# This code is part of Qiskit.
#
# (C) Copyright IBM 2021.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.

"""Estimator result decoder."""

from typing import Dict
import numpy as np

from qiskit.primitives import EstimatorResult

from ..program.result_decoder import ResultDecoder


class EstimatorResultDecoder(ResultDecoder):
    """Class used to decode estimator results"""

    @classmethod
    def decode(cls, raw_result: str) -> EstimatorResult:
        """Convert the result to EstimatorResult."""
        decoded: Dict = super().decode(raw_result)
        return EstimatorResult(
            values=np.asarray(decoded["values"]),
            metadata=decoded["metadata"],
        )