# standard imports
import json
import logging
from os import path
from urllib.parse import parse_qsl, urlparse

from cic_eth.server.celery_helper import call
from cic_eth.server.UWSGIOpenAPIRequest import UWSGIOpenAPIRequest
from openapi_core import create_spec
from openapi_core.validation.request.datatypes import OpenAPIRequest
from openapi_core.validation.request.validators import RequestValidator
from openapi_spec_validator.schemas import read_yaml_file

spec_dict = read_yaml_file(path.join(path.dirname(
    __file__), '../../server/openapi/server.yaml'))
spec = create_spec(spec_dict)


logging.basicConfig(level=logging.WARNING)
log = logging.getLogger()


# uwsgi application


def application(env, start_response):
    oAPIRequest = UWSGIOpenAPIRequest(env)
    validator = RequestValidator(spec)
    result = validator.validate(oAPIRequest)

    # raise errors if request invalid
    # result.raise_for_errors()
    if result.errors:
        # get list of errors
        json_data = json.dumps(list(map(lambda e: str(e), result.errors)))
        content = json_data.encode('utf-8')
        headers = []
        headers.append(('Content-Length', str(len(content))),)
        headers.append(('Access-Control-Allow-Origin', '*',))
        headers.append(('Content-Type', 'application/json',))
        start_response('400 Invalid Request', headers)
        return [content]
    parsed_url = urlparse(env.get('REQUEST_URI'))  # /api
    path = parsed_url.path
    params = dict(parse_qsl(parsed_url.query))

    # Setup Channel to receive the result

    if path == '/list':
        address = params.pop('address')
        print('address', address, )
        # address, limit=10
        data = call('list', address, **params)

    elif path == '/balance':
        address = params.pop('address')
        token_symbol = params.pop('token_symbol')
        data = call('balance', address, token_symbol, **params)
        for b in data:
            b.update({
                "balance_available": int(b['balance_network']) + int(b['balance_incoming']) - int(b['balance_outgoing'])
            })
    elif path == '/create_account':
        data = call('create_account', **params)

    elif path == '/refill_gas':
        address = params.pop('address')
        data = call('refill_gas', address)

    elif path == '/ping':
        data = call('ping', **params)

    elif path == '/transfer':
        from_address = params.pop('from_address')
        to_address = params.pop('to_address')
        value = params.pop('value')
        token_symbol = params.pop('token_symbol')

        data = call('transfer', from_address, to_address, value, token_symbol)

    elif path == '/transfer_from':
        from_address = params.pop('from_address')
        to_address = params.pop('to_address')
        value = params.pop('value')
        token_symbol = params.pop('token_symbol')
        spender_address = params.pop('spender_address')
        data = call('transfer_from', from_address, to_address,
                    value, token_symbol, spender_address)

    elif path == '/token':
        token_symbol = params.pop('token_symbol')
        data = call('token', token_symbol, **params)

    elif path == '/tokens':
        token_symbols = params.pop('token_symbols')
        data = call('tokens', token_symbols, **params)

    elif path == '/default_token':
        data = call('default_token', )

    json_data = json.dumps(data)
    content = json_data.encode('utf-8')
    headers = []
    headers.append(('Content-Length', str(len(content))),)
    headers.append(('Access-Control-Allow-Origin', '*',))
    headers.append(('Content-Type', 'application/json',))
    start_response('200 OK', headers)

    return [content]