require 'rubygems'
require 'haml'
require File.dirname(__FILE__) + '/staticmatic/helpers'

class StaticMatic
  VERSION = '0.0.1'
  
  cattr_reader :base_dirs
  
  @@base_dirs = %w{
    site/
    site/stylesheets
    site/images
    site/javascripts
    src/
    src/pages/
    src/layouts
    src/stylesheets
  }
  
  @@templates = {
    'application.haml' => 'layouts',
    'application.sass' => 'stylesheets',
    'index.haml' => 'pages'
  }
  
  def initialize(base_dir)
    @base_dir = base_dir
    @src_dir = "#{@base_dir}/src"
    @site_dir = "#{@base_dir}/site"
    @templates_dir = File.dirname(__FILE__) + '/staticmatic/templates'
  end
  
  def build
    build_css
    build_html
  end
  
  def setup
    if !File.exists?(@base_dir)
      Dir.mkdir(@base_dir)
    end
    
    @@base_dirs.each do |directory|
      directory = "#{@base_dir}/#{directory}"
      if !File.exists?(directory)
        Dir.mkdir(directory)
        puts "created #{directory}"
      end
    end
  
    @@templates.each do |template, destination|
      `cp #{@templates_dir}/#{template} #{@src_dir}/#{destination}`
    end
  
    puts "Done"
  end
  
  private
  
  def copy_file(from, to)
  end
  
  def save_page(filename, content)
    filename = "#{filename}"
    generate_site_file(filename, 'html', content)
  end
  
  def save_stylesheet(filename, content)
    filename = "stylesheets/#{filename}"
    generate_site_file(filename, 'css', content)
  end
  
  def generate_site_file(filename, extension, content)
    site_file = File.new("#{@site_dir}/#{filename}.#{extension}", 'w+')
    site_file << content
    site_file.close
    puts "created #{@site_dir}/#{filename}.#{extension}"
  end
  
  def build_html
    layout_content = File.read("#{@src_dir}/layouts/application.haml")
    
    Dir.entries("#{@src_dir}/pages").each do |file|
      if matches = file.match(/([a-z0-9_-]+)\.haml$/)
        
        filename_without_extension = matches[1]
        
        page = Haml::Engine.new(File.read("#{@src_dir}/pages/#{file}"))
        page_content = page.render

        content_with_layout = Haml::Engine.new(layout_content, :locals => {:base_dir => @base_dir}).render { page_content }
        
        save_page(filename_without_extension, content_with_layout)
      end
    end
  end
  
  def build_css
    Dir.entries("#{@src_dir}/stylesheets").each do |file|
      if matches = file.match(/([a-z0-9_-]+)\.sass$/)
        filename_without_extension = matches[1]
        
        stylesheet = Sass::Engine.new(File.read("#{@src_dir}/stylesheets/#{file}"))

        save_stylesheet(filename_without_extension, stylesheet.render)
      end
    end
  end
end