package com.billpaymentservice.bbps.serviceImpl;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.modelmapper.ModelMapper;
import org.modelmapper.convention.MatchingStrategies;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import com.billpaymentservice.bbps.dto.GeneralResp;
import com.billpaymentservice.bbps.dto.MasterApiResponse;
import com.billpaymentservice.bbps.dto.ResponseModel;
import com.billpaymentservice.bbps.dto.request.BillerDetailRequest;
import com.billpaymentservice.bbps.dto.request.ContactMasterRequest;
import com.billpaymentservice.bbps.dto.request.CustomParamRequest;
import com.billpaymentservice.bbps.dto.request.MasterCategoryRequest;
import com.billpaymentservice.bbps.dto.request.MasterRequest;
import com.billpaymentservice.bbps.dto.response.AmountOptionsResponse;
import com.billpaymentservice.bbps.dto.response.BillerDataResponse;
import com.billpaymentservice.bbps.dto.response.BillerResponse;
import com.billpaymentservice.bbps.dto.response.ChannelsListResponse;
import com.billpaymentservice.bbps.dto.response.CustomParamResp;
import com.billpaymentservice.bbps.dto.response.CustomerParamGroupsResponse;
import com.billpaymentservice.bbps.dto.response.DispositionResponse;
import com.billpaymentservice.bbps.dto.response.PlaneCategoriesResponse;
import com.billpaymentservice.bbps.entites.BharatConnectMaster;
import com.billpaymentservice.bbps.entites.BillerDetails;
import com.billpaymentservice.bbps.entites.DispositionDetails;
import com.billpaymentservice.bbps.exception.CustomException;
import com.billpaymentservice.bbps.repository.BharatConnectMasterRepository;
import com.billpaymentservice.bbps.repository.BillerDataRepository;
import com.billpaymentservice.bbps.repository.DispositionRepository;
import com.billpaymentservice.bbps.repository.MerchantRepository;
import com.billpaymentservice.bbps.service.MasterDataService;
import com.billpaymentservice.bbps.util.BBPSConstant;
import com.billpaymentservice.bbps.util.EntityRelationshipUtil;
import com.billpaymentservice.bbps.util.Helper;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

@Service
public class MasterDataServiceImpl implements MasterDataService {

	private static final Logger LOGGER = LoggerFactory.getLogger(MasterDataServiceImpl.class);

	@Value("${master.data.url}")
	private String masterRegisterUrl;
	private final BharatConnectMasterRepository beneficiaryDetailsRepository;

	private MerchantRepository merchantRegisterRepo;
	private HttpClientApi httpClientApi;
	private final DispositionRepository dispositionRepository;
	private final Helper helper;
	private final BillerDataRepository billerDataRespository;
	private static final Logger log = LoggerFactory.getLogger(MasterDataServiceImpl.class);
	private final HttpService httpService;
	private final ObjectMapper objectMapper = new ObjectMapper();

	public MasterDataServiceImpl(MerchantRepository merchantRegisterRepo, HttpService httpService,
			HttpClientApi httpClientApi, Helper helper, BillerDataRepository billerDataRespository,
			DispositionRepository dispositionRepository, BharatConnectMasterRepository beneficiaryDetailsRepository) {
		this.merchantRegisterRepo = merchantRegisterRepo;
		this.httpService = httpService;
		this.httpClientApi = httpClientApi;
		this.helper = helper;
		this.billerDataRespository = billerDataRespository;
		this.dispositionRepository = dispositionRepository;
		this.beneficiaryDetailsRepository = beneficiaryDetailsRepository;

	}

	@Override
	public ResponseModel getMasterData(MasterRequest masterRequest) {
		LOGGER.info("Request DTO: {}", masterRequest);

		try {
			BharatConnectMaster headersData = beneficiaryDetailsRepository.findByOrgId("ORG001");
			log.info("ResPONSE" + headersData);
			if (headersData == null) {
				ResponseModel responseModel = new ResponseModel("Tenant Id Is Null", "Not Found",
						BBPSConstant.BADREQUEST, headersData);
				return responseModel;
			}
			String fullUrl = masterRegisterUrl + BBPSConstant.MASTER_CATEGORY_URL + headersData.getTenantId();
			LOGGER.info("Calling external API: {}", fullUrl);

			Map<String, String> responseMap = httpService.getRequest(fullUrl);
			String responseData = responseMap.get("data");
			LOGGER.info("Response Data: {}", responseData);

			ObjectMapper objectMapper = new ObjectMapper();
			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			// ✅ Same check as in getBillerByBillerId()
			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode
						String.valueOf(dataMap.get("remarks")) // remarks
				);
			}

			MasterApiResponse responseWrapper = objectMapper.convertValue(dataMap, MasterApiResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}
	}

