"""
Contains all handlers for valid routes for the server
"""

# standard imports
import logging
from typing import Any, Callable, Dict, List, Type, Union

from cic_eth.server import cache, celery, converters, uwsgi
from cic_eth.server.openapi.UWSGIOpenAPIRequest import UWSGIOpenAPIRequest

log = logging.getLogger(__name__)


def handle_transactions(start_response, query: dict) -> List[bytes]:
    address = query.pop('address')
    data = celery.call('list', address, **query)
    return uwsgi.respond(start_response, data)


def handle_balance(start_response, query: dict) -> List[bytes]:
    address = query.pop('address')
    token_symbol = query.pop('token_symbol')
    log.info(f"token_symbol: {token_symbol}")
    log.info(f"query: {query}")
    data = celery.call('balance', address, token_symbol,
                       **query)
    for b in data:
        token_data = get_token_data(token_symbol)
        b['balance_network'] = converters.from_wei(token_data.get(
            'decimals'), int(b['balance_network']))
        b['balance_incoming'] = converters.from_wei(token_data.get(
            'decimals'), int(b['balance_incoming']))
        b['balance_outgoing'] = converters.from_wei(token_data.get(
            'decimals'), int(b['balance_outgoing']))

        b.update({
            "balance_available": int(b['balance_network']) + int(b['balance_incoming']) - int(b['balance_outgoing'])
        })
    return uwsgi.respond(start_response, data)


def handle_create_account(start_response, query: dict) -> List[bytes]:
    data = celery.call('create_account', **query)
    return uwsgi.respond(start_response, data)


def handle_refill_gas(start_response, query: dict) -> List[bytes]:
    address = query.pop('address')
    data = celery.call('refill_gas', address)
    return uwsgi.respond(start_response, data)


def handle_ping(start_response, query: dict) -> List[bytes]:
    data = celery.call('ping', **query)
    return uwsgi.respond(start_response, data)


def handle_transfer(start_response, query: dict) -> List[bytes]:
    from_address = query.pop('from_address')
    to_address = query.pop('to_address')
    value = query.pop('value')
    token_symbol = query.pop('token_symbol')
    wei_value = converters.to_wei(get_token_data(
        token_symbol).get('decimals'), int(value))
    data = celery.call('transfer', from_address,
                       to_address, wei_value, token_symbol)
    return uwsgi.respond(start_response, data)


def handle_transfer_from(start_response, query: dict) -> List[bytes]:
    from_address = query.pop('from_address')
    to_address = query.pop('to_address')
    value = query.pop('value')
    token_symbol = query.pop('token_symbol')
    spender_address = query.pop('spender_address')
    wei_value = converters.to_wei(get_token_data(
        token_symbol).get('decimals'), int(value))
    data = celery.call('transfer_from', from_address, to_address,
                       wei_value, token_symbol, spender_address)
    return uwsgi.respond(start_response, data)


def handle_token(start_response, query: dict) -> List[bytes]:
    token_symbol = query.pop('token_symbol')
    data = cache.get_token_data(token_symbol)
    if data == None:
        data = celery.call('token', token_symbol, **query)
        cache.set_token_data(token_symbol, data)
    return uwsgi.respond(start_response, data)


def handle_tokens(start_response, query: dict) -> List[bytes]:
    token_symbols = query.pop('token_symbols')
    data = celery.call('tokens', token_symbols, **query)
    return uwsgi.respond(start_response, data)


def handle_default_token(start_response, _query) -> List[bytes]:
    data = cache.get_default_token()
    if data == None:
        data = celery.call('default_token')
        cache.set_default_token(data)
        cache.set_token_data(data.get('token_symbol'), data)
    return uwsgi.respond(start_response, data)


def get_token_data(token_symbol: str) -> List[bytes]:
    data = cache.get_token_data(token_symbol)
    log.debug(f"cached token data: {data}")
    if data == None:
        data = celery.call('token', token_symbol)
        log.debug(
            f"No token data setting token data for: {token_symbol} to {data}")
        cache.set_token_data(token_symbol, data)
    # TODO What is the second item in the list
    return data[0]


routes: Dict[str, Callable[[Any, Union[None, dict]], List[bytes]]] = {
    "/transactions": handle_transactions,
    "/balance": handle_balance,
    "/create_account": handle_create_account,
    "/refill_gas": handle_refill_gas,
    "/ping": handle_ping,
    "/transfer": handle_transfer,
    "/transfer_from": handle_transfer_from,
    "/token": handle_token,
    "/tokens": handle_tokens,
    "/default_token": handle_default_token,
}