#!/bin/bash
#
# This assumes all of the OS-level configuration has been completed and git repo has already been cloned
#
# This script should be run from the repo's deployment directory
# cd deployment
# ./run-unit-tests.sh
#
# This script runs all tests for the root CDK project, as well as any microservices, Lambda functions, or dependency
# source code packages. These include unit tests, integration tests, and snapshot tests.
#
# This script is called by the ../initialize-repo.sh file and the buildspec.yml file. It is important that this script
# be tested and validated to ensure that all available test fixtures are run.
#
# The if/then blocks are for error handling. They will cause the script to stop executing if an error is thrown from the
# node process running the test case(s). Removing them or not using them for additional calls with result in the
# script continuing to execute despite an error being thrown.

[ "$DEBUG" == 'true' ] && set -x
set -e

# Get reference for all important folders
template_dir="$PWD"
source_dir="$(cd $template_dir/../source; pwd -P)"

echo "Current directory: $template_dir"
echo "Source directory: $source_dir"

if [[ -e './solution_env.sh' ]]; then
    chmod +x ./solution_env.sh
    source ./solution_env.sh
else
    echo "solution_env.sh is missing from the solution root."
    exit 1
fi

if [[ -z "$SOLUTION_ID" ]]; then
    echo "SOLUTION_ID is missing from ../solution_env.sh"
    exit 1
else
    export SOLUTION_ID
fi

if [[ -z "$SOLUTION_NAME" ]]; then
    echo "SOLUTION_NAME is missing from ../solution_env.sh"
    exit 1
else
    export SOLUTION_NAME
fi

if [[ -z "$SOLUTION_TRADEMARKEDNAME" ]]; then
    echo "SOLUTION_TRADEMARKEDNAME is missing from ../solution_env.sh"
    exit 1
else
    export SOLUTION_TRADEMARKEDNAME
fi

setup_python_env() {
	if [ -d "./.venv-test" ]; then
		echo "Reusing already setup python venv in ./.venv-test. Delete ./.venv-test if you want a fresh one created."
		return
	fi
	echo "Setting up python venv"
	python3 -m venv .venv-test
	echo "Initiating virtual environment"
	source .venv-test/bin/activate
	echo "Installing python packages"
	pip3 install -U pip setuptools
	pip3 install -r requirements.txt --target .
	pip3 install -r requirements-dev.txt
	echo "deactivate virtual environment"
	deactivate
}

run_python_lambda_test() {
	lambda_name=$1
	lambda_description=$2
	echo "------------------------------------------------------------------------------"
	echo "[Test] Python Lambda: $lambda_name, $lambda_description"
	echo "------------------------------------------------------------------------------"
	cd $source_dir/lambda/$lambda_name

	[ "${CLEAN:-true}" = "true" ] && rm -fr .venv-test

	setup_python_env

	echo "Initiating virtual environment"
	source .venv-test/bin/activate

	# setup coverage report path
	mkdir -p $source_dir/test/coverage-reports
	coverage_report_path=$source_dir/test/coverage-reports/$lambda_name.coverage.xml
	echo "coverage report path set to $coverage_report_path"

	# Use -vv for debugging
	python3 -m pytest --cov --cov-report=term-missing --cov-report "xml:$coverage_report_path"
	if [ "$?" = "1" ]; then
		echo "(source/run-all-tests.sh) ERROR: there is likely output above." 1>&2
		exit 1
	fi
	sed -i -e "s,<source>$source_dir,<source>source,g" $coverage_report_path
	echo "deactivate virtual environment"
	deactivate

	if [ "${CLEAN:-true}" = "true" ]; then
		rm -fr .venv-test
		# Note: leaving $source_dir/test/coverage-reports to allow further processing of coverage reports
		rm -fr coverage
		rm .coverage
	fi
}

run_javascript_lambda_test() {
	lambda_name=$1
	lambda_description=$2
	echo "------------------------------------------------------------------------------"
	echo "[Test] Javascript Lambda: $lambda_name, $lambda_description"
	echo "------------------------------------------------------------------------------"
	cd $source_dir/lambda/$lambda_name
	[ "${CLEAN:-true}" = "true" ] && npm run clean
    npm install
	# npm ci
	npm test
	if [ "$?" = "1" ]; then
		echo "(source/run-all-tests.sh) ERROR: there is likely output above." 1>&2
		exit 1
	fi
    [ "${CLEAN:-true}" = "true" ] && rm -rf coverage/lcov-report
    mkdir -p $source_dir/test/coverage-reports/jest
    coverage_report_path=$source_dir/test/coverage-reports/jest/$lambda_name
    rm -rf $coverage_report_path
    mv coverage $coverage_report_path
}

run_cdk_project_test() {
	component_description=$1
    component_name=cdk
	echo "------------------------------------------------------------------------------"
	echo "[Test] $component_description"
	echo "------------------------------------------------------------------------------"
	cd $source_dir
    [ "${CLEAN:-true}" = "true" ] && npm run clean
	# npm ci
    npm install
	npm run build
	npm run test -- -u
	if [ "$?" = "1" ]; then
		echo "(source/run-all-tests.sh) ERROR: there is likely output above." 1>&2
		exit 1
	fi
    [ "${CLEAN:-true}" = "true" ] && rm -rf coverage/lcov-report
    mkdir -p $source_dir/test/coverage-reports/jest
    coverage_report_path=$source_dir/test/coverage-reports/jest/$component_name
    rm -rf $coverage_report_path
    echo "coverage_report_path: $coverage_report_path"
    mv coverage $coverage_report_path
}

# Option to clean or not clean the unit test environment before and after running tests.
# The environment variable CLEAN has default of 'true' and can be overwritten by caller
# by setting it to 'false'. Particularly,
#    $ CLEAN=false ./run-all-tests.sh
#
CLEAN="${CLEAN:-true}"
# CLEAN="${CLEAN:-false}"

# echo "------------------------------------------------------------------------------"
# echo "[Test] CDK Unit Tests"
# echo "------------------------------------------------------------------------------"
run_cdk_project_test "CDK - DevOps Monitoring Dashboard on AWS"

# echo "------------------------------------------------------------------------------"
# echo "[Test] Lambda Tests"
# echo "------------------------------------------------------------------------------"
run_python_lambda_test quicksight-custom-resources "Quicksight - Custom Resources"
run_javascript_lambda_test event_parser "Lambda transformation of Source Data"
run_javascript_lambda_test query_runner "Build Athena Queries"
run_javascript_lambda_test multi_account_custom_resources "Multiple Account Custom Resources"
run_javascript_lambda_test tag_query "Tag Query Lambda"

# Return to the directory where we started
cd $template_dir