import json
import requests
import sys
import mysql.connector
import datetime
import time

from typing import List

class Application:
    def __init__(self, username):
        """
        Class containing application data

        :param username: player's username
        """
        self.username = username

    def to_insert_query(self):
        """
        Created an SQL insert query from the application

        :return: SQL query string
        """

        return """\
        INSERT INTO minecraft_manager_application
            (username, age, player_type, ever_banned, read_rules, accepted, date)
            VALUES
            ("{}", 16, "Imported from Lasagn Whitelist", FALSE, "Yes", TRUE, "{}");
        """.format(self.username, datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"))

    def __str__(self):
        return self.username


def get_latest_username(uuid: str) -> str:
    """
    Gets the latest username of a player from the mojang api

    :param uuid: player's uuid
    :return: player name
    """

    r = requests.get("https://api.mojang.com/user/profiles/{}/names".format(uuid))

    if r.status_code == 200:
        j = r.json()

        return j[-1]["name"]
    else:
        raise Exception("Error getting user {}. Code: {}: {}".format(uuid, r.status_code, r.text))


def parse_whitelist(whitelist_path: str) -> List[Application]:
    """
    Process all the applications from the whitelist file

    :return: list of applications
    """

    # Load json from file
    with open(whitelist_path, "r") as f:
        whitelist = json.load(f)

    # Parse applications from whitelist data
    applications = []
    for entry in whitelist:
        uuid = entry["uuid"]

        username = get_latest_username(uuid)

        app = Application(username)

        applications.append(app)

        # Prevent Mojang from rate limiting us
        time.sleep(0.5)

    return applications


def insert_apps_into_db(apps: List[Application], host: str, user: str, pw: str, mcm_db_name: str):
    """
    Insert applications into the MCM database

    :param apps: list of applications to import
    :param host: mysql host
    :param user: mysql user
    :param pw: mysql user password
    :param mcm_db_name: MCM database name
    """

    # Open database
    db = mysql.connector.connect(host=host, user=user, password=pw, database=mcm_db_name)
    cursor = db.cursor(buffered=True)

    for app in apps:
        # Check if the player already has an application
        cursor.execute("SELECT * FROM minecraft_manager_application WHERE username = '{}';".format(app.username))

        result = cursor.fetchall()

        # If there is not an existing app, insert the application into the DB
        if len(result) == 0:
            cursor.execute(app.to_insert_query())

    # Commit and close up
    db.commit()
    cursor.close()
    db.close()


def main():
    if len(sys.argv) < 6:
        print("{} [WHITELIST PATH] [MYSQL HOST] [MYSQL USER] [MYSQL PW] [MCM DB Name]".format(sys.argv[0]))
        quit(0)
    else:
        # Parse args
        whitelist_path = sys.argv[1]
        host = sys.argv[2]
        user = sys.argv[3]
        pw = sys.argv[4]
        mc_db_name = sys.argv[5]

        # Parse whitelist
        apps = parse_whitelist(whitelist_path)

        # Insert apps into the database
        insert_apps_into_db(apps, host, user, pw, mc_db_name)


if __name__ == '__main__':
    main()