from discord.ext import commands
import asyncio
import random

bot = commands.Bot(command_prefix="!")

class sf_user:
    def __init__(self, id, username, dmchannel):
        self.id = id
        self.name = username
        self.channel = dmchannel
        self.question = 0
        self.category = 0
        self.semester = 0
        
async def initialize():
    await bot.login("Nzg1MTkxODM3OTg3MzczMDg2.X80Q4g.bK_vMhhESanMOA78KxHfmJft2vk")
    
    userfile = open("users.txt", encoding="UTF-8")
    userlines = userfile.readlines()
    for i in userlines:
        userdata = i.split("|")
        add_user = await bot.fetch_user(userdata[1])
        users.append(sf_user(int(userdata[0]), add_user, await add_user.create_dm()))
    userfile.close()
    
    await bot.connect()


@bot.event
async def on_ready():
    print("we logged in as {0.user.name}".format(bot))
    return
	
@bot.command()
async def start(ctx):
    print("hello")
    for i in users:
        if i.name == ctx.author:
            await ctx.send("User already in database")
            return
    users.append(sf_user(len(users), ctx.author.id, await ctx.author.create_dm()))
    await users[-1].channel.send("Hello")
    
    userfile = open("users.txt", "a")
    userfile.write(f"{users[-1].id}|{users[-1].name}|{users[-1].channel}\n")
    userfile.close()
    
    return
	
    
@bot.command()
async def question(ctx):
    current_user = 0
    for i in users:
        if i.channel == ctx.channel:
            current_user = i
    
    if current_user == 0:
        await ctx.send("User not in database")
        return
    
    q_id = random.randint(0, 10)
    question_str = get_question(q_id)[0]
    users[current_user.id].question = q_id
    await current_user.channel.send(question_str)
    return

def get_question(q_id):
    all_lines = []
    f = open("fragen_antworten.txt", encoding="UTF-8")
    lines = f.readlines()
    for line in lines:
        all_lines.append(line.split("|"))
    return all_lines[q_id][0], all_lines[q_id][1] #[q_id][0] is the question,  [q_id][1] is the answer


@bot.command()
async def debug(ctx):
    for i in users:
        await ctx.send(f"Question:{i.question}, Name:{i.name}, Channel:{i.channel}")
    return


@bot.command()
async def answer(ctx):
    current_user = 0
    for i in users:
        if i.channel == ctx.channel:
            current_user = i
    
    if current_user == 0:
        await ctx.send("User not in database")
        return
        
    answer = get_question(current_user.question)[1] # TO DO: return answer
    await current_user.channel.send(answer)
    return

#initialization

users = []

loop = asyncio.get_event_loop()
loop.run_until_complete(initialize())
loop.close()