"""Account system functionality."""

import os
import json
import requests
import string
import random

import embedder

from dotenv import load_dotenv

load_dotenv()

async def request_user_by_discord_id(discord_id):
    return requests.get(
        url=f'http://localhost:2333/users?discord_id={discord_id}',
        timeout=3,
        headers={
            'Content-Type': 'application/json',
            'Authorization': os.getenv('CORE_API_KEY')
        }
    )

async def get_account(interaction):
    try:
        user_response = await request_user_by_discord_id(interaction.user.id)

    except Exception as exc:
        await embedder.error(interaction, """Sorry, there was an error while checking if you have an account.
Please report this issue to the staff!""", ephemeral=True)
        raise exc

    if user_response.status_code == 404:
        await embedder.error(interaction, """You don't have an account yet!""", ephemeral=True)
        return

    return user_response.json()

async def get_info(interaction):
    account = await get_account(interaction)

    await embedder.info(interaction, f"""### Your account
This is all we have stored about your API account in our database.
Feel free to request a removal of your account by contacting the staff.

||```json
{json.dumps(account, indent=4)}
```||
(Click to reveal)

Learn more about how to use our API at **https://nova-oss.com**.
""", ephemeral=True)

async def get_credits(interaction):
    account = await get_account(interaction)
    if not account:
        return

    amount_credits = account["credits"]

    await embedder.info(interaction, f"""### Your credits
Amount: **{amount_credits if amount_credits < 1000000 else '∞'}**
""", ephemeral=True)

async def get_credits_of(interaction, user):
    if not interaction.user.guild_permissions.administrator:
        await embedder.error(interaction, """Sorry, you don't have the permission to do that.""", ephemeral=True)
        return

    try:
        userinfo = await request_user_by_discord_id(user.id)

    except Exception as exc:
        await embedder.error(interaction, """Sorry, there was an error while checking if you have an account.
Please report this issue to the staff!""", ephemeral=True)
        raise exc

    if userinfo.status_code == 404:
        await embedder.error(interaction, """You don't have an account yet!""", ephemeral=True)
        return

    account = userinfo.json()
    amount_credits = account["credits"]

    await embedder.info(interaction, f"""### Credits of {user.name}
Amount: **{amount_credits if amount_credits < 1000000 else '∞'}**
""", ephemeral=True)

async def set_credits(interaction, user, amount):
    if not interaction.user.guild_permissions.administrator:
        await embedder.error(interaction, """Sorry, you don't have the permission to do that.""", ephemeral=True)
        return

    try:
        account = await request_user_by_discord_id(user.id)

    except Exception as exc:
        await embedder.error(interaction, """Sorry, there was an error while checking if you have an account.
Please report this issue to the staff!""", ephemeral=True)
        raise exc
    
    if account.status_code == 404:
        await embedder.error(interaction, """You don't have an account yet!""", ephemeral=True)
        return

    try:
        account = account.json()

        requests.put(
            url=f'http://localhost:2333/users',
            timeout=3,
            headers={
                'Content-Type': 'application/json',
                'Authorization': os.getenv('CORE_API_KEY')
            },
            data=json.dumps({
                "discord_id": account["auth"]["discord"],
                "updates": {"$set": {"credits": amount}}
            })
        )
        
    except Exception as exc:
        await embedder.error(interaction, """Sorry, there was an error while setting your credits.
Please report this issue to the staff!""", ephemeral=True)
        raise exc
    
    await embedder.ok(interaction, f"""Successfully set the credits of {user.name} to **{amount}**.""", ephemeral=True)

async def reset_key(interaction):
    try:
        account = await get_account(interaction)

        if not account:
            await embedder.error(interaction, """It seems like you don't have an account yet.""", ephemeral=True)
        
        requests.put(
            url=f'http://localhost:2333/users',
            timeout=3,
            headers={
                'Content-Type': 'application/json',
                'Authorization': os.getenv('CORE_API_KEY')
            },
            data=json.dumps({
                "discord_id": account["auth"]["discord"],
                "updates": {"$set": {"api_key": await new_api_key()}}
            })
        )

        await embedder.ok(interaction, f"""Successfully reset your key!""", ephemeral=True)

    except Exception as exc:
        await embedder.error(interaction, """Sorry, there was an error while resetting your key.
Please report this issue to the staff!""", ephemeral=True)
        raise exc


async def new_api_key() -> str:
    chars = string.ascii_letters + string.digits

    infix = os.getenv('KEYGEN_INFIX')
    suffix = ''.join(random.choices(chars, k=20))
    prefix = ''.join(random.choices(chars, k=20))

    new_api_key = f'nv-{prefix}{infix}{suffix}'

    return new_api_key