<gh_stars>0
"""
SC101 Baby Names Project
Adapted from <NAME>'s Baby Names assignment by
<NAME>.

YOUR DESCRIPTION HERE
"""

import tkinter
import babynames
import babygraphicsgui as gui
from campy.gui.events.timer import pause

FILENAMES = [
    'data/full/baby-1900.txt', 'data/full/baby-1910.txt',
    'data/full/baby-1920.txt', 'data/full/baby-1930.txt',
    'data/full/baby-1940.txt', 'data/full/baby-1950.txt',
    'data/full/baby-1960.txt', 'data/full/baby-1970.txt',
    'data/full/baby-1980.txt', 'data/full/baby-1990.txt',
    'data/full/baby-2000.txt', 'data/full/baby-2010.txt'
]
CANVAS_WIDTH = 1000
CANVAS_HEIGHT = 600
YEARS = [1900, 1910, 1920, 1930, 1940, 1950, 1960, 1970, 1980, 1990, 2000, 2010]
GRAPH_MARGIN_SIZE = 20
COLORS = ['red', 'purple', 'green', 'blue']
TEXT_DX = 2
LINE_WIDTH = 2
MAX_RANK = 1000
DELAY = 20


def get_x_coordinate(width, year_index):
    """
    Given the width of the canvas and the index of the current year
    in the YEARS list, returns the x coordinate of the vertical
    line associated with that year.

    Input:
        width (int): The width of the canvas
        year_index (int): The index of the current year in the YEARS list
    Returns:
        x_coordinate (int): The x coordinate of the vertical line associated
                              with the specified year.
    """
    year_space = (width-GRAPH_MARGIN_SIZE)//len(YEARS)
    x_coordinate = GRAPH_MARGIN_SIZE+int(year_index)*year_space
    return x_coordinate


def draw_fixed_lines(canvas):
    """
    Erases all existing information on the given canvas and then
    draws the fixed background lines on it.

    Input:
        canvas (Tkinter Canvas): The canvas on which we are drawing.

    Returns:
        This function does not return any value.
    """
    canvas.delete('all')            # delete all existing lines from the canvas

    # Write your code below this line
    canvas.create_line(GRAPH_MARGIN_SIZE, GRAPH_MARGIN_SIZE, CANVAS_WIDTH-GRAPH_MARGIN_SIZE, GRAPH_MARGIN_SIZE)
    canvas.create_line(GRAPH_MARGIN_SIZE, CANVAS_HEIGHT-GRAPH_MARGIN_SIZE, CANVAS_WIDTH-GRAPH_MARGIN_SIZE,
                       CANVAS_HEIGHT-GRAPH_MARGIN_SIZE)
    for year in range(len(YEARS)):
        x = get_x_coordinate(CANVAS_WIDTH, year)
        canvas.create_line(x, 0, x, CANVAS_HEIGHT)
        canvas.create_text(x+TEXT_DX, CANVAS_HEIGHT-GRAPH_MARGIN_SIZE, text=YEARS[year], font='roboto 12',
                           anchor=tkinter.NW)
    #################################


def draw_names(canvas, name_data, lookup_names):
    """
    Given a dict of baby name data and a list of name, plots
    the historical trend of those names onto the canvas.

    Input:
        canvas (Tkinter Canvas): The canvas on which we are drawing.
        name_data (dict): Dictionary holding baby name data
        lookup_names (List[str]): A list of names whose data you want to plot

    Returns:
        This function does not return any value.
    """
    draw_fixed_lines(canvas)        # draw the fixed background grid

    # Write your code below this line
    rank_space = (CANVAS_HEIGHT-GRAPH_MARGIN_SIZE*2) / MAX_RANK
    color_ct = 0
    for name in lookup_names:  # First for loop is to read the value of key name in name_data
        name_dict = name_data[name]
        point_lst = []  # record the point to draw line
        """
        Second for loop, read the constant YEARS and see if it's in the 
        """
        for i in range(len(YEARS)):
            x_point = get_x_coordinate(CANVAS_WIDTH, i)
            if str(YEARS[i]) in name_dict:
                y_point_in_rank = GRAPH_MARGIN_SIZE+name_dict[str(YEARS[i])]*rank_space
                canvas.create_text(x_point + TEXT_DX, y_point_in_rank, text=name + '  ' + str(name_dict[str(YEARS[i])]),
                                   font='roboto 12', anchor=tkinter.SW, fill=COLORS[color_ct])
                canvas.create_text(x_point + TEXT_DX, y_point_in_rank, text='♥︎', fill=COLORS[color_ct])
                point_lst.append([x_point, y_point_in_rank])
            else:
                y_point_out_of_rank = CANVAS_HEIGHT-GRAPH_MARGIN_SIZE
                canvas.create_text(x_point + TEXT_DX, y_point_out_of_rank, text=name + ' * ',
                                   font='roboto 12', anchor=tkinter.SW, fill=COLORS[color_ct])
                canvas.create_text(x_point + TEXT_DX, y_point_out_of_rank, text='♥︎', fill=COLORS[color_ct])
                point_lst.append([x_point, y_point_out_of_rank])
        for point in range(len(point_lst)):
            if point+1 in range(len(point_lst)):
                canvas.create_line(point_lst[point][0], point_lst[point][1], point_lst[point+1][0],
                                   point_lst[point+1][1], fill=COLORS[color_ct], width=LINE_WIDTH)
                pause(DELAY)
            else:
                break
        color_ct = (color_ct + 1) % len(COLORS)
    #################################


# main() code is provided, feel free to read through it but DO NOT MODIFY
def main():
    # Load data
    name_data = babynames.read_files(FILENAMES)

    # Create the window and the canvas
    top = tkinter.Tk()
    top.wm_title('Baby Names')
    canvas = gui.make_gui(top, CANVAS_WIDTH, CANVAS_HEIGHT, name_data, draw_names, babynames.search_names)

    # Call draw_fixed_lines() once at startup so we have the lines
    # even before the user types anything.
    draw_fixed_lines(canvas)

    # This line starts the graphical loop that is responsible for
    # processing user interactions and plotting data
    top.mainloop()


if __name__ == '__main__':
    main()
