# -*- coding: utf-8 -*-
import cv2
import sys


def resize(src, w_ratio, h_ratio):
    """Resize image

    Args:
        src (numpy.ndarray): Image
        w_ratio (int): Width ratio
        h_ratio (int): Height ratio

    Returns:
        numpy.ndarray: Image
    """

    height = src.shape[0]
    width = src.shape[1]
    dst = cv2.resize(src, ((int)(width/100*w_ratio), (int)(height/100*h_ratio)))
    return dst


if __name__ == '__main__':
    param = sys.argv
    if(len(param) != 4):
        print("Usage: $ python " + param[0] + " sample.jpg wide_ratio height_ratio")
        quit()

    # open image file
    try:
        input_img = cv2.imread(param[1])
    except Exception as e:
        print(e)
        quit()

    if input_img is None:
        print('faild to load %s' % param[1])
        quit()

    w_ratio = int(param[2])
    h_ratio = int(param[3])

    output_img = resize(input_img, w_ratio, h_ratio)
    cv2.imwrite(param[1], output_img)