class Covered::Summary

def call(wrapper, output = $stdout, **options)
	terminal = self.terminal(output)
	
	statistics = self.each(wrapper) do |coverage|
		path = wrapper.relative_path(coverage.path)
		terminal.puts ""
		terminal.puts path, style: :path
		
		begin
			print_coverage(terminal, coverage, **options)
		rescue => error
			print_error(terminal, error)
		end
		
		coverage.print(output)
	end
	
	terminal.puts
	statistics.print(output)
end

def each(wrapper)
	statistics = Statistics.new
	
	wrapper.each do |coverage|
		statistics << coverage
		
		if @threshold.nil? or coverage.ratio < @threshold
			yield coverage
		end
	end
	
	return statistics
end

def initialize(threshold: 1.0)
	@threshold = threshold
end

def print_annotations(terminal, coverage, line, line_offset)
	if annotations = coverage.annotations[line_offset]
		prefix = "#{line_offset}|".rjust(8) + "*|".rjust(8)
		terminal.write prefix, style: :ignored_prefix
		
		terminal.write line.match(/^\s+/)
		terminal.puts "\# #{annotations.join(", ")}", style: :annotations
	end
end

def print_coverage(terminal, coverage)
	line_offset = 1
	counts = coverage.counts
	
	coverage.read do |file|
		print_line_header(terminal)
		
		file.each_line do |line|
			count = counts[line_offset]
			
			print_annotations(terminal, coverage, line, line_offset)
			
			print_line(terminal, line, line_offset, count)
			
			line_offset += 1
		end
	end
end

def print_error(terminal, error)
	terminal.puts "Error: #{error.message}", style: :error
	terminal.puts error.backtrace
end

def print_line(terminal, line, line_offset, count)
	prefix = "#{line_offset}|".rjust(8) + "#{count}|".rjust(8)
	
	if count == nil
		terminal.write prefix, style: :ignored_prefix
		terminal.write line, style: :ignored_code
	elsif count == 0
		terminal.write prefix, style: :uncovered_prefix
		terminal.write line, style: :uncovered_code
	else
		terminal.write prefix, style: :covered_prefix
		terminal.write line, style: :covered_code
	end
	
	# If there was no newline at end of file, we add one:
	unless line.end_with? $/
		terminal.puts
	end
end

def print_line_header(terminal)
	prefix = "Line|".rjust(8) + "Hits|".rjust(8)
	
	terminal.puts prefix, style: :header_prefix
end

def terminal(output)
	require 'console/terminal'
	
	Console::Terminal.for(output).tap do |terminal|
		terminal[:path] ||= terminal.style(nil, nil, :bold, :underline)
		terminal[:brief_path] ||= terminal.style(:yellow)
		
		terminal[:uncovered_prefix] ||= terminal.style(:red)
		terminal[:covered_prefix] ||= terminal.style(:green)
		terminal[:ignored_prefix] ||= terminal.style(nil, nil, :faint)
		terminal[:header_prefix] ||= terminal.style(nil, nil, :faint)
		
		terminal[:uncovered_code] ||= terminal.style(:red)
		terminal[:covered_code] ||= terminal.style(:green)
		terminal[:ignored_code] ||= terminal.style(nil, nil, :faint)
		
		terminal[:annotations] ||= terminal.style(:blue)
		terminal[:error] ||= terminal.style(:red)
	end
end