def send(token, channel_id, message):
'''
## DESCRIPTION ##
Given a token, channel_id, and message, decodes the token, and adds the
message 'message' into the messages database with the user of the token.
## TYPES ##
token - string
channel_id - integer
message - string
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- Message is more than 1000 characters
- Message is 0 characters.
AccessError
- Token is invalid
- The user has not joined the channel they are trying to post to
'''
global message_data, next_id
if len(message) <= 0 or len(message) > 1000:
raise InputError(
description="Message must be between 1 and 1000 characters long.")
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int):
raise AccessError(description='Invalid token')
if not aux_common.user_in_channel(user['u_id'], channel_id):
raise AccessError(
description='User is not in the channel that message is being sent to')
next_msg_id = next_id.get('message_id')
if not next_msg_id: # key does not exist yet
next_id['message_id'] = 0
next_msg_id = 0
next_id['message_id'] += 1
message_dict = {
'message_id': next_msg_id,
'message': message,
'sending_u_id': user['u_id'],
'timestamp': datetime.utcnow(),
'channel_id': int(channel_id),
'reacting_u_ids': [],
'pinned': False
}
message_data.append(message_dict)
return {'message_id': len(message_data) - 1}
def sethandle(token, handle_str):
"""
INPUTS: token, handle_str
RETURNS: {}
INPUTERROR:
*2 <= handle_str <= 20
* handle already used
DESCRIPTION: Updates an AUTHORISED user's handle
"""
global user_data
if len(handle_str) >= 20 or len(handle_str) <= 1:
raise InputError(
description='Handle string must be between 1 and 20 characters')
if aux_discrete.check_handle_in_use is False:
raise InputError(description='Handle string is already in use')
if aux_common.decode_token(token) == {'u_id': 'error_invalid_token'}:
raise AccessError(description="Invalid token")
user_id = aux_common.decode_token(token)
for user in user_data:
if user['u_id'] == user_id['u_id']:
user['handle'] = handle_str
return {}
def profile(token, u_id):
"""
INPUTS: token, u_id
DESCRIPTION: For a valid user, Returns information about their user id, email
first name last name and handle
RETURNS: { user }
INPUTERROR:
* User with u_id is not a valid user
"""
if aux_common.decode_token(token) == {'u_id': 'error_invalid_token'}:
raise AccessError(description="Invalid token")
# Input Error
if not aux_discrete.user_exists(u_id):
raise InputError(description=f'User with u_id {u_id} is not valid')
# Loop through all the users and return the right user through its identifiers (u_id)
for user in user_data:
if user['u_id'] == u_id:
# check if i have the layout of the dictionary plss
return {
'user': {
'u_id': user['u_id'],
'email': user['email'],
'name_first': user['first_name'],
'name_last': user['last_name'],
'handle_str': user['handle'],
'profile_img_url': user['profile_img_url']
} # Need to add handle_str to the global data
}
return {}
def setemail(token, email):
"""
INPUTS: token, email
RETURNS: {}
INPUTERROR:
*Email not valid (Copy code)
*Already in use
DESCRIPTION:
Updates authorised user's email address
"""
global user_data
if not aux_discrete.check_email_valid(email):
raise InputError(description='Email is not of valid form')
if not aux_discrete.check_email_in_use(email):
raise InputError(description='Email already in use')
if aux_common.decode_token(token) == {'u_id': 'error_invalid_token'}:
raise AccessError(description="Invalid token")
user_id = aux_common.decode_token(token)
for user in user_data:
if user['u_id'] == user_id['u_id']:
user['email'] = email
return {}
def edit(token, message_id, message):
'''
## DESCRIPTION ##
Given a token and message_id, if the user has requisite permissions, changes the message to
the new message.
