"""
Prints the Fall semester UIC dates of instruction from a JSON file containing information about UIC's 
academic calendar to the console
"""

import json

with open("uic_caldata_2020.json", "r", encoding="UTF-8") as file:
    cal_data = json.load(file)
    for year in cal_data:  # The keys are the years
        if "fall" in cal_data[year]: # Checks if a year has a fall semester
            print("Fall {}: {} to {}".format(year, cal_data[year]["fall"]["start"], cal_data[year]["fall"]["end"]))

def stripe_maker(
    fn,
    size=(300, 200),
    orientation="diagonal",
    colors=[(255,255,255),(0,0,0)],
    stripe_thickness=10,
):
    """
    Create an image whose dimensions are given by tuple `size`, filled with stripes.
    The stripes cycle between the colors in the list `colors`, in order, repeating
    until the image is filled.  The orientation of the stripes is controller by
    argument `orientation`, which can have values:
    * "horizontal" - The stripes are horizontal, with height `stripe_thickness` pixels
    * "vertical" - The stripes are vertical, with width `stripe_thickness` pixels
    * "diagonal" - The stripes are diagonal, going from lower left to upper right at an
       angle of 45 degrees.  The width and height of any stripe (which are equal due to
       the 45 degree angle) is `stripe_thickness` pixels.

    The resulting image is then saved to a bitmap image file whose name is given by
    argument `fn`.
    """

stripe_maker(
    fn="sample1.png",
    size=(100,100),
    orientation="horizontal",
    colors=[(255,255,128),(128,128,255)]
)
# Now let's see what was created
img = Image.open("sample1.png")
img

# Note that more than two colors are supported!
stripe_maker(
    fn="sample2.png",
    size=(500,150),
    orientation="diagonal",
    colors=[(168, 230, 207),
            (220, 237, 193),
            (255, 211, 182),
            (255, 170, 165),
            (255, 139, 148)],
    stripe_thickness=30
)
# Now let's see what was created
img = Image.open("sample2.png")
img

stripe_maker(
    fn="sample3.png",
    size=(93,131),
    orientation="vertical",
    colors=[(64,64,64),(96,96,96),(128,128,128)],
    stripe_thickness=5
)
# Now let's see what was created
img = Image.open("sample3.png")
img

stripe_maker(fn="sample4.png",stripe_thickness=80) # use mostly default arguments
# Now let's see what was created
img = Image.open("sample4.png")
img

from PIL import Image
def stripe_maker(
    fn,
    size=(300, 200),
    orientation="diagonal",
    colors=[(255,255,255),(0,0,0)],
    stripe_thickness=10,
):
    """
    Creates an image whose dimensions are given by tuple `size`, filled with stripes.
    The stripes cycle between the colors in the list `colors`, in order, repeating
    until the image is filled.  The orientation of the stripes is controller by
    argument `orientation`, which can have values:
    * "horizontal" - The stripes are horizontal, with height `stripe_thickness` pixels
    * "vertical" - The stripes are vertical, with width `stripe_thickness` pixels
    * "diagonal" - The stripes are diagonal, going from lower left to upper right at an
       angle of 45 degrees.  The width and height of any stripe (which are equal due to
       the 45 degree angle) is `stripe_thickness` pixels.

    The resulting image is then saved to a bitmap image file whose name is given by
    argument `fn`.
    """
    stripes = Image.new("RGB",size)
    # Initializes an "RBG" image.

    n_colors = len(colors) # number of colors to cycle thru.
    

    for x in range(size[0]):
        #inserts the appropriate pixel content based on the desired orientation
        for y in range(size[1]):

            if orientation == "vertical":
                index = (x // stripe_thickness) % n_colors
            elif orientation == "horizontal":
                index = (y // stripe_thickness) % n_colors
            elif orientation == "diagonal":
                index = ((x+y) // stripe_thickness) % n_colors
            else:
                raise ValueError("Unknown orientation '{}'".format(orientation))
                
            stripes.putpixel((x,y), colors[index])
            
        stripes.save(fn)