package com.gpc.tams.util;

import com.gpc.tams.json.CheckPinpadResp;
import com.gpc.tams.json.SaleResp;
import com.gpc.tams.json.SaleErrorResp;
import com.gpc.tams.json.SaleReq;
import org.apache.commons.lang.ArrayUtils;
import org.apache.log4j.Logger;
import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.http.*;
import org.springframework.http.converter.json.MappingJacksonHttpMessageConverter;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.client.HttpClientErrorException;

import java.io.IOException;
import java.util.Arrays;

@Service
public class PasClient {
    private static final ObjectMapper mapper = new ObjectMapper();
    public static final String PAYMENT_URL = "http://localhost:14447/v1";
    public static final String SALE_ENDPOINT = "/transaction/sale";
    public static final String CHECK_PINPAD_ENDPOINT = "/pinpad";
    public static final String REVERSAL_ENDPOINT = "/transaction/reversal";
    public static final String REFUND_ENDPOINT = "/transaction/refund";
    public static final String BALANCE_ENDPOINT = "/transaction/inquiry";
    public static final String SIGNATURE_ENDPOINT = "/signature";
    public static final String SUBNET_PREFIX = "172.16.1";
    public static final String REQ_BODY = "Request Body: ";
    public static final String RESP_BODY = "Response Body: ";
    public static final String URL = "URL: ";
    public static final String X_COORELATION_ID = "x-correlation-id";
    public static final String CURRENCY_USD = "USD";

    public static final String NO_IMPLEMENTATION = "There is no implementation for the NAPA Payment - ";
    public static final String ERROR_CODE_1000 = "val-1000";
    public static final String ERROR_CODE_1001 = "val-1001";
    public static final String ERROR_CODE_1002 = "val-1002";
    public static final String ERROR_CODE_9000 = "val-9000";
    public static final String ERROR_CODE_9001 = "val-9001";

    private Logger logger;

    RestTemplate restTemplate;


    public PasClient() {
        restTemplate = new RestTemplate();
        MappingJacksonHttpMessageConverter converter = new MappingJacksonHttpMessageConverter();
        converter.setObjectMapper(new ObjectMapper());
        restTemplate.getMessageConverters().add(converter);
    }

    public ResponseEntity<String> post(String request, String url, String uuid) {
        log(REQ_BODY + request);
        log(URL + url);
        log(X_COORELATION_ID + uuid);
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
        headers.add(X_COORELATION_ID, uuid);
        HttpEntity<String> entity = new HttpEntity<String>(request, headers);
        try {
            ResponseEntity<String> response = restTemplate.postForEntity(url, entity, String.class);
            String resp = response.getBody();
            log(RESP_BODY + resp);
            return response;
        } catch (Exception e) {
            logError("post failed with status code", e);
            throw e;
        }
    }

    public String get(String url, String uuid) {
        log(URL + url);
        log(X_COORELATION_ID + uuid);
        HttpHeaders headers = new HttpHeaders();
        headers.add(X_COORELATION_ID, uuid);
        HttpEntity<String> entity = new HttpEntity<String>(headers);
        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.GET, entity, String.class);
        String resp = response.getBody();
        log(RESP_BODY + resp);
        return resp;
    }

    public void setLogger(Logger logger) {
        this.logger = logger;
    }

    public static boolean is2xxSuccessful(HttpStatus status) {
        int[] successfulCodes = {200, 201, 202};
        return ArrayUtils.contains(successfulCodes, status.value());
    }

    public static boolean isDisallowed(RefTenderType refTenderType, Integer[] disallowedRefTenderTypes) {
        if (ArrayUtils.isEmpty( disallowedRefTenderTypes )) { return false; }

        if (refTenderType == null)  {
            return true;
        }

        // there are two tender types - the general one - Credit/Debit/Gift
        // and the more specific ones:
        //
        //    Wright Express (credit/fleet card)
        //    Voyager (credit/fleet card)
        //    American Express (credit/amex)
        //    Mastercard (credit (or debit)/mastercard)
        //    Visa (credit (or debit)/visa)
        //    Discover (credit/discover)
        //
        //    The general tender type is returned explicitly in the PX message, but the more specific one isn't
        //    always obvious.
        //

        return (Arrays.asList(disallowedRefTenderTypes).contains(new Integer(refTenderType.getRefTenderTypeId())));

    }

    private void log(String mesg) {
        if (logger != null) {
            logger.info(mesg);
        }
    }

    private void logError(String mesg) {
        if (logger != null) {
            logger.error(mesg);
        }
    }

    private void logError(String mesg, Exception e) {
        if (logger != null) {
            logger.error(mesg, e);
        }
    }

}