def process_request(query, channel):
"""
Each user query is forwarded to the appropriate function based on the command in the query.
Once the query has been processed, the resulting response is sent as a message to the channel.
If no commands are found, the default is to fetch the last price for the ticker.
"""
# components - each query split into a list of words and symbols
components = query.split(' ')
if '' in components:
components.remove('')
ticker = components[0]
if len(components)>1:
command = list(set(COMMANDS).intersection(components[1:]))
if not command:
message = Response.unknown_command(ticker)
return slack_client.api_call("chat.postMessage", channel=channel, text=message, as_user=True)
components = components[2:]
output = OPERATIONS[command[0]](ticker, components)
message = output["message"]
if output.get("attachments"):
attachments = output['attachments']
return slack_client.api_call("chat.postMessage", channel=channel, text=message, attachments=attachments, as_user=True)
return slack_client.api_call("chat.postMessage", channel=channel, text=message, as_user=True)
message = OPERATIONS["last_price"](ticker)
return slack_client.api_call("chat.postMessage", channel=channel, text=message, as_user=True)
