package org.onap.vid.controllers;


import org.onap.portalsdk.core.controller.UnRestrictedBaseController;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.onap.vid.category.AddCategoryOptionResponse;
import org.onap.vid.category.AddCategoryOptionsRequest;
import org.onap.vid.category.CategoryParameterOptionRep;
import org.onap.vid.category.CategoryParametersResponse;
import org.onap.vid.model.CategoryParameter.Family;
import org.onap.vid.model.CategoryParameterOption;
import org.onap.vid.services.CategoryParameterService;
import org.onap.vid.services.CategoryParameterServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.ForbiddenException;
import java.util.Arrays;
import java.util.Collections;

import static org.onap.vid.utils.Logging.getMethodCallerName;

/**
 * Controler for APIs that are used only by vid operators
 */

@RestController
@RequestMapping(MaintenanceController.MAINTENANCE)
public class MaintenanceController extends UnRestrictedBaseController {

    public static final String MAINTENANCE = "maintenance";

    @Autowired
    protected CategoryParameterService categoryParameterService;
    private static final EELFLoggerDelegate LOGGER = EELFLoggerDelegate.getLogger(MaintenanceController.class);

    /**
     * Add list of options to one category parameter
     * @param request the request
     * @return the new option
     * @throws Exception the exception
     */
    @RequestMapping(value = "/category_parameter/{categoryName}", method = RequestMethod.POST)
    public ResponseEntity addCategoryOptions (
            HttpServletRequest request, @PathVariable String categoryName, @RequestBody AddCategoryOptionsRequest option) {
        debugStartLog();
        try {
            AddCategoryOptionResponse response = categoryParameterService.createCategoryParameterOptions(categoryName, option);
            HttpStatus httpStatus = response.getErrors().size()>0 ? HttpStatus.MULTI_STATUS : HttpStatus.OK;
            debugEndLog(response);
            return new ResponseEntity<>(response, httpStatus);
        }
        catch (CategoryParameterServiceImpl.UnfoundedCategoryException exception) {
            return new ResponseEntity<>(new AddCategoryOptionResponse(Collections.singletonList(exception.getMessage())), HttpStatus.NOT_FOUND);
        }
        catch (Exception exception) {
            LOGGER.error("failed to add option to parameter category " + categoryName, exception);
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    @RequestMapping(value = "/category_parameter/{categoryName}", method = RequestMethod.PUT)
    public ResponseEntity updateNameForOption (
            HttpServletRequest request, @PathVariable String categoryName, @RequestBody CategoryParameterOptionRep option) {
        debugStartLog();
        try {
            AddCategoryOptionResponse response = categoryParameterService.updateCategoryParameterOption(categoryName, option);
            HttpStatus httpStatus = response.getErrors().size()>0 ? HttpStatus.MULTI_STATUS : HttpStatus.OK;
            debugEndLog(response);
            return new ResponseEntity<>(response, httpStatus);
        }
        catch (ForbiddenException exception) {
            return new ResponseEntity<>(new AddCategoryOptionResponse(Collections.singletonList(exception.getMessage())), HttpStatus.FORBIDDEN);
        }
        catch (CategoryParameterServiceImpl.UnfoundedCategoryException|CategoryParameterServiceImpl.UnfoundedCategoryOptionException exception) {
            return new ResponseEntity<>(new AddCategoryOptionResponse(Collections.singletonList(exception.getMessage())), HttpStatus.NOT_FOUND);
        }
        catch (CategoryParameterServiceImpl.AlreadyExistOptionNameException exception) {
            return new ResponseEntity<>(new AddCategoryOptionResponse(Collections.singletonList(exception.getMessage())), HttpStatus.CONFLICT);
        }
        catch (Exception exception) {
            LOGGER.error("failed to update option to parameter category " + categoryName, exception);
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Gets the owning entity properties.
     * @param request the request
     * @return the property
     * @throws Exception the exception
     */
    @RequestMapping(value = "/category_parameter", method = RequestMethod.GET)
    public ResponseEntity getCategoryParameter(HttpServletRequest request, @RequestParam(value="familyName", required = true) Family familyName) {
        debugStartLog();
        try {
            CategoryParametersResponse response = categoryParameterService.getCategoryParameters(familyName);
            debugEndLog(response);
            return new ResponseEntity<>(response, HttpStatus.OK);
        }
        catch (Exception exception) {
            LOGGER.error("failed to retrieve category parameter list from DB.", exception);
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }


    /**
     * Delete option of the category.
     * @param request the request
     * @throws Exception the exception
     */
    @RequestMapping(value = "/delete_category_parameter/{categoryName}", method = RequestMethod.POST)
    public ResponseEntity deleteCategoryOption (
            HttpServletRequest request, @PathVariable String categoryName, @RequestBody CategoryParameterOption option) {
        debugStartLog();

        try {
            categoryParameterService.deleteCategoryOption(categoryName, option);
            debugEndLog(HttpStatus.OK);
            return new ResponseEntity<>(HttpStatus.OK);
        }
        catch (CategoryParameterServiceImpl.UnfoundedCategoryException exception) {
            return new ResponseEntity<>(new AddCategoryOptionResponse(Arrays.asList(exception.getMessage())), HttpStatus.NOT_FOUND);
        }
        catch (Exception exception) {
            LOGGER.error("failed to add/update owning entity option", exception);
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    private void debugStartLog() {
        LOGGER.debug(EELFLoggerDelegate.debugLogger, "start {}({})", getMethodCallerName());
    }

    private void debugEndLog(Object response) {
        LOGGER.debug(EELFLoggerDelegate.debugLogger, "end {}() => {}", getMethodCallerName(), response);
    }
}