moved gateway code here

app/models/merged/image.rb

@@ -0,0 +1,50 @@
+module Merged
+  class Image
+    include ActiveModel::API
+    include ActiveModel::Conversion
+    extend  ActiveModel::Naming
+
+    @@images = {}
+
+    attr_reader :name , :type , :size , :created_at , :updated_at
+
+    def initialize(filename)
+      puts "New Image #{filename}"
+      @name , @type = filename.split(".")
+      file = File.new(Rails.root.join(Image.root,filename))
+      @created_at = file.birthtime
+      @updated_at = file.ctime
+      @size = (file.size/1024).to_i
+    end
+
+    def self.all
+      return @@images unless @@images.empty?
+      Dir[Rails.root.join Image.root + "*.*"].each do |f|
+        file = f.split("/").last
+        self.add( file )
+      end
+      @@images
+    end
+
+    #save an io with given name (without ending, that is taken from io)
+    def self.create_new(filename , io)
+      original , ending = io.original_filename.split("/").last.split(".")
+      filename = original if( filename.blank? )
+      full_filename = filename + "." + ending
+      File.open(Rails.root.join(Image.root, full_filename), "wb") do |f|
+        f.write( io.read )
+      end
+      self.add( full_filename )
+    end
+
+    def self.root
+      "app/assets/images/merge/"
+    end
+
+    private
+    def self.add(filename)
+      key = filename.split(".").first
+      @@images[key] = Image.new(filename)
+    end
+  end
+end

app/models/merged/page.rb

@@ -0,0 +1,63 @@
+module Merged
+  class Page
+    include ActiveModel::API
+    include ActiveModel::Conversion
+    extend  ActiveModel::Naming
+
+    @@files = Set.new Dir.new(Rails.root.join("merge")).children
+
+    attr_reader :name , :content
+
+    alias :id  :name
+
+    def persisted?
+      false
+    end
+
+    def initialize file_name
+      @name = file_name.split(".").first
+      @content = YAML.load_file(Rails.root.join("merge" , file_name))
+    end
+
+    def sections
+      sections = []
+      @content.each_with_index do |section_data, index|
+        sections << Section.new(self , index,  section_data)
+      end
+      sections
+    end
+
+    def find_section(section_id)
+      @content.each_with_index do |section , index|
+        next unless section["id"] == section_id
+        return Section.new(self , index , section)
+      end
+      raise "Page #{name} as no section #{section_id}"
+    end
+
+    def first_template
+      @content[0]["template"]
+    end
+
+    def new_section
+      section = Hash.new
+      section['id'] = SecureRandom.hex(10)
+      @content << section
+      Section.new(self , 0 , section)
+    end
+
+    def save
+      file_name = Rails.root.join("merge" , name + ".yaml")
+      File.write( file_name , @content.to_yaml)
+    end
+
+    def self.all
+      @@files.collect{ |file| Page.new(file) }
+    end
+
+    def self.find(name)
+      Page.new(name + ".yaml")
+    end
+
+  end
+end

app/models/merged/section.rb

@@ -0,0 +1,53 @@
+module Merged
+  class Section
+    include ActiveModel::API
+    include ActiveModel::Conversion
+    extend  ActiveModel::Naming
+
+    attr_reader :name , :content , :page , :index
+
+    def persisted?
+      false
+    end
+
+    def initialize(page , index , section_data)
+      @page = page
+      raise "No number #{index}" unless index.is_a?(Integer)
+      raise "No has #{section_data}" unless section_data.is_a?(Hash)
+      @index = index
+      @content = section_data
+    end
+
+    def update(key , value)
+      return if key == "id" #not updating that
+      if(! @content[key].nil? )
+        if( @content[key].class != value.class )
+          raise "Type mismatch #{key} #{key.class}!=#{value.class}"
+        end
+      end
+      @content[key] = value
+    end
+
+    def template
+      @content["template"]
+    end
+
+    def id
+      @content["id"]
+    end
+
+    def save
+      raise "Called"
+    end
+
+    def self.all
+      @page.sections
+    end
+
+    def self.find(page_name , section_id)
+      raise "buggy"
+      Page.new(name + ".yaml")
+    end
+
+  end
+end