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 PolybiusSquareControllerTest{
	@InjectMocks
	private PolybiusSquareController polybiusSquareController;
	//Fields
	private static final ObjectMapper mapper = new ObjectMapper();
	private static final ObjectNode blankNode = mapper.createObjectNode();
	private static final String POLYBIUS_INPUT_STRING = "B A-T";
	private static final String POLYBIUS_OUTPUT_STRING = "15 14-52";
	private static final String POLYBIUS_KEYWORD = "Z Y+ X-";
	private static final String POLYBIUS_NAME = "polybiusName";
	private static final String POLYBIUS_DESCRIPTION = "polybiusDescription";
	private static final List<String> POLYBIUS_EXPLANATION = List.of("PolybiusExplanation1", "PolybiusExplanation2", "PolybiusExplanation3");
	private static final List<String> POLYBIUS_FACTS = List.of("PolybiusFact1", "PolybiusFact2", "PolybiusFact3");


	@BeforeEach
	public void setup(){
		ReflectionTestUtils.setField(polybiusSquareController, "polybiusName", POLYBIUS_NAME);
		ReflectionTestUtils.setField(polybiusSquareController, "polybiusDescription", POLYBIUS_DESCRIPTION);
		ReflectionTestUtils.setField(polybiusSquareController, "polybiusExplanation", POLYBIUS_EXPLANATION);
		ReflectionTestUtils.setField(polybiusSquareController, "polybiusFacts", POLYBIUS_FACTS);
	}

	@Test
	public void tetGetCipherInfo(){
		ObjectNode infoNode = CipherInfoUtil.buildInfoNode(POLYBIUS_NAME, POLYBIUS_DESCRIPTION, POLYBIUS_EXPLANATION, POLYBIUS_FACTS);


		ObjectNode returnedJson = polybiusSquareController.getCipherInfo();


		assertEquals(infoNode, returnedJson);
	}

	@Test
	public void testEncodePolybius(){
		ObjectNode cipherParams = generateParams(POLYBIUS_KEYWORD, POLYBIUS_INPUT_STRING);


		ObjectNode returnedJson = polybiusSquareController.encodePolybius(cipherParams);


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

	@Test
	public void testEncodePolybius_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			polybiusSquareController.encodePolybius(blankNode);
		});
	}

	@Test
	public void testDecodePolybius(){
		ObjectNode cipherParams = generateParams(POLYBIUS_KEYWORD, POLYBIUS_OUTPUT_STRING);


		ObjectNode returnedJson = polybiusSquareController.decodePolybius(cipherParams);


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

	@Test
	public void testDecodePolybius_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			polybiusSquareController.decodePolybius(blankNode);
		});
	}

	private ObjectNode generateParams(String keyword, 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.KEYWORD, keyword);
		cipherParams.put(CipherParameterUtil.INPUT_STRING, inputString);

		return cipherParams;
	}
}