class Covered::Statistics

def self.for(coverage)
	self.new.tap do |statistics|
		statistics << coverage
	end
end

def << coverage
	@total << coverage
	(@paths[coverage.path] ||= coverage.empty).merge!(coverage)
end

def [](path)
	@paths[path]
end

def as_json
	{
		total: total.as_json,
		paths: @paths.map{|path, coverage| [path, coverage.as_json]}.to_h,
	}
end

def count
	@paths.size
end

def executable_count
	@total.executable_count
end

def executed_count
	@total.executed_count
end

def initialize
	@total = Aggregate.new
	@paths = Hash.new
end

def print(output)
	output.puts "#{count} files checked; #{@total.executed_count}/#{@total.executable_count} lines executed; #{@total.percentage.to_f.round(2)}% covered."
	
	if self.complete?
		output.puts "🧘 #{COMPLETE.sample}"
	end
end

def to_json(options)
	as_json.to_json(options)
end

def validate!(minimum = 1.0)
	if total.ratio < minimum
		raise CoverageError, "Coverage of #{self.percentage.to_f.round(2)}% is less than required minimum of #{(minimum * 100.0).round(2)}%!"
	end
end