import operator
import logging
import random

# Logging to console
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO) # Set loglevel to INFO or higher to prevent console spam.


"""
Helper functions
"""
# Return some hex colour
"""
Waiting for Stanford to fix a bug in the environment
CIP bug: https://codeinplace.stanford.edu/cip6/report?post=ac7c4ffd-1f90-475a-b4ee-2e5b73c5348f

from matplotlib import colors
import decimal

def get_random_colour():
    return decimal.Decimal(random.randrange(0,10)/10), decimal.Decimal(random.randrange(0,10)/10), decimal.Decimal(random.randrange(0,10)/10)

colour = colors.rgb2hex((get_random_colour()))
background = colors.rgb2hex((get_random_colour()))
"""
def generate_random_colour():
    rgb_values = [random.randrange(256), random.randrange(256), random.randrange(256)]
    hex_colours = [hex(value)[2:] for value in rgb_values]  # Strip the '0x' prefix
    for i in range(len(hex_colours)):
        if len(str(hex_colours[i])) == 1:
            hex_colours[i] = f"0{hex_colours[i]}"
    return '#' + ''.join(hex_colours)

"""
Karel functions
"""
# Erase a passed Karel from the canvas
def erase_karel(karel):
    canvas = karel[1][0]

    for shape in karel[0].values():
        canvas.delete(shape)
    logger.debug(f"Erased karel: {karel}")

# Move a passed Karel on the canvas
"""
Waiting for Stanford to fix a bug in the environment
CIP bug: https://codeinplace.stanford.edu/cip6/report?post=7043ece9-7653-4e39-8a63-5f4544b1d74b

def move_karel(canvas, karel, x, y):
    for shape in karel[0].values():
        canvas.move(shape, x, y)
    logger.debug(f"Moved: {karel} by {x} horizontally, {y} vertically")
"""
def move_karel(karel, x:int=0, y:int=0):
    # Update coordinates in list
    karel[1][1] += x
    karel[1][2] += y

    erase_karel(karel)
    new_karel = draw_karel(karel[1][0], karel[1][1], karel[1][2], karel[1][3], karel[1][4], karel[1][5], karel[1][6], karel[1][7])

    logger.debug(f"Moved: {karel} by {x} horizontally, {y} vertically, to {new_karel}")
    return new_karel

# Change the orientation of a passed Karel
def rotate_karel(karel, direction):
    # Relative turn
    if direction == "right" or direction == "left":
        # East
        if karel[1][4] == "east":
            if direction == "right":
                karel[1][4] = "south"
                print(1)
            if direction == "left":
                karel[1][4] = "north"
        elif karel[1][4] == "east-flipped":
            if direction == "right":
                karel[1][4] = "south-flipped"
            if direction == "left":
                karel[1][4] = "north-flipped"

        # North
        elif karel[1][4] == "north":
            if direction == "right":
                karel[1][4] = "east"
            if direction == "left":
                karel[1][4] = "west"
        elif karel[1][4] == "north-flipped":
            if direction == "right":
                karel[1][4] = "east-flipped"
            if direction == "left":
                karel[1][4] = "west-flipped"

        # West
        elif karel[1][4] == "west":
            if direction == "right":
                karel[1][4] = "north"
            if direction == "left":
                karel[1][4] = "soutch"
        elif karel[1][4] == "west-flipped":
            if direction == "right":
                karel[1][4] = "north-flipped"
            if direction == "left":
                karel[1][4] = "south-flipped"

        # South
        elif karel[1][4] == "south":
            if direction == "right":
                karel[1][4] = "west"
            if direction == "left":
                karel[1][4] = "east"
        elif karel[1][4] == "north-flipped":
            if direction == "right":
                karel[1][4] = "west-flipped"
            if direction == "left":
                karel[1][4] = "east-flipped"
    
    # Absolute rotation
    elif direction == "east" or direction == "east-flipped" or direction == "north" or direction == "north-flipped" or direction == "west" or direction == "west-flipped" or direction == "south" or direction == "south-flipped":
        karel[1][4] = direction
    
    # Syntax error
    else:
        logger.error(f"Invalid rotation direction: {direction}")

    erase_karel(karel)
    new_karel = draw_karel(karel[1][0], karel[1][1], karel[1][2], karel[1][3], karel[1][4], karel[1][5], karel[1][6], karel[1][7])

    logger.debug(f"Rotated Karel: {karel} by {direction} as {karel[1][4]} to {new_karel}")
    return new_karel

