gen-protoc

#!/bin/bash

# Downloads latest protoc source, builds it and puts them in the right place

set -e

[[ $(command -v curl) ]] || { echo "'curl' not found!" ; dep_check="false" ;}
[[ $(command -v wget) ]] || { echo "'wget' not found!" ; dep_check="false" ;}
[[ $(command -v unzip) ]] || { echo "'unzip' not found!" ; dep_check="false" ;}

# Build tools
[[ $(command -v make) ]] || { echo "'make' not found!" ; dep_check="false" ;}
[[ $(command -v automake) ]] || { echo "'automake' not found!" ; dep_check="false" ;}

[[ ${dep_check} = "false" ]] && { echo "Some dependencie(s) isn't installed yet. Please install that dependencie(s)" ; exit 1 ;}

gh_protoc_release_url="https://api.github.com/repos/protocolbuffers/protobuf/releases/latest"
setdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd)" # this line powered by stackoverflow
kernelname="$(uname -s | tr '[:upper:]' '[:lower:]' || { echo 'kernel name can not defined' ; exit 1 ;})"
machinetype=$(uname -m)
case $machinetype in
  "x86_64") arch="amd64"
    ;;
  "aarch64") arch="arm64"
    ;;
  "arm64") arch="arm64"
    ;;
  *) echo "$machinetype is not supported"; exit 1;
    ;;
esac
fname=protoc-$kernelname-$arch

# Check dir else create save dir
if [[ $(basename "${setdir}") = "scripts" ]] ; then
    if [[ $(basename "$(dirname "${setdir}")") = "cli" ]] ; then
        [[ -d $(dirname "${setdir}/pkg/protoc/data") ]] || mkdir -p "$(dirname "${setdir}")/ignite/pkg/protoc/data"
    else
        echo "Attention: you are running the script out of the starport project please run it this script in: https://github.com/tendermint/starport"
        exit 1
    fi
else
    echo "$setdir"
    echo "Attention: you are running the script out of the starport project please run it this script in: https://github.com/tendermint/starport"
    exit 1
fi

# Check if we have the newest version already
version_file=$(dirname "${setdir}")/scripts/data/gen-protoc/version-"$kernelname"-"$arch"
newest_version="v3.20.0"
download_url="https://github.com/protocolbuffers/protobuf/releases/download/v3.20.0/protobuf-all-3.20.0.tar.gz"
current_version=$(cat "$version_file")

if [[ "$newest_version" == "$current_version" ]] ; then
    echo "Newest version already built, exiting early, all good"
    exit 0
fi

# Check and Create Temp Directory
tmpdir=$(mktemp -d)
cd "$tmpdir"

outputdir="$tmpdir/protocout"
mkdir "$outputdir"
mkdir protobuf # Where we will build

# Fetch releases, go through assets (release artifacts) and find the relevant one
wget -c "$download_url" -O - | tar xzC protobuf --strip-components=1 #skipping first folder

# Ok, let's build!
# Build instructions taken from: https://github.com/protocolbuffers/protobuf/blob/main/src/README.md
cd protobuf
./configure CXXFLAGS="-DNDEBUG" --prefix="$outputdir" --disable-shared # Static linked libraries so it works on all machines
make clean
make -j$(nproc)
make install

cp "$outputdir"/bin/protoc "$(dirname "${setdir}")/ignite/pkg/protoc/data/${fname}"
echo "$newest_version" > "$version_file" #Update version file so we don't have to rebuild this

rm -rf "$tmpdir"