''' Purpose: provide overlay of pillow support
'''

from PIL import Image

def get_selfie( person ) :
    ''' Returns a new copy of the cs 1112 of selfied uploaded by person 
    '''
    PEOPLE_FOLDER = "http://www.cs.virginia.edu/~cs1112/people/"

    link = PEOPLE_FOLDER + person + "/selfie.jpg"

    img = get_image( link  )

    return img

def get_image( link ) :
    ''' Returns a new copy of the image at link
    '''

    import urllib.request, io
    from PIL import Image
    
    stream = urllib.request.urlopen( link )
    data = stream.read()
    pixels = io.BytesIO( data )
    img    = Image.open( pixels )
    img    = img.convert('RGB')

    #load_canvas( img )

    return img

def resize( img, max_w, max_h ) :
    ''' Scales img to ensure that it fits within a max_w x max_h box
    '''

    w, h = img.size

    scale_w = w / max_w
    scale_h = h / max_h

    scale = max( scale_w, scale_h )

    if ( scale > 1 ) :
        w = int( w / scale )
        h = int( h / scale )
        img = img.resize( ( w, h ) ).convert( 'RGB' )
        
    return img