package com.mattrixwv.cipherstream.controller.monosubstitution;


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

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 BaconianCipherControllerTest{
	@InjectMocks
	private BaconianCipherController baconianCipherController;
	//Fields
	private static final ObjectMapper mapper = new ObjectMapper();
	private static final String BACONIAN_INPUT_STRING = "Message to-encode";
	private static final String BACONIAN_OUTPUT_STRING = "ABABB aabaa baaab baaab aaaaa aabba aabaa baaba abbab aabaa abbaa aaaba abbab aaabb aabaa";
	private static final String BACONIAN_DECODED_STRING = "Messagetoencode";
	private static final ObjectNode blankNode = mapper.createObjectNode();
	private static final String baconianName = "baconianName";
	private static final String baconianDescription = "baconianDescription";


	@BeforeEach
	public void setup(){
		ReflectionTestUtils.setField(baconianCipherController, "baconianName", baconianName);
		ReflectionTestUtils.setField(baconianCipherController, "baconianDescription", baconianDescription);
	}


	@Test
	public void tetGetCipherInfo(){
		ObjectNode infoNode = CipherInfoUtil.buildInfoNode(baconianName, baconianDescription);


		ObjectNode returnedJson = baconianCipherController.getCipherInfo();


		assertEquals(infoNode, returnedJson);
	}

	@Test
	public void testEncodeBaconian(){
		ObjectNode cipherParams = generateParams(BACONIAN_INPUT_STRING);


		ObjectNode returnedJson = baconianCipherController.encodeBaconian(cipherParams);


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

	@Test
	public void testEncodeBaconian_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			baconianCipherController.encodeBaconian(blankNode);
		});
	}

	@Test
	public void testDecodeBaconian(){
		ObjectNode cipherParams = generateParams(BACONIAN_OUTPUT_STRING);


		ObjectNode returnedJson = baconianCipherController.decodeBaconian(cipherParams);


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

	@Test
	public void testDecodeBaconian_invalidParameters(){
		assertThrows(InvalidCipherParameterException.class, () -> {
			baconianCipherController.decodeBaconian(blankNode);
		});
	}

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

		cipherParams.put(CipherParameterUtil.PRESERVE_CAPITALS, true);
		cipherParams.put(CipherParameterUtil.INPUT_STRING, inputString);

		return cipherParams;
	}
}