description="A tool for working with Protocol Buffers"
url="https://buf.build"

packager="Grat-OS Team"
maintainer="Grat-OS Team"

name=buf
version=1.64.0
release=1

goversion=1.25.5

PKGMK_KEEP_SOURCES="no"

source=(https://github.com/bufbuild/buf/archive/refs/tags/v${version}.tar.gz)

prepare() {
  cd $name-$version

  wget https://golang.org/dl/go$goversion.linux-amd64.tar.gz
  tar -C $SRC -xf go$goversion.linux-amd64.tar.gz

  export CGO_LDFLAGS="${LDFLAGS}"
  export CGO_CFLAGS="${CFLAGS}"
  export CGO_CPPFLAGS="${CPPFLAGS}"
  export CGO_CXXFLAGS="${CXXFLAGS}"
  export PATH=$SRC/go/bin:$PATH
  export GOPATH=$SRC/go/bin
  export GOCACHE=/tmp
  export GOFLAGS="-buildmode=pie -trimpath"
  export CGO_LDFLAGS_ALLOW="-Wl,-z,now"

  # create directory for build output
  mkdir build

  # verify modules
  go mod verify
}

build() {
  cd $name-$version

  export CGO_CPPFLAGS="${CPPFLAGS}"
  export CGO_CFLAGS="${CFLAGS}"
  export CGO_CXXFLAGS="${CXXFLAGS}"
  export CGO_LDFLAGS="${LDFLAGS}"
  export PATH=$SRC/go/bin:$PATH
  export GOPATH=$SRC/go/bin
  export GOCACHE=/tmp

  go build -v \
           -buildmode=pie \
           -mod=readonly \
           -modcacherw \
           -ldflags "-compressdwarf=false \
           -linkmode external \
           -extldflags '${LDFLAGS}'" \
           -o build \
           ./cmd/...

  # generate shell completions
  for shell in bash fish zsh; do
    ./build/buf completion "$shell" > "build/completion.$shell"
  done

  # generate manpages
  mkdir -p build/manpages
  ./build/buf manpages build/manpages
}

package() {
  cd $name-$version

  # binaries
  install -vDm755 -t $pkgdir/usr/bin build/{buf,protoc-gen-buf-lint,protoc-gen-buf-breaking}

  # shell completions
  install -vDm644 build/completion.bash $pkgdir/usr/share/bash-completion/completions/buf
  install -vDm644 build/completion.fish $pkgdir/usr/share/fish/vendor_completions.d/buf.fish
  install -vDm644 build/completion.zsh $pkgdir/usr/share/zsh/site-functions/_buf

  # man pages
  install -vDm644 build/manpages/* -t $pkgdir/usr/share/man/man1
}