package com.mattrixwv.cipherstream.controller.monosubstitution;


import org.slf4j.MDC;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.fasterxml.jackson.databind.node.ObjectNode;
import com.mattrixwv.cipherstream.aspect.CipherStreamLoggingAspect;
import com.mattrixwv.cipherstream.monosubstitution.Caesar;
import com.mattrixwv.cipherstream.utils.CipherInfoUtil;
import com.mattrixwv.cipherstream.utils.CipherParameterUtil;

import lombok.extern.slf4j.Slf4j;


@Slf4j
@RestController
@RequestMapping("/cipherStream/caesar")
public class CaesarCipherController{
	@GetMapping
	public ObjectNode getCipherInfo(){
		MDC.put(CipherStreamLoggingAspect.CIPHER_NAME_LOGGING, CipherInfoUtil.CAESAR_CIPHER_NAME);
		log.info("Getting info for {}", CipherInfoUtil.CAESAR_CIPHER_NAME);


		return CipherInfoUtil.buildInfoNode(CipherInfoUtil.CAESAR_CIPHER_NAME, CipherInfoUtil.CAESAR_CIPHER_DESCRIPTION);
	}

	@PostMapping("/encode")
	public ObjectNode encodeCaesar(@RequestBody ObjectNode cipherParams){
		MDC.put(CipherStreamLoggingAspect.CIPHER_NAME_LOGGING, CipherInfoUtil.CAESAR_CIPHER_NAME);
		log.info("Encoding {}", CipherInfoUtil.CAESAR_CIPHER_NAME);


		CipherParameterUtil.verifyCaesarParams(cipherParams);
		boolean preserveCapitals = cipherParams.get(CipherParameterUtil.PRESERVE_CAPITALS).asBoolean();
		boolean preserveWhitespace = cipherParams.get(CipherParameterUtil.PRESERVE_WHITESPACE).asBoolean();
		boolean preserveSymbols = cipherParams.get(CipherParameterUtil.PRESERVE_SYMBOLS).asBoolean();
		int shiftAmount = cipherParams.get(CipherParameterUtil.CAESAR_SHIFT_AMOUNT).asInt();
		String inputString = cipherParams.get(CipherParameterUtil.INPUT_STRING).asText();


		Caesar caesar = new Caesar(preserveCapitals, preserveWhitespace, preserveSymbols);
		String outputString = caesar.encode(shiftAmount, inputString);

		cipherParams.put(CipherParameterUtil.OUTPUT_STRING, outputString);


		return cipherParams;
	}

	@PostMapping("/decode")
	public ObjectNode decodeCaesar(@RequestBody ObjectNode cipherParams){
		MDC.put(CipherStreamLoggingAspect.CIPHER_NAME_LOGGING, CipherInfoUtil.CAESAR_CIPHER_NAME);
		log.info("Decoding {}", CipherInfoUtil.CAESAR_CIPHER_NAME);


		CipherParameterUtil.verifyCaesarParams(cipherParams);
		boolean preserveCapitals = cipherParams.get(CipherParameterUtil.PRESERVE_CAPITALS).asBoolean();
		boolean preserveWhitespace = cipherParams.get(CipherParameterUtil.PRESERVE_WHITESPACE).asBoolean();
		boolean preserveSymbols = cipherParams.get(CipherParameterUtil.PRESERVE_SYMBOLS).asBoolean();
		int shiftAmount = cipherParams.get(CipherParameterUtil.CAESAR_SHIFT_AMOUNT).asInt();
		String inputString = cipherParams.get(CipherParameterUtil.INPUT_STRING).asText();

		Caesar caesar = new Caesar(preserveCapitals, preserveWhitespace, preserveSymbols);
		String outputString = caesar.decode(shiftAmount, inputString);

		cipherParams.put(CipherParameterUtil.OUTPUT_STRING, outputString);


		return cipherParams;
	}
}