%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  SaturnCoefficient
%global packver   1.3
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.3
Release:          1%{?dist}%{?buildtag}
Summary:          Statistical Evaluation of UMAP Dimensionality Reductions

License:          GPL-3
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 4.0.0
Requires:         R-core >= 4.0.0
BuildArch:        noarch
BuildRequires:    R-CRAN-MatrixCorrelation 
BuildRequires:    R-CRAN-ProjectionBasedClustering 
BuildRequires:    R-stats 
BuildRequires:    R-CRAN-umap 
Requires:         R-CRAN-MatrixCorrelation 
Requires:         R-CRAN-ProjectionBasedClustering 
Requires:         R-stats 
Requires:         R-CRAN-umap 

%description
A metric expressing the quality of a UMAP layout. This is a package that
contains the Saturn_coefficient() function that reads an input matrix, its
dimensionality reduction produced by UMAP, and evaluates the quality of
this dimensionality reduction by producing a real value in the [0; 1]
interval. We call this real value Saturn coefficient. A higher value means
better dimensionality reduction; a lower value means worse dimensionality
reduction. Reference: Davide Chicco et al. "The Saturn coefficient for
evaluating the quality of UMAP dimensionality reduction results" (2025, in
preparation).

%prep
%setup -q -c -n %{packname}

# fix end of executable files
find -type f -executable -exec grep -Iq . {} \; -exec sed -i -e '$a\' {} \;
# prevent binary stripping
[ -d %{packname}/src ] && find %{packname}/src -type f -exec \
  sed -i 's@/usr/bin/strip@/usr/bin/true@g' {} \; || true
[ -d %{packname}/src ] && find %{packname}/src/Make* -type f -exec \
  sed -i 's@-g0@@g' {} \; || true
# don't allow local prefix in executable scripts
find -type f -executable -exec sed -Ei 's@#!( )*/usr/local/bin@#!/usr/bin@g' {} \;

%build

%install

mkdir -p %{buildroot}%{rlibdir}
%{_bindir}/R CMD INSTALL -l %{buildroot}%{rlibdir} %{packname}
test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
rm -f %{buildroot}%{rlibdir}/R.css
# remove buildroot from installed files
find %{buildroot}%{rlibdir} -type f -exec sed -i "s@%{buildroot}@@g" {} \;

%files
%{rlibdir}/%{packname}