print_grade

#!/usr/bin/env python3

# This script reads the environment variable GRADE_TABLE and prints the results it contains in human-readable form

import sys, os, json
from grade_utils import round_if_integral, color_print, error_message, print_result



def print_grades():
    """Print the contents of GRADE_TABLE in human-readable form, returning True on success, False on failure"""
    # Read in GRADE_TABLE
    grade_data = os.getenv('GRADE_TABLE')
    if grade_data is None:
        error_message("GRADE_TABLE is empty")
        return False

    # Convert the GRADE_TABLE from JSON to a dictionary
    try:
        grades = json.loads(grade_data)
    except json.JSONDecodeError:
        error_message("GRADE_TABLE is invalid")
        return False

    # Print results
    if not os.getenv("GRADE_QUIET"):
        color_print("blue", "RESULTS:")
        color_print("blue", "---------------------")
        for grade_type in ("success", "failure", "extra", "missed"):
            for points, description in grades[grade_type]:
                print_result(grade_type, points, description)

    # Print total score
    points_possible = round_if_integral(sum(points for points, description in grades["success"] + grades["failure"]))
    points_earned   = round_if_integral(sum(points for points, description in grades["success"] + grades["extra"]))
    if not os.getenv("GRADE_QUIET"):
        color_print("blue", "---------------------")
    color_print("blue", f"TOTAL: {points_earned}/{points_possible}")

    return True



if __name__ == "__main__":
    if not print_grades(): sys.exit(1)