#!/bin/env /usr/bin/python3
#
# Copyright (C) 2023  Aravinth Manivannan <realaravinth@batsense.net>
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from asyncio import sleep
import json

from dcache import grpc_add_pow, grpc_get_pow, grpc_delete_pow

# 1. Check duplicate pow
# 2. Create pow
# 3. Read non-existent pow
# 4. Read pow
# 5. Read expired pow

def add_pow(captcha, pow):
    """Add pow to """
    try :
        res = grpc_add_pow(captcha, pow)
        return res
    except Exception as e:
        return e
    
def get_pow_from(captcha, pow):
    """Add pow to """
    try :
        res = grpc_get_pow(captcha, pow)
        if res.HasField('result'):
            return res.result
        else:
            return None
    except Exception as e:
        return e

def delete_pow(captcha, pow):
    """Add pow to """
    try :
        grpc_delete_pow(pow)
    except Exception as e:
        return e

async def add_pow_works():
    """Test: Add pow"""
    try:
        key = "add_pow"
        pow_name = "add_pow_pow"

        add_pow(key, pow_name)
        stored_pow = get_pow_from(key, pow_name)
        assert stored_pow.difficulty_factor == 500
        assert stored_pow.duration == 5
        print("[*] Add pow works")

    except Exception as e:
        raise e

async def pow_ttl_works():
    """Test: pow TTL"""
    try:
        key = "ttl_pow"
        pow_name = "ttl_pow_pow"

        add_pow(key, pow_name)
        await sleep(5 + 2)

        error = get_pow_from(key, pow_name)
        assert error is None

        print("[*] pow TTL works")
    except Exception as e:
        raise e


async def pow_doesnt_exist():
    """Test: Non-existent pow"""
    try:
        pow_name = "nonexistent_pow"
        key = "nonexistent_pow_key"

        error = get_pow_from(key, pow_name)
        assert error is None

        print("[*] pow Doesn't Exist works")
    except Exception as e:
        raise e


async def delete_pow_works():
    """Test: Delete pows"""
    try:
        pow_name = "delete_pow"
        key = "delete_pow_key"
        #pow = get_pow(pow_name)

        add_pow(key, pow_name)
        delete_pow(key, pow_name)
        error = get_pow_from(key, pow_name)
        assert error is None


        print("[*] Delete pow works")
    except Exception as e:
        raise e