Organizing

app/models/configuration.rb

@@ -0,0 +1,28 @@
+class Configuration
+  attr_reader :database_url,
+              :syntaxes_map,
+              :available_syntaxes
+
+  def initialize
+    load_database_config
+    load_syntax_config
+  end
+
+  def load_database_config
+    config = YAML.load_file(APP_ROOT.join('config', 'database.yml'))
+    @database_url = '%s://%s:%s@%s:%s/%s' % [
+      config['protocol'],
+      config['username'],
+      config['password'],
+      config['host'],
+      config['port'],
+      config['database']
+    ]
+  end
+
+  def load_syntax_config
+    config = YAML.load_file(APP_ROOT.join('config', 'syntax.yml'))
+    @syntaxes_map = config
+    @available_syntaxes = config.keys
+  end
+end

app/models/paste.rb

@@ -0,0 +1,50 @@
+class Paste
+  attr_reader :contents, :type
+
+  class << self
+    def find(id)
+      record = DB[:pastes].where(id: id).first
+      record ? new(record[:contents], record[:type]) : nil
+    end
+  end
+
+  def initialize(contents, type = nil)
+    @contents = contents
+    @type = type if CONFIG.available_syntaxes.include?(type)
+  end
+
+  def save
+    encrypt!
+    DB[:pastes].insert(contents: contents, type: type)
+  end
+
+  def decrypt(key)
+    @key = key
+    decrypt!
+    self
+  end
+
+  def key
+    @key ||= SecureRandom.hex
+  end
+
+  def encrypt!
+    @contents = Base64.encode64(Encryptor.encrypt(value: contents, key: key))
+  end
+
+  def decrypt!
+    @contents = Encryptor.decrypt(value: Base64.decode64(contents), key: key)
+  end
+
+  def highlighted
+    Pygments.highlight(contents, lexer: type, options: { linenos: 'table' })
+  end
+
+  def paragraph
+    "<pre>#{contents}</pre>"
+  end
+
+  def html
+    type ? highlighted : paragraph
+  end
+end