/*
 * ERM_BU.cpp, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */
#include "StdInc.h"

#include "../scripting/ScriptFixture.h"

#include "../../lib/NetPacks.h"

namespace test
{
namespace scripting
{

using namespace ::testing;

class ERM_BU : public Test, public ScriptFixture
{
protected:
	void SetUp() override
	{
		ScriptFixture::setUp();
	}
};

class ERM_BU_C : public ERM_BU
{
protected:
	void doTest(std::optional<int> input, double output)
	{
		EXPECT_CALL(binfoMock, battleIsFinished()).WillOnce(Return(input));

		std::stringstream source;
		source << "VERM" << std::endl;
		source << "!?PI;" << std::endl;
		source << "!!BU:C?v851;" << std::endl;

		JsonNode actualState = runScript(VLC->scriptHandler->erm, source.str());

		SCOPED_TRACE("\n" + subject->code);

		EXPECT_EQ(actualState["ERM"]["v"]["851"], JsonUtils::floatNode(output)) << actualState.toJson(true);
	}
};

TEST_F(ERM_BU_C, Finished)
{
	doTest(std::make_optional(1), 1);
}

TEST_F(ERM_BU_C, NotFinished)
{
	doTest(std::nullopt, 0);
}

class ERM_BU_D : public ERM_BU
{
protected:
	void doTest(double output)
	{
		std::stringstream source;
		source << "VERM" << std::endl;
		source << "!?PI;" << std::endl;
		source << "!!BU:D75/?v1;" << std::endl;

		JsonNode actualState = runScript(VLC->scriptHandler->erm, source.str());

		SCOPED_TRACE("\n" + subject->code);

		EXPECT_EQ(actualState["ERM"]["v"]["1"], JsonUtils::floatNode(output)) << actualState.toJson(true);
	}
};

TEST_F(ERM_BU_D, EmptyField)
{
	EXPECT_CALL(binfoMock, battleGetUnitByPos(_,_)).WillOnce(Return(nullptr));
	doTest(-1);
}

TEST_F(ERM_BU_D, Alive)
{
	auto & unit = unitsFake.add(BattleSide::ATTACKER);
	EXPECT_CALL(binfoMock, battleGetUnitByPos(Eq(BattleHex(75)), Eq(false))).WillOnce(Return(&unit));
	EXPECT_CALL(unit, alive()).WillOnce(Return(true));
	doTest(-2);
}

TEST_F(ERM_BU_D, Dead)
{
	auto & unit = unitsFake.add(BattleSide::ATTACKER);
	EXPECT_CALL(binfoMock, battleGetUnitByPos(Eq(BattleHex(75)), Eq(false))).WillOnce(Return(&unit));
	EXPECT_CALL(unit, alive()).WillOnce(Return(false));
	EXPECT_CALL(unit, unitId()).WillOnce(Return(47));
	doTest(47);
}


class ERM_BU_E : public ERM_BU
{
protected:
	void doTest(double output)
	{
		std::stringstream source;
		source << "VERM" << std::endl;
		source << "!?PI;" << std::endl;
		source << "!!BU:E75/?v1;" << std::endl;

		JsonNode actualState = runScript(VLC->scriptHandler->erm, source.str());

		SCOPED_TRACE("\n" + subject->code);

		EXPECT_EQ(actualState["ERM"]["v"]["1"], JsonUtils::floatNode(output)) << actualState.toJson(true);
	}
};

TEST_F(ERM_BU_E, EmptyField)
{
	EXPECT_CALL(binfoMock, battleGetUnitByPos(_,_)).WillOnce(Return(nullptr));
	doTest(-1);
}

TEST_F(ERM_BU_E, Alive)
{
	auto & unit = unitsFake.add(BattleSide::ATTACKER);
	EXPECT_CALL(binfoMock, battleGetUnitByPos(Eq(BattleHex(75)), Eq(false))).WillOnce(Return(&unit));
	EXPECT_CALL(unit, alive()).WillOnce(Return(true));
	EXPECT_CALL(unit, unitId()).WillOnce(Return(47));
	doTest(47);
}

TEST_F(ERM_BU_E, Dead)
{
	auto & unit = unitsFake.add(BattleSide::ATTACKER);
	EXPECT_CALL(binfoMock, battleGetUnitByPos(Eq(BattleHex(75)), Eq(false))).WillOnce(Return(&unit));
	EXPECT_CALL(unit, alive()).WillOnce(Return(false));
	doTest(-1);
}


class ERM_BU_G : public ERM_BU
{

};

