2 files changed, 406 insertions, 0 deletions

diff --git a/overlays/worktime/default.nix b/overlays/worktime/default.nix
new file mode 100644
index 00000000..26e1dfed
--- /dev/null
+++ b/overlays/worktime/default.nix
@@ -0,0 +1,19 @@
+final: prev: {
+  worktime = prev.stdenv.mkDerivation rec {
+    name = "worktime";
+    src = ./worktime.py;
+
+    phases = [ "buildPhase" "installPhase" ];
+
+    python = prev.python37.withPackages (ps: with ps; [pyxdg dateutil uritools requests configparser]);
+
+    buildPhase = ''
+      substituteAll $src worktime
+    '';
+
+    installPhase = ''
+      install -m 0755 -D -t $out/bin \
+        worktime
+    '';
+  };
+}
diff --git a/overlays/worktime/worktime.py b/overlays/worktime/worktime.py
new file mode 100755
index 00000000..9e514e65
--- /dev/null
+++ b/overlays/worktime/worktime.py
@@ -0,0 +1,387 @@
+#!@python@/bin/python
+
+import requests
+from requests.exceptions import HTTPError
+from requests.auth import HTTPBasicAuth
+from datetime import *
+from xdg import (BaseDirectory)
+import configparser
+from uritools import uricompose
+
+from dateutil.easter import *
+from dateutil.tz import *
+from dateutil.parser import isoparse
+
+from enum import Enum
+
+from math import (copysign, ceil)
+
+import calendar
+
+import argparse
+
+from copy import deepcopy
+
+class TogglAPISection(Enum):
+    TOGGL = '/api/v8'
+    REPORTS = '/reports/api/v2'
+
+class TogglAPIError(Exception):
+    def __init__(self, http_error, response):
+        self.http_error = http_error
+        self.response = response
+
+    def __str__(self):
+        if not self.http_error is None:
+            return str(self.http_error)
+        else:
+            return self.response.text
+
+class TogglAPI(object):
+    def __init__(self, api_token, workspace_id):
+        self._api_token = api_token
+        self._workspace_id = workspace_id
+
+    def _make_url(self, api=TogglAPISection.TOGGL, section=['time_entries', 'current'], params={}):
+        if api is TogglAPISection.REPORTS:
+          params.update({'user_agent': 'worktime', 'workspace_id': self._workspace_id})
+
+        api_path = api.value
+        section_path = '/'.join(section)
+        uri = uricompose(scheme='https', host='www.toggl.com', path=f"{api_path}/{section_path}", query=params)
+
+        return uri
+
+    def _query(self, url, method):
+
+        headers = {'content-type': 'application/json'}
+        response = None
+
+        if method == 'GET':
+            response = requests.get(url, headers=headers, auth=HTTPBasicAuth(self._api_token, 'api_token'))
+        elif method == 'POST':
+            response = requests.post(url, headers=headers, auth=HTTPBasicAuth(self._api_token, 'api_token'))
+        else:
+            raise ValueError(f"Undefined HTTP method “{method}”")
+
+        response.raise_for_status()
+
+        return response
+
+    def get_billable_hours(self, start_date, end_date=datetime.now(timezone.utc), rounding=False):
+        url = self._make_url(api = TogglAPISection.REPORTS, section = ['summary'], params={'since': start_date.astimezone(timezone.utc).isoformat(), 'until': end_date.astimezone(timezone.utc).isoformat(), 'rounding': rounding})
+        r = self._query(url = url, method='GET')
+        if not r or not r.json():
+            raise TogglAPIError(r)
+        
+        return timedelta(milliseconds=r.json()['total_billable']) if r.json()['total_billable'] else timedelta(milliseconds=0)
+
+    def get_running_clock(self, now=datetime.now(timezone.utc)):
+        url = self._make_url(api = TogglAPISection.TOGGL, section = ['time_entries', 'current'])
+        r = self._query(url = url, method='GET')
+
+        if not r or not r.json():
+            raise TogglAPIError(r)
+
+        if not r.json()['data'] or not r.json()['data']['billable']:
+            return None
+
+        start = isoparse(r.json()['data']['start'])
+
+        return now - start if start <= now else None
+
+class Worktime(object):
+    time_worked = timedelta()
+    running_entry = None
+    now = datetime.now(tzlocal())
+    time_pulled_forward = timedelta()
+    is_workday = False
+    include_running = True
+    time_to_work = None
+    force_day_to_work = True
+
+    def __init__(self, start_datetime=None, end_datetime=None, now=None, include_running=True, force_day_to_work=True, **kwargs):
+      self.include_running = include_running
+      self.force_day_to_work = force_day_to_work
+        
+      if now:
+        self.now = now
+        
+      config = configparser.ConfigParser()
+      config_dir = BaseDirectory.load_first_config('worktime')
+      config.read(f"{config_dir}/worktime.ini")
