#
# Copyright:: Copyright (c) 2018 Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# 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.

require "logger"

module Mixlib
  module Log
    module Logging
      include ::Logger::Severity

      TRACE = -1

      SEV_LABEL = %w{TRACE DEBUG INFO WARN ERROR FATAL ANY}.each(&:freeze).freeze

      def to_label(sev)
        SEV_LABEL[sev + 1] || -"ANY"
      end

      LEVELS = { trace: TRACE, debug: DEBUG, info: INFO, warn: WARN, error: ERROR, fatal: FATAL }.freeze
      LEVEL_NAMES = LEVELS.invert.freeze

      attr_accessor :metadata

      def pass(severity, args, progname = nil, data: {}, &block)
        args, progname, data = yield if block_given?
        add(severity, args, progname, data: data)
      end

      # Define the standard logger methods on this class programmatically.
      # No need to incur method_missing overhead on every log call.
      %i{trace debug info warn error fatal}.each do |method_name|
        level = LEVELS[method_name]
        define_method(method_name) do |msg = nil, data: {}, &block|
          pass(level, msg, data: data, &block)
          nil
        end
      end

    end
  end
end