## TYPES ##
token - string
message_id - integer
message - string
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- message_id is invalid
- new message is empty or greater than 1000 characters
AccessError if:
- Token is invalid
AccessError if ALL OF THE FOLLOWING:
- User is not the authorised user (the creator of message)
- User is not an owner of this channel
- User is not an owner of the slackr
'''
global message_data
if len(message) <= 0 or len(message) > 1000:
raise InputError(
description="Message must be between 0 and 1000 characters long")
msg_index = aux_discrete.find_message(message_id)
if msg_index == -1:
raise InputError(description='Message ID is invalid.')
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int):
raise AccessError(description="Invalid token")
if not aux_common.user_is_owner_channel(user['u_id'], message_data[msg_index]['channel_id']) \
and not aux_common.user_is_owner_of_slackr(user['u_id']) \
and message_data[msg_index]['sending_u_id'] != user['u_id']:
raise AccessError(
description="User does not have requisite permission to remove the message")
message_data[msg_index]['message'] = message
return {}
def remove(token, message_id):
'''
## DESCRIPTION ##
Given a token and message_id, if the user has requisite permissions, removes the message
message_id
## TYPES ##
token - string
message_id - integer
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- message_id is invalid
AccessError if:
- Token is invalid
AccessError if ALL OF THE FOLLOWING:
- User is not the authorised user (the creator of message)
- User is not an owner of this channel
- User is not an owner of the slackr
'''
global message_data
msg_index = aux_discrete.find_message(message_id)
if msg_index == -1:
raise InputError(description='Message ID is invalid.')
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int):
raise AccessError(description="Invalid token")
if not aux_common.user_is_owner_channel(user['u_id'], message_data[msg_index]['channel_id']) \
and not aux_common.user_is_owner_of_slackr(user['u_id']) and \
message_data[msg_index]['sending_u_id'] != user['u_id']:
raise AccessError(
description="User does not have requisite permission to remove the message")
message_data.pop(msg_index)
return {}
def token_valid(token):
'''
Checks whether a token is valid. If not, raises AccessError.
'''
authorized_caller = decode_token(token)
if authorized_caller["u_id"] == {
"u_id": "error_invalid_token"
} or decode_token(token) == {
"u_id": "error_invalid_token"
}:
raise AccessError('You do not have permission to do this.')
def send_later(token, channel_id, message, time_to_send):
'''
## DESCRIPTION ##
Given a token, channel_id, and message, decodes the token, and adds 'message' into the pending
messages database with the requested time_to_send
instead of datetime.utcnow()
## TYPES ##
token - string
channel_id - integer
message - string
time_to_send - datetime
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- Message is more than 1000 characters
- Message is 0 characters.
- The time_to_send is in the past.
AccessError if
- Token is invalid
- The user has not joined the channel they are trying to post to
'''
global pending_message_data
if len(message) <= 0 or len(message) > 1000:
raise InputError(
description='Message must be between 1 and 1000 characters long.')
if time_to_send < datetime.utcnow():
raise InputError(description='The date to send must be in the future.')
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int) or \
not aux_common.user_in_channel(user['u_id'], channel_id):
raise AccessError(
description='User is not in the channel that message is being sent to')
message_dict = {
'temporary_message_id': len(pending_message_data),
'message': message,
'sending_u_id': user['u_id'],
'timestamp': time_to_send,
'channel_id': int(channel_id),
'reacting_u_ids': [],
'pinned': False
}
print(time_to_send, flush=True)
pending_message_data.append(message_dict)
return {'message_id': (len(message_data) - 1)}
def start(token, channel_id, length):
'''
Requirements: correct channel_id and token
This will start a standup session for 'length' seconds. Messages sent to this session must be
through 'send'.
A message sent will be appended to the final message using send.
At time = length, the message package will be sent over to message_data.
#Raises 2 possible InputErrors
'''
# preliminary checks
if common.ch_id_exists(channel_id) == -1:
raise InputError('Invalid Channel. Cannot start standup.')
if active(token, channel_id)['is_active']:
raise InputError(
'A standup is active. Only 1 standup may be running at a time.')
authorized_caller = common.decode_token(token)
if authorized_caller["u_id"] == {
"u_id": "error_invalid_token"
} or not common.user_in_channel(authorized_caller["u_id"], channel_id):
raise AccessError('You do not have permission to do this.')
