#!/bin/bash -eu
# Copyright 2020 Google Inc.
#
# 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.
#
################################################################################

cd $GOPATH/src/github.com/ipfs/go-datastore/fuzz

function compile_ds_fuzzer {
  fuzzer=$1

  if [ $# == 2 ]; then
    rm provider* || true
    DS_PROVIDERS="$2" go generate
  fi

  # vendor dependencies since go-fuzz doesn't play nicely with go mod.
  rm -rf vendor .gopath || true
  go mod vendor
  mkdir .gopath
  cd .gopath
  ln -s ../vendor src
  cd ..

  # Compile and instrument all Go files relevant to this fuzz target.
  GO111MODULE=off GOPATH=$PWD/.gopath go-fuzz -o $fuzzer.a .

  # Link Go code ($fuzzer.a) with fuzzing engine to produce fuzz target binary.
  $CXX $CXXFLAGS $LIB_FUZZING_ENGINE $fuzzer.a -o $OUT/$fuzzer
}

compile_ds_fuzzer ipfs_ds_flatfs
compile_ds_fuzzer ipfs_ds_badger "github.com/ipfs/go-ds-badger"
compile_ds_fuzzer ipfs_ds_badger2 "github.com/ipfs/go-ds-badger2"