import math
import numpy as np
import tensorflow as tf

class Signal:

    @property
    def rect_x(self) -> np.ndarray:
        return self.rect[:, 0]

    @property
    def rect_y(self) -> np.ndarray:
        return self.rect[:, 1]

    @property
    def rect(self) -> np.ndarray:
        raise NotImplemented("Not implemented")

    def set_rect_xy(self, x_mat: np.ndarray, y_mat: np.ndarray):
        raise NotImplemented("Not implemented")

    def set_rect(self, mat: np.ndarray):
        raise NotImplemented("Not implemented")

    @property
    def apf(self):
        raise NotImplemented("Not implemented")


class COMComponent:
    def __init__(self, epoch_size=100):
        self._epoch = epoch_size


class Channel(COMComponent):
    """
    Communication base module containing all model structure.
    This model is just empty therefore just bypasses any input to output
    """

    def forward(self, values: Signal) -> Signal:
        raise NotImplemented("Need to define forward function")

    def forward_tensor(self, tensor: tf.Tensor) -> tf.Tensor:
        """
        Forward operation optimised for tensorflow tensors
        """
        raise NotImplemented("Need to define forward_tensor function")


class ModComponent(COMComponent):
    def __init__(self, alphabet_size, **kwargs):
        super().__init__(**kwargs)
        self.N = math.ceil(math.log2(alphabet_size))
        self.alphabet_size = alphabet_size


class Modulator(ModComponent):

    def forward(self, binary: np.ndarray) -> Signal:
        """
        :param binary: raw bytes as input (most be dtype=bool)
        :return: amplitude, phase, frequency
        """
        raise NotImplemented("Need to define forward function")


class Demodulator(ModComponent):

    def forward(self, values: Signal) -> np.ndarray:
        """
        :param values: value generator, each iteration returns tuple of (amplitude, phase, frequency)
        :return: binary resulting values (dtype=bool)
        """
        raise NotImplemented("Need to define forward function")