"use strict";

function Level(level, levelStr) {
  this.level = level;
  this.levelStr = levelStr;
}

/**
 * converts given String to corresponding Level
 * @param {String} sArg String value of Level OR Log4js.Level
 * @param {Log4js.Level} defaultLevel default Level, if no String representation
 * @return Level object
 * @type Log4js.Level
 */
function toLevel(sArg, defaultLevel) {
  if (!sArg) {
    return defaultLevel;
  }
  if (sArg instanceof Level) {
    module.exports[sArg.toString()] = sArg;
    return sArg;
  }
  if (typeof sArg === "string") {
    return module.exports[sArg.toUpperCase()] || defaultLevel;
  }
  return toLevel(sArg.toString());
}

Level.prototype.toString = function() {
  return this.levelStr;
};

Level.prototype.isLessThanOrEqualTo = function(otherLevel) {
  if (typeof otherLevel === "string") {
    otherLevel = toLevel(otherLevel);
  }
  return this.level <= otherLevel.level;
};

Level.prototype.isGreaterThanOrEqualTo = function(otherLevel) {
  if (typeof otherLevel === "string") {
    otherLevel = toLevel(otherLevel);
  }
  return this.level >= otherLevel.level;
};

Level.prototype.isEqualTo = function(otherLevel) {
  if (typeof otherLevel === "string") {
    otherLevel = toLevel(otherLevel);
  }
  return this.level === otherLevel.level;
};

module.exports = {
  ALL: new Level(Number.MIN_VALUE, "ALL"),
  TRACE: new Level(5000, "TRACE"),
  DEBUG: new Level(10000, "DEBUG"),
  INFO: new Level(20000, "INFO"),
  WARN: new Level(30000, "WARN"),
  ERROR: new Level(40000, "ERROR"),
  FATAL: new Level(50000, "FATAL"),
  MARK: new Level(9007199254740992, "MARK"), // 2^53
  OFF: new Level(Number.MAX_VALUE, "OFF"),
  toLevel: toLevel,
  Level: Level
};