#!/usr/bin/env bash

if (($# < 2)); then
  echo "usage: $0 <language> <halt|recover> [libFuzzer args...]" >&2
  exit 1
fi

set -eu

export ASAN_OPTIONS=quarantine_size_mb=10:detect_leaks=1:symbolize=1
export UBSAN=print_stacktrace=1:halt_on_error=1:symbolize=1

# check if CI env var exists
if [[ -z ${CI:-} ]]; then
  declare -A mode_config=(
    [halt]='-timeout=1 -rss_limit_mb=2048'
    [recover]='-timeout=10 -rss_limit_mb=2048'
  )
else
  declare -A mode_config=(
    [halt]='-max_total_time=120 -timeout=1 -rss_limit_mb=2048'
    [recover]='-time=120 -timeout=10 -rss_limit_mb=2048'
  )
fi

lang="$1"
shift
mode="$1"
shift
# Treat remainder of arguments as libFuzzer arguments

# Fuzzing logs and testcases are always written to `pwd`, so `cd` there first
results="$PWD/test/fuzz/out/fuzz-results/${lang}"
mkdir -p "${results}"
cd "${results}"

# Create a corpus directory, so new discoveries are stored on disk. These will
# then be loaded on subsequent fuzzing runs
mkdir -p corpus

# shellcheck disable=SC2086
../../${lang}_fuzzer -dict="../../${lang}.dict" -artifact_prefix=${lang}_ -max_len=2048 ${mode_config[$mode]} corpus "$@"