# Recolour a passed Karel on the canvas
"""
Waiting for Stanford to fix a bug in the environment
CIP bug: https://codeinplace.stanford.edu/cip6/report?post=c36ed931-3019-4830-8ba6-655c1a513471

def recolour_karel(canvas, karel, colour:str="black", background:str="white"):
    for name, shape in karel[0].items():   # Loop over Karel dict
        if name.endswith("_fill"): # Background shape
            canvas.set_color(shape, background)
            canvas.set_outline_color(shape, background)
        else:   # Foreground shape
            if name.endswith("_line") or name.endswith("_corner") or name == "mouth":
                canvas.set_color(shape, colour)
            elif name == "eye":
                #canvas.set_color(shape, "transparent")
                canvas.set_outline_color(shape, colour)
            else:   # Legs and feet
                canvas.set_color(shape, colour)
                canvas.set_outline_color(shape, colour)
"""
def recolour_karel(karel, colour:str="black", background:str="white"):
    # Random colours
    if colour == "random":
        colour = generate_random_colour()
    if background == "random":
        background = generate_random_colour()

    # Update colours in list
    karel[1][5] = colour
    karel[1][6] = background

    erase_karel(karel)
    new_karel = draw_karel(karel[1][0], karel[1][1], karel[1][2], karel[1][3], karel[1][4], karel[1][5], karel[1][6], karel[1][7])

    logger.debug(f"Re-coloured Karel: {karel} with {colour} and {background} to {new_karel}")
    return new_karel

# Draw a Karel
def draw_karel(
        canvas,
        centre_x:int=25,
        centre_y:int=25,
        size:int=50,
        orientation:str="east",
        colour:str="black",
        background:str="white",
        transparent:bool=False
    ):
    
    # Body constants
    MARGIN = size / 8
    APPENDAGE_MULTIPLIER = MARGIN * 0.6
    
    # Random colours
    if colour == "random":
        colour = generate_random_colour()
    if background == "random":
        background = generate_random_colour()

    ''' Flipper case
    In order to be able to flip Karel, the operands in the forumlas must be able to switch around.
    Orientations are in relation to the centre of Karel.
    '''
    match orientation.lower():     
        case "east" | "south-flipped":
            left_operand = operator.sub     # Left / Top
            top_operand = operator.sub      # Top / Left
            right_operand = operator.add    # Right / Bottom
            bottom_operand = operator.add   # Bottom / Right
        case "east-flipped" | "south":
            left_operand = operator.sub     # Left / Top
            top_operand = operator.add      # Bottom / Right
            right_operand = operator.add    # Right / Bottom
            bottom_operand = operator.sub   # Top / Left
        case "west" | "north-flipped":
            left_operand = operator.add     # Right 
            top_operand = operator.add      # Bottom
            right_operand = operator.sub    # Left
            bottom_operand = operator.sub   # Top
        case "west-flipped" | "north":
            left_operand = operator.add     # Right / Bottom
            top_operand = operator.sub      # Top / Left
            right_operand = operator.sub    # Left / Top
            bottom_operand = operator.add   # Bottom / Right
    
    # Coords case
    if orientation.lower() == "north" or orientation.lower() == "north-flipped" or orientation.lower() == "south" or orientation.lower() == "south-flipped":
        temp_x = centre_x
        centre_x = centre_y
        centre_y = temp_x
        #pass

    # Borders
    left = left_operand(centre_x, size / 2)
    top = top_operand(centre_y, size / 2)
    right = right_operand(centre_x, size / 2)
    bottom = bottom_operand(centre_y, size / 2)
    margin = size / 8
    appendage_multiplier = margin * 0.6

    # Body borders
    body_left = left_operand(centre_x, size / 3)
    body_top = top
    body_right = right_operand(centre_x, size / 3)
    body_bottom = bottom_operand(centre_y, size / 2.6)
    eye_left = right_operand(body_left, margin)
    eye_top = bottom_operand(body_top, margin)
    eye_right = left_operand(body_right, margin)
    eye_bottom = top_operand(body_bottom, margin * 2)

    # Body coordinates
    top_left_corner = body_left, body_top
    left_diagonal_top = body_left, top_operand(body_bottom, margin)
    left_diagonal_bottom = eye_left, body_bottom
    right_diagonal_top = eye_right, body_top
    right_diagonal_bottom = body_right, bottom_operand(body_top, margin)
    bottom_right_corner = body_right, body_bottom
    mouth_left_corner = centre_x, bottom_operand(eye_bottom, margin)
    mouth_right_corner = eye_right, mouth_left_corner[1]

    # Left appendage borders
    leftLeg_left = left_operand(body_left, margin)
    leftLeg_top = eye_bottom
    leftLeg_right = body_left
    leftLeg_bottom = bottom_operand(leftLeg_top, appendage_multiplier)
    leftFoot_left = leftLeg_left
    leftFoot_top = leftLeg_bottom
    leftFoot_right = right_operand(leftLeg_left, appendage_multiplier)
    leftFoot_bottom = bottom_operand(leftFoot_top, appendage_multiplier)

