#!/usr/bin/env python3


import json
import os
from pathlib import Path
import sys


from commands import MergeRequests, UpdateAssignees, Comments, Merge, Test
from kontr_emails import Parser


COMMANDS = {
    "mrs": MergeRequests,
    "update-assignees": UpdateAssignees,
    "comments": Comments,
    "merge": Merge,
    "test": Test,
}


def print_usage():
    print(f"{sys.argv[0]} <command>")
    print()
    print("Commands:")
    print("\tmrs\t\t\tFetch files and create merge requests for them")
    print("\tupdate-assignees\tUpdate assignees on MRs")
    print("\tcomments\t\tFetch all comments on MRs")
    print("\tmerge\t\t\tMerge all MRs")
    print("\ttest\t\t\tDebugging function")
    # print("Format of date: %Y_%m%d_%H%M%S")


def load_config():
    config_file_path = Path("~/.pushee.json").expanduser()
    if not os.path.exists(config_file_path):
        print("Couldn't find config file", file=sys.stderr)
        exit(1)

    with open(config_file_path) as config_file:
        return json.load(config_file)


def main():
    config = load_config()

    if len(sys.argv) != 2 or sys.argv[1] not in COMMANDS:
        print_usage()
        exit(2)

    submissions = Parser(
        config["mbox_path"], config["deadline"], config["correction"]
    ).parse(config["homework"])
    COMMANDS[sys.argv[1]](submissions)()


if __name__ == "__main__":
    main()