WIP

dist/pigeon/key_pair.rb

@@ -23,7 +23,6 @@ module Pigeon
     #  the key should be derived
     def initialize(seed = SecureRandom.random_bytes(Ed25519::KEY_SIZE))
       @seed = seed
-      @raw_key = Ed25519::SigningKey.new(seed)
     end
 
     def private_key
@@ -31,14 +30,26 @@ module Pigeon
     end
 
     def public_key
-      bytes = @raw_key.verify_key.to_bytes
+      bytes = raw_key.verify_key.to_bytes
       b64 = Base64.urlsafe_encode64(bytes)
 
       @public_key ||= KeyPair.add_headers(b64)
     end
 
+    def sign(string)
+      hex = raw_key.sign(string)
+      b64 = Base64.urlsafe_encode64(hex)
+      return b64 + ".sig.ed25519"
+    end
+
     def save!
       Pigeon::Storage.current.set_config(SEED_CONFIG_KEY, @seed)
     end
+
+    private
+
+    def raw_key
+      @raw_key ||= Ed25519::SigningKey.new(@seed)
+    end
   end
 end

dist/pigeon/message.rb

@@ -1,3 +1,5 @@
+require "digest"
+
 module Pigeon
   class Message
     NAME_OF_DRAFT = "HEAD.draft"
@@ -36,27 +38,36 @@ module Pigeon
     end
 
     def calculate_signature
-      puts "========== TODO"
-      "FIX_ASAP_!"
+      string = Template.new(self).render_without_signature
+      KeyPair.current.sign(string)
     end
 
-    def path_to_message_numbe(n)
+    def path_to_message_number(n)
       File.join(".pigeon", "user", "#{n.to_s.rjust(7, "0")}.pigeon")
     end
 
+    def previous_message
+      raise "Could not load @depth" unless @depth
+      if (@depth == 1)
+        return nil
+      else
+        Marshal.load(File.read(path_to_message_number(@depth - 1)))
+      end
+    end
+
+    def calculate_depth
+      Dir[OUTBOX_PATH].count
+    end
+
     def sign
       # Set @depth
-      @depth = (Dir[OUTBOX_PATH].count - 1)
+      @depth = calculate_depth
+      @prev = previous_message ? previous_message.signature : "".inspect
       @signature = calculate_signature
-
-      # Create a file in ".pigeon/user/#{ @depth.rjust(7, "0") }".pigeon
-      file_path = path_to_message_numbe(@depth)
-      binding.pry
-      # calculate prev
-      @prev = "HOW WILL I DO THIS?"
-      # Store to disk
-      self.save
-      # return self
+      file_path = path_to_message_number(@depth)
+      self.freeze
+      File.write(file_path, Marshal.dump(self))
+      self
     end
 
     def save

dist/pigeon/template.rb

@@ -6,9 +6,9 @@ module Pigeon
   class Template
     TPL_DIR = "views"
 
-    HEADER_TPL = File.read(File.join(TPL_DIR, "1_header.erb"))
-    BODY_TPL = File.read(File.join(TPL_DIR, "2_body.erb"))
-    FOOTER_TPL = File.read(File.join(TPL_DIR, "3_footer.erb"))
+    HEADER_TPL = File.read(File.join(TPL_DIR, "1_header.erb")).sub("\n", "")
+    BODY_TPL = File.read(File.join(TPL_DIR, "2_body.erb")).sub("\n", "")
+    FOOTER_TPL = File.read(File.join(TPL_DIR, "3_footer.erb")).sub("\n", "")
 
     COMPLETE_TPL = [HEADER_TPL, BODY_TPL, FOOTER_TPL].join("")
 
@@ -19,6 +19,16 @@ module Pigeon
     end
 
     def render
+      do_render(COMPLETE_TPL)
+    end
+
+    def render_without_signature
+      do_render([HEADER_TPL, BODY_TPL].join(""))
+    end
+
+    private
+
+    def do_render(template)
       author = message.author
       body = message.body
       kind = message.kind

views/2_body.erb

@@ -1 +1,2 @@
 <% body.to_a.each do |k, v| %><%= k %>:<%= v %><%= "\n" %><% end %>
+