/*
    * Copyright 2019-2024 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.util;
   
   import java.util.Properties;
   
   import oshi.annotation.concurrent.NotThreadSafe;
  
  /**
   * The global configuration utility. See {@code src/main/resources/oshi.properties} for default values.
   * <p>
   * This class is not thread safe if methods manipulating the configuration are used. These methods are intended for use
   * by a single thread at startup, before instantiation of any other OSHI classes. OSHI does not guarantee re- reading of
   * any configuration changes.
   */
  @NotThreadSafe
  public final class GlobalConfig {
  
      private static final String OSHI_PROPERTIES = "oshi.properties";
  
      private static final Properties CONFIG = FileUtil.readPropertiesFromFilename(OSHI_PROPERTIES);
  
      public static final String OSHI_UTIL_MEMOIZER_EXPIRATION = "oshi.util.memoizer.expiration";
      public static final String OSHI_UTIL_WMI_TIMEOUT = "oshi.util.wmi.timeout";
      public static final String OSHI_UTIL_PROC_PATH = "oshi.util.proc.path";
      public static final String OSHI_UTIL_SYS_PATH = "oshi.util.sys.path";
      public static final String OSHI_UTIL_DEV_PATH = "oshi.util.dev.path";
  
      public static final String OSHI_PSEUDO_FILESYSTEM_TYPES = "oshi.pseudo.filesystem.types";
      public static final String OSHI_NETWORK_FILESYSTEM_TYPES = "oshi.network.filesystem.types";
  
      public static final String OSHI_OS_LINUX_ALLOWUDEV = "oshi.os.linux.allowudev";
      public static final String OSHI_OS_LINUX_PROCFS_LOGWARNING = "oshi.os.linux.procfs.logwarning";
  
      public static final String OSHI_OS_MAC_SYSCTL_LOGWARNING = "oshi.os.mac.sysctl.logwarning";
  
      public static final String OSHI_OS_WINDOWS_EVENTLOG = "oshi.os.windows.eventlog";
      public static final String OSHI_OS_WINDOWS_PROCSTATE_SUSPENDED = "oshi.os.windows.procstate.suspended";
      public static final String OSHI_OS_WINDOWS_COMMANDLINE_BATCH = "oshi.os.windows.commandline.batch";
      public static final String OSHI_OS_WINDOWS_HKEYPERFDATA = "oshi.os.windows.hkeyperfdata";
      public static final String OSHI_OS_WINDOWS_LOADAVERAGE = "oshi.os.windows.loadaverage";
      public static final String OSHI_OS_WINDOWS_CPU_UTILITY = "oshi.os.windows.cpu.utility";
  
      public static final String OSHI_OS_WINDOWS_PERFDISK_DIABLED = "oshi.os.windows.perfdisk.disabled";
      public static final String OSHI_OS_WINDOWS_PERFOS_DIABLED = "oshi.os.windows.perfos.disabled";
      public static final String OSHI_OS_WINDOWS_PERFPROC_DIABLED = "oshi.os.windows.perfproc.disabled";
  
      public static final String OSHI_OS_UNIX_WHOCOMMAND = "oshi.os.unix.whoCommand";
      public static final String OSHI_OS_SOLARIS_ALLOWKSTAT2 = "oshi.os.solaris.allowKstat2";
  
      private GlobalConfig() {
      }
  
      /**
       * Get the property associated with the given key.
       *
       * @param key The property key
       * @return The property value if it exists, or null otherwise
       */
      public static String get(String key) {
          return CONFIG.getProperty(key);
      }
  
      /**
       * Get the {@code String} property associated with the given key.
       *
       * @param key The property key
       * @param def The default value
       * @return The property value or the given default if not found
       */
      public static String get(String key, String def) {
          return CONFIG.getProperty(key, def);
      }
  
      /**
       * Get the {@code int} property associated with the given key.
       *
       * @param key The property key
       * @param def The default value
       * @return The property value or the given default if not found
       */
      public static int get(String key, int def) {
          String value = CONFIG.getProperty(key);
          return value == null ? def : ParseUtil.parseIntOrDefault(value, def);
      }
  
      /**
       * Get the {@code double} property associated with the given key.
       *
       * @param key The property key
       * @param def The default value
       * @return The property value or the given default if not found
       */
      public static double get(String key, double def) {
          String value = CONFIG.getProperty(key);
          return value == null ? def : ParseUtil.parseDoubleOrDefault(value, def);
      }
 
     /**
      * Get the {@code boolean} property associated with the given key.
      *
      * @param key The property key
      * @param def The default value
      * @return The property value or the given default if not found
      */
     public static boolean get(String key, boolean def) {
         String value = CONFIG.getProperty(key);
         return value == null ? def : Boolean.parseBoolean(value);
     }
 
     /**
      * Set the given property, overwriting any existing value. If the given value is {@code null}, the property is
      * removed.
      *
      * @param key The property key
      * @param val The new value
      */
     public static void set(String key, Object val) {
         if (val == null) {
             CONFIG.remove(key);
         } else {
             CONFIG.setProperty(key, val.toString());
         }
     }
 
     /**
      * Reset the given property to its default value.
      *
      * @param key The property key
      */
     public static void remove(String key) {
         CONFIG.remove(key);
     }
 
     /**
      * Clear the configuration.
      */
     public static void clear() {
         CONFIG.clear();
     }
 
     /**
      * Load the given {@link java.util.Properties} into the global configuration.
      *
      * @param properties The new properties
      */
     public static void load(Properties properties) {
         CONFIG.putAll(properties);
     }
 
     /**
      * Indicates that a configuration value is invalid.
      */
     public static class PropertyException extends RuntimeException {
 
         private static final long serialVersionUID = -7482581936621748005L;
 
         /**
          * @param property The property name
          */
         public PropertyException(String property) {
             super("Invalid property: \"" + property + "\" = " + GlobalConfig.get(property, null));
         }
 
         /**
          * @param property The property name
          * @param message  An exception message
          */
         public PropertyException(String property, String message) {
             super("Invalid property \"" + property + "\": " + message);
         }
     }
 }