#!/bin/bash

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#
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# modification, are permitted provided that the following conditions are
# met:
#
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# in the documentation and/or other materials provided with the
# distribution.
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#
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -e
cd $(dirname $0)/../../..

PROTO_DIR="src/proto/grpc/reflection/v1alpha"
PROTO_FILE="reflection"
HEADER_DIR="include/grpc++/ext"
SRC_DIR="src/cpp/ext"
INCLUDE_DIR="grpc++/ext"
TMP_DIR="tmp"

if hash grpc_cpp_plugin 2>/dev/null; then
  GRPC_PLUGIN=$(which grpc_cpp_plugin)
else
  if [ -f bins/opt/grpc_cpp_plugin ]; then
    GRPC_PLUGIN="bins/opt/grpc_cpp_plugin"
  else
    echo "gRPC protoc plugin not found"
    exit 1
  fi
fi

if hash protoc 2>/dev/null; then
  PROTOC=$(which protoc)
else
  if [ -f bins/opt/protobuf/protoc ]; then
    PROTOC="bins/opt/protobuf/protoc"
  else
    echo "protoc not found"
    exit 1
  fi
fi

TMP_DIR=${TMP_DIR}_${PROTO_FILE}

[ ! -d $HEADER_DIR ] && mkdir -p $HEADER_DIR || :
[ ! -d $SRC_DIR ] && mkdir -p $SRC_DIR || :
[ ! -d $TMP_DIR ] && mkdir -p $TMP_DIR || :

$PROTOC -I$PROTO_DIR --cpp_out=$TMP_DIR ${PROTO_DIR}/${PROTO_FILE}.proto
$PROTOC -I$PROTO_DIR --grpc_out=$TMP_DIR --plugin=protoc-gen-grpc=${GRPC_PLUGIN} ${PROTO_DIR}/${PROTO_FILE}.proto

sed -i "s/\"${PROTO_FILE}.pb.h\"/<${INCLUDE_DIR/\//\\\/}\/${PROTO_FILE}.pb.h>/g" ${TMP_DIR}/${PROTO_FILE}.pb.cc
sed -i "s/\"${PROTO_FILE}.pb.h\"/<${INCLUDE_DIR/\//\\\/}\/${PROTO_FILE}.pb.h>/g" ${TMP_DIR}/${PROTO_FILE}.grpc.pb.h
sed -i "s/\"${PROTO_FILE}.pb.h\"/<${INCLUDE_DIR/\//\\\/}\/${PROTO_FILE}.pb.h>/g" ${TMP_DIR}/${PROTO_FILE}.grpc.pb.cc
sed -i "s/\"${PROTO_FILE}.grpc.pb.h\"/<${INCLUDE_DIR/\//\\\/}\/${PROTO_FILE}.grpc.pb.h>/g" ${TMP_DIR}/${PROTO_FILE}.grpc.pb.cc

sed -i "1s/.*/\/\/ Generated by tools\/codegen\/extensions\/gen_refelction_proto.sh/g" ${TMP_DIR}/*.pb.h
sed -i "1s/.*/\/\/ Generated by tools\/codegen\/extensions\/gen_refelction_proto.sh/g" ${TMP_DIR}/*.pb.cc

/bin/cp LICENSE ${TMP_DIR}/TMP_LICENSE
sed -i -e "s/./ &/" -e "s/.*/ \*&/" ${TMP_DIR}/TMP_LICENSE
sed -i -r "\$a\ *\n *\/\n\n"  ${TMP_DIR}/TMP_LICENSE

sed -i -e "1s/^/ *\n/" -e "1s/^/\/*\n/" ${TMP_DIR}/*.pb.h
sed -i -e "1s/^/ *\n/" -e "1s/^/\/*\n/" ${TMP_DIR}/*.pb.cc

sed -i "2r ${TMP_DIR}/TMP_LICENSE" ${TMP_DIR}/*.pb.h
sed -i "2r ${TMP_DIR}/TMP_LICENSE" ${TMP_DIR}/*.pb.cc

/bin/mv ${TMP_DIR}/${PROTO_FILE}.pb.h ${HEADER_DIR}
/bin/mv ${TMP_DIR}/${PROTO_FILE}.grpc.pb.h ${HEADER_DIR}
/bin/mv ${TMP_DIR}/${PROTO_FILE}.pb.cc ${SRC_DIR}
/bin/mv ${TMP_DIR}/${PROTO_FILE}.grpc.pb.cc ${SRC_DIR}
/bin/rm -r $TMP_DIR