import dataclasses
import datetime
import logging
import re
import json
import secrets
from decimal import Decimal

import bs4

import personal_data.html_util
import personal_data.parse_util
from personal_data.data import DeduplicateMode, Scraper
from .. import secrets

logger = logging.getLogger(__name__)


# mainnet: https://reader.partisiablockchain.com
# testnet: https://node1.testnet.partisiablockchain.com


HOSTNAME = 'reader.partisiablockchain.com'

URL_ACCOUNT_PLUGIN = 'https://{hostname}/{shard}blockchain/accountPlugin/local'
URL_ACCOUNT_PLUGIN_GLOBAL = 'https://{hostname}/{shard}blockchain/accountPlugin/global'

def shard_id_for_address(address: str) -> str:
    return 'shards/Shard2/' # TODO

@dataclasses.dataclass(frozen=True)
class MpcBalance(Scraper):
    dataset_name = 'defi_mpc_balance'
    deduplicate_mode = DeduplicateMode.ONLY_LATEST
    deduplicate_ignore_columns = ['account.update_time']

    def get_json(self, url: str, data: dict) -> tuple[dict,str]:
        headers = {
                'Content-Type': 'application/json',
                'Accept': 'application/json',
        }

        response = self.session.post(url, headers = headers, data=json.dumps(data))
        response.raise_for_status()
        date = response.headers.get('last-modified') or response.headers.get('date')
        json_data = response.json()
        if json_data is None:
            msg = 'No result data for ' + url
            raise Exception(msg)
        return json_data, date

    def determine_coins(self) -> list[dict]:
        data: dict = {'path':[]}

        url = URL_ACCOUNT_PLUGIN_GLOBAL.format(
                hostname = HOSTNAME,
                shard = '',
        )

        json_data, date = self.get_json(url, data=data)
        return json_data['coins']['coins']

    def scrape(self):
        address = secrets.PBC_ACCOUNT_ADDRESS
        coins = self.determine_coins()

        headers = {
                'Content-Type': 'application/json',
                'Accept': 'application/json',
        }

        url = URL_ACCOUNT_PLUGIN.format(
                hostname = HOSTNAME,
                shard = shard_id_for_address(address),
        )

        data: dict = {'path':[{'type':'field','name':'accounts'},{'type':'avl','keyType':'BLOCKCHAIN_ADDRESS','key':address}]}
        account_data, date = self.get_json(url, data=data)

        data_point = {
            'account.address': address,
            'account.update_time': date,
        }

        data_point['balance.MPC'] = str(Decimal(account_data['mpcTokens'])/1000)

        for coin_idx, amount_data in enumerate(account_data['accountCoins']):
            coin_data  = coins[coin_idx]
            byoc_balance = Decimal(amount_data ['balance'])
            denominator = Decimal(coin_data['conversionRate']['denominator'])
            native_balance = byoc_balance / denominator
            data_point['balance.'+coin_data['symbol']] = str(native_balance)
            del coin_idx, coin_data

        yield data_point