	@Override
	public ResponseModel getBillerByBillerId(BillerDetailRequest billerDetailRequest) {

		String billerId = billerDetailRequest.getBillerId();
		String fullUrl = masterRegisterUrl + BBPSConstant.BILLER_DATA_FETCH_URL + billerId;

		Map<String, String> responseMap = httpService.getRequest(fullUrl);
		String responseData = responseMap.get("data");
		log.info("data is :{}", responseData);

		ObjectMapper objectMapper = new ObjectMapper();

		try {
			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});
			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}
			BillerDataResponse responseWrapper = objectMapper.convertValue(dataMap, BillerDataResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();
			ModelMapper mapper = new ModelMapper();
			mapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
			BillerDetails entity = mapper.map(responseWrapper.getBillerDAO(), BillerDetails.class);
			EntityRelationshipUtil.linkBillerRelationships(entity);
			// billerDataRespository.save(entity);
			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);
			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}
	}

	@Override
	public ResponseModel getCustomerParamByBillerId(CustomParamRequest customerParamRequest) {

		try {

			String billerId = customerParamRequest.getBillerId();
			String fullUrl = masterRegisterUrl + BBPSConstant.CUSTOMPARAM_URL + billerId;

			Map<String, String> responseMap = httpService.getRequest(fullUrl);
			String responseData = responseMap.get("data");
			log.info("data is :{}", responseData);

			ObjectMapper objectMapper = new ObjectMapper();

			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});
			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			CustomParamResp responseWrapper = objectMapper.convertValue(dataMap, CustomParamResp.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;
		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}

	}

	@Override
	public ResponseModel getContactMaster(ContactMasterRequest contactMasterRequest) {

		return new ResponseModel();
	}

	@Override
	public ResponseModel fetchMasterDataCategoryWise(MasterCategoryRequest masterRequest) {
		LOGGER.info("Fetching Master Data Category-wise " + masterRequest);

		try {

			String validateMerchant = helper.validateMerchant(masterRequest);

			if (!"Valid".equalsIgnoreCase(validateMerchant)) {
				LOGGER.warn("Merchant validation failed: {}", validateMerchant);
				return new ResponseModel("Merchant validation failed", validateMerchant, BBPSConstant.BADREQUEST, null);
			}

			String fullUrl = String.format("%s%s?billerName=%s&category=%s&page=%d&pagesize=%d", masterRegisterUrl,
					BBPSConstant.BILLER_URL, masterRequest.getBillerName(), masterRequest.getCategory(),
					masterRequest.getPageStart(), masterRequest.getPageEnd());

			Map<String, String> responseMap = httpService.getRequest(fullUrl);
			String responseData = responseMap.get("data");
			LOGGER.info("Response Data: {}", responseData);

			ObjectMapper objectMapper = new ObjectMapper();

			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			// ✅ Same check as in getBillerByBillerId()
			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode
						String.valueOf(dataMap.get("remarks")) // remarks
				);
			}

			BillerResponse responseWrapper = objectMapper.convertValue(dataMap, BillerResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;
		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}

	}

	@Override
	public ResponseModel getDispositionDetails() {
		String fullUrl = masterRegisterUrl + BBPSConstant.DISPOSTION_URL;
		Map<String, String> responseMap = httpService.getRequest(fullUrl);
		String responseData = responseMap.get("data");

		ObjectMapper objectMapper = new ObjectMapper();

		try {
			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});
			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			DispositionResponse responseWrapper = objectMapper.convertValue(dataMap, DispositionResponse.class);
			System.out.println(responseWrapper);
			GeneralResp generalResp = responseWrapper.getGeneralResp();
			ModelMapper mapper = new ModelMapper();
			mapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
			List<DispositionDetails> entities = responseWrapper.getDispositionsList().stream()
					.map(dto -> mapper.map(dto, DispositionDetails.class)).collect(Collectors.toList());

			System.out.println(entities);

			if (entities != null) {
				dispositionRepository.saveAll(entities);
			} else {
				LOGGER.warn("No disposition found in response to save.");
			}

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;
		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}

	}

	@Override
	public ResponseModel fetchCustomerParamGroup(BillerDetailRequest requestModel) {
		LOGGER.info("Fetching Master Data Category-wise for MID={}", requestModel.getMid());

		try {

			String validateMerchant = helper.validateMerchant(requestModel);

			if (!"Valid".equalsIgnoreCase(validateMerchant)) {
				LOGGER.warn("Merchant validation failed: {}", validateMerchant);
				return new ResponseModel("Merchant validation failed", validateMerchant, BBPSConstant.BADREQUEST, null);
			}

			String fullUrl = masterRegisterUrl + BBPSConstant.CUSTOMER_PARAM_GROUP + requestModel.getBillerId();
			// LOGGER.info("Calling Master API: {}", fullUrl);

