# hx/output/liquidtemplate - Liquid templates for Hx
#
# Copyright (c) 2009-2010 MenTaLguY <mental@rydia.net>
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'rubygems'
require 'time'
require 'liquid'
require 'redcloth'
require 'cgi'
require 'hx'

module Hx
module Output

class LiquidTemplate
  include Hx::Filter

  module TextFilters
    def textilize(input)
      RedCloth.new(input).to_html
    end

    def escape_url(input)
      CGI.escape(input)
    end

    def escape_xml(input)
      CGI.escapeHTML(input)
    end

    def path_to_url(input, base_url)
      "#{base_url}#{input}"
    end

    def handleize(input)
      "id_#{input.to_s.gsub(/[^A-Za-z0-9]/, '_')}"
    end

    def xsd_datetime(input)
      input = Time.parse(input) unless Time === input
      input.xmlschema
    end
  end

  def initialize(input, options)
    @input = input
    @options = {}
    for key, value in options
      @options[key.to_s] = value
    end
    template_dir = Hx.get_pathname(options, :template_dir)
    # global, so all LiquidTemplate instances kind of have to agree on the
    # same template directory for things to work right
    Liquid::Template.file_system = Liquid::LocalFileSystem.new(template_dir)
    Liquid::Template.register_filter(TextFilters)
    template_file = template_dir + options[:template]
    @template = Liquid::Template.parse(template_file.read)
    @extension = options[:extension]
    @mime_type = options[:mime_type]
    @strip_extension_re = nil
    @strip_extension_re = /\.#{Regexp.quote(@extension)}$/ if @extension
  end

  def each_entry_path
    @input.each_entry_path do |path|
      unless @extension.nil?
        yield "#{path}.#{@extension}"
      else
        yield path
      end
    end
    self
  end

  def get_entry(path)
    path = path.sub(@strip_extension_re, '') if @strip_extension_re
    entry = @input.get_entry(path)
    output_entry = {}
    output_entry['content'] = Hx::LazyContent.new do
      @template.render(
        'now' => Time.now,
        'options' => @options,
        'path' => path,
        'entry' => entry
      )
    end
    output_entry['mime_type'] = @mime_type if @mime_type
    if entry.has_key? 'updated'
      output_entry['created'] = output_entry['updated'] = entry['updated']
    end
    output_entry
  end
end

end
end