%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  ET0TempModels
%global packver   1.0.0
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.0.0
Release:          1%{?dist}%{?buildtag}
Summary:          Evapotranspiration Estimation Using Temperature-Based Models

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


BuildRequires:    R-devel >= 3.5.0
Requires:         R-core >= 3.5.0
BuildArch:        noarch
BuildRequires:    R-graphics 
BuildRequires:    R-grDevices 
BuildRequires:    R-stats 
Requires:         R-graphics 
Requires:         R-grDevices 
Requires:         R-stats 

%description
Provides functions to estimate daily reference evapotranspiration (ET0)
using 10 temperature-based empirical models, with the Food and Agriculture
Organization (FAO) Penman-Monteith method included as the standard
reference for model comparison. Includes statistical evaluation metrics,
such as Nash-Sutcliffe efficiency (NSE), root mean square error (RMSE),
mean absolute error (MAE), and mean bias error (MBE), and visualization
tools (scatter plots and Taylor diagrams). Based on Singh et al. (2026)
<doi:10.1016/j.ejrh.2026.103925>.

%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}