class Console::Logger

def self.default_log_level(env = ENV)
	if level = env['CONSOLE_LEVEL']
		LEVELS[level.to_sym] || level.to_i
	elsif $DEBUG
		DEBUG
	elsif $VERBOSE.nil?
		WARN
	else
		INFO
	end
end

def self.default_logger(output = $stderr, env = ENV, **options)
	if options[:verbose].nil?
		options[:verbose] = self.verbose?(env)
	end
	
	if options[:level].nil?
		options[:level] = self.default_log_level(env)
	end
	
	output = Output.new(output, env, **options)
	logger = self.new(output, **options)
	
	Resolver.default_resolver(logger)
	
	return logger
end

def self.local
	self.default_logger
end

def self.verbose?(env = ENV)
	!$VERBOSE.nil? || env['CONSOLE_VERBOSE']
end

def error(subject, *arguments, **options, &block)
	# This is a special case where we want to create a failure event from an exception.
	# It's common to see `Console.error(self, exception)` in code.
	if arguments.first.is_a?(Exception)
		exception = arguments.shift
		options[:event] = Event::Failure.for(exception)
	end
	
	super
end

def failure(subject, exception, **options)
	error(subject, event: Event::Failure.for(exception), **options)
end

def initialize(output, **options)
	super(output, **options)
end

def progress(subject, total, **options)
	options[:severity] ||= :info
	
	Progress.new(subject, total, **options)
end