+      api = TogglAPI(api_token=config['TOGGL']['ApiToken'], workspace_id=config['TOGGL']['Workspace'])
+      date_format = config.get('WORKTIME', 'DateFormat', fallback='%Y-%m-%d')
+
+      start_date = start_datetime or datetime.strptime(config['WORKTIME']['StartDate'], date_format).replace(tzinfo=tzlocal())
+      end_date = end_datetime or self.now
+
+      try:
+          with open(f"{config_dir}/reset", 'r') as reset:
+              for line in reset:
+                  stripped_line = line.strip()
+                  reset_date = datetime.strptime(stripped_line, date_format).replace(tzinfo=tzlocal())
+
+                  if reset_date > start_date and reset_date < end_date:
+                      start_date = reset_date
+      except IOError as e:
+          if e.errno != 2:
+              raise e
+              
+
+      hours_per_week = float(config.get('WORKTIME', 'HoursPerWeek', fallback=40))
+      workdays = set([int(d.strip()) for d in config.get('WORKTIME', 'Workdays', fallback='1,2,3,4,5').split(',')])
+      time_per_day = timedelta(hours = hours_per_week) / len(workdays)
+
+      holidays = dict()
+
+      for year in range(start_date.year, end_date.year + 1):
+          y_easter = datetime.combine(easter(year), time(), tzinfo=tzlocal())
+
+          # Legal holidays in munich, bavaria
+          holidays[datetime(year, 1, 1, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[datetime(year, 1, 6, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[(y_easter+timedelta(days=-2)).date()] = time_per_day
+          holidays[(y_easter+timedelta(days=+1)).date()] = time_per_day
+          holidays[datetime(year, 5, 1, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[(y_easter+timedelta(days=+39)).date()] = time_per_day
+          holidays[(y_easter+timedelta(days=+50)).date()] = time_per_day
+          holidays[(y_easter+timedelta(days=+60)).date()] = time_per_day
+          holidays[datetime(year, 8, 15, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[datetime(year, 10, 3, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[datetime(year, 11, 1, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[datetime(year, 12, 25, tzinfo=tzlocal()).date()] = time_per_day
+          holidays[datetime(year, 12, 26, tzinfo=tzlocal()).date()] = time_per_day
+
+      try:
+          with open(f"{config_dir}/excused", 'r') as excused:
+              for line in excused:
+                  stripped_line = line.strip()
+                  if stripped_line:
+                      splitLine = stripped_line.split(' ')
+                      if len(splitLine) == 2:
+                          [hours, date] = splitLine
+                          day = datetime.strptime(date, date_format).replace(tzinfo=tzlocal()).date()
+                          holidays[day] = timedelta(hours = float(hours))
+                      else:
+                          holidays[datetime.strptime(stripped_line, date_format).replace(tzinfo=tzlocal()).date()] = time_per_day
+      except IOError as e:
+          if e.errno != 2:
+              raise e
+
+      pull_forward = dict()
+      
+      start_day = start_date.date()
+      end_day = end_date.date()
+
+      try:
+          with open(f"{config_dir}/pull-forward", 'r') as excused:
+              for line in excused:
+                  stripped_line = line.strip()
+                  if stripped_line:
+                      [hours, date] = stripped_line.split(' ')
+                      constr = date.split(',')
+                      for d in [start_day + timedelta(days = x) for x in range(0, (end_day - start_day).days + 1 + int(timedelta(hours = float(hours)).total_seconds() / 60 * (7 / len(workdays)) * 2))]:
+                          for c in constr:
+                              if c in calendar.day_abbr:
+                                  if not d.strftime('%a') == c: break
+                              elif "--" in c:
+                                  [fromDay,toDay] = c.split('--')
+                                  if fromDay != "":
+                                      fromDay = datetime.strptime(fromDay, date_format).replace(tzinfo=tzlocal()).date()
+                                      if not fromDay <= d: break
+                                  if toDay != "":
+                                      toDay = datetime.strptime(toDay, date_format).replace(tzinfo=tzlocal()).date()
+                                      if not d <= toDay: break
+                              else:
+                                  if not d == datetime.strptime(c, date_format).replace(tzinfo=tzlocal()).date(): break
