package com.mattrixwv.cipherstream.controller.monosubstitution;


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 AtbashCipherControllerTest{
	@InjectMocks
	private AtbashCipherController atbashCipherController;
	//Fields
	private static final ObjectMapper mapper = new ObjectMapper();
	private static final ObjectNode blankNode = mapper.createObjectNode();
	private static final String ATBASH_INPUT_STRING = "Message to^encode";
	private static final String ATBASH_OUTPUT_STRING = "Nvhhztv gl^vmxlwv";
	private static final String atbashName = "atbashName";
	private static final String atbashDescription = "atbashDescription";
	private static final List<String> atbashExplanation = List.of("atbashExplanation1", "atbashExplanation2", "atbashExplanation3");
	private static final List<String> atbashFacts = List.of("atbashFact1", "atbashFact2", "atbashFact3");


	@BeforeEach
	public void setup(){
		ReflectionTestUtils.setField(atbashCipherController, "atbashName", atbashName);
		ReflectionTestUtils.setField(atbashCipherController, "atbashDescription", atbashDescription);
		ReflectionTestUtils.setField(atbashCipherController, "atbashExplanation", atbashExplanation);
		ReflectionTestUtils.setField(atbashCipherController, "atbashFacts", atbashFacts);
	}


	@Test
	public void testGetCipherInfo(){
		ObjectNode infoNode = CipherInfoUtil.buildInfoNode(atbashName, atbashDescription, atbashExplanation, atbashFacts);


		ObjectNode returnedJson = atbashCipherController.getCipherInfo();


		assertEquals(infoNode, returnedJson);
	}

	@Test
	public void testEncodeAtbash(){
		ObjectNode cipherParams = generateParams(ATBASH_INPUT_STRING);

		ObjectNode returnedJson = atbashCipherController.encodeAtbash(cipherParams);

		assertEquals(cipherParams, returnedJson);
		assertEquals(ATBASH_OUTPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asString());
	}
	@Test
	public void testEncodeAtbash_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			atbashCipherController.encodeAtbash(blankNode);
		});
	}

	@Test
	public void testDecodeAtbash(){
		ObjectNode cipherParams = generateParams(ATBASH_OUTPUT_STRING);

		ObjectNode returnedJson = atbashCipherController.decodeAtbash(cipherParams);

		assertEquals(cipherParams, returnedJson);
		assertEquals(ATBASH_INPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asString());
	}
	@Test
	public void testDecodeAtbash_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			atbashCipherController.decodeAtbash(blankNode);
		});
	}

	private ObjectNode generateParams(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.INPUT_STRING, inputString);

		return cipherParams;
	}
}