Determine from Whatsapp Logs, who has posted how many times 1337 at 13:37 throughout the years

score1337.py

from dataclasses import dataclass
import re, datetime

LEETTIME = "1337"
LEET_HOUR = "13"
LEET_MINUTE = "37"

datasrc = "./whatsapplog.txt"
scores = {}
class Score:
	def __init__(self, name):
		self.name = name
		self.score = 0
		self.posted_dates = {}

	def add(self, date = None):
		self.score += 1
		if date:
			self.posted_dates[date] = True
	
	def subtract(self):
		self.score -= 1

	def __lt__(self, other):
		return self.score < other.score

@dataclass
class MessageLine:
	date: str
	hour: int
	minute: int
	user_name: str
	text: str

def read_message_line(line):
	# extract date, time user and message from the line
	matchObj = re.match(r'\s*(\d{2}\.\d{2}\.\d{2}),\s(\d{2}):(\d{2})\s-\s(\D+):\s(.*)', line)
	# print(line)
	# skip lines that are just multi line bla bla
	if not matchObj:
		return
	date = matchObj.group(1)
	hour = matchObj.group(2)
	minute = matchObj.group(3)
	user_name = matchObj.group(4)
	text = matchObj.group(5)
	return MessageLine(date, hour, minute, user_name, text)

def eval_current_day(day_scorers):
	if len(day_scorers) == 0:
		return
	elif len(day_scorers) == 1:
		scores[day_scorers[0]].add()
	
def is_leet(hour, minute):
	return (hour == LEET_HOUR or hour == "14") and minute == LEET_MINUTE

def check_user_on_scoreboard(user_name):
	if not user_name in scores:
		scores[user_name] = Score(user_name)


with open(datasrc, 'r') as f:
	current_day = 0
	day_scorers = []
	for line in f:
		# only want lines that contain a date and time at the beginning. Search 1337 lines at 13:37
		
		message = read_message_line(line)
		if not message:
			continue
		
		day_ts = datetime.datetime.strptime(message.date, '%d.%m.%y').timestamp()
		if day_ts > current_day:
			eval_current_day(day_scorers)
			day_scorers = []
			current_day = day_ts

		is_leet_time = is_leet(message.hour, message.minute)
		if is_leet_time and message.text == LEETTIME:
			# check if user is already within score board, otherwise initialize
			check_user_on_scoreboard(message.user_name)
			
			# if hasn't already scored today:
			# add one point and note that has scored today
			if not message.date in scores[message.user_name].posted_dates:
				scores[message.user_name].add(message.date)
				day_scorers.append(message.user_name)

		if message.text == LEETTIME and not is_leet_time:
			check_user_on_scoreboard(message.user_name)
			scores[message.user_name].subtract()


	# final day evaluation
	eval_current_day(day_scorers)

for score in sorted(scores.values()):
	print(f'{score.name}: {score.score}')