+                          else:
+                              if d >= end_date.date():
+                                  pull_forward[d] = min(timedelta(hours = float(hours)), time_per_day - (holidays[d] if d in holidays else timedelta())) 
+      except IOError as e:
+          if e.errno != 2:
+              raise e
+
+      days_to_work = dict()
+
+      if pull_forward:
+          end_day = max(end_day, max(list(pull_forward)))
+          
+      for day in [start_day + timedelta(days = x) for x in range(0, (end_day - start_day).days + 1)]:
+          if day.isoweekday() in workdays:
+              time_to_work = time_per_day
+              if day in holidays.keys():
+                time_to_work -= holidays[day]
+              if time_to_work > timedelta():
+                days_to_work[day] = time_to_work
+
+      extra_days_to_work = dict()
+
+      try:
+          with open(f"{config_dir}/days-to-work", 'r') as extra_days_to_work_file:
+              for line in extra_days_to_work_file:
+                  stripped_line = line.strip()
+                  if stripped_line:
+                      splitLine = stripped_line.split(' ')
+                      if len(splitLine) == 2:
+                          [hours, date] = splitLine
+                          day = datetime.strptime(date, date_format).replace(tzinfo=tzlocal()).date()
+                          extra_days_to_work[day] = timedelta(hours = float(hours))
+                      else:
+                          extra_days_to_work[datetime.strptime(stripped_line, date_format).replace(tzinfo=tzlocal()).date()] = time_per_day
+      except IOError as e:
+          if e.errno != 2:
+              raise e
+
+
+      self.is_workday = self.now.date() in days_to_work or self.now.date() in extra_days_to_work
+
+      self.time_worked = timedelta()
+
+      if self.include_running:
+          self.running_entry = api.get_running_clock(self.now)
+
+      if self.running_entry:
+          self.time_worked += self.running_entry
+
+      if self.running_entry and self.include_running and self.force_day_to_work and not (self.now.date() in days_to_work or self.now.date() in extra_days_to_work):
+          extra_days_to_work[self.now.date()] = timedelta()
+
+      self.time_to_work = sum([days_to_work[day] for day in days_to_work.keys() if day <= end_date.date()], timedelta())
+      for day in [d for d in list(pull_forward) if d > end_date.date()]:
+          days_forward = set([d for d in days_to_work.keys() if d >= end_date.date() and d < day and (not d in pull_forward or d == end_date.date())])
+          extra_days_forward = set([d for d in extra_days_to_work.keys() if d >= end_date.date() and d < day and (not d in pull_forward or d == end_date.date())])
+          days_forward = days_forward.union(extra_days_forward)
+
+          extra_day_time_left = timedelta()
+          for extra_day in extra_days_forward:
+              day_time = max(timedelta(), time_per_day - extra_days_to_work[extra_day])
+              extra_day_time_left += day_time
+          extra_day_time = min(extra_day_time_left, pull_forward[day])
+          time_forward = pull_forward[day] - extra_day_time
+          if extra_day_time_left > timedelta():
+            for extra_day in extra_days_forward:
+                day_time = max(timedelta(), time_per_day - extra_days_to_work[extra_day])
+                extra_days_to_work[extra_day] += extra_day_time * (day_time / extra_day_time_left)
+          
+          hours_per_day_forward = time_forward / len(days_forward) if len(days_forward) > 0 else timedelta()
+          days_forward.discard(end_date.date())
+
+          self.time_pulled_forward += time_forward - hours_per_day_forward * len(days_forward)
+
+      if end_date.date() in extra_days_to_work:
+          self.time_pulled_forward += extra_days_to_work[end_date.date()]
+          
+      self.time_to_work += self.time_pulled_forward
+
+      self.time_worked += api.get_billable_hours(start_date, self.now, rounding = config.getboolean('WORKTIME', 'rounding', fallback=True))
+
+def worktime(**args):
+    worktime = Worktime(**args)
+
+    def format_worktime(worktime):
+      def difference_string(difference):
+        total_minutes_difference = round(difference / timedelta(minutes = 1))
+        (hours_difference, minutes_difference) = divmod(abs(total_minutes_difference), 60)
+        sign = '' if total_minutes_difference >= 0 else '-'
+
+        difference_string = f"{sign}"
+        if hours_difference != 0:
+            difference_string += f"{hours_difference}h"
+        if hours_difference == 0 or minutes_difference != 0:
+            difference_string += f"{minutes_difference}m"
+
+        return difference_string
+
+      difference = worktime.time_to_work - worktime.time_worked
+      total_minutes_difference = 5 * ceil(difference / timedelta(minutes = 5))
+
+      if worktime.running_entry and abs(difference) < timedelta(days = 1) and (total_minutes_difference > 0 or abs(worktime.running_entry) >= abs(difference)) :
+          clockout_time = worktime.now + difference
+          clockout_time += (5 - clockout_time.minute % 5) * timedelta(minutes = 1)
+          clockout_time = clockout_time.replace(second = 0, microsecond = 0)
+
+          if total_minutes_difference >= 0:
+            difference_string = difference_string(total_minutes_difference * timedelta(minutes = 1))
+            return "{difference_string}/{clockout_time}".format(difference_string = difference_string, clockout_time = clockout_time.strftime("%H:%M"))
+          else:
+            difference_string = difference_string(abs(total_minutes_difference) * timedelta(minutes = 1))
+            return "{clockout_time}/{difference_string}".format(difference_string = difference_string, clockout_time = clockout_time.strftime("%H:%M"))
+      else:
+          if worktime.running_entry:
+              difference_string = difference_string(abs(total_minutes_difference) * timedelta(minutes = 1))
+              indicator = '↓' if total_minutes_difference >= 0 else '↑' # '\u25b6'
+
+              return f"{indicator}{difference_string}"
+          else:
+              difference_string = difference_string(total_minutes_difference * timedelta(minutes = 1))
+              if worktime.is_workday:
+                  return difference_string
+              else:
+                  return f"({difference_string})"
+
+    if worktime.time_pulled_forward >= timedelta(minutes = 15):
+        worktime_no_pulled_forward = deepcopy(worktime)
+        worktime_no_pulled_forward.time_to_work -= worktime_no_pulled_forward.time_pulled_forward
+        worktime_no_pulled_forward.time_pulled_forward = timedelta()
+
+        difference_string = format_worktime(worktime)
+        difference_string_no_pulled_forward = format_worktime(worktime_no_pulled_forward)
+
+        print(f"{difference_string_no_pulled_forward}…{difference_string}")
+    else:
+        print(format_worktime(worktime))
+
+def time_worked(now, **args):
+    then = now.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
+    if now.time() == time():
+        now = now + timedelta(days = 1)
+
+    then = Worktime(**dict(args, now = then))
+    now = Worktime(**dict(args, now = now))
+
+    worked = now.time_worked - then.time_worked
+
+    if args['do_round']:
+      total_minutes_difference = 5 * ceil(worked / timedelta(minutes = 5))
+      (hours_difference, minutes_difference) = divmod(abs(total_minutes_difference), 60)
+      sign = '' if total_minutes_difference >= 0 else '-'
+
+      difference_string = f"{sign}"
+      if hours_difference != 0:
+        difference_string += f"{hours_difference}h"
+      if hours_difference == 0 or minutes_difference != 0:
+        difference_string += f"{minutes_difference}m"
+
+      print(difference_string)
+    else:
+      print(worked)
+
+def diff(now, **args):
+    now = now.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
+    then = now - timedelta.resolution
+
+    then = Worktime(**dict(args, now = then, include_running = False))
+    now = Worktime(**dict(args, now = now, include_running = False))
+
+    print(now.time_to_work - then.time_to_work)
+    
+          
+def main():
+    parser = argparse.ArgumentParser(prog = "worktime", description = 'Track worktime using toggl API')
+    parser.add_argument('--time', dest = 'now', metavar = 'TIME', type = lambda s: datetime.fromisoformat(s).replace(tzinfo=tzlocal()), help = 'Time to calculate status for (default: current time)', default = datetime.now(tzlocal()))
+    parser.add_argument('--no-running', dest = 'include_running', action = 'store_false')
+    parser.add_argument('--no-force-day-to-work', dest = 'force_day_to_work', action = 'store_false')
+    subparsers = parser.add_subparsers(help = 'Subcommands')
+    parser.set_defaults(cmd = worktime)
+    time_worked_parser = subparsers.add_parser('time_worked', aliases = ['time', 'worked', 'today'])
+    time_worked_parser.add_argument('--no-round', dest = 'do_round', action = 'store_false')
+    time_worked_parser.set_defaults(cmd = time_worked)
+    diff_parser = subparsers.add_parser('diff')
+    diff_parser.set_defaults(cmd = diff)
+    args = parser.parse_args()
+
+    args.cmd(**vars(args))
+
+if __name__ == "__main__":
+    sys.exit(main())