			Map<String, String> apiResponse = httpService.getRequest(fullUrl);
			String responseData = apiResponse.get("data").toString();
			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			CustomerParamGroupsResponse responseWrapper = objectMapper.convertValue(dataMap,
					CustomerParamGroupsResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		}

	}

	@Override
	public ResponseModel fetchAllMasterAmountOption(BillerDetailRequest requestModel) {
		LOGGER.info("Fetching Master Data Amount List for MID={}", requestModel.getMid());
		try {
			String validateMerchant = helper.validateMerchant(requestModel);

			if (!"Valid".equalsIgnoreCase(validateMerchant)) {
				LOGGER.warn("Merchant validation failed: {}", validateMerchant);
				return new ResponseModel("Merchant validation failed", validateMerchant, BBPSConstant.BADREQUEST, null);
			}

			String fullUrl = masterRegisterUrl + BBPSConstant.AMOUNT_OPTIONS + requestModel.getBillerId();
			// LOGGER.info("Calling Master API: {}", fullUrl);

			Map<String, String> apiResponse = httpService.getRequest(fullUrl);
			log.info("Response" + apiResponse);
			String responseData = apiResponse.get("data").toString();

			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			AmountOptionsResponse responseWrapper = objectMapper.convertValue(dataMap, AmountOptionsResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		} catch (CustomException e) {
			LOGGER.error("Custom Exception: {}", e.getMessage());
			throw e; // Rethrow custom exceptions to be handled by the controller
		}
	}

	@Override
	public ResponseModel fetchPlanCategorie(BillerDetailRequest requestModel) {
		LOGGER.info("Fetching Master Data Amount List for MID={}", requestModel.getMid());
		try {
			String validateMerchant = helper.validateMerchant(requestModel);

			if (!"Valid".equalsIgnoreCase(validateMerchant)) {
				LOGGER.warn("Merchant validation failed: {}", validateMerchant);
				return new ResponseModel("Merchant validation failed", validateMerchant, BBPSConstant.BADREQUEST, null);
			}

			String fullUrl = masterRegisterUrl + BBPSConstant.PLAN_CATEGORIES + requestModel.getBillerId();
			// LOGGER.info("Calling Master API: {}", fullUrl);

			Map<String, String> apiResponse = httpService.getRequest(fullUrl);
			log.info("Response" + apiResponse);
			String responseData = apiResponse.get("data").toString();

			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			PlaneCategoriesResponse responseWrapper = objectMapper.convertValue(dataMap, PlaneCategoriesResponse.class);
			GeneralResp generalResp = responseWrapper.getGeneralResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		} catch (CustomException e) {
			LOGGER.error("Custom Exception: {}", e.getMessage());
			throw e; // Rethrow custom exceptions to be handled by the controller
		}
	}

	@Override
	public ResponseModel fetchInitiatingChannel(BillerDetailRequest requestModel) {
		LOGGER.info("Fetching Initiating Channel List for MID={}", requestModel.getMid());
		try {
			String validateMerchant = helper.validateMerchant(requestModel);

			if (!"Valid".equalsIgnoreCase(validateMerchant)) {
				LOGGER.warn("Merchant validation failed: {}", validateMerchant);
				return new ResponseModel("Merchant validation failed", validateMerchant, BBPSConstant.BADREQUEST, null);
			}

			String fullUrl = masterRegisterUrl + BBPSConstant.INITIATING_CHANNEL;
			LOGGER.info("Calling Master API: {}", fullUrl);

			Map<String, String> apiResponse = httpService.getRequest(fullUrl);
			log.info("Response" + apiResponse);
			String responseData = apiResponse.get("data").toString();

			Map<String, Object> dataMap = objectMapper.readValue(responseData,
					new TypeReference<Map<String, Object>>() {
					});

			if (!dataMap.containsKey("generalResp")) {
				throw new CustomException(String.valueOf(dataMap.get("message")), // message
						String.valueOf(dataMap.get("status")), // status
						Integer.parseInt(String.valueOf(dataMap.get("statusCode"))), // statusCode (int)
						String.valueOf(dataMap.get("remarks")));
			}

			ChannelsListResponse responseWrapper = objectMapper.convertValue(dataMap, ChannelsListResponse.class);
			GeneralResp generalResp = responseWrapper.getGenericResp();

			ResponseModel responseModel = new ResponseModel(generalResp.getMessage(), generalResp.getStatus(),
					Integer.parseInt(generalResp.getStatusCode()), responseWrapper);

			return responseModel;

		} catch (JsonProcessingException e) {
			log.error("Error parsing responseData JSON: {}", e.getMessage());
			throw new CustomException("Invalid JSON received from API");
		} catch (CustomException e) {
			LOGGER.error("Custom Exception: {}", e.getMessage());
			throw e; // Rethrow custom exceptions to be handled by the controller
		}
	}

}