# This is the recipe.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 build function is executed in the source directory
# This function is used to compile the source code
build() {
  cd src

  # Set variables for compilation
  export GOOS=linux
  export GOARCH=amd64
  export GOROOT_FINAL=/usr/lib/go
  [ -z "$GOROOT_BOOTSTRAP" ] && export GOROOT_BOOTSTRAP=/usr/lib/go
  
  ./make.bash -v
}

# The check function is executed in the source directory
# This function is used to run tests to verify the package has been compiled correctly
check() {
  cd src
  
  export GO_TEST_TIMEOUT_SCALE=3
  ./run.bash --no-rebuild -v -v -v -k -run "!cmd/cgo/internal/testsanitizers"
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  install -d "$BPM_OUTPUT"/usr/bin \
             "$BPM_OUTPUT"/usr/lib/go \
             "$BPM_OUTPUT"/usr/share/doc/go \
             "$BPM_OUTPUT"/usr/lib/go/pkg/linux_amd64_{dynlink,race}

  cp -a bin pkg src lib misc api test "${BPM_OUTPUT}/usr/lib/go"
  install -Dm644 go.env "$BPM_OUTPUT"/usr/lib/go/go.env
  install -Dm644 VERSION "$BPM_OUTPUT"/usr/lib/go/VERSION

  # Symlink go binaries to usr/bin
  ln -sf /usr/lib/go/bin/go "$BPM_OUTPUT"/usr/bin/go
  ln -sf /usr/lib/go/bin/gofmt "$BPM_OUTPUT"/usr/bin/gofmt

  # Install documentation
  cp -r doc/* "$BPM_OUTPUT"/usr/share/doc/go
  ln -sf /usr/share/doc/go "$BPM_OUTPUT"/usr/lib/go/doc

  # Remove unwanted directory
  rm -rf "$BPM_OUTPUT"/usr/lib/go/pkg/bootstrap "$BPM_OUTPUT"/usr/lib/go/pkg/tool/*/api

  # Install package license
  install -Dm644 "$BPM_SOURCE"/LICENSE "$BPM_OUTPUT"/usr/share/licenses/golang/LICENSE
}