############################################################
# COMPUTER SCIENCE UNDERGRADUATE SCHOLARSHIP EXAM
# UNIVERSITY OF WAIKATO
# PYTHON PROGRAMMING LANGUAGE
# JULIANO TAVARES (TAURANGA BOYS' COLLEGE YR 13)
############################################################

# Import modules
import sys

# Welcome user
print("Welcome to Visualising Graphs")

# Build the backend of the grid for the graph
def main():
    graph_grid = [[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
                [0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
               ]

# Set variables
max_x = 8
max_y = 24

# Set scale for the graph grid (list)
scale = [4, 3, 2, 1, 0, -1, -2, -3, -4]


# Draw the grid for the graph
graph_grid = [[" " for col in range(max_y + 1)] for row in range(max_x + 1)]

# Draw the vertical line on the first column
for col in range(max_y + 1):
    graph_grid[4][col] = "_"

# Draw the horizontal line on the last row
for row in range(max_x + 1):
    graph_grid[row][0] = "|"

# Reading info from text file
file = open("files/simple_graph_1.txt", "r")
coordinates = file.read()
print("These are the coordinates: ", coordinates)
file.close()

# Draw x's on specific coordinates
for col in range(1, max_x + 1):   
    # [1,1]
    graph_grid[3][2] = "x" 
    # [2,2]
    graph_grid[2][3] = "x" 
    # [3,2]
    graph_grid[2][4] = "x" 
    # [4,1]
    graph_grid[3][5] = "x"
    # [5,0] 
    graph_grid[4][6] = "x"  
    # [6,-1]
    graph_grid[5][7] = "x" 
    # [7,-2]
    graph_grid[6][8] = "x" 
    # [8,-2]
    graph_grid[6][9] = "x" 
    # [9,-1]
    graph_grid[5][10] = "x"
    # [10,0]
    graph_grid[4][11] = "x" 


# Showing the scale on the side of the grid
for row, scale_value in zip(graph_grid, scale):
    # Convert each item in row to a string and join them
    print(f"{scale_value:<5}{''.join(str(item) for item in row)}")


# Stage H - Writing to the file
# Writing a string to file
f.write("There are some new coordinates added to the file.")

# Writing multiple strings
# at a time
file.writelines(L)

# Closing file
file.close()

# Checking if the data is
# written to file or not
file = open('myfile.txt', 'r')
print(file.read())
file.close()