class-join.py

#!/usr/bin/env python3

import json
import os
import sys
try:
    import datetime
except:
    consent = input(
        "This program requires datetime module. Should we install it for you? (y/n)")
    if consent == 'y' or consent == '':
        os.system('python3 -m pip install datetime')
        print('datetime module installed.')
        print("Please re-open the terminal and/or run this program again.")
        input('Press enter to exit.')
        quit()
    else:
        print('You have declined to install the module.')
        input('Press enter to exit.')
        quit()


def load_json(path):
    with open(path, 'r') as f:
        return json.load(f)


def get_weekday():
    return datetime.date.today().strftime('%A')


def get_time():
    return int(datetime.datetime.now().strftime('%H%M'))


def select_class(jsonobj):
    weekday = get_weekday()
    time = int(get_time())
    if weekday in jsonobj:
        if time >= 1000 and time < 1015:
            class_rn = jsonobj['form_class'][0]
        elif time >= 1015 and time < 1105:
            class_rn = jsonobj[weekday][0]
        elif time >= 1105 and time < 1200:
            class_rn = jsonobj[weekday][1]
        else:
            print('There is no class at this time.')
            input('Press enter to exit.')
            sys.exit()
    else:
        print('There is no class at this time.')
        input('Press enter to exit.')
        sys.exit()
    return class_rn


def parse_class(class_rn):
    class_period = class_rn['period']
    class_teacher = class_rn['teacher']
    class_link = class_rn['link']
    return class_period, class_teacher, class_link


def class_msg(class_period, class_teacher, class_link):
    if class_period == '':
        print('You are joining the form class.')
        print('Form teacher is: ' + class_teacher)
        print("The link we're going to use is: " + class_link)
        consent = input('Do you consent to join the class? (y/n) ')
        if consent == 'y' or consent == '':
            class_open(class_link)
        else:
            print('You have declined to join the class.')
            input('Press enter to exit.')
            quit()
    else:
        print('You are joining class no ' + class_period + '.')
        print('Teacher is: ' + class_teacher)
        print("The link we're going to use is: " + class_link)
        consent = input('Do you consent to join the class? (y/n) ')
        if consent == 'y' or consent == '':
            class_open(class_link)
        else:
            print('You have declined to join the class.')
            input('Press enter to exit.')
            quit()


def class_open(class_link):
    if sys.platform == 'win32':
        os.system('start "" "' + class_link + '"')
    elif sys.platform == 'linux':
        os.system('xdg-open ' + class_link)
    elif sys.platform == 'darwin':
        os.system('open ' + class_link)


def main():
    jsonobj = load_json('class-routine.json')
    class_rn = select_class(jsonobj)
    class_period, class_teacher, class_link = parse_class(class_rn)
    class_msg(class_period, class_teacher, class_link)


if __name__ == '__main__':
    main()