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todo.py
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todo.py
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import re
import calendar
from datetime import datetime, timedelta
DONE_TAG = '@done'
RECURRING_TAG = '@recurring'
WEEKLY_TAG = '@weekly'
TASK_PATTERN = r'^\s*(\[[ x]\])\s*([^@]+)(@\w+)?\s*(' + DONE_TAG + r')?\s*(\(.+\))?$'
TASK_TIMESTAMP = r'(%y-%m-%d %H:%M)'
DAY_HEADER_FORMAT = 'Day of %m/%d/%Y:'
WEEK_HEADER_FORMAT = '%m/%d'
statusd = {
'pending': '[ ]',
'completed': '[x]',
'cancelled': '[-]'
}
priorityd = {
'today': 1,
'critical': 2,
'high': 3,
'low': 4,
'default': 5
}
class Task:
def __init__(self, status='pending', description='', tags=None, timestamp=None, priority='default', recurring=False, archived=False):
self.status = status
self.description = description
self.tags = tags if tags is not None else []
self.timestamp = timestamp
self.priority = priority
self.recurring = recurring
self.archived = archived
def __str__(self):
tags = ' ' + ' '.join(self.tags) if self.tags else ''
priority = f' @{self.priority}' if self.priority and self.priority != 'default' else ''
recurring = f' {RECURRING_TAG}' if self.recurring else ''
done = f' {DONE_TAG}' if self.status == 'completed' else ''
timestamp = f' {self.timestamp.strftime(TASK_TIMESTAMP)}' if self.timestamp else ''
return f' {statusd[self.status]} {self.description}{tags}{priority}{recurring}{done}{timestamp}\n'
def parse(self, line):
match = re.search(TASK_PATTERN, line)
if match and match[1] and match[2]:
self.status = list(statusd.keys())[list(statusd.values()).index(match[1])]
self.description = match[2].strip()
self._parse_tag(match[3])
self._parse_tag(match[4])
try:
self.timestamp = datetime.strptime(match[5], TASK_TIMESTAMP)
except:
pass
else:
raise ValueError(f"could not parse task '{line}'")
def is_completed(self):
return self.status == 'completed'
def mark_pending(self):
self.status = 'pending'
self.timestamp = None
def _parse_tag(self, tag):
if not tag: return
if tag[1:] in priorityd.keys():
self.priority = tag[1:]
return
if tag == DONE_TAG:
self.status = 'completed'
return
if tag == RECURRING_TAG:
self.recurring = True
return
self.tags.append(tag)
class Todo:
header_date_format = '%m/%d/%Y'
header_date_pattern = r'(\d{2}/\d{2}/\d{4})'
section_header_pattern = r'^\s*(\w+:)$'
def __init__(self, sdate=None):
self._header = ''
self._sdate = sdate
# self.logger = logger
self.tasks = []
self.sections = []
def __str__(self):
header = self.get_header_string()
content = self.get_content(sort='priority')
return header + content
def load(self, fpath):
with open(fpath) as file:
lines = file.readlines()
self.parse(lines)
def update(self, archive_todo):
self._header = self.get_header(self._sdate)
self._update_tasks(self, archive_todo)
for section in self.sections:
self._update_tasks(section, archive_todo)
def write(self, fpath):
with open(fpath, 'w') as file:
file.write(self.__str__())
def parse(self, lines):
self._header = lines.pop(0).strip()
i = 0
for line in lines:
if re.search(self.section_header_pattern, line):
section = TodoSection()
section.parse(lines[i:])
self.sections.append(section)
break
i += 1
self.parse_tasks(lines[:i])
def parse_tasks(self, lines):
for line in lines:
task = Task()
task.parse(line)
self.append(task)
def append(self, task):
self.tasks.append(task)
def get_header_string(self):
return f'{self.header}\n'
def get_content(self, sort=None):
tasks = sorted(self.tasks, key=lambda t: priorityd[t.priority]) if sort == 'priority' else self.tasks
sresult = self._get_list_string(tasks)
for section in self.sections:
sresult += str(section)
return sresult
def get_tasks_string(self):
return self._get_list_string(self.tasks)
def _update_tasks(self, todo, archive_todo):
rtasks = []
for task in todo.tasks:
if task.recurring:
task.mark_pending()
