JSON data base manager init
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DBManager.py
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402
DBManager.py
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import json
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import os.path
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# PRZYKLADOWY SCHEMAT DB
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# informacje o dacie dnia dzisiejszego oraz nazwie tego dnia (pon, wt) będzie trzeba podawać przy inicjalizacji klasy
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# może być od użytkownika z konsoli lub od systemu
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# {
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# "06.06.2021": [
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# {
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# "date": "06.06.2021",
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# "time": "12:00-13:30",
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# "place": "Restauracja Alfa",
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# "participants": ["Jan Kowalski", "Adam Nowak"],
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# "description": None
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# },
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# {
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# "date": "06.06.2021",
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# "time": "18:00-18:45",
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# "place": "Stadion Miejski",
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# "participants": ["Jan Kowalski"],
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# "description": None
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# }
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# ],
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# "07.06.2021": [
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# {
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# "date": "07.06.2021",
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# "time": "9:00-10:30",
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# "place": "MS Teams",
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# "participants": ["Adam Nowak"],
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# "description": "Wykład z matematyki"
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# }
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# ]
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# }
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class calender_db:
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def __init__(self, date="07.06.2021", name="poniedziałek", start_day_time="8:00", end_day_time="20:00", file_path="data-base/calender.json"):
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self.DB = {}
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self.start_day_time = start_day_time
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self.end_day_time = end_day_time
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self.today_date = date
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self.today_day_name = name
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self.today_day, self.today_month, self.today_year = self.get_day_month_year(self.today_date)
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if os.path.isfile(file_path):
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with open(file_path, 'r+') as input:
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self.DB = json.load(input)
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def save_db(self):
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with open(file_path, 'w+') as output:
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self.DB = json.dumps(input)
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# CRUD methods
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def create_meeting(self, meeting_dict):
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date = meeting_dict['date'].lower()
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if date == "dziś":
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date = self.today_date
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elif is_date_day_name(date):
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offset = get_days_difference(date)
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date = calculate_date_with_offset(offset)
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#TODO chceck date format
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if date in self.DB.keys():
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self.DB[date].append(meeting_dict)
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self.save_db()
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else:
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self.DB[date] = [meeting_dict]
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self.save_db()
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def is_collision(self, date, time):
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# TODO zaimplementować oferowanie innego czasu w razie kolizji
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if date in self.DB.keys():
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meetings = DB[date]
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for m in meetings:
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meeting_time = m['time'].split("-")
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start = meeting_time[0]
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# meeting has start and end time
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if len(meeting_time > 1):
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end = meeting_time[1]
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seeking_hour, seeking_min = self.get_hour_minutes(time)
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seeking_hour_s, seeking_min_s = self.get_hour_minutes(start)
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seeking_hour_e, seeking_min_e = self.get_hour_minutes(end)
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if seeking_hour < seeking_hour_s:
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return False
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if seeking_hour == seeking_hour_s and seeking_min < seeking_min_s:
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return False
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if seeking_hour == seeking_hour_e and seeking_min >= seeking_min_e:
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return False
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if seeking_hour > seeking_hour_e:
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return False
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return True
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# meeting has only start time
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else:
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seeking_hour, seeking_min = self.get_hour_minutes(time)
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seeking_hour_s, seeking_min_s = self.get_hour_minutes(start)
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if seeking_hour == seeking_hour_s and seeking_min == seeking_min_s:
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return True
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else:
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return False
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else:
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return False
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def is_collision(self, date, time_start, time_end):
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# TODO zaimplementować oferowanie innego czasu w razie kolizji
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if date in self.DB.keys():
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meetings = DB[date]
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for m in meetings:
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meeting_time = m['time'].split("-")
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start = meeting_time[0]
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# meeting has start and end time
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if len(meeting_time > 1):
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end = meeting_time[1]
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hour_s, min_s = self.get_hour_minutes(time_start)
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hour_e, min_e = self.get_hour_minutes(time_end)
