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.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.mattrixwv.cipherstream.exception.InvalidCipherParameterException;
import com.mattrixwv.cipherstream.utils.CipherInfoUtil;
import com.mattrixwv.cipherstream.utils.CipherParameterUtil;


@Tag("unit-test")
@ExtendWith(MockitoExtension.class)
public class OneTimePadCipherControllerTest{
	@InjectMocks
	private OneTimePadCipherController oneTimePadCipherController;
	//Fields
	private static final ObjectMapper mapper = new ObjectMapper();
	private static final ObjectNode blankNode = mapper.createObjectNode();
	private static final String ONE_TIME_PAD_KEYWORD = "keywordThatIsTotallyRandom";
	private static final String ONE_TIME_PAD_INPUT_STRING = "Message to^encode";
	private static final String ONE_TIME_PAD_OUTPUT_STRING = "Wiqooxh mv^egkgws";
	private static final String oneTimePadName = "oneTimePadName";
	private static final String oneTimePadDescription = "oneTimePadDescription";
	private static final List<String> oneTimePadExplanation = List.of("oneTimePadExplanation1", "oneTimePadExplanation2", "oneTimePadExplanation3");
	private static final List<String> oneTimePadFacts = List.of("oneTimePadFact1", "oneTimePadFact2", "oneTimePadFact3");


	@BeforeEach
	public void setup(){
		ReflectionTestUtils.setField(oneTimePadCipherController, "oneTimePadName", oneTimePadName);
		ReflectionTestUtils.setField(oneTimePadCipherController, "oneTimePadDescription", oneTimePadDescription);
		ReflectionTestUtils.setField(oneTimePadCipherController, "oneTimePadExplanation", oneTimePadExplanation);
		ReflectionTestUtils.setField(oneTimePadCipherController, "oneTimePadFacts", oneTimePadFacts);
	}

	@Test
	public void tetGetCipherInfo(){
		ObjectNode infoNode = CipherInfoUtil.buildInfoNode(oneTimePadName, oneTimePadDescription, oneTimePadExplanation, oneTimePadFacts);


		ObjectNode returnedJson = oneTimePadCipherController.getCipherInfo();


		assertEquals(infoNode, returnedJson);
	}

	@Test
	public void testEncodeOneTimePad(){
		ObjectNode cipherParams = generateParams(ONE_TIME_PAD_KEYWORD, ONE_TIME_PAD_INPUT_STRING);


		ObjectNode returnedJson = oneTimePadCipherController.encodeOneTimePad(cipherParams);


		assertEquals(cipherParams, returnedJson);
		assertEquals(ONE_TIME_PAD_OUTPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asText());
	}

	@Test
	public void testEncodeOneTimePad_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			oneTimePadCipherController.encodeOneTimePad(blankNode);
		});
	}

	@Test
	public void testDecodeOneTimePad(){
		ObjectNode cipherParams = generateParams(ONE_TIME_PAD_KEYWORD, ONE_TIME_PAD_OUTPUT_STRING);


		ObjectNode returnedJson = oneTimePadCipherController.decodeOneTimePad(cipherParams);


		assertEquals(cipherParams, returnedJson);
		assertEquals(ONE_TIME_PAD_INPUT_STRING, returnedJson.get(CipherParameterUtil.OUTPUT_STRING).asText());
	}

	@Test
	public void testDecodeOneTimePad_invalidParameter(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			oneTimePadCipherController.decodeOneTimePad(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;
	}
}