classdef Time_Shifter < handle

    properties(Access=public)
        value
    end

    methods(Access=public)
        function obj = Time_Shifter(options)
            arguments(Input)

                options.value = 0;

            end

            fn = fieldnames(options);
            for n = 1:numel(fn)
                obj.(fn{n}) = options.(fn{n});
            end

            %obj-Initialization here%

        end

        function [data_out, tau_hat] = process(obj, data_in)

            data_out = data_in;
            x = data_in.signal;
            R = fft(x);
            k = (0:length(R)-1).';
            phaseRamp = exp(-1j * 2*pi * (k/length(R)) * obj.value);
            R_shifted = R .* phaseRamp;
            data_out.signal = real(ifft(R_shifted));
        
        end


    end
end