/*
    * Copyright 2021-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware.common;
   
   import java.util.Collections;
   import java.util.Map;
   import java.util.Map.Entry;
  import java.util.Set;
  
  import oshi.hardware.LogicalVolumeGroup;
  
  public class AbstractLogicalVolumeGroup implements LogicalVolumeGroup {
  
      private final String name;
      private final Map<String, Set<String>> lvMap;
      private final Set<String> pvSet;
  
      /**
       * @param name  Name of the volume group
       * @param lvMap Logical volumes derived from this volume group and the physical volumes its mapped to.
       * @param pvSet Set of physical volumes this volume group consists of.
       */
      protected AbstractLogicalVolumeGroup(String name, Map<String, Set<String>> lvMap, Set<String> pvSet) {
          this.name = name;
          for (Entry<String, Set<String>> entry : lvMap.entrySet()) {
              lvMap.put(entry.getKey(), Collections.unmodifiableSet(entry.getValue()));
          }
          this.lvMap = Collections.unmodifiableMap(lvMap);
          this.pvSet = Collections.unmodifiableSet(pvSet);
      }
  
      @Override
      public String getName() {
          return name;
      }
  
      @Override
      public Map<String, Set<String>> getLogicalVolumes() {
          return lvMap;
      }
  
      @Override
      public Set<String> getPhysicalVolumes() {
          return pvSet;
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder("Logical Volume Group: ");
          sb.append(name).append("\n |-- PVs: ");
          sb.append(pvSet.toString());
          for (Entry<String, Set<String>> entry : lvMap.entrySet()) {
              sb.append("\n |-- LV: ").append(entry.getKey());
              Set<String> mappedPVs = entry.getValue();
              if (!mappedPVs.isEmpty()) {
                  sb.append(" --> ").append(mappedPVs);
              }
          }
          return sb.toString();
      }
  }