# Encoding: utf-8

# Cloud Foundry Java Buildpack

# Copyright 2013-2015 the original author or authors.

#

# 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.

# A mixin that adds the ability to format a +Numeric+ as a user-readable duration

class Numeric

# Formats a number as a user-readable duration

#

# @return [String] a user-readable duration. Follows the following algorithm

# 1. If more than an hour, print hours and minutes

# 2. If less than an hour and more than a minute, print minutes and seconds

# 3. If less than a minute and more than a second, print seconds.tenths

def duration

remainder = self

hours = (remainder / HOUR).to_int

remainder -= HOUR * hours

minutes = (remainder / MINUTE).to_int

remainder -= MINUTE * minutes

return "#{hours}h #{minutes}m" if hours > 0

seconds = (remainder / SECOND).to_int

remainder -= SECOND * seconds

return "#{minutes}m #{seconds}s" if minutes > 0

tenths = (remainder / TENTH).to_int

"#{seconds}.#{tenths}s"

end

MILLISECOND = 0.001.freeze

TENTH = (100 * MILLISECOND).freeze

SECOND = (10 * TENTH).freeze

MINUTE = (60 * SECOND).freeze

HOUR = (60 * MINUTE).freeze

private_constant :MILLISECOND, :TENTH, :SECOND, :MINUTE, :HOUR

end