"""
Module which builds a dictionary keyed by issue number from a json file
"""

import argparse
import json

def build_json_file(input_filename, output_filename):
    with open(input_filename, "r") as f:
        json_lines = f.readlines()

    issues = [json.loads(line) for line in json_lines]
    json_dict = {issue["number"]: issue for issue in issues}

    with open(output_filename, "w") as f:
        json.dump(json_dict, f, indent=4)

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("--input_filename", type=str, default="issues.json")
    parser.add_argument("--output_filename", type=str, default="issues_dict.json")
    args = parser.parse_args()
    build_json_file(**vars(args))