# This is the source.sh script. It is executed by BPM in a temporary directory when compiling a source package
# BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
# BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT

# The prepare function is executed in the root of the temp directory
# This function is used for putting downloaded files to the correct location or applying patches
prepare() {
  cd "$BPM_SOURCE"
  for nimcfg in {compiler,config}/nim.cfg; do
    echo "gcc.options.always %= \"\${gcc.options.always} ${CFLAGS:-} ${CPPFLAGS}\"" >> "$nimcfg"
    echo "gcc.options.linker %= \"\${gcc.options.linker} ${LDFLAGS:-}\"" >> "$nimcfg"
  done

}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  # Compile nim
  sh build.sh

  # Compile koch
  ./bin/nim c -d:release koch
  ./koch boot -d:release -d:nativeStacktrace -d:useGnuReadline

  # Compile libraries
  ( cd lib; ../bin/nim c --app:lib -d:createNimRtl -d:release nimrtl.nim )

  # Compile tools
  ./koch tools
  ( cd tools; ../bin/nim c -d:release nimgrep.nim )

  # Compile nimsuggest
  ./bin/nim c -d:release nimsuggest/nimsuggest.nim
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  ./koch install "$BPM_OUTPUT"

  # Install libraries and compiler
  install -d "$BPM_OUTPUT"/usr/lib
  cp -a lib "$BPM_OUTPUT"/usr/lib/nim
  cp -a compiler "$BPM_OUTPUT"/usr/lib/nim
  install -Dm644 nim.nimble "$BPM_OUTPUT"/usr/lib/nim/compiler
  install -m755 lib/libnimrtl.so "$BPM_OUTPUT"/usr/lib/libnimrtl.so

  # Install binaries
  install -Dm755 bin/* -t "$BPM_OUTPUT"/usr/bin

  # Install configuration
  install -Dm644 config/* -t "$BPM_OUTPUT"/etc/nim

  # Move header files
  install -d "$BPM_OUTPUT"/usr/include
  cp -a "$BPM_OUTPUT"/usr/lib/nim/*.h -t "$BPM_OUTPUT"/usr/include

  # Fix wrong path for system.nim
  ln -s /usr/lib/nim "$BPM_OUTPUT"/usr/lib/nim/lib
  
  # Install shell completion
  install -Dm644 tools/nim.bash-completion "$BPM_OUTPUT"/usr/share/bash-completion/completions/nim
  install -Dm644 tools/nim.zsh-completion "$BPM_OUTPUT"/usr/share/zsh/site-functions/_nim

  # Remove unwanted files
  rm -r "$BPM_OUTPUT"/nim

  # Install package license
  install -Dm644 "$BPM_SOURCE"/copying.txt "$BPM_OUTPUT"/usr/share/licenses/nim/copying.txt
}