#!/bin/bash

if [[ ! -d /tmp/output/${OS_IDENTIFIER} ]]; then
  mkdir -p "/tmp/output/${OS_IDENTIFIER}"
fi

# R 3.x requires PCRE1
pcre_lib='pcre2-devel'
if [[ "${R_VERSION}" =~ ^3 ]]; then
  pcre_lib='pcre-devel'
fi

# create post-install script required for openblas
cat <<EOF >> /post-install.sh
mv /opt/R/${R_VERSION}/lib/R/lib/libRblas.so /opt/R/${R_VERSION}/lib/R/lib/libRblas.so.keep
ln -s /usr/lib64/libopenblas.so /opt/R/${R_VERSION}/lib/R/lib/libRblas.so
EOF

# create after-remove script to remove internal blas
cat <<EOF >> /after-remove.sh
if [ -d /opt/R/${R_VERSION} ]; then
  rm -r /opt/R/${R_VERSION}
fi
EOF

if [ "$(arch)" == "aarch64" ]; then echo arm64; else echo amd64; fi > /tmp/arch

cat <<EOF > /tmp/nfpm.yml
name: R-${R_VERSION}
version: 1
version_schema: none
arch: $(cat /tmp/arch)
release: 1
maintainer: Posit Software, PBC <https://github.com/rstudio/r-builds>
description: |
  GNU R statistical computation and graphics system
vendor: Posit Software, PBC
homepage: https://www.r-project.org
license: GPLv2+
depends:
- fontconfig
- gcc
- gcc-c++
- gcc-fortran
- glibc-locale
- gzip
- icu.691-devel
- libbz2-devel
- libcairo2
- libcurl-devel
- libfreetype6
- libgomp1
- libjpeg62
- libpango-1_0-0
- libreadline7
- libtiff5
- make
- openblas-devel
- ${pcre_lib}
- tar
- tcl
- tk
- unzip
- which
- xorg-x11
- xorg-x11-fonts-100dpi
- xorg-x11-fonts-75dpi
- xz-devel
- zip
- zlib-devel
contents:
- src: /opt/R/${R_VERSION}
  dst: /opt/R/${R_VERSION}
scripts:
  postinstall: /post-install.sh
  postremove: /after-remove.sh
EOF

nfpm package \
  -f /tmp/nfpm.yml \
  -p rpm \
  -t "/tmp/output/${OS_IDENTIFIER}"

export PKG_FILE=$(ls /tmp/output/${OS_IDENTIFIER}/R-${R_VERSION}*.rpm | head -1)