enhancement: add git secrets scan to CI #6

	name: Git Secrets Scan

	on:
	pull_request:
	branches:
	- master

	jobs:
	git-secrets-scan:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Set up Git Secrets
	run: \|
	sudo apt-get update
	sudo apt-get install -y git
	git clone https://github.com/awslabs/git-secrets.git
	cd git-secrets
	sudo make install
	cd ..
	git secrets --install
	git secrets --register-aws

	- name: Fetch previous commit
	run: \|
	git fetch origin +refs/heads/${{ github.base_ref }}:refs/remotes/origin/${{ github.base_ref }}
	export DIFF=$(git diff origin/${{ github.base_ref }} HEAD)
	echo "${DIFF}" > diff.txt

	- name: Filter out skipped patterns
	run: \|
	skippedPrefixes=(
	'src/data/s3control/2018-08-20/endpoint-tests-1.json.php'
	'tests/DynamoDb/MarshalerTest.php'
	'- '
	'\[ERROR\]'
	'\\n'
	'PHP_EOL'
	'Possible'
	'/usr/local/bin/git-secrets:'
	'tests/S3Control'
	'tests/Arn'
	)

	skippedRegexes=(
	'/examples-/'
	'/UpdateDataSourceRequest\$Credentials/'
	'/"AccountId": "123456789012"/'
	'/"AccountId": "999999999999"/'
	'/"Username": "username"/'
	'/"Password": "password"/'
	'/RegisterUserResponse\$UserInvitationUrl/'
	)

	# Filter out lines matching skipped prefixes
	for prefix in "${skippedPrefixes[@]}"; do
	sed -i "\\|${prefix}\|d" diff.txt
	done

	# Filter out lines matching skipped regexes
	for regex in "${skippedRegexes[@]}"; do
	sed -i -E "${regex}d" diff.txt
	done

	- name: Run Git Secrets scan on filtered diff
	run: \|
	if [ -s diff.txt ]; then
	status=$?
	if [ $status -ne 0 ]; then
	exit $status
	fi
	else
	echo "No differences found."
	fi

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