#!/usr/bin/python3
import json
import sys
from datetime import datetime
import matplotlib.pyplot as plt
from outils import import_array, btz_core

def create_hist(messages):
    # Initialize the dict in which we'll store the 
    # number of messages for each hour of the day
    hist = {}
    for hour in range(0, 24):
      hist[hour]=0

    for message in messages:
      if "date_unixtime" in message :
        message_hour = datetime.fromtimestamp(int(message["date_unixtime"])).hour
        hist[message_hour] += 1
    
    return hist

def main():
  # Get the file name from the first command line argument
  filename = sys.argv[1]

  # Import the array from the JSON file
  messages = import_array(filename)
  
  # create a dict containing the number of messages for each hour
  hist = create_hist(messages)
  
  # sort and print the resulting wins dict
  print(sorted(hist.items(), key=lambda x:x[1], reverse=True))

  hours = list(hist.keys())
  counts = list(hist.values())

  fig = plt.figure(figsize = (10, 5))

  plt.xlabel("Messages par heure")
  plt.ylabel("Nb de messages")
  plt.title("Heure de la journée")

  # creating the bar plot
  plt.bar(hours, counts,width = 0.4)
  #plt.show()
  plt.savefig("msg-heures.png")

if __name__ == '__main__':
  main()