elif task.is_completed():
is_weekly = isinstance(todo, WeeklyTodo)
# self.logger.info(f"archiving task: '{str(task).strip()}'")
archive_todo.append(task, self.sdate, is_weekly)
rtasks.append(task)
todo.tasks = [t for t in todo.tasks if t not in rtasks]
def _get_list_string(self, li):
return ''.join([str(it) for it in li])
class TodoSection(Todo):
def __init__(self, header='', level=1):
super().__init__()
self._header = header
self.level = level
def __str__(self):
task_lines = [f'{self.indent}{str(task)}' for task in self.tasks]
return f'{self.indent}{self._header}\n' + ''.join(task_lines)
@property
def indent(self):
return ' ' * self.level
class DailyTodo(Todo):
header_format = 'Day of {}:'
fname_format = '%Y-%m-%d'
fname_pattern = r'(\d+-\d+-\d+)'
@property
def header(self):
if self._header:
return self._header
if self._sdate:
return self.get_header(self._sdate)
return None
@property
def sdate(self):
if self._sdate:
return self._sdate
if self._header:
pattern = self.header_format.format(self.header_date_pattern)
match = re.search(pattern, self._header)
if match:
return datetime.strptime(match[1], self.header_date_format).date()
return None
def get_header(self, sdate):
return sdate.strftime(self.header_format.format(self.header_date_format))
class WeeklyTodo(Todo):
header_format = 'Week of {} - {}:'
fname_date_format = '%Y-%m'
fname_format = '{}-week-{}'
fname_pattern = r'(\d+-\d+)-week-(\d+)'
def get_header(self, sdate):
edate = self.get_edate(sdate)
return self.header_format.format(sdate.strftime(self.header_date_format), edate.strftime(self.header_date_format))
def get_edate(self, sdate):
return sdate + timedelta(days=6)
@property
def header(self):
if self._header:
return self._header
if self._sdate:
return self.get_header(self._sdate)
return None
@property
def sdate(self):
if self._sdate:
return self._sdate
if self._header:
pattern = self.header_format.format(self.header_date_pattern, self.header_date_pattern)
match = re.search(pattern, self._header)
if match:
return datetime.strptime(match[1], self.header_date_format).date()
return None
@property
def edate(self):
if not self.sdate: return None
return self.get_edate(self.sdate)
@property
def month_week_number(self):
return self.get_month_week_number(self.sdate)
@property
def iso_week_number(self):
return self.get_iso_week_number(self.sdate)
@staticmethod
def get_iso_week_number(pdate):
return pdate.isocalendar()[1]
@staticmethod
def get_month_week_number(pdate):
return pdate.isocalendar()[1] - pdate.replace(day=1).isocalendar()[1] + 1
@staticmethod
def get_first_day_of_week(pdate):
weekday = calendar.weekday(pdate.year, pdate.month, pdate.day)
fdate = pdate - timedelta(days=weekday)
return fdate
class ArchiveTodo():
header_format = '%m/%d/%Y:'
header_pattern = r'(\d{2}/\d{2}/\d{4}:)'
def __init__(self):
self.todos = []
def __str__(self):
svalue = ''
for todo in sorted(self.todos, key=lambda t: t.sdate):
header = todo.sdate.strftime(self.header_format)
svalue += f'{header}\n'
svalue += todo.get_tasks_string()
return svalue
def load(self, fpath):
with open(fpath) as file:
lines = file.readlines()
self.parse(lines)
def write(self, fpath):
with open(fpath, 'w') as file:
file.write(self.__str__())
def parse(self, lines):
for line in lines:
match = re.search(self.header_pattern, line)
if match:
tdate = datetime.strptime(match[1], self.header_format).date()
todo = DailyTodo(tdate)
self.todos.append(todo)
else:
task = Task()
task.parse(line)
todo.tasks.append(task)
def append(self, task, pdate, is_weekly=False):
task.priority = None # remove unnecesary tag
if is_weekly:
task.tags.insert(0, WEEKLY_TAG)
if task.timestamp:
pdate = task.timestamp.date()
todos_on_date = [t for t in self.todos if t.sdate == pdate]
if todos_on_date:
todos_on_date[0].append(task)
else:
todo = DailyTodo(pdate)
todo.append(task)
self.todos.append(todo)