#include <fsfw/storagemanager/LocalPool.h>
#include <catch2/catch_test_macros.hpp>
#include <unittest/core/CatchDefinitions.h>
#include <array>

TEST_CASE( "New Accessor" , "[NewAccessor]") {
	LocalPool::LocalPoolConfig poolCfg = {{1, 10}};
	LocalPool SimplePool = LocalPool(0, poolCfg);
	std::array<uint8_t, 20> testDataArray;
	std::array<uint8_t, 20> receptionArray;
	store_address_t testStoreId;
	ReturnValue_t result = retval::CATCH_FAILED;

	for(size_t i = 0; i < testDataArray.size(); i++) {
		testDataArray[i] = i;
	}
	size_t size = 10;

	SECTION ("Simple tests getter functions") {
		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		REQUIRE(result == retval::CATCH_OK);
		auto resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == retval::CATCH_OK);
		resultPair.second.getDataCopy(receptionArray.data(), 20);
		CHECK(resultPair.second.getId() == testStoreId);
		CHECK(resultPair.second.size() == 10);
		for(size_t i = 0; i < size; i++) {
			CHECK(receptionArray[i] == i );
		}

		std::copy(resultPair.second.data(), resultPair.second.data() +
				resultPair.second.size(), receptionArray.data());
		for(size_t i = 0; i < size; i++) {
			CHECK(receptionArray[i] == i );
		}

		{
			auto resultPairLoc = SimplePool.getData(testStoreId);
			REQUIRE(resultPairLoc.first == retval::CATCH_OK);
			// data should be deleted when accessor goes out of scope.
		}
		resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == (int) StorageManagerIF::DATA_DOES_NOT_EXIST);

		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		REQUIRE(result == retval::CATCH_OK);
		{
			ConstStorageAccessor constAccessor(testStoreId);
			result = SimplePool.getData(testStoreId, constAccessor);
			REQUIRE(result == retval::CATCH_OK);
			constAccessor.getDataCopy(receptionArray.data(), 20);
			for(size_t i = 0; i < size; i++) {
				CHECK(receptionArray[i] == i );
			}
			// likewise, data should be deleted when accessor gets out of scope.
		}
		resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == (int) StorageManagerIF::DATA_DOES_NOT_EXIST);

		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		{
			resultPair = SimplePool.getData(testStoreId);
			REQUIRE(resultPair.first == retval::CATCH_OK);
			resultPair.second.release();
			// now data should not be deleted anymore
		}
		resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == retval::CATCH_OK);
		resultPair.second.getDataCopy(receptionArray.data(), 20);
		for(size_t i = 0; i < size; i++) {
			CHECK(receptionArray[i] == i );
		}
	}


	SECTION("Simple tests modify functions") {
		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		REQUIRE(result == retval::CATCH_OK);
		{
			StorageAccessor accessor(testStoreId);
			result = SimplePool.modifyData(testStoreId, accessor);
			REQUIRE(result == retval::CATCH_OK);
			CHECK(accessor.getId() == testStoreId);
			CHECK(accessor.size() == 10);
			accessor.getDataCopy(receptionArray.data(), 20);
			for(size_t i = 0; i < size; i++) {
				CHECK(receptionArray[i] == i );
			}
			std::copy(accessor.data(), accessor.data() +
					accessor.size(), receptionArray.data());
			for(size_t i = 0; i < size; i++) {
				CHECK(receptionArray[i] == i );
			}
			// data should be deleted when accessor goes out of scope
		}
		auto resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == (int) StorageManagerIF::DATA_DOES_NOT_EXIST);

		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		REQUIRE(result == retval::CATCH_OK);
		{
			auto resultPairLoc = SimplePool.modifyData(testStoreId);
			REQUIRE(resultPairLoc.first == retval::CATCH_OK);
			CHECK(resultPairLoc.second.getId() == testStoreId);
			CHECK(resultPairLoc.second.size() == 10);
			resultPairLoc.second.getDataCopy(receptionArray.data(), 20);
			for(size_t i = 0; i < size; i++) {
				CHECK(receptionArray[i] == i );
			}
			std::copy(resultPairLoc.second.data(), resultPairLoc.second.data() +
					resultPairLoc.second.size(), receptionArray.data());
			for(size_t i = 0; i < size; i++) {
				CHECK(receptionArray[i] == i );
			}
			resultPairLoc.second.release();
			// data should not be deleted when accessor goes out of scope
		}
		resultPair = SimplePool.getData(testStoreId);
		REQUIRE(resultPair.first == retval::CATCH_OK);
	}


	SECTION("Write tests") {
		result = SimplePool.addData(&testStoreId, testDataArray.data(), size);
		REQUIRE(result == retval::CATCH_OK);
		{
			auto resultPair = SimplePool.modifyData(testStoreId);
			REQUIRE(resultPair.first == retval::CATCH_OK);
			testDataArray[9] = 42;
			resultPair.second.write(testDataArray.data(), 10, 0);
			// now data should not be deleted
			resultPair.second.release();
		}
		auto resultConstPair = SimplePool.getData(testStoreId);
		REQUIRE(resultConstPair.first == retval::CATCH_OK);

		resultConstPair.second.getDataCopy(receptionArray.data(), 10);
		for(size_t i = 0; i < size-1; i++) {
			CHECK(receptionArray[i] == i );
		}
		CHECK(receptionArray[9] == 42 );

		auto resultPair = SimplePool.modifyData(testStoreId);
		REQUIRE(resultPair.first == retval::CATCH_OK);
		result = resultPair.second.write(testDataArray.data(), 20, 0);
		REQUIRE(result == retval::CATCH_FAILED);
		result = resultPair.second.write(testDataArray.data(), 10, 5);
		REQUIRE(result == retval::CATCH_FAILED);

		memset(testDataArray.data(), 42, 5);
		result = resultPair.second.write(testDataArray.data(), 5, 5);
		REQUIRE(result == retval::CATCH_OK);
		resultConstPair = SimplePool.getData(testStoreId);
		resultPair.second.getDataCopy(receptionArray.data(), 20);
		for(size_t i = 5; i < 10; i++) {
			CHECK(receptionArray[i] == 42 );
		}

	}
}