# check if length is valid. Assuming that a standup lasts for at least 1 second.
if length < 1:
raise InputError(
description=
'You cannot start a standup for a time less than 1 second.')
# keep start and finish for better accuracy
time_start = datetime.datetime.utcnow()
time_finish = time_start + datetime.timedelta(seconds=length)
discrete.standup_data(time_start, time_finish, channel_id,
authorized_caller['u_id'])
index = discrete.find_standup(channel_id)
# at length = length seconds, sends all the messages from the queue as a complete package
Timer(length, discrete.send_standup, [token, channel_id, index]).start()
Timer(length + 1, data.standup_list.pop, [index]).start()
return {
'time_finish':
int(time_finish.replace(tzinfo=datetime.timezone.utc).timestamp())
}
def unpin(token, message_id):
'''
## DESCRIPTION ##
Given a token and message_id, changes the 'pinned' attribute of the corresponding 'message_id'
dictinoary to False.
## TYPES ##
token - string
message_id - integer
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- message_id is invalid
- the user is not an owner
- message is not pinned
AccessError if
- The user is not a member of the channel that the message is within
- Token is invalid
'''
global message_data
message_index = aux_discrete.find_message(message_id)
if message_index == -1:
raise InputError(description='Message ID is invalid.')
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int):
raise AccessError(description="Invalid token")
if not aux_common.user_in_channel(user['u_id'], message_data[message_index]['channel_id']):
raise InputError(
description="User is not in the channel that the message to unpin to is in.")
if not message_data[message_index]['pinned']:
raise InputError(description="Message not yet pinned")
if not aux_common.user_is_owner_of_slackr(user['u_id']) and not \
aux_common.user_is_owner_channel(user['u_id'], message_data[message_index]['channel_id']):
raise InputError(
description="User is not owner of the slackr and not owner of the channel")
message_data[message_index]['pinned'] = False
return {}
def react(token, message_id, react_id):
'''
## DESCRIPTION ##
Given a token, message_id, and react_id, adds the 'token' user to the 'reacting_u_ids' list
of the corresponding 'message_id'.
## TYPES ##
token - string
message_id - integer
react_id - integer
## RETURN VALUE ##
{}
## EXCEPTIONS ##
InputError if
- react_id is not 1
- message_id is not a valid message within a channel the authorised user has joined
- User has already 'reacted' to this message.
AccessError if
- Token is invalid
'''
global message_data
message_index = aux_discrete.find_message(message_id)
if message_index == -1:
raise InputError(description='Message ID is invalid.')
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(user['u_id'], int):
raise AccessError(description="Invalid token")
if not aux_common.user_in_channel(user['u_id'], message_data[message_index]['channel_id']):
raise InputError(
description="User is not in the channel that the message to react to is in.")
if react_id != 1:
raise InputError(description="Invalid react ID")
if user['u_id'] in message_data[message_index]['reacting_u_ids']:
raise InputError(description="Message already reacted to")
message_data[message_index]['reacting_u_ids'].append(user['u_id'])
return {}
def search(token, query_str):
'''
## DESCRIPTION ##
Given a query string, return a collection of messages in all of the channels
that the user has joined that match the query. Results are sorted from most
recent message to least recent message.
## TYPES ##
token - string
query_str - string
## RETURN VALUE ##
{messages}
## EXCEPTIONS ##
N/A
'''
message_list = []
user_id = aux_common.decode_token(token)
if user_id == {'u_id': "error_invalid_token"}:
raise AccessError(description="Invalid Token")
for message in message_data:
if aux_common.user_in_channel(user_id['u_id'], message['channel_id']):
if query_str in message['message']:
message_dict = {
"message_id": message['message_id'],
"u_id": message['sending_u_id'],
"message": message['message'],
"time_created": message['timestamp'].replace(tzinfo=datetime.timezone.utc).\
timestamp(),
"reacts": [{'react_id': 1,
'u_ids': message['reacting_u_ids'],
'is_this_user_reacted': \
bool(user_id['u_id'] in message['reacting_u_ids'])}],
"is_pinned": message['pinned'],
}
message_list.append(message_dict)
#print(f"returning {'messages': message_dict}", flush=True)
return{'messages': message_list}
def create(token, name, is_public):
'''
## DESCRIPTION ##
Given a token, name, and is_public boolean, creates a new channel with the properties passed.
