#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2014 Phusion
#
#  "Phusion Passenger" is a trademark of Hongli Lai & Ninh Bui.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

module PhusionPassenger

class ProgressBar
	THROBBLER = ["-", "\\", "|", "/", "-"]

	def initialize(output = STDOUT)
		@output = output
		@tty = output.tty?
		@throbbler_index = 0
	end

	def set(percentage)
		if @tty
			width = (percentage * 50).to_i
			bar   = "*" * width
			space = " " * (50 - width)
			text = sprintf("[%s%s] %s", bar, space, THROBBLER[@throbbler_index])
			@throbbler_index = (@throbbler_index + 1) % THROBBLER.size
			@output.write("#{text}\r")
			@output.flush
		else
			@output.write(".")
			@output.flush
		end
	end

	def finish
		@output.write("\n")
		@output.flush
	end
end

end # module PhusionPassenger