#!/bin/bash

# Copyright (c) 2026 Huawei Device Co., Ltd.
# 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.

# $1 - search path (file or directory or multiple)

curDir="$(pwd)"
rootDir="$(git rev-parse --show-toplevel)"

mkfile() { mkdir -p "$(dirname "$1")" && touch "$1" ;  }

patchFile="./patches/clang-format.patch"
patchFile=$(readlink -m $patchFile)
mkfile $patchFile
> $patchFile

searchDir=($@)
searchDir=${searchDir[@]:0}
searchDir=$(readlink -m $searchDir)

cd $rootDir
searchDir=$(realpath -m --relative-to=$rootDir $searchDir)
echo "Search paths: "$searchDir
files=($(find $searchDir -not -iname "*.ttf.cc" -and -type f -and \( -iname '*.h' -or -iname '*.cpp' \)))

for file in ${files[*]}
do
    fileCopy=$file".copy"
    cp $file $fileCopy
    echo "Checking clang format: "$file
    clang-format $fileCopy --style=file -i
    git diff --no-index $file $fileCopy >> $patchFile
    sed -i "s|$fileCopy|$file|g" $patchFile
    rm $fileCopy
done
cd $curDir

echo "Patch saved: "$patchFile