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seeking_hour_s, seeking_min_s = self.get_hour_minutes(start)
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seeking_hour_e, seeking_min_e = self.get_hour_minutes(end)
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if hour_s < seeking_hour_s and hour_e < seeking_hour_s:
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return False
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if hour_s < seeking_hour_s and hour_e == seeking_hour_s and min_e <= seeking_min_s:
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return False
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if hour_s == seeking_hour_s and min_s < seeking_min_s and hour_e == seeking_hour_s and min_e <= seeking_min_s:
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return False
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if hour_s == seeking_hour_e and min_s >= seeking_min_e:
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return False
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if hour_s > seeking_hour_e:
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return False
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return True
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# meeting has only start time
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else:
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seeking_hour, seeking_min = self.get_hour_minutes(time)
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seeking_hour_s, seeking_min_s = self.get_hour_minutes(start)
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if seeking_hour == seeking_hour_s and seeking_min == seeking_min_s:
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return True
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else:
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return False
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else:
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return False
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def find_meeting(self, date, time):
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if date in self.DB.keys():
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meetings = DB[date]
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for m in meetings:
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if time == m['time']:
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return m
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return None
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else:
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return None
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def get_meetings(self, date_list):
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meetings = []
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for date in date_list:
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if date in self.DB.keys():
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date_meetings = self.DB[date]
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for m in date_meetings:
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meetings.append(m)
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return meetings
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def get_freetime(self, date_list):
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freetime_dict = {}
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for date in date_list:
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time_str = self.start_day_time + "-" + self.end_day_time
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freetime_dict[date] = [time_str]
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# Change free time if there are meetings at this day
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if date in self.DB.keys():
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for meeting in self.DB[date]:
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meeting_time = meeting['time'].split("-")
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start = meeting_time[0]
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# meeting has start and end time
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if len(meeting_time > 1):
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end = meeting_time[1]
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meet_start_h, meet_start_m = self.get_hour_minutes(start)
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meet_end_h, meet_end_m = self.get_hour_minutes(end)
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for slot in freetime_dict[date]:
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slot_time = slot.split("-")
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slot_start_h, slot_start_m = self.get_hour_minutes(slot_time[0])
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slot_end_h, slot_end_m = self.get_hour_minutes(slot_time[1])
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# if meeting time have collision with slot time - change / split slot
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# meeting starts inside slot
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if meet_start_h == slot_start_h and meet_start_m > slot_start_m and meet_start_h < slot_end_h:
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pass
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elif meet_start_h == slot_start_h and meet_start_m > slot_start_m and meet_start_h == slot_end_h and meet_start_m < slot_end_m:
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pass
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elif meet_start_h > slot_start_h and meet_start_h < slot_end_h:
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pass
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elif meet_start_h > slot_start_h and meet_start_h == slot_end_h and meet_start_m < slot_end_m:
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pass
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# starts before slot, ends inside slot
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elif (meet_end_h > slot_start_h) or (meet_end_h == slot_start_h and meet_end_m > slot_start_h):
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# meeting in whole slot - delete this slot
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if meet_end_h == slot_end_h and meet_end_m == slot_end_m:
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pass
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# cut slot from left side
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else:
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pass
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# if meeting starts and ends before slot start time - do nothing
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# meeting has only start time
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else:
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m_start_h, m_start_m = self.get_hour_minutes(start)
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def update_meeting(self, date, time, new_meeting_dict):
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# TODO nie testowane
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if date in self.DB.keys():
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meetings = DB[date]
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to_update = next(m for m in meetings if m['time'] == time)
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if type(to_update) is dict:
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to_update = new_meeting_dict
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self.save_db()
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def delete_meeting(self, date, time):
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# TODO nie testowane
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if date in self.DB.keys():
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meetings = DB[date]
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to_delete = next(m for m in meetings if m['time'] == time)
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if type(to_delete) is dict:
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del to_delete
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self.save_db()
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# other methods
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def get_hour_minutes(self, time):
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temp = time.split(":")
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return int(temp[0]), int(temp[1])
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def get_day_month_year(self, date):
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temp = date.split(".")
