# vim:ts=2:sw=2:et:si:ai:
# The API sends back messages via the p4.messages attribute if there was an
# error with the last command. We will often convert that to this exception,
# which will be formatted into JSON.
require 'P4'

# Any error we get from the Perforce server is generally encapsulated in
# a P4Error, which allows us to get some basic diagnostic information from
# the Perforce server out to the user.
class P4Error < RuntimeError
  # All error codes must be greater than this number.
  ERROR_CODE_BASE     = 15_360

  # Note: We use 15_361 for 'unhandled' ruby errors

  attr_accessor :message_code, :message_severity, :message_text

  # Class method to create a valid P4Error object from a simple
  # string. Used when we get errors for which no P4::Message object
  # is available.
  def self.default_error(message_text)
    P4Error.new(ERROR_CODE_BASE,
                P4::E_FAILED,
                message_text)
  end

  # Returns true if there's an error
  def self.error?(p4, severity: P4::E_FAILED)
    return p4.messages && p4.messages.any? {|m| m.severity >= severity}
  end

  def initialize(code, severity, text)
    @message_code     = code
    @message_severity = severity
    @message_text     = text
  end

  # Returns true if the exception should actually be considered a user error
  # instead of a system exception.
  def user_error?
    return @message_severity == P4::E_FAILED
  end

  # Returns true if the exception is truly a system problem.
  def system_error?
    return @message_severity == P4::E_FATAL
  end

  def to_s
    @message_text
  end
end