#!/usr/bin/env ruby

require 'maruku'
require 'optparse'

export = :html

OptionParser.new do |opts|
	opts.banner = "Usage: maruku [options] [file1.md [file2.md ..."

	opts.on("-v", "--[no-]verbose", "Run verbosely") do |v|
		MaRuKu::Globals[:verbose] = v end
	opts.on("-u", "--[no-]unsafe", "Use unsafe features") do |v|
		MaRuKu::Globals[:unsafe_features] = v end

	

	opts.on_tail("--pdf",  "Write PDF" ) do export = :pdf  end
	opts.on_tail("--html", "Write HTML") do export = :html end
	opts.on_tail("--tex",  "Write LaTeX" ) do export = :tex  end

	opts.on_tail("--version", "Show version") do
		puts OptionParser::Version.join('.')
		exit
	end

	opts.on_tail("-h", "--help", "Show this message") do
		puts opts
		exit
	end

end.parse!

#p ARGV
#p MaRuKu::Globals

# If we are given filenames, convert each file 
if not ARGV.empty?
	ARGV.each do |f|

		# read file content
		input =  File.open(f,'r').read

		$stderr.puts "Reading from #{f}"
	
		# create Maruku
		doc = Maruku.new(input, {:on_error=>:warning})


		out=""; prefix = "?"
		case export
		when :html 
			prefix='html'
			out = doc.to_html_document( {:indent => -1})
		when :pdf, :tex
			prefix='tex'
			out = doc.to_latex_document
		when :markdown
			prefix='pretty_md'
			out = doc.to_markdown
		end
			
		# write to file
		dir = File.dirname(f)
		job = File.join(dir, File.basename(f, File.extname(f)))
		filename = job + "." + prefix

		$stderr.puts "Writing to #{filename}"
		File.open(filename,'w') do |f| f.puts out end
			
		if export == :pdf
			cmd = "pdflatex '#{job}' -interaction=nonstopmode "+
			      "'-output-directory=#{dir}' "
			# run twice for cross references
			system cmd 
			system cmd
		end
	end
	
else
	# else, act as a filter
	data = $stdin.read
	puts Maruku.new(data, {:on_error=>:warning}).to_html
end