From fbf38c255eeef1c96f63bc52ceccea430a7474b8 Mon Sep 17 00:00:00 2001
From: Michael Bumann <hello@michaelbumann.com>
Date: Fri, 28 Aug 2020 14:37:57 +0200
Subject: [PATCH] Add script to generate LND ruby GRPC service files

---
 README.md                      | 16 +++-------------
 generate-grpc-service-files.sh | 30 ++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 13 deletions(-)
 create mode 100755 generate-grpc-service-files.sh

diff --git a/README.md b/README.md
index 3ca5cd7..263eaa6 100644
--- a/README.md
+++ b/README.md
@@ -159,21 +159,11 @@ see [rubygems](https://rubygems.org/gems/lnrpc) for all available releases.
 
 ### Update service definitions
 
-1. Generate `prc_pb.rb` and `rpc_services_pb.rb`
+The script `generate-grpc-service-files.sh` can be used to generate the GRPC ruby files.
+The files will be stored in `lib/grpc_services`
 
-    $ grpc_tools_ruby_protoc -I/usr/local/include -I. -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis --ruby_out=plugins=grpc,paths=source_relative:. --grpc_out=. rpc.proto
+    $ ./generate-grpc-service-files.sh
 
-2. Copy `rpc.proto`, `rpc_pb.rb` and `rpc_services_pb.rb` to `lib`
-
-3. Update `rpc_services_pb.rb` to use `require_relative` to load `rpc_pb`
-
-4. Generate `router_pb.rb` and `router_services_pb.rb`
-
-    $ grpc_tools_ruby_protoc -I/usr/local/include -I. -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis -I$GOPATH/src/github.com/lightningnetwork/lnd/lnrpc --ruby_out=plugins=grpc,paths=source_relative:. --grpc_out=. router.proto
-
-5. Copy `router.proto`, `router_pb.rb` and `router_services_pb.rb` to `lib`
-
-6. Update `router_services_pb.rb` to use `require_relative` to load `router_pb`
 
 ## Other resources
 
diff --git a/generate-grpc-service-files.sh b/generate-grpc-service-files.sh
new file mode 100755
index 0000000..787ffa2
--- /dev/null
+++ b/generate-grpc-service-files.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+set -o xtrace
+
+FULL_PATH=$(realpath $0)
+GEM_DIR=$(dirname $FULL_PATH)
+LNRPC_TARGET_DIR="$GEM_DIR/lib/grpc_services"
+CURRENT_DIR=$(pwd)
+echo $CURRENT_DIR
+cd $GOPATH/src/github.com/lightningnetwork/lnd/lnrpc
+
+echo "Generating Ruby GRPC Service Files"
+
+PROTOS="rpc.proto walletunlocker.proto **/*.proto"
+
+# generate files for each proto
+for file in $PROTOS; do
+  DIRECTORY=$(dirname "${file}")
+  echo "Generating protos from ${file}, into ${LNRPC_TARGET_DIR}/${DIRECTORY}"
+
+  # writes all ruby files in the ruby directory
+  grpc_tools_ruby_protoc -I/usr/local/include \
+    -I. \
+    -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis \
+    -I$GOPATH/src/github.com/lightningnetwork/lnd/lnrpc \
+    --ruby_out=plugins=grpc,paths=source_relative:${LNRPC_TARGET_DIR} \
+    --grpc_out=${LNRPC_TARGET_DIR} "${file}"
+
+done
+
+cd $CURRENT_DIR