import cv2
import base64

global gamelist
gamelist = []


# Set the gamelist
def set_gamelist(gamelist_dict):
    global gamelist
    gamelist = gamelist_dict
    return True


# Get the gamelist
def get_gamelist():
    global gamelist
    return gamelist


# Reducing the size of an artwork/image (PNG to JPEG)  and base64-encode it.
# imagepath     = full file image path
# expectedsize  = medium or thumbnail
def reduceartcv2(imagepath, expectedsize):
    if expectedsize == 'thumbnail':
        image = cv2.imread(imagepath)
        thumb_s = image_resize(image, width=90)
        retval, thumb = cv2.imencode('.jpg', thumb_s)
        return base64.b64encode(thumb).decode()


# Stolen from stackoverflow
# Resize image and keep aspect ratio
def image_resize(image, width=None, height=None, inter=cv2.INTER_AREA):
    # initialize the dimensions of the image to be resized and
    # grab the image size
    dim = None
    (h, w) = image.shape[:2]

    # if both the width and height are None, then return the
    # original image
    if width is None and height is None:
        return image

    # check to see if the width is None
    if width is None:
        # calculate the ratio of the height and construct the
        # dimensions
        r = height / float(h)
        dim = (int(w * r), height)

    # otherwise, the height is None
    else:
        # calculate the ratio of the width and construct the
        # dimensions
        r = width / float(w)
        dim = (width, int(h * r))

    # resize the image
    resized = cv2.resize(image, dim, interpolation=inter)

    # return the resized image
    return resized