class CLI:
def __init__(self):
self.NewCalendar = Calendar(
) # Initialise a new instance of the calendar object
def prompt(self):
""" Prompt the user to enter a command via the CLI """
print('Enter Command:')
print('view, contacts, create, delete, load, save, quit')
cmd_entered = input()
return cmd_entered
def quit(self):
""" Exit the calendar application """
print('Calendar application closed')
sys.exit(0)
def create_engine(self):
""" Create a meeting or an event in the calendar and check for conflict with existing events """
title = input('Title ?\n')
date = input('Date ?\n')
start_time = input('Start Time ?\n')
end_time = input('End Time ?\n')
isInvite = input('Invite others ? "Yes/yes" or "No/no" \n')
if isInvite == "Yes" or isInvite == "yes":
event_contacts = []
name_i = input('"<Contact Name>" or "done"\n')
while (name_i != 'done'):
contact_i = Contact(name_i, [])
event_contacts.append(contact_i)
name_i = input('"<Contact Name>" or "done"\n')
self.NewCalendar.create_event(title, date, start_time, end_time,
event_contacts)
elif isInvite == "No" or isInvite == "no":
self.NewCalendar.create_event(title, date, start_time, end_time,
[])
else:
print('Enter either Yes/yes or No/no. Quitting...')
self.quit()
return None
def view_engine(self):
""" View either all events or all events associated with a particular contact in a sorted order """
cmd_entered = input('"all" or "<contact name>"\n')
if cmd_entered == 'all':
self.NewCalendar.print_all_events()
else:
status = self.NewCalendar.print_contact_meetings(cmd_entered)
if not status:
print('No such contact present. Quitting... \n')
self.quit()
def contact_engine(self):
""" View all contacts present in the calendar """
sorted_contacts = self.NewCalendar.sort_contacts()
for c in sorted_contacts:
c.print_contact()
def delete_engine(self, index):
""" Deletes/removes the event at index (starting at 1) of the sorted list of events. Uses the __eq__ definition of
the Event class to identify the meeting to be deleted in the Contact class's list_of_meetings and removes it.
Does not remove the contacts associated with the removed event """
self.NewCalendar.delete_event(index)
def save_engine(self, file='calendar.csv'):
""" Saves the calendar in file """
with open(file, 'w') as f:
self.NewCalendar.save(f)
print(f"Saved to {file}")
def load_engine(self, file='calendar.csv'):
""" Loads the calendar from file """
with open(file, 'r') as f:
self.NewCalendar.load(f)
print(f"Loaded from {file}")
def run(self):
""" Run the CLI """
cmd_entered = self.prompt()
while (cmd_entered != 'quit'):
if cmd_entered == 'create': # Creating a new event
self.create_engine()
cmd_entered = self.prompt()
elif cmd_entered == 'delete': # Deleting an existing event
index_to_delete = input(
'Which event ? \n Enter an index 1..n to identify the event from the sorted list\n'
)
self.delete_engine(int(index_to_delete))
cmd_entered = self.prompt()
elif cmd_entered == 'view':
self.view_engine()
cmd_entered = self.prompt()
elif cmd_entered == 'contacts':
self.contact_engine()
cmd_entered = self.prompt()
elif cmd_entered == 'save':
self.save_engine()
cmd_entered = self.prompt()
elif cmd_entered == 'load':
self.load_engine()
cmd_entered = self.prompt()
else:
#If none of the valid command is enetered the CLI will ask again
print('Not a valid command. Re-enter')
cmd_entered = self.prompt()
self.quit()
