# coding: utf8

# toutes les chaines sont en unicode (même les docstrings)
from __future__ import unicode_literals

# from pprint import pprint
from rocketchat_API.rocketchat import RocketChat
import json
import os
import random
from datetime import datetime, timedelta
from common.rocketchathelper import getAllChannels, getAllMessages, Connection
from common.savehelper import save
from common.charthelper import createElement, getColor, setTopicsInfo, getTopics

begin = datetime.now()
end = datetime.now()

def main():
  rocket = Connection()
  nbElements = 30

  global begin, end
  
  labels = [None] * nbElements
  messagesByChannel = []
  usersByChannel = []
  messagesByTopic = {}
  usersGlobal = []

  now = datetime.now()
  date = datetime(now.year, now.month, now.day, 0,0,0)

  info = {
    "updated": "{:02}/{:02}/{:04}".format(now.day, now.month, now.year),
    "labels": labels,
    "messagesByChannel": messagesByChannel,
    "usersByChannel": usersByChannel,
    "messagesByTopic": messagesByTopic,
    "usersGlobal": usersGlobal
  }

  uniqueUserGlobal = [None] * nbElements

  for channel in getAllChannels(rocket):
    dataMess = []
    dataUsers = []
    print( channel['name'] )
    begin = date - timedelta(nbElements)
    end = begin + timedelta(nbElements)

    topics = getTopics(channel)    
    print(topics)
    messages = getAllMessages(rocket, channel['_id'], begindate= begin, enddate= end, count= channel["msgs"])
    end = begin + timedelta(1)

    for id in range(0, nbElements):
      if uniqueUserGlobal[id] == None:
        uniqueUserGlobal[id] = []
      labels[id] = begin.strftime("%x")
      print("\t{0}".format(labels[id]))
      
      if messages is None:
        continue

      resultMess = list(filter(filter_message, messages))
      length = len(resultMess)
      dataMess.append(length)

      if length > 0:
        setTopicsInfo(topics, messagesByTopic, id, length)

        users = []
        for mess in resultMess:
          users.append(mess['u']['_id'])
          uniqueUserGlobal[id].append(mess['u']['_id'])
        usersDistinct = set(users)
        dataUsers.append(len(usersDistinct))
      else:
        dataUsers.append(0)

      begin = end
      end = begin + timedelta(1)
  
    color = getColor()
    messageByChannel = createElement(channel['name'], color,dataMess)
    userByChannel = createElement( channel['name'], color,dataUsers)

    messagesByChannel.append(messageByChannel)
    usersByChannel.append(userByChannel)

  for id in range(0, nbElements):
    uniqueUserGlobal[id] = len(set(uniqueUserGlobal[id]))

  userGlobal = createElement( 'global', 'red', uniqueUserGlobal)
  usersGlobal.append(userGlobal)

  save(info, "chat_stat_daily")

def filter_message(mess):
  if 't' in mess:
    return False

  date = datetime.strptime(mess["ts"], "%Y-%m-%dT%H:%M:%S.%fZ")

  if date < begin:
    return False
  
  if end < date:
    return False

  return True

if __name__ == "__main__":
    main()