import json
import os
client = discord.Client()

@client.event
async def on_ready():
    print("Ready for startings!")

@client.event
async def on_message(message):
    if message.author == client.user:
        return
    if message.content == "!hello":
      await message.channel.send ("World")
    if message.content == "!test":
        await message.channel.send("a test lol")

@client.event
async def on_member_join(member):
  with open("users.json", "r") as f:
    users = json.load(f)

  await update_data(users, member)

  with open("users.json", "w") as f:
    json.dump(users, f)

@client.event
async def on_message(message):
  with open("users.json", "r") as f:
    users = json.load(f)

  await update_data(users, message.author)
  await add_experience(users, message.author, 5)
  await level_up(users, message.author, message.channel)
  with open("users.json", "w") as f:
    json.dump(users, f)

async def update_data(users, user):
  if not user.id in users:
    users[user.id] = {}
    users[user.id]["experience"] = 0
    users[user.id]["level"] = 0

async def add_experience(users, user, exp):
  users[user.id]["experience"] += exp

async def level_up(users, user, channel):
  experience = users[user.id]["experience"]
  lvl_start = users[user.id]["level"]
  lvs_end = int(experience ** (1/4))

if lvl_start < lvl_end:
  await client.send_message(channel, "{} has leveled up to level {}".format (user.mention, lvl_end))
  users[user.id]["level"] = lvl_end
  client.run("MY DISCORD TOKEN IS HERE BUT I DON'T WANT TO GIVE THAT TO YOU")