#!/usr/bin/env bash

set -eu

set -o pipefail

# https://clang.llvm.org/extra/clang-tidy/

: '

Runs clang-tidy on the code in src/

Return `1` if there are files automatically fixed by clang-tidy.

Returns `0` if no fixes by clang-tidy.

TODO: should also return non-zero if clang-tidy emits warnings

or errors about things it cannot automatically fix. However I cannot

figure out how to get this working yet as it seems that clang-tidy

always returns 0 even on errors.

'

PATH_TO_CLANG_TIDY_SCRIPT="$(pwd)/mason_packages/.link/share/run-clang-tidy.py"

# make sure that run-clang-tidy.py can find the right clang-tidy

export PATH=$(pwd)/mason_packages/.link/bin:${PATH}

# build the compile_commands.json file if it does not exist

if [[ ! -f build/compile_commands.json ]]; then

# We need to clean otherwise when we make the project

# will will not see all the compile commands

make clean

# Create the build directory to put the compile_commands in

# We do this first to ensure it is there to start writing to

# immediately (make make not create it right away)

mkdir -p build

# Run make, pipe the output to the generate_compile_commands.py

# and drop them in a place that clang-tidy will automatically find them

RESULT=0

make | tee /tmp/make-node-cpp-skel-build-output.txt || RESULT=$?

if [[ ${RESULT} != 0 ]]; then

echo "Build failed, could not generate compile commands for clang-tidy, aborting!"

exit ${RESULT}

else

cat /tmp/make-node-cpp-skel-build-output.txt | scripts/generate_compile_commands.py > build/compile_commands.json

fi

fi

# change into the build directory so that clang-tidy can find the files

# at the right paths (since this is where the actual build happens)

cd build

${PATH_TO_CLANG_TIDY_SCRIPT} -fix

cd ../

# Print list of modified files

dirty=$(git ls-files --modified src/)

if [[ $dirty ]]; then

echo "The following files have been modified:"

echo $dirty

git diff

exit 1

else

exit 0

fi