## TYPES ##
token - string
name - string
is_public - boolean
## RETURN VALUE ##
{ channel_id }
## EXCEPTIONS ##
AccessError if:
- Token is invalid
InputError if:
- The name is < 1 or > 20 characters long
'''
global all_channels, next_id
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(
user['u_id'], int):
raise AccessError(description="Invalid token")
if len(name) < 1 or len(name) > 20:
raise InputError(
description="Name of channel must be 1 to 20 characters long.")
next_ch_id = next_id.get('channel_id')
if not next_ch_id: # key does not exist yet
next_id['channel_id'] = 0
next_ch_id = 0
next_id['channel_id'] += 1
new_channel_dict = {
"name": name,
"channel_id": next_ch_id,
"owner_members": [user['u_id']],
"all_members": [user['u_id']],
"is_public": is_public
}
all_channels.append(new_channel_dict)
return {'channel_id': next_ch_id}
def setname(token, first_name, last_name):
"""
INPUTS:token, name_first,name_last
RETURNS: {}
INPUTERROR:
* Name_first is not between 1 and 50 charactors inclusive in length
* Name_last is not between 1 and 50 characters inclusive in length
DESCRIPTION: Updates the authorised user's first and last name
"""
global user_data
# Raise errors first
if len(first_name) >= 50 or len(first_name) <= 1:
raise InputError(
description='Length of first name must be between 1 - 50 characters'
)
if len(last_name) >= 50 or len(last_name) <= 1:
raise InputError(
description='Length of last name must be between 1 - 50 characters'
)
# decode token to get user_id, assuming u_id is the identifier for the user_data
if aux_common.decode_token(token) == {'u_id': 'error_invalid_token'}:
raise AccessError(description="Invalid token")
# Reveals dictionary of form {"u_id": u_id}
user_id = aux_common.decode_token(token)
# remember user_id is a dictionary of 'u_id'
# Go into that users dictionary and change the first_name and last_name to inputs
for user in user_data:
if user['u_id'] == user_id['u_id']:
user['first_name'] = first_name
user['last_name'] = last_name
return {}
def send(token, channel_id, message):
'''
Requirements: correct token, channel_id and len(message) <= 1000
Appends a message to the standup_messages list. It will depend on an aux_ function buffering it
first before appending at the end of the list.
#Raises 3 Possible InputErrors, 1 Access Error
'''
# ch_id is invalid -> InputError
index = common.ch_id_exists(channel_id)
if index == -1:
raise InputError('Channel does not exist.')
# message > 1000 characters
if len(message) > 1000 or len(message) == 0:
raise InputError(
description=
f'Your message is {len(message)-1000} over the limit. Your message cannot be over 1000 \
characters')
# user is not authorized -> AccessError
authorized_caller = common.decode_token(token)
if authorized_caller == {"u_id": "error_invalid_token"} or \
not common.user_in_channel(authorized_caller["u_id"], channel_id):
raise AccessError(
'You cannot send a standup message in this channel which you are not part of.'
