CakeFile

### Build file for CoffeePhysics. ###
fs 			  = require 'fs'
uglify 		  = require 'uglify-js'
{exec, spawn} = require 'child_process'

config =
	compiled: 'compiled'
	deploy: 'deploy'
	source: 'source'

output =
	'physics': [
		'base'
		'math/Random'
		'math/Vector'
		'engine/Particle'
		'engine/Spring'
		'engine/Physics'
		'engine/integrator/Integrator'
		'engine/integrator/Euler'
		'engine/integrator/ImprovedEuler'
		'engine/integrator/Verlet'
		'behaviour/Behaviour'
		'behaviour/Attraction'
		'behaviour/Collision'
		'behaviour/ConstantForce'
		'behaviour/EdgeBounce'
		'behaviour/EdgeWrap'
		'behaviour/Wander'
	]

grr = (message = '') -> 
    options = {
        title: 'CoffeeScript'
        image: '/Users/justin/node_modules/growl/lib/CoffeeScript.png'
    }
    try require('growl')(message, options)

task 'watch', 'Watch & compile changes in source dir', ->
	
	watch = exec "coffee -o #{config.compiled}/ -cwb #{config.source}/"
	watch.stdout.on 'data', (data) ->
		process.stdout.write data
		#grr "#{data}"

task 'build', '', ->
	
	for target, files of output

		# Map filenames.
		mapped = files.map (file) ->
			file = "#{config.source}/#{file}.coffee"

		# Concatenated file.
		file = "#{config.deploy}/#{target}.js"

		# Concatenate and compile.
		exec "coffee -j #{file} -cb #{(mapped.join ' ')}"
		console.log "coffee -j #{file} -cb #{(mapped.join ' ')}"

		# Uglify.
		jsp = uglify.parser
		pro = uglify.uglify

		fs.readFile file, 'utf8', (err, data) ->
			
			# Parse code and get the initial AST.
			ast = jsp.parse data

			# Get a new AST with mangled names.
			ast = pro.ast_mangle ast

			# Get an AST with compression optimizations.
			ast = pro.ast_squeeze ast

			# Compressed code.
			code = pro.gen_code ast
		
			# Write to file.
			fs.writeFile "#{config.deploy}/#{target}.min.js", code
			grr "Minfied: #{config.deploy}/#{target}.min.js"