package com.mattrixwv.cipherstream.controller.polysubstitution;


import static org.junit.jupiter.api.Assertions.*;

import java.util.List;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.junit.jupiter.MockitoExtension;
import org.springframework.test.util.ReflectionTestUtils;

import com.mattrixwv.cipherstream.exception.InvalidCipherParameterException;
import com.mattrixwv.cipherstream.utils.CipherInfoUtil;
import com.mattrixwv.cipherstream.utils.CipherParameterUtil;

import tools.jackson.databind.ObjectMapper;
import tools.jackson.databind.node.ObjectNode;


@Tag("unit-test")
@ExtendWith(MockitoExtension.class)
public class RailFenceControllerTest{
	@InjectMocks
	private RailFenceController railFenceController;
	//Fields
	private static final ObjectMapper mapper = new ObjectMapper();
	private static final ObjectNode blankNode = mapper.createObjectNode();
	private static final String RAIL_FENCE_INPUT_STRING = "Message to^encode";
	private static final String RAIL_FENCE_OUTPUT_STRING = "Moetese ne^sgcdao";
	private static final int RAIL_FENCE_RAILS = 5;
	private static final String RAIL_FENCE_NAME = "railFenceName";
	private static final String RAIL_FENCE_DESCRIPTION = "railFenceDescription";
	private static final List<String> RAIL_FENCE_EXPLANATION = List.of("railFenceExplanation1", "railFenceExplanation2", "railFenceExplanation3");
	private static final List<String> RAIL_FENCE_FACTS = List.of("railFenceFact1", "railFenceFact2", "railFenceFact3");


	@BeforeEach
	public void setup(){
		ReflectionTestUtils.setField(railFenceController, "railFenceName", RAIL_FENCE_NAME);
		ReflectionTestUtils.setField(railFenceController, "railFenceDescription", RAIL_FENCE_DESCRIPTION);
		ReflectionTestUtils.setField(railFenceController, "railFenceExplanation", RAIL_FENCE_EXPLANATION);
		ReflectionTestUtils.setField(railFenceController, "railFenceFacts", RAIL_FENCE_FACTS);
	}


	@Test
	public void tetGetCipherInfo(){
		ObjectNode infoNode = CipherInfoUtil.buildInfoNode(RAIL_FENCE_NAME, RAIL_FENCE_DESCRIPTION, RAIL_FENCE_EXPLANATION, RAIL_FENCE_FACTS);


		ObjectNode returnedJson = railFenceController.getCipherInfo();


		assertEquals(infoNode, returnedJson);
	}

	@Test
	public void testEncodeRailFence(){
		ObjectNode cipherParams = generateParams(RAIL_FENCE_RAILS, RAIL_FENCE_INPUT_STRING);


		ObjectNode returnedJson = railFenceController.encodeRailFence(cipherParams);


		assertEquals(cipherParams, returnedJson);
		assertEquals(RAIL_FENCE_OUTPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asString());
	}

	@Test
	public void testEncodeRailFence_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			railFenceController.encodeRailFence(blankNode);
		});
	}

	@Test
	public void testDecodeRailFence(){
		ObjectNode cipherParams = generateParams(RAIL_FENCE_RAILS, RAIL_FENCE_OUTPUT_STRING);


		ObjectNode returnedJson = railFenceController.decodeRailFence(cipherParams);


		assertEquals(cipherParams, returnedJson);
		assertEquals(RAIL_FENCE_INPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asString());
	}

	@Test
	public void testDecodeRailFence_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			railFenceController.encodeRailFence(blankNode);
		});
	}

	private ObjectNode generateParams(int rails, String inputString){
		ObjectNode cipherParams = mapper.createObjectNode();

		cipherParams.put(CipherParameterUtil.PRESERVE_CAPITALS, true);
		cipherParams.put(CipherParameterUtil.PRESERVE_WHITESPACE, true);
		cipherParams.put(CipherParameterUtil.PRESERVE_SYMBOLS, true);
		cipherParams.put(CipherParameterUtil.RAIL_FENCE_RAILS, rails);
		cipherParams.put(CipherParameterUtil.INPUT_STRING, inputString);

		return cipherParams;
	}
}