrayOfData.Length - 1; i++)
{
bitArrayOfData[i] = new Data16Bits(bytesOfData[i * 2], bytesOfData[(i * 2) + 1]);
}
if (addBitArray == 0)
{
bitArrayOfData[bitArrayOfData.Length - 1] = new Data16Bits(bytesOfData[(bitArrayOfData.Length - 1) * 2], bytesOfData[((bitArrayOfData.Length - 1) * 2) + 1]);
}
else
{
bitArrayOfData[bitArrayOfData.Length - 1] = new Data16Bits(bytesOfData[(bitArrayOfData.Length - 1) * 2], new byte());
}
return(bitArrayOfData);
}