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return int(temp[0]), int(temp[1]), int(temp[2])
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def calculate_date_with_offset(self, offset):
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last_month_day = self.month_last_day(self.today_month, self.today_year)
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new_day = self.today_day + offset
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if new_day > last_month_day:
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while True:
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difference = new_day - last_month_day
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if self.today_month == 12:
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new_month = 1
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new_year = self.today_year+1
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else:
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new_month = self.today_month+1
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new_year = self.today_year
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last_month_day = self.month_last_day(new_month, new_year)
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new_day = difference
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if new_day <= last_month_day:
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date_str = ""
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if new_day < 10:
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date_str += "0"
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date_str += str(new_day)
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date_str += "."
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if new_month < 10:
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date_str += "0"
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date_str += str(new_month)
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date_str += "."
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date_str += str(new_year)
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return date_str
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else:
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date_str = ""
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if new_day < 10:
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date_str += "0"
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date_str += str(new_day)
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date_str += "."
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if self.today_month < 10:
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date_str += "0"
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date_str += str(self.today_month)
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date_str += "."
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date_str += str(self.today_year)
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return date_str
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def month_last_day(self, month, year):
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last_month_day = 30
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if month == 1 or month == 3 or month == 5 or month == 7 or month == 8 or month == 10 or month == 12:
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last_month_day = 31
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elif month == 2:
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if year % 4 == 0:
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last_month_day = 29
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else:
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last_month_day = 28
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return last_month_day
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def is_date_day_name(self, date):
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if date == "poniedziałek":
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return True
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if date == "wtorek":
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return True
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if date == "środa":
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return True
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if date == "czwartek":
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return True
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if date == "piątek":
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return True
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if date == "sobota":
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return True
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if date == "niedziela":
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return True
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return False
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def get_days_difference(self, date):
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if date == "poniedziałek":
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if date == "poniedziałek":
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return 7
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if date == "wtorek":
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return 1
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if date == "środa":
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return 2
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if date == "czwartek":
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return 3
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if date == "piątek":
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return 4
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if date == "sobota":
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return 5
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if date == "niedziela":
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return 6
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if date == "wtorek":
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if date == "poniedziałek":
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return 6
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if date == "wtorek":
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return 7
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if date == "środa":
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return 1
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if date == "czwartek":
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return 2
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if date == "piątek":
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return 3
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if date == "sobota":
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return 4
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if date == "niedziela":
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return 5
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if date == "środa":
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if date == "poniedziałek":
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return 5
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if date == "wtorek":
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return 6
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if date == "środa":
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return 7
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if date == "czwartek":
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return 1
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if date == "piątek":
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return 2
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if date == "sobota":
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return 3
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if date == "niedziela":
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return 4
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if date == "czwartek":
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if date == "poniedziałek":
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return 4
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if date == "wtorek":
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return 5
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if date == "środa":
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return 6
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if date == "czwartek":
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return 7
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if date == "piątek":
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return 1
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if date == "sobota":
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return 2
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if date == "niedziela":
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return 3
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if date == "piątek":
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if date == "poniedziałek":
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return 3
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if date == "wtorek":
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return 4
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if date == "środa":
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return 5
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if date == "czwartek":
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return 6
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if date == "piątek":
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return 7
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if date == "sobota":
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return 1
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if date == "niedziela":
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return 2
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if date == "sobota":
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if date == "poniedziałek":
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return 2
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if date == "wtorek":
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return 3
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if date == "środa":
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return 4
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if date == "czwartek":
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return 5
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if date == "piątek":
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return 6
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if date == "sobota":
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return 7
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if date == "niedziela":
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return 1
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if date == "niedziela":
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if date == "poniedziałek":
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return 1
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if date == "wtorek":
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return 2
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if date == "środa":
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return 3
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if date == "czwartek":
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return 4
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if date == "piątek":
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return 5
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if date == "sobota":
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return 6
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if date == "niedziela":
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return 7
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