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import network
import urllib.urequest
import json
import gc
import utime

slack_api = "https://slack.com/api/"
slack_token = "xoxp-000000000000-000000000000-000000000000-00000000000000000000000000000000"

#get all channels, groups and direct messages
def conversations_list():
  url = slack_api + "conversations.list?token=" + slack_token + "&types=public_channel,private_channel,mpim,im"
  f = urllib.urequest.urlopen(url)
  j = json.loads(f.read())
  f.close()
  del url
  del f
  return j

#get direct messages history  from slack, needed for "unread_count_display"
def im_history(id):
  url = slack_api + "im.history?token=" + slack_token + "&channel=" + id + "&count=1&unreads=1"  
  f = urllib.urequest.urlopen(url)
  j = json.loads(f.read())
  f.close()
  del url
  del f
  return j

#get direct channels info from slack, needed for "unread_count_display"
def channels_info(id):
  url = slack_api + "channels.info?token=" + slack_token + "&channel=" + id  
  f = urllib.urequest.urlopen(url)
  j = json.loads(f.read())
  f.close()
  del url
  del f
  return j

#get direct groups info from slack, needed for "unread_count_display"
def groups_info(id):
  url = slack_api + "groups.info?token=" + slack_token + "&channel=" + id  
  f = urllib.urequest.urlopen(url)
  j = json.loads(f.read())
  f.close()
  del url
  del f
  return j

#connect to WiFi
sta_if = network.WLAN(network.STA_IF)
ap_if = network.WLAN(network.AP_IF)

sta_if.active(True)
ap_if.active(False)

sta_if.connect('SSID', '*****')


oldState = False
while True:  
  convList = conversations_list()["channels"]
  state = False
  
  #loop that iterates conversations (channels/groups/direct messages) and checks for unread messages
  for conv in convList:
  
    #"is_channel" and "is_group" aren't present in direct message record, so we need to test this first.
    if conv["is_im"] == True:
      info = im_history(conv["id"])        
      if info["unread_count_display"] > 0:
        state = True
        del info
        break
      del info
      continue

    if conv["is_channel"] == True and conv["is_member"] == True:
      info = channels_info(conv["id"])["channel"]      
      if info["is_member"] == True and info["unread_count_display"] > 0:
        state = True
        del info
        break
      del info

    if conv["is_group"] == True:
      info = groups_info(conv["id"])["group"]
      if info["unread_count_display"] > 0:
        state = True
        del info
        break
      del info

  del convList

#check if state changed 
  if state != oldState:
    print("state changed")
    oldState = state  
  
  gc.collect()