%SPEC load meta data from a spec file

% Academic License Agreement
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% Source Code
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% Introduction 
% •	This license agreement sets forth the terms and conditions under which the PAUL SCHERRER INSTITUT (PSI), CH-5232 Villigen-PSI, Switzerland (hereafter "LICENSOR") 
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% Additionally, any publication using the package, or any translation of the code into another computing language should cite for difference map:
% P. Thibault, M. Dierolf, A. Menzel, O. Bunk, C. David, F. Pfeiffer, High-resolution scanning X-ray diffraction microscopy, Science 321, 379–382 (2008). 
%   (doi: 10.1126/science.1158573),
% for maximum likelihood:
% P. Thibault and M. Guizar-Sicairos, Maximum-likelihood refinement for coherent diffractive imaging, New J. Phys. 14, 063004 (2012). 
%   (doi: 10.1088/1367-2630/14/6/063004),
% for mixed coherent modes:
% P. Thibault and A. Menzel, Reconstructing state mixtures from diffraction measurements, Nature 494, 68–71 (2013). (doi: 10.1038/nature11806),
% and/or for multislice:
% E. H. R. Tsai, I. Usov, A. Diaz, A. Menzel, and M. Guizar-Sicairos, X-ray ptychography with extended depth of field, Opt. Express 24, 29089–29108 (2016). 
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function p = artificial(p)
import io.*
import utils.update_param
import utils.verbose
import utils.get_option

%%%%%%%%%%%%%%%%%%%
%%% new params %%%%
%%%%%%%%%%%%%%%%%%%

verbose(3,'- Preparing artificial scan')

%% LOAD DEFAULTS FOR THE SIMULAITON FROM  p.artificial_data_file
assert(exist(p.artificial_data_file, 'file')>0, sprintf('Missing file %s\n', p.artificial_data_file))
run(fullfile(p.ptycho_matlab_path, p.artificial_data_file));

% enforce matlab preparator, python is not supported 
p.prepare.data_preparator = 'matlab';                                    % use matlab data preparator 


if ~strcmpi(p.detector.name, 'virtual')
    p.detector.name = 'virtual';                                    % 'spec', 'omny' or empty (scan params are defined below)
    verbose(2, 'Switching to "virtual" detector to generate artificial data')
end

% avoid legacy
if ~isfield(p.prepare, 'legacy')
    p.prepare.legacy = false;
end

if ~isempty(p.scan_number)
    assert(length(p.scan_number) == length(p.simulation.dataset ), 'Number of scans does not correspond to number of objects in artificial data template')
else
    p.scan_number = 1:length(p.simulation.dataset );
end

p.scan_number = p.scan_number;

% rewrite some parameters by values in artificial_data_template
p.energy = p.simulation.energy; 
p.numscans = length(p.simulation.dataset ); 

end