    # Right appendage borders
    rightLeg_left = centre_x
    rightLeg_top = body_bottom
    rightLeg_right = right_operand(rightLeg_left, appendage_multiplier)
    rightLeg_bottom = bottom
    rightFoot_left = rightLeg_right
    rightFoot_top = top_operand(bottom, appendage_multiplier)
    rigthFoot_right = right_operand(rightLeg_right, appendage_multiplier)
    rightFoot_bottom = bottom

    # Draw Karel
    match orientation.lower():
        case "east" | "east-flipped" | "west" | "west-flipped":
            if not transparent:
                # Meat
                top_fill = canvas.create_rectangle(
                    top_left_corner[0],
                    top_left_corner[1],
                    right_diagonal_top[0],
                    eye_top,
                    background,
                    background
                )
                top_corner_fill = canvas.create_polygon(
                    right_diagonal_top[0] , right_diagonal_top[1],
                    right_diagonal_bottom[0], right_diagonal_bottom[1],
                    eye_right, eye_top,
                    color = background,
                    outline = background
                )
                left_fill = canvas.create_rectangle(
                    top_left_corner[0],
                    eye_top,
                    eye_left,
                    left_diagonal_top[1],
                    background,
                    background
                )
                right_fill = canvas.create_rectangle(
                    eye_right,
                    eye_top,
                    right_diagonal_bottom[0],
                    eye_bottom,
                    background,
                    background
                )
                bottom_fill = canvas.create_rectangle(
                    eye_left,
                    eye_bottom,
                    bottom_right_corner[0],
                    bottom_right_corner[1],
                    background,
                    background
                )
                bottom_corner_fill = canvas.create_polygon(
                    left_diagonal_top[0], left_diagonal_top[1],
                    eye_left, left_diagonal_top[1],
                    left_diagonal_bottom[0], left_diagonal_bottom[1],
                    color = background,
                    outline = background
                )
            
            # Outlines
            top_line = canvas.create_line(
                top_left_corner[0], top_left_corner[1],
                right_diagonal_top[0], right_diagonal_top[1],
                colour
            )
            top_corner = canvas.create_line(
                right_diagonal_top[0], right_diagonal_top[1],
                right_diagonal_bottom[0], right_diagonal_bottom[1],
                colour
            )
            left_line = canvas.create_line(
                top_left_corner[0], top_left_corner[1],
                left_diagonal_top[0], left_diagonal_top[1],
                colour
            )
            bottom_corner = canvas.create_line(
                left_diagonal_top[0], left_diagonal_top[1],
                left_diagonal_bottom[0], left_diagonal_bottom[1],
                colour
            )
            bottom_line = canvas.create_line(
                left_diagonal_bottom[0], left_diagonal_bottom[1],
                bottom_right_corner[0], bottom_right_corner[1],
                colour
            )
            right_line = canvas.create_line(
                right_diagonal_bottom[0], right_diagonal_bottom[1],
                bottom_right_corner[0], bottom_right_corner[1],
                colour
            )
            left_leg = canvas.create_rectangle(
                leftLeg_left,
                leftLeg_top,
                leftLeg_right,
                leftLeg_bottom,
                colour,
                colour
            )
            left_foot = canvas.create_rectangle(
                leftFoot_left,
                leftFoot_top,
                leftFoot_right,
                leftFoot_bottom,
                colour,
                colour
            )
            right_leg = canvas.create_rectangle(
                rightLeg_left,
                rightLeg_top,
                rightLeg_right,
                rightLeg_bottom,
                colour,
                colour
            )
            right_foot = canvas.create_rectangle(
                rightFoot_left,
                rightFoot_top,
                rigthFoot_right,
                rightFoot_bottom,
                colour,
                colour
            )
            eye = canvas.create_rectangle(
                eye_left,
                eye_top,
                eye_right,
                eye_bottom,
                "transparent",
                colour,
            )
            mouth = canvas.create_line(
                mouth_left_corner[0], mouth_left_corner[1],
                mouth_right_corner[0], mouth_right_corner[1],
                colour
            )
        
        case "north" | "north-flipped" | "south" | "south-flipped":
            if not transparent:
                # Meat
                top_fill = canvas.create_rectangle(

