Refactor board_randomizer

- Make file read separate and return "dice" or a list of strings from
  dice handling functions for use in downstream programs

src/boggler/board_randomizer.py

@@ -4,9 +4,9 @@ from random import randint, shuffle
 from math import sqrt
 from os import path
 
-def read_dice_file(path):
+def read_dice_file(dice_path: str):
     '''Return list of die strings from file ignoring all comments (#)'''
-    with open(path, 'r+', encoding="utf-8") as file:
+    with open(path.abspath(dice_path), 'r+', encoding="utf-8") as file:
         return [line.rstrip().split(',') for line in file.readlines() if line[0] != "#"]
 
 def roll_die(die: str):
@@ -17,20 +17,19 @@ def roll_dice(dice: list[str]):
     '''Return a random roll for each die'''
     return [ roll_die(die) for die in dice ]
 
-def get_random_board(dice_path):
-    dice_strings = read_dice_file(dice_path)
-    shuffle(dice_strings)
-    rolls = roll_dice(dice_strings)
+def get_random_board(dice: list[str]):
+    shuffle(dice)
+    rolls = roll_dice(dice)
 
     # Format dice rolls for boards file
     board_size = int(sqrt(len(rolls)))
     board = []
-    for i in range(0, len(dice_strings), board_size):
+    for i in range(0, len(dice), board_size):
         board.append(rolls[i:i+board_size])
     return board
 
-def get_random_board_csv(dice_path):
-    board = get_random_board(dice_path)
+def get_random_board_csv(dice: list[str]):
+    board = get_random_board(dice)
     board = [",".join(row) for row in board]
     return board
 
@@ -39,7 +38,8 @@ if __name__ == '__main__':
         print('Usage: python3 board_randomizer.py <dice_file>')
     else:
         try:
-            board = get_random_board_csv(path.abspath(argv[1]))
+            dice = read_dice_file(path.abspath(argv[1]))
+            board = get_random_board_csv(dice)
             for row in board:
                 print(row)
         except Exception as e: