Orderer/run_client.py

from __future__ import print_function
import sys
import time

import client_controller

from debug import debug


def fake_loading_bar(msg, duration=5.):
    if len(msg) >= 50:
        raise AssertionError('Loading bar label too large')
    msg += ': '
    print(msg, end='')
    sys.stdout.flush()
    bar_length = 78 - len(msg)
    for _ in range(bar_length):
        if not debug:
            time.sleep(duration / bar_length)
        print('#', end='')
        sys.stdout.flush()
    print('\n', end='')
    sys.stdout.flush()


def load():
    print('Loading...')

    fake_loading_bar('Initializing fake loading bars', duration=5)
    fake_loading_bar('Loading data from disk', duration=1)
    fake_loading_bar('Loading available commands', duration=3.5)
    fake_loading_bar('Updating indices', duration=2)
    fake_loading_bar('Waiting', duration=5)
    print('Done.\n\n')


def welcome():
    print('''
    $$$$$$\                  $$\                                         
    $$  __$$\                 $$ |                                        
    $$ /  $$ | $$$$$$\   $$$$$$$ | $$$$$$\   $$$$$$\   $$$$$$\   $$$$$$\  
    $$ |  $$ |$$  __$$\ $$  __$$ |$$  __$$\ $$  __$$\ $$  __$$\ $$  __$$\ 
    $$ |  $$ |$$ |  \__|$$ /  $$ |$$$$$$$$ |$$ |  \__|$$$$$$$$ |$$ |  \__|
    $$ |  $$ |$$ |      $$ |  $$ |$$   ____|$$ |      $$   ____|$$ |      
     $$$$$$  |$$ |      \$$$$$$$ |\$$$$$$$\ $$ |      \$$$$$$$\ $$ |      
     \______/ \__|       \_______| \_______|\__|       \_______|\__|      
                                                                      
                                                                      
                                                                      
To display an overview of available commands type \'help\'.

''')


allowed_commands = ['help',
                    'login',
                    'register',
                    'change_password',
                    'depot',
                    'orders',
                    'news',
                    'activate_key',
                    'buy',
                    'sell',
                    'transactions',
                    'orders_on',
                    'cancel_order',
                    'leaderboard',
                    'exit']


def one_command():
    cmd = input('*> ').strip()
    cmds = cmd.split(';')
    for cmd in cmds:
        cmd = cmd.split()
        # cmd = [cmd.strip() for cmd in cmd]
        # noinspection PySimplifyBooleanCheck
        if cmd == []:
            continue
        if cmd[0] not in allowed_commands:
            print('Invalid command:', cmd[0])
        else:
            method_to_call = getattr(client_controller, cmd[0])
            # noinspection PyBroadException
            try:
                method_to_call(*cmd[1:])
            except TypeError:
                print('Invalid command syntax.')
            except Exception:
                print('An error occurred while executing a command.')


def exit_client():
    global exiting
    exiting = True


if __name__ == '__main__':
    load()
    welcome()
    while not client_controller.exiting:
        one_command()