#!/bin/bash

# Copyright 2017 Google
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Run this script from firebase-ios-sdk/Firestore/Protos to regnenerate the
# Objective C files from the protos.

set -euo pipefail

function StartCopyright() {
  local filename="$1"

  cat > $filename <<EOF
/*
 * Copyright 2017 Google
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

EOF
}

# pod update to install protoc and the gRPC plugin compiler.
rm -rf Pods
rm Podfile.lock
pod update

# Generate the objective C files from the protos.
./Pods/!ProtoCompiler/protoc --plugin=protoc-gen-grpc=Pods/\!ProtoCompiler-gRPCPlugin/grpc_objective_c_plugin -I protos --objc_out=objc --grpc_out=objc `find protos -name *.proto -print | xargs`

# Adjust imports in the protos to make them compile

for i in `find objc  -name "*.[mh]"` ; do
  StartCopyright $i.tmp

  sed '
    s,#import "\(.*\.pbobjc.h\),#import "Firestore/Protos/objc/\1,;
    s,#import "\(.*\.pbrpc.h\),#import "Firestore/Protos/objc/\1,;
    s,  *$,,
  ' $i >> $i.tmp

  mv $i.tmp $i
done

# Remove the unnecessary extensionRegistry functions.

for i in `find objc  -name "*.[m]" ` ; do
  ./strip-registry.py $i
done

# Remove non-buildable code from Annotations.pbobjc.*.

StartCopyright objc/google/api/Annotations.pbobjc.m
echo "static int annotations_stub  __attribute__((unused,used)) = 0;" >> objc/google/api/Annotations.pbobjc.m

StartCopyright objc/google/api/Annotations.pbobjc.h
echo "// Empty stub file" >> objc/google/api/Annotations.pbobjc.h