#!/usr/bin/env bash

# Copyright 2018 Steven Bosnick
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE-2.0 or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms

set -ev

if [[ $# -lt 1 ]]; then
    cat <<- EOF
    usage: $0 coverage_dir_base

    coverage_dir_base is the base working directory for kcov
EOF
    exit
fi

coverage_dir="${1}/kcov"

# Clear old coverage data directory
if [[ -e "${coverage_dir}" ]]; then
    rm -r "${coverage_dir}"
fi
mkdir -p "${coverage_dir}/luther"
mkdir "${coverage_dir}/luther_derive"

# Generate coverage data for test binaries for luther project
while read test_binary
do
    # create directory
    working_dir="${coverage_dir}/luther/$(basename ${test_binary})"
    mkdir "${working_dir}"

    # run kcov
    kcov --include-path=. --exclude-line=COV_EXCL_LINE --exclude-region=COV_EXCL_START:COV_EXCL_END "${working_dir}" "${test_binary}"

done < <(cargo test --no-run --message-format json | jq --raw-output 'select(.profile.test).filenames[0]')

# Generate coverage data for the luther_derive testsuite
./luther-derive/testsuite/runtests "${coverage_dir}/luther_derive"

# Check if this is running on Travis CI and set option to upload to coveralls
if [[ -z "${TRAVIS}" ]]; then 
    coveralls_id_arg=""
else
    coveralls_id_arg="--coveralls-id=${TRAVIS_JOB_ID}"
fi

# Merge the coverage data and upload to coveralls
mkdir "${coverage_dir}/merge"
echo kcov --merge ${coveralls_id_arg} --exclude-line=COV_EXCL_LINE --exclude-region=COV_EXCL_START:COV_EXCL_END "${coverage_dir}"/merge "${coverage_dir}"/luther/* "${coverage_dir}/luther_derive"
kcov --merge ${coveralls_id_arg} --exclude-line=COV_EXCL_LINE --exclude-region=COV_EXCL_START:COV_EXCL_END "${coverage_dir}"/merge "${coverage_dir}"/luther/* "${coverage_dir}/luther_derive"