Read and process MTGA log events

load_arena_cards.py

import json


def arena_card_db():
    carddb = dict()
    with open("AllCards.json", 'r') as mtgjsonf:
        carddb = json.load(mtgjsonf)

    arena_cards = list()
    for card_name, card in carddb.items():
        if 'mtgArenaId' in card:
            arena_cards.append(card)
    return carddb

read_log.py

from load_arena_cards import arena_card_db


def get_json_event(logfile):
    lines = logfile.split('\n')
    current_block = ""
    for idx, line in enumerate(lines):
        if line and (line.startswith("[UnityCrossThreadLogger]") or line.startswith("[Client GRE]")):
            # this is the start of a new block (with title), end the last one
            # print(current_block)
            if "{" in current_block:  # try to speed up debug runs by freeing up json watcher task
                # which is likely the slowest
                last_idx = current_block.rindex("}")
                # ^ After gamestate logs, there is garbage (non-json) in the same block; strip it out
                # TODO: this is hella hacky and should be fixed
                current_block = current_block[:last_idx + 1]
                new_logfile = "\n".join(lines[idx + 1:])
                return current_block, new_logfile
            current_block = line.strip() + "\n"
        elif line and line.startswith("]") or line.startswith("}"):
            current_block += line.strip() + "\n"
            # this is the END of a block, end it and start a new one
            if "{" in current_block:  # try to speed up debug runs by freeing up json watcher task
                # which is likely the slowest
                new_logfile = "\n".join(lines[idx + 1:])
                return current_block, new_logfile
            current_block = ""
        else:
            # we're in the middle of a block somewhere
            stripped = line.strip()
            if stripped:
                current_block += stripped + "\n"
    return current_block, ""


def main():
    carddb = arena_card_db()
    logdata = ""
    # with open('output_log.txt') as lf:
    # logdata = lf.read()
    logdata = '''
[UnityCrossThreadLogger] asdfasdfasdfasdfasdf
{
asdasdfasdf
}
[UnityCrossThreadLogger] shorter this time
{
12364576768
}
    '''
    events = list()
    while True:
        event, logdata = get_json_event(logdata)
        print('EVENT: "{}"\n\nLOGDATA: "{}"'.format(event, logdata))
        if logdata.strip() == "":
            break


if __name__ == '__main__':
    main()