URADI VECERAS

1. Dodaj Helper metodu da resize-a sliku na

(http://stackoverflow.com/questions/1922040/resize-an-image-c-sharp)
    public Image resizeImage(int newWidth, int newHeight, string stPhotoPath)
    {
        Image imgPhoto = Image.FromFile(stPhotoPath);

        int sourceWidth = imgPhoto.Width;
        int sourceHeight = imgPhoto.Height;

        //Consider vertical pics
        if (sourceWidth < sourceHeight)
        {
            int buff = newWidth;

            newWidth = newHeight;
            newHeight = buff;
        }

        int sourceX = 0, sourceY = 0, destX = 0, destY = 0;
        float nPercent = 0, nPercentW = 0, nPercentH = 0;

        nPercentW = ((float)newWidth / (float)sourceWidth);
        nPercentH = ((float)newHeight / (float)sourceHeight);
        if (nPercentH < nPercentW)
        {
            nPercent = nPercentH;
            destX = System.Convert.ToInt16((newWidth -
                      (sourceWidth * nPercent)) / 2);
        }
        else
        {
            nPercent = nPercentW;
            destY = System.Convert.ToInt16((newHeight -
                      (sourceHeight * nPercent)) / 2);
        }

        int destWidth = (int)(sourceWidth * nPercent);
        int destHeight = (int)(sourceHeight * nPercent);


        Bitmap bmPhoto = new Bitmap(newWidth, newHeight,
                      PixelFormat.Format24bppRgb);

        bmPhoto.SetResolution(imgPhoto.HorizontalResolution,
                     imgPhoto.VerticalResolution);

        Graphics grPhoto = Graphics.FromImage(bmPhoto);
        grPhoto.Clear(Color.White);
        grPhoto.InterpolationMode =
            System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

        grPhoto.DrawImage(imgPhoto,
            new Rectangle(destX, destY, destWidth, destHeight),
            new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
            GraphicsUnit.Pixel);

        grPhoto.Dispose();
        imgPhoto.Dispose();

        return bmPhoto;
    }






2. Vrati Base64 String sliku:
string base64String = Convert.ToBase64String(imageBytes);
(http://stackoverflow.com/questions/10889764/how-to-convert-bitmap-to-a-base64-string)




3. Napravi helper klasu koja ce kreirati tokene, i dekodirati ih:
(http://stackoverflow.com/questions/14643735/how-to-generate-a-unique-token-which-expires-after-24-hours)

- To create a unique token:
string token = Convert.ToBase64String(Guid.NewGuid().ToByteArray());

- Basic example of creating a unique token containing a time stamp:
byte[] time = BitConverter.GetBytes(DateTime.UtcNow.ToBinary());
byte[] key = Guid.NewGuid().ToByteArray();
string token = Convert.ToBase64String(time.Concat(key).ToArray());

- To decode the token to get the creation time:
byte[] data = Convert.FromBase64String(token);
DateTime when = DateTime.FromBinary(BitConverter.ToInt64(data, 0));
if (when < DateTime.UtcNow.AddHours(-24)) {
  // too old
}

Note: If you need the token with the time stamp to be secure, you need to encrypt it. Otherwise a user could figure out what it contains and create a false token.

*********NAPOMENA*******************
KAO STO JE OVAJ FRAJER REKAO - ISKORISTI CRYPTOHELPERS KLASU DA JOS JEDNOM ENKRIPTUJES OVAJ TOKEN (nadji salt ili korisnikov mail (da bi bilo jos unique) ili vrijednost iz web.config).







4. Napravi token tabelu "UserToken" u bazi sa slijedecim parametrima:
UserTokenId  LONG				identity ON   not nullable PK
UserId		 LONG   			not nullable 			   FK
TokenValue	 NVARCHAR(255) 		not nullable
Created 	DATETIME			not nullable



5. android studio listview with images
http://www.androidinterview.com/android-custom-listview-with-image-and-text-using-arrayadapter/
https://www.youtube.com/watch?v=HRPpQw0dzko