                    top_left_corner[1],             # Top Y
                    right_diagonal_top[0],          # Right X
                    eye_top,                        # Bottom Y
                    top_left_corner[0],             # Left X
                    background,
                    background
                )
                top_corner_fill = canvas.create_polygon(
                    right_diagonal_top[1] , right_diagonal_top[0],
                    right_diagonal_bottom[1], right_diagonal_bottom[0],
                    eye_top, eye_right,
                    color = background,
                    outline = background
                )
                left_fill = canvas.create_rectangle(
                    
                    eye_top,
                    eye_left,
                    left_diagonal_top[1],
                    top_left_corner[0],
                    background,
                    background
                )
                right_fill = canvas.create_rectangle(
                    
                    eye_top,
                    right_diagonal_bottom[0],
                    eye_bottom,
                    eye_right,
                    background,
                    background
                )
                bottom_fill = canvas.create_rectangle(
                    
                    eye_bottom,
                    bottom_right_corner[0],
                    bottom_right_corner[1],
                    eye_left,
                    background,
                    background
                )
                bottom_corner_fill = canvas.create_polygon(
                    left_diagonal_top[1], left_diagonal_top[0],
                    left_diagonal_top[1], eye_left,
                    left_diagonal_bottom[1], left_diagonal_bottom[0],
                    color = background,
                    outline = background
                )
            
            # Outlines
            top_line = canvas.create_line(
                top_left_corner[1], top_left_corner[0],
                right_diagonal_top[1], right_diagonal_top[0],
                colour
            )
            top_corner = canvas.create_line(
                right_diagonal_top[1], right_diagonal_top[0],
                right_diagonal_bottom[1], right_diagonal_bottom[0],
                colour
            )
            left_line = canvas.create_line(
                top_left_corner[1], top_left_corner[0],
                left_diagonal_top[1], left_diagonal_top[0],
                colour
            )
            bottom_corner = canvas.create_line(
                left_diagonal_top[1], left_diagonal_top[0],
                left_diagonal_bottom[1], left_diagonal_bottom[0],
                colour
            )
            bottom_line = canvas.create_line(
                left_diagonal_bottom[1], left_diagonal_bottom[0],
                bottom_right_corner[1], bottom_right_corner[0],
                colour
            )
            right_line = canvas.create_line(
                right_diagonal_bottom[1], right_diagonal_bottom[0],
                bottom_right_corner[1], bottom_right_corner[0],
                colour
            )
            left_leg = canvas.create_rectangle(
                leftLeg_top,
                leftLeg_right,
                leftLeg_bottom,
                leftLeg_left,
                colour,
                colour
            )
            left_foot = canvas.create_rectangle(
                leftFoot_top,
                leftFoot_right,
                leftFoot_bottom,
                leftFoot_left,
                colour,
                colour
            )
            right_leg = canvas.create_rectangle(
                rightLeg_top,
                rightLeg_right,
                rightLeg_bottom,
                rightLeg_left,
                colour,
                colour
            )
            right_foot = canvas.create_rectangle(
                rightFoot_top,
                rigthFoot_right,
                rightFoot_bottom,
                rightFoot_left,
                colour,
                colour
            )
            eye = canvas.create_rectangle(
                eye_top,
                eye_right,
                eye_bottom,
                eye_left,
                "transparent",
                colour,
            )
            mouth = canvas.create_line(
                mouth_left_corner[1], mouth_left_corner[0],
                mouth_right_corner[1], mouth_right_corner[0],
                colour
            )

    # Return each object so it can later be altered/destroyed
    if transparent:
        shapes = {
            "top_line": top_line,
            "top_corner": top_corner,
            "left_line": left_line,
            "bottom_corner": bottom_corner,
            "bottom_line": bottom_line,
            "right_line": right_line,
            "left_leg": left_leg,
            "left_foot": left_foot,
            "right_foot": right_foot,
            "right_leg": right_leg,
            "right_foot": right_foot,
            "eye": eye,
            "mouth": mouth
        }
    else:   # Not transparent
        shapes = {
            "top_fill": top_fill,
            "top_corner_fill": top_corner_fill,
            "left_fill": left_fill,
            "right_fill": right_fill,
            "bottom_fill": bottom_fill,
            "bottom_corner_fill": bottom_corner_fill,
            "top_line": top_line,
            "top_corner": top_corner,
            "left_line": left_line,
            "bottom_corner": bottom_corner,
            "bottom_line": bottom_line,
            "right_line": right_line,
            "left_leg": left_leg,
            "left_foot": left_foot,
            "right_foot": right_foot,
            "right_leg": right_leg,
            "right_foot": right_foot,
            "eye": eye,
            "mouth": mouth
        }

    arguments = [canvas, centre_x, centre_y, size, orientation, colour, background, transparent]
    logger.debug(f"Created Karel: {shapes, arguments}")
    return [shapes, arguments]