)
# active standup false -> InputError
if not active(token, channel_id)['is_active']:
raise InputError('Standup not active.')
index = discrete.find_standup(channel_id)
u_index = discrete.find_user(authorized_caller['u_id'])
data.standup_list[index][
'message'] += f"\n{data.user_data[u_index]['handle']}: {message}"
print(f"message now {data.standup_list[index]['message']}", flush=True)
return {}
def all_(token):
"""
Returns a list of all users and their associated details
"""
# Loop through all users, and append to new dictionary and return that dictionary
users_dictionary = {'users': []}
if aux_common.decode_token(token) == {'u_id': 'error_invalid_token'}:
raise AccessError(description="Invalid token")
for user in user_data:
user_dict = {
'u_id': user['u_id'],
'email': user['email'],
'name_first': user['first_name'],
'name_last': user['last_name'],
'handle_str': user['handle'],
'profile_img_url': user['profile_img_url']
}
# Appends dictionaries to the list
users_dictionary['users'].append(user_dict)
return users_dictionary
def listall(token):
'''
## DESCRIPTION ##
Given a token, returns all channels (except private ones)
## TYPES ##
token - string
## RETURN VALUE ##
{'channels': [
{
'channel_id': <integer>,
'name': string
},
...
]}
## EXCEPTIONS ##
AccessError if:
- Token is invalid
'''
global all_channels
user = aux_common.decode_token(token)
if user['u_id'] == 'error_invalid_token' or not isinstance(
user['u_id'], int):
raise AccessError(description="Invalid token")
channels_dict = {'channels': []}
for channel in all_channels:
if channel['is_public']:
channels_dict['channels'].append({
'channel_id':
channel['channel_id'],
'name':
channel['name']
})
return channels_dict
def upload_photo(token, img_url, x_start, y_start, x_end, y_end):
'''
INPUTS: token (str), img_url (str), x_start, y_start, x_end, y_end (ints)
RETURNS: {}
AUTHERROR: invalid token
INPUTERROR:
Image URL request raises status code not 200
x_start, y_start, x_end, y_end are not in the dimensions of the image at the URL or are invalid
Image URL is not linked to a valid image
Image URL is not a JPEG/JPG file.
DESCRIPTION: Updates an AUTHORISED user's handle
'''
global user_data, next_id
try:
x_start = int(x_start)
y_start = int(y_start)
x_end = int(x_end)
y_end = int(y_end)
except ValueError:
raise InputError(description="x & y values must be integers")
u_id = aux_common.decode_token(token)['u_id']
if u_id == "error_invalid_token":
raise AccessError(description="Invalid token")
response = requests.get(img_url)
if response.status_code != 200:
raise InputError(
description=f"Image URL invalid: status code {response.status_code}"
)
try:
img = Image.open(BytesIO(response.content))
except UnidentifiedImageError:
raise InputError(
description="That URL is not a direct link to an image")
if img.format != "JPEG":
raise InputError(description="Image must be a JPEG/JPG")
width, height = img.size
if x_start > width or x_end > width or y_start > height or y_end > height:
raise InputError(
description=
"One or more crop parameters were out of the photo's range.")
try:
img = img.crop((x_start, y_start, x_end, y_end))
except SystemError:
raise InputError(
description=
"Crop parameters were invalid. Are the ends greater than the starts?"
)
next_img_name = next_id.get('image_name')
if not next_img_name: # key does not exist yet
next_id['image_name'] = 0
next_img_name = 0
try:
img.save(f"./profile_images/{next_img_name}.jpg", "JPEG")
except SystemError:
raise InputError(
description=
"Error occurred while saving the image. Are the ends greater than the starts?"
)
u_index = aux_discrete.find_user(u_id)
user_data[u_index][
'profile_img_url'] = f"http://127.0.0.1:8080/profileimages/{next_img_name}.jpg"
next_id['image_name'] += 1
return {}
def guess(token, channel_id, X):
'''
Input - valid token, channel ID and a guess X.
Behavior:
Given a message with some 2nd string 'X', determines
whether the guess is correct or not.
Output - {}
'''
# ch_id is invalid -> InputError
index = common.ch_id_exists(channel_id)
if index == -1:
raise InputError(
description='The channel you are guessing on does not exist.')
# check if token is valid
authorized_caller = common.decode_token(token)
if authorized_caller == {"u_id": "error_invalid_token"} or \
not common.user_in_channel(authorized_caller["u_id"], channel_id):
raise AccessError(
description='You do not have permission to do this.')
