#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

# A few helpful tips about the Rules file:
#
# * The string given to #compile and #route are matching patterns for
#   identifiers--not for paths. Therefore, you can’t match on extension.
#
# * The order of rules is important: for each item, only the first matching
#   rule is applied.
#
# * Item identifiers start and end with a slash (e.g. “/about/” for the file
#   “content/about.html”). To select all children, grandchildren, … of an
#   item, use the pattern “/about/*/”; “/about/*” will also select the parent,
#   because “*” matches zero or more characters.

preprocess do
  # find reference item
  reference = @items.find{|item| item.identifier == '/references/'}
  
  unless reference.nil?
    # add references to every markdown item
    @items.each do |item|
      if item == reference
        next
      elsif item[:extension] == "mkd"
        item.add_references reference.raw_content
      end
    end
  end
end

compile '/style/' do
  # don’t filter or layout
end

compile '*' do
  if item.binary?
    # don’t filter binary items
  else
    case @item[:extension]
    when "mkd"
      filter :kramdown
      layout 'default'
    when "erb"
      filter :erb
      layout 'default'
    end
    filter :tidy
  end
end

route '/style/' do
  '/style.css'
end

route '/404/' do
  '/404.html'
end

route '*' do
  if item.binary?
    # Write item with identifier /foo/ to /foo.ext
    item.identifier.chop + '.' + item[:extension]
  else
    # Write item with identifier /foo/ to /foo/index.html
    item.identifier + 'index.html'
  end
end

layout '*', :erb