/*
 * Copyright 2017 Kuelap, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.mifos.individuallending.rest;

import io.mifos.anubis.annotation.AcceptedTokenType;
import io.mifos.anubis.annotation.Permittable;
import io.mifos.core.command.gateway.CommandGateway;
import io.mifos.core.lang.ServiceException;
import io.mifos.individuallending.api.v1.domain.product.LossProvisionStep;
import io.mifos.individuallending.internal.command.ChangeLossProvisionSteps;
import io.mifos.individuallending.internal.service.LossProvisionStepService;
import io.mifos.portfolio.api.v1.PermittableGroupIds;
import io.mifos.portfolio.service.internal.service.ProductService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

/**
 * @author Myrle Krantz
 */
@RestController
@RequestMapping("/individuallending/products/{productidentifier}/cases/lossprovisionsteps")
public class LossProvisionStepRestController {
  private final CommandGateway commandGateway;
  private final ProductService productService;
  private final LossProvisionStepService lossProvisionStepService;

  @Autowired
  public LossProvisionStepRestController(
      final CommandGateway commandGateway,
      final ProductService productService,
      final LossProvisionStepService lossProvisionStepService) {
    this.commandGateway = commandGateway;
    this.productService = productService;
    this.lossProvisionStepService = lossProvisionStepService;
  }

  @Permittable(value = AcceptedTokenType.TENANT, groupId = PermittableGroupIds.PRODUCT_LOSS_PROVISIONING_MANAGEMENT)
  @RequestMapping(
      method = RequestMethod.PUT,
      consumes = MediaType.ALL_VALUE,
      produces = MediaType.APPLICATION_JSON_VALUE)
  public @ResponseBody
  ResponseEntity<Void>
  setLossProvisionSteps(
      @PathVariable("productidentifier") final String productIdentifier,
      @RequestBody @Valid List<LossProvisionStep> lossProvisionSteps) {
    checkProductExists(productIdentifier);

    commandGateway.process(new ChangeLossProvisionSteps(productIdentifier, lossProvisionSteps));

    return new ResponseEntity<>(HttpStatus.ACCEPTED);
  }

  @Permittable(value = AcceptedTokenType.TENANT, groupId = PermittableGroupIds.PRODUCT_LOSS_PROVISIONING_MANAGEMENT)
  @RequestMapping(
      method = RequestMethod.GET,
      consumes = MediaType.ALL_VALUE,
      produces = MediaType.APPLICATION_JSON_VALUE
  )
  public @ResponseBody
  List<LossProvisionStep>
  getAllLossProvisionSteps(
      @PathVariable("productidentifier") final String productIdentifier) {
    checkProductExists(productIdentifier);

    return lossProvisionStepService.findByProductIdentifier(productIdentifier);
  }

  private void checkProductExists(@PathVariable("productidentifier") String productIdentifier) {
    productService.findByIdentifier(productIdentifier)
        .orElseThrow(() -> ServiceException.notFound("Product not found ''{0}''.", productIdentifier));
  }
}