# ensure channel has a hangman session
# NOTE YOU must abstract these functions ASAP.
index = None
for session in hangman_sessions:
if session["channel_id"] == channel_id:
index = hangman_sessions.index(session)
if index == None:
raise InputError(description='A hangman session is not running right now')
X = X[0].split(' ')
# if word not specified (is list), generate a random word
if len(X) != 1:
X = X[1]
# check if X has been guessed already
if X in hangman_sessions[index]['guesses']:
raise InputError(description='Your guess has already been guessed.')
# catch empty input error
if not isinstance(X, str):
raise InputError(description='Usage: /guess [letter]')
# SEND THE /guess X as a message to message data.
message.send(token, channel_id, '/guess ' + X)
# check if the guess results in the complete answer
hm_word = hangman_sessions[index]['word']
guesses = hangman_sessions[index]['guesses']
guesses.append(X)
prev_word = hangman_sessions[index]['decrement_word']
hangman_sessions[index]['decrement_word'] = hangman_sessions[index]['decrement_word'].replace(X, '')
word_decrement = hangman_sessions[index]['decrement_word']
if prev_word == word_decrement:
hangman_sessions[index]["bad_attempts"] += 1
# render ASCII or some image art.
bot_message = _render_ascii(
hangman_sessions[index]["bad_attempts"], channel_id, guesses, hm_word)
if hm_word.replace(X, '') == hm_word:
hangman_sessions[index]['remaining_guesses'] -= 1
# if guess results in complete answer, then done and send congratulations
if word_decrement == '':
hangman_sessions.pop(index)
bot_message += "\n＼(＾O＾)／\nYou've correctly guessed the word!"
# decrement the amount of guesses available, and if no more guesses,
# remove hangman session and send taunting message
else:
if hangman_sessions[index]['remaining_guesses'] == 0:
hangman_sessions.pop(index)
bot_message += f"\n(✖╭╮✖)\nThe word is {hm_word}, you have lost\nF to pay respects"
else:
bot_message += "\nLetters guessed:"
for word in hangman_sessions[index]['guesses']:
bot_message += f" {word}"
# send message as the bot
bot_send(bot_message, channel_id)
return {}
def start(token, channel_id, word):
'''
Input - valid token, channel_id and word.
Word validity is handled in the frontend.
Behavior:
Starts a hangman session in a channel.
Takes a word from the random_word mod, and parses
it so that it only contains alphabetical characters.
All hangman sessions are stored in a hangman data structure.
Output - {}
'''
# ch_id is invalid -> InputError
index = common.ch_id_exists(channel_id)
if index == -1:
raise InputError(
description='The channel you are attempting to start a hangman in does not exist.')
# check if token is valid
authorized_caller = common.decode_token(token)
if authorized_caller == {"u_id": "error_invalid_token"} or \
not common.user_in_channel(authorized_caller["u_id"], channel_id):
raise AccessError(
description='You do not have permission to start hangman.')
# check if a hangman session is ongoing
for session in hangman_sessions:
if session["channel_id"] == channel_id:
raise InputError(
description='A hangman session is already ongoing in this channel')
final_word = word[0].split(' ')
# if word not specified (is list), generate a random word
if len(final_word) == 1:
_site = "http://svnweb.freebsd.org/csrg/share/dict/words?view=co&content-type=text/plain"
response = requests.get(_site)
_words = response.content.splitlines()
final_word = random.choice(_words).decode()
else:
final_word = final_word[1].strip()
# add to hangman sessions
hangman_sessions.append({
"channel_id": channel_id,
"word": final_word.lower(),
"decrement_word": final_word.lower(),
"guesses": [],
"remaining_guesses": 8,
"bad_attempts": 0
})
# send message as the bot
idX = discrete.find_user(authorized_caller["u_id"])
starter_name = user_data[idX]["first_name"]
bot_message = f"{starter_name} has just started a hangman!"
bot_message += _missing([], final_word)
bot_send(bot_message, channel_id)
return {}