# code: 
# * George Moschovitis  <gm@navel.gr>
#
# (c) 2004 Navel, all rights reserved.
# $Id: blog.rb 185 2004-12-10 13:29:09Z gmosx $

require 'nitro/service'
require 'nitro/builders/rss'
require 'nitro/ui/pager'

$blog_username = 'George Moschovitis'
$blog_password = 'mypassword'

module N

# = Common
# 
# Common properties/methods for the other classes.
#
class Common
	prop :create_time, Time
	prop_accessor :author, String
	prop_accessor :body, String, :form => :textarea

	def initialize
		@create_time = Time.now
	end
	
end

class Comment < Common; end

# = BlogEntry
#
class BlogEntry < Common
	prop_accessor :title, String
	has_many :comments, N::Comment, :linkback => 'entry_oid'

	# Play a bit with the text the user enters.
	#
	def body=(str)
		if str
			str.gsub!(/</, '&lt;')		
			str.gsub!(/>/, '&gt;')		
			str.gsub!(/"/, '&quot;')		
			str.gsub!(/'/, '&#39;')		
			str.gsub!(/\r\n/, ' <br />')
			@body = str
		end
	end			
end

# = Comment
#
class Comment < Common
	belongs_to :entry, N::BlogEntry
end

# = BlogService 
#
class BlogService < N::Service
	SOURCE_FILE = __FILE__
	
	before_filter :audit
	after_filter :cache
	
	scaffold N::BlogEntry, :name => 'entry', :index => true
	scaffold N::Comment

	def list_entry
		@pager = N::UI::Pager.new('entries', @request, 3)
		@entries = N::BlogEntry.all("ORDER BY oid DESC #{@pager.sql_limit}")
		@pager.set(N::BlogEntry.count)
	end
	
	def new_entry
		entry = request.fill(N::BlogEntry.new)
		entry.author = session['username']
		entry.save!
	end	

	# example of generated view
	def list_entry__xml
		@out << N::RssBuilder.render(@entries)
	end
	
	def new_comment
		comment = request.fill(N::Comment.new)
		comment.save!
	end

	# example of generated view
	def list_comment__xml
		@out << N::RssBuilder.render(@comments)
	end
	
	def login
		if password = params['password']
			if password == $blog_password
				session['owner'] = true
				session['username'] = $blog_username
				redirect '/'
			else
				@error = 'Invalid password'
			end
		end
	end
	
	def logout
		session['owner'] = session['username'] = nil
	end	
	
private

	def audit
		puts "audit (before filter example)"
	end

	def cache
		puts "cache (after filter example)"
	end
	
end

end # module