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/*
 * Copyright 2017 Google, 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 com.netflix.spinnaker.halyard.controllers.v1.ci;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.netflix.spinnaker.halyard.config.config.v1.HalconfigDirectoryStructure;
import com.netflix.spinnaker.halyard.config.config.v1.HalconfigParser;
import com.netflix.spinnaker.halyard.config.model.v1.node.CIAccount;
import com.netflix.spinnaker.halyard.config.model.v1.node.Ci;
import com.netflix.spinnaker.halyard.config.model.v1.node.Cis;
import com.netflix.spinnaker.halyard.config.model.v1.node.Halconfig;
import com.netflix.spinnaker.halyard.config.services.v1.ci.CiService;
import com.netflix.spinnaker.halyard.core.tasks.v1.DaemonTask;
import com.netflix.spinnaker.halyard.models.v1.ValidationSettings;
import com.netflix.spinnaker.halyard.util.v1.GenericDeleteRequest;
import com.netflix.spinnaker.halyard.util.v1.GenericEnableDisableRequest;
import com.netflix.spinnaker.halyard.util.v1.GenericGetRequest;
import com.netflix.spinnaker.halyard.util.v1.GenericUpdateRequest;
import java.util.List;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.*;

public abstract class CiController> {
  protected final ObjectMapper objectMapper = new ObjectMapper();
  private final CiService ciService;

  @Component
  @RequiredArgsConstructor
  public static class Members {
    private final HalconfigParser halconfigParser;
    private final HalconfigDirectoryStructure halconfigDirectoryStructure;
  }

  public CiController(Members members, CiService ciService) {
    this.halconfigParser = members.halconfigParser;
    this.halconfigDirectoryStructure = members.halconfigDirectoryStructure;
    this.ciService = ciService;
  }

  private final HalconfigParser halconfigParser;
  private final HalconfigDirectoryStructure halconfigDirectoryStructure;

  @RequestMapping(value = "/", method = RequestMethod.GET)
  DaemonTask ci(
      @PathVariable String deploymentName, @ModelAttribute ValidationSettings validationSettings) {
    return GenericGetRequest.builder()
        .getter(() -> ciService.getCi(deploymentName))
        .validator(() -> ciService.validateCi(deploymentName))
        .description("Get " + ciService.ciName() + " ci")
        .build()
        .execute(validationSettings);
  }

  @RequestMapping(value = "/", method = RequestMethod.PUT)
  DaemonTask setCi(
      @PathVariable String deploymentName,
      @ModelAttribute ValidationSettings validationSettings,
      @RequestBody Object rawCi) {
    Ci ci = objectMapper.convertValue(rawCi, Cis.translateCiType(ciService.ciName()));
    return GenericUpdateRequest.builder(halconfigParser)
        .stagePath(halconfigDirectoryStructure.getStagingPath(deploymentName))
        .updater(c -> ciService.setCi(deploymentName, c))
        .validator(() -> ciService.validateCi(deploymentName))
        .description("Edit " + ciService.ciName() + " settings")
        .build()
        .execute(validationSettings, ci);
  }

  @RequestMapping(value = "/enabled", method = RequestMethod.PUT)
  DaemonTask setEnabled(
      @PathVariable String deploymentName,
      @ModelAttribute ValidationSettings validationSettings,
      @RequestBody boolean enabled) {
    return GenericEnableDisableRequest.builder(halconfigParser)
        .updater(e -> ciService.setEnabled(deploymentName, e))
        .validator(() -> ciService.validateCi(deploymentName))
        .description("Edit " + ciService.ciName() + " settings")
        .build()
        .execute(validationSettings, enabled);
  }

  @RequestMapping(value = "/masters", method = RequestMethod.GET)
  DaemonTask> masters(
      @PathVariable String deploymentName, @ModelAttribute ValidationSettings validationSettings) {
    return GenericGetRequest.>builder()
        .getter(() -> ciService.getAllMasters(deploymentName))
        .validator(() -> ciService.validateAllMasters(deploymentName))
        .description("Get all masters for " + ciService.ciName())
        .build()
        .execute(validationSettings);
  }

  @RequestMapping(value = "/masters/{masterName:.+}", method = RequestMethod.GET)
  DaemonTask master(
      @PathVariable String deploymentName,
      @PathVariable String masterName,
      @ModelAttribute ValidationSettings validationSettings) {
    return GenericGetRequest.builder()
        .getter(() -> ciService.getCiMaster(deploymentName, masterName))
        .validator(() -> ciService.validateMaster(deploymentName, masterName))
        .description("Get the " + masterName + " master")
        .build()
        .execute(validationSettings);
  }

  @RequestMapping(value = "/masters/{masterName:.+}", method = RequestMethod.DELETE)
  DaemonTask deleteMaster(
      @PathVariable String deploymentName,
      @PathVariable String masterName,
      @ModelAttribute ValidationSettings validationSettings) {
    return GenericDeleteRequest.builder(halconfigParser)
        .stagePath(halconfigDirectoryStructure.getStagingPath(deploymentName))
        .deleter(() -> ciService.deleteMaster(deploymentName, masterName))
        .validator(() -> ciService.validateAllMasters(deploymentName))
        .description("Delete the " + masterName + " master")
        .build()
        .execute(validationSettings);
  }

  @RequestMapping(value = "/masters/{masterName:.+}", method = RequestMethod.PUT)
  DaemonTask setMaster(
      @PathVariable String deploymentName,
      @PathVariable String masterName,
      @ModelAttribute ValidationSettings validationSettings,
      @RequestBody Object rawMaster) {
    T account = ciService.convertToAccount(rawMaster);
    return GenericUpdateRequest.builder(halconfigParser)
        .stagePath(halconfigDirectoryStructure.getStagingPath(deploymentName))
        .updater(m -> ciService.setMaster(deploymentName, masterName, m))
        .validator(() -> ciService.validateMaster(deploymentName, account.getName()))
        .description("Edit the " + masterName + " master")
        .build()
        .execute(validationSettings, account);
  }

  @RequestMapping(value = "/masters", method = RequestMethod.POST)
  DaemonTask addMaster(
      @PathVariable String deploymentName,
      @ModelAttribute ValidationSettings validationSettings,
      @RequestBody Object rawMaster) {
    T account = ciService.convertToAccount(rawMaster);
    return GenericUpdateRequest.builder(halconfigParser)
        .stagePath(halconfigDirectoryStructure.getStagingPath(deploymentName))
        .updater(m -> ciService.addMaster(deploymentName, m))
        .validator(() -> ciService.validateMaster(deploymentName, account.getName()))
        .description("Add the " + account.getName() + " master")
        .build()
        .execute(validationSettings, account);
  }
}