"""Blockchain model"""
__docformat__ = "numpy"

import logging

import pandas as pd

from openbb_terminal.decorators import log_start_end
from openbb_terminal.helper_funcs import request

logger = logging.getLogger(__name__)


@log_start_end(log=logger)
def _make_request(endpoint: str) -> dict:
    """Helper method handles Blockchain API requests. [Source: https://api.blockchain.info/]

    Parameters
    ----------
    endpoint: str
        endpoint url

    Returns
    -------
    dict:
        dictionary with response data
    """

    url = f"https://api.blockchain.info/{endpoint}"
    response = request(
        url,
        headers={
            "Accept": "application/json",
            "User-Agent": "OBB",
            "Accept-Encoding": "gzip",
        },
    )
    if not 200 <= response.status_code < 300:
        raise Exception(f"blockchain.info api exception: {response.text}")
    try:
        return response.json()
    except Exception as e:
        logger.exception("Invalid Response: %s", str(e))
        raise ValueError(f"Invalid Response: {response.text}") from e


@log_start_end(log=logger)
def _blockchain_data_api_make_request(endpoint: str) -> dict:
    """Helper method handles Blockchain API requests. [Source: https://blockchain.info/]

    Parameters
    ----------
    endpoint: str
        endpoint url
    Returns
    -------
    dict:
        dictionary with response data
    """

    url = f"https://blockchain.info/{endpoint}"
    response = request(
        url,
        headers={
            "Accept": "application/json",
            "User-Agent": "OBB",
            "Accept-Encoding": "gzip",
        },
    )
    if not 200 <= response.status_code < 300:
        raise Exception(f"blockchain.info api exception: {response.text}")
    try:
        return response.json()
    except Exception as e:
        logger.exception("Invalid Response: %s", str(e))
        raise ValueError(f"Invalid Response: {response.text}") from e


@log_start_end(log=logger)
def get_btc_circulating_supply() -> pd.DataFrame:
    """Returns BTC circulating supply [Source: https://api.blockchain.info/]

    Returns
    -------
    pd.DataFrame
        BTC circulating supply
    """

    data = _make_request(
        "charts/total-bitcoins?timespan=all&sampled=true&metadata=false&cors=true&format=json"
    )["values"]
    df = pd.DataFrame(data)
    df["x"] = df["x"] * 1_000_000_000
    df["x"] = pd.to_datetime(df["x"])
    return df


@log_start_end(log=logger)
def get_btc_confirmed_transactions() -> pd.DataFrame:
    """Returns BTC confirmed transactions [Source: https://api.blockchain.info/]

    Returns
    -------
    pd.DataFrame
        BTC confirmed transactions
    """

    data = _make_request(
        "charts/n-transactions?timespan=all&sampled=true&metadata=false&cors=true&format=json"
    )["values"]
    df = pd.DataFrame(data)
    df["x"] = df["x"] * 1_000_000_000
    df["x"] = pd.to_datetime(df["x"])
    return df


@log_start_end(log=logger)
def get_btc_single_block(blockhash: str) -> pd.DataFrame:
    """Returns BTC block data in json format. [Source: https://blockchain.info/]
    Returns
    -------
    pd.DataFrame
        BTC single block
    """

    data = _blockchain_data_api_make_request(f"rawblock/{blockhash}?format=json")

    if data:
        df = pd.json_normalize(data)
        return df

    return pd.DataFrame()