fs = require 'fs'
{spawn, exec} = require 'child_process'

printLine = (line) -> process.stdout.write line + '\n'
printWarn = (line) -> process.stderr.write line + '\n'

run = (command, content, file) ->
	[prog, args...] = command.split ' '
	proc = spawn prog, args

	stream = fs.createWriteStream file
	proc.stdout.pipe stream
	proc.stderr.on 'data', (buffer) ->
		printWarn file + ':\t' + buffer.toString().trim()

	proc.stdin.write content
	proc.stdin.end()

module.exports =
# JS
	coffee: (content, inputPath, outputPath) ->
		run "coffee --stdio --compile", content, outputPath + '.js'

# CSS
	scss: (content, inputPath, outputPath) ->
		run "sass --stdin --scss", content, outputPath + '.css'

	sass: (content, inputPath, outputPath) ->
		run "sass --stdin", content, outputPath + '.css'

	less: (content, inputPath, outputPath) ->
		run "lessc -", content, outputPath + '.css'

	styl: (content, inputPath, outputPath) ->
		run "stylus", content, outputPath + '.css'

# HTML
	haml: (content, inputPath, outputPath) ->
		run "haml --stdin", content, outputPath + '.html'

	jade: (content, inputPath, outputPath) ->
		run "jade", content, outputPath + '.html'