"""
A simple GUI to draw 3 rectangles and display statistics on each.
Author: Curt Clifton, David Mutchler, and TODO: 1. YOUR-NAME-HERE.
"""

from zellegraphics import * #@UnusedWildImport

# Nearly constants
window_title = "Eat three rectangles a day!"
window_width = 800
window_height = 400
rectangle_count = 3
initial_prompt = "Click once to set the first corner " + \
                 "and again to set the opposite corner"
final_prompt = "Click one more time to exit"
initial_prompt_color = 'blue'
final_prompt_color = 'red'

def main():
    # window on which we will draw things
    window = GraphWin(window_title, window_width, window_height)

    # draw a prompt message at bottom of window, centered
    prompt = Text(Point(window_width / 2, window_height - 5), initial_prompt)
    prompt.setTextColor(initial_prompt_color)
    prompt.draw(window)
    
    # get rectangles from the user, displaying their properties
    for k in range(rectangle_count): #@UnusedVariable
        rectangle = get_rectangle_from_user(window)
        display_rectangle_statistics(rectangle, window)
    
    # change the prompt message at bottom of window and exit on click
    prompt.setText(final_prompt)
    prompt.setTextColor(final_prompt_color)
    window.getMouse()   # Wait for click, then exit
    window.close()
    
def get_rectangle_from_user(window):
    """
    Get and return a rectangle from the user.  The user should click twice
    on the given window to establish the corners of the rectangle.
    """
    p1 = window.getMouse()  # get first corner from user, then draw it
    p1.draw(window)
        
    p2 = window.getMouse()  # get second corner from user, then draw rectangle
    p1.undraw()
    rectangle = Rectangle(p1, p2)
    rectangle.draw(window)
    
    return rectangle

def display_rectangle_statistics(rectangle, window):
    """
    On the given window, display statistics for the given rectangle, as follows.
    At two opposite corners of the rectangle, display the coordinates of the corners;
    and in the center of the rectangle, display the rectangle's area and perimeter.
    """
    
    # TODO: 2. Make the location of the constructed message be the rectangle's center.
    location = Point(200, 200)
    text = statistics(rectangle)
    message = Text(location, str(text))
    message.draw(window)
    
    # TODO: 3. At each of the corners used to construct the rectangle,
    # display the corner's X and Y coordinates
   
def statistics(rectangle):
    """ Return (as a 2-tuple) the area and perimeter of the given rectangle """
    # TODO: 4. Implement this function.

main()