TEST_F(ERM_BU_G, Get)
{
	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:G?v1;" << std::endl;

	EXPECT_CALL(binfoMock, battleGetBattlefieldType()).WillOnce(Return(BattleField::fromString("snow_trees")));


	loadScript(VLC->scriptHandler->erm, source.str());
	runServer();

	JsonNode actualState = context->saveState();

	EXPECT_EQ(actualState["ERM"]["v"]["1"], JsonUtils::floatNode(-1)) << actualState.toJson(true);

}

TEST_F(ERM_BU_G, Get2)
{
	const int EXPECTED_ERM_FOG_CODE = 4;

	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:G?v1;" << std::endl;

	EXPECT_CALL(binfoMock, battleGetBattlefieldType()).WillOnce(Return(BattleField::fromString("evil_fog")));

	loadScript(VLC->scriptHandler->erm, source.str());
	runServer();

	JsonNode actualState = context->saveState();


	EXPECT_EQ(actualState["ERM"]["v"]["1"], JsonUtils::floatNode(EXPECTED_ERM_FOG_CODE)) << actualState.toJson(true);
}

//TODO: ERM_BU_G Set

class ERM_BU_M : public ERM_BU
{

};

TEST_F(ERM_BU_M, Simple)
{
	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:M^Test 1^;" << std::endl;

	auto checkApply = [&](BattleLogMessage * pack)
	{
		EXPECT_EQ(pack->lines.size(), 1);

		if(!pack->lines.empty())
		{
			EXPECT_EQ(pack->lines[0].toString(), "Test 1");
		}
	};

	EXPECT_CALL(serverMock, apply(Matcher<BattleLogMessage *>(_))).WillOnce(Invoke(checkApply));

	loadScript(VLC->scriptHandler->erm, source.str());
	runServer();
}

class ERM_BU_O : public ERM_BU
{

};

class ERM_BU_R : public ERM_BU
{

};

class ERM_BU_S : public ERM_BU
{

};

TEST_F(ERM_BU_S, Summon)
{
	const uint32_t UNIT_ID = 42;

	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:S^core:angel^/10/59/0/-1/0;" << std::endl;

	loadScript(VLC->scriptHandler->erm, source.str());

	auto checkApply = [&](BattleUnitsChanged * pack)
	{
		EXPECT_EQ(pack->changedStacks.size(), 1);

		if(!pack->changedStacks.empty())
		{
			UnitChanges & unit = pack->changedStacks.front();
			EXPECT_EQ(unit.id, UNIT_ID);
			EXPECT_EQ(unit.operation, BattleChanges::EOperation::ADD);

			JsonNode expected;
			expected["newUnitInfo"]["count"].Float() = 10;
			expected["newUnitInfo"]["type"].String() = "core:angel";
			expected["newUnitInfo"]["side"].Float() = 0;
			expected["newUnitInfo"]["position"].Float() = 59;
			expected["newUnitInfo"]["summoned"].Bool() = true;

			JsonComparer c(false);
			c.compare("newUnitInfo", unit.data, expected);
		}
	};

	EXPECT_CALL(binfoMock, battleNextUnitId()).WillOnce(Return(UNIT_ID));
	EXPECT_CALL(serverMock, apply(Matcher<BattleUnitsChanged *>(_))).WillOnce(Invoke(checkApply));

	runServer();
}

class ERM_BU_T : public ERM_BU
{

};

TEST_F(ERM_BU_T, NoTactics)
{
	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:T?v2;" << std::endl;

	loadScript(VLC->scriptHandler->erm, source.str());

	EXPECT_CALL(binfoMock, battleTacticDist()).WillOnce(Return(0));
	JsonNode actualState = runClientServer();

	EXPECT_EQ(actualState["ERM"]["v"]["2"], JsonUtils::floatNode(0)) << actualState.toJson(true);
}

TEST_F(ERM_BU_T, Tactics)
{
	std::stringstream source;
	source << "VERM" << std::endl;
	source << "!?PI;" << std::endl;
	source << "!!BU:T?v2;" << std::endl;

	loadScript(VLC->scriptHandler->erm, source.str());

	EXPECT_CALL(binfoMock, battleTacticDist()).WillOnce(Return(4));
	JsonNode actualState = runClientServer();

	EXPECT_EQ(actualState["ERM"]["v"]["2"], JsonUtils::floatNode(1)) << actualState.toJson(true);
}

class ERM_BU_V : public ERM_BU
{

};

}
}