#!/usr/bin/python3

import os
from datetime import datetime, timezone
import requests

schedule_start = datetime.fromisoformat("2021-11-12T10:00")

since_start = datetime.utcnow() - schedule_start

if since_start.days < 0:
    exit()

hour = since_start.days * 24 + since_start.seconds // 3600

filename = '/DB15-Volunteer-Schedule-raw.csv'

coming_online = []
going_offline = []

with open(filename, 'r') as schedule_file:
    for line in schedule_file:
        cells = line.split(",")
        if cells[hour] != cells[hour - 1]:
            if cells[hour] == "":
                going_offline.append((cells[0], cells[hour - 1]))
            else:
                coming_online.append((cells[0], cells[hour]))

print(coming_online)
print(going_offline)

message = f"**Shift changes for <time:{datetime.now(timezone.utc).isoformat(timespec='minutes')}>:**\n"
message += "\n---\n"
message += "Coming online:\n"
for (person, role) in coming_online:
    message += f"- *{person}* - {role}\n"
message += "\n---\n"
message += "Going offline:\n"
for (person, role) in going_offline:
    message += f"- *{person}* - {role}\n"

print(message)

bot_email = os.environ["BOT_EMAIL"]
api_key = os.environ["BOT_API_KEY"]

message_request = {
    "type": "stream",
    "to": "technical",
    "topic": "Schedule bot",
    "content": message,
}

r = requests.post('https://chat.videostrike.team/api/v1/messages',
                  data=message_request,
                  auth=(bot_email, api_key)
                  )
print(r.status_code)