Add client support for NIP-02 (manage contact lists)

lib/nostr/event_fragment.rb

@@ -25,7 +25,7 @@ module Nostr
     #
     attr_reader :created_at
 
-    # The kind of the event. An integer from 0 to 2
+    # The kind of the event. An integer from 0 to 3
     #
     # @api public
     #
@@ -76,7 +76,7 @@ module Nostr
     #
     # @param pubkey [String] 32-bytes hex-encoded public key of the event creator.
     # @param created_at [Integer] Date of the creation of the vent. A UNIX timestamp, in seconds.
-    # @param kind [Integer] The kind of the event. An integer from 0 to 2.
+    # @param kind [Integer] The kind of the event. An integer from 0 to 3.
     # @param tags [Array<Array>] An array of tags. Each tag is an array of strings.
     # @param content [String] Arbitrary string.
     #

lib/nostr/event_kind.rb

@@ -24,5 +24,12 @@ module Nostr
     # @return [Integer]
     #
     RECOMMEND_SERVER = 2
+
+    # A special event with kind 3, meaning "contact list" is defined as having a list of p tags, one for each of
+    # the followed/known profiles one is following.
+    #
+    # @return [Integer]
+    #
+    CONTACT_LIST = 3
   end
 end

lib/nostr/user.rb

@@ -50,7 +50,7 @@ module Nostr
     # @param event_attributes [Hash]
     # @option event_attributes [String] :pubkey 32-bytes hex-encoded public key of the event creator.
     # @option event_attributes [Integer] :created_at Date of the creation of the vent. A UNIX timestamp, in seconds.
-    # @option event_attributes [Integer] :kind The kind of the event. An integer from 0 to 2.
+    # @option event_attributes [Integer] :kind The kind of the event. An integer from 0 to 3.
     # @option event_attributes [Array<Array>] :tags  An array of tags. Each tag is an array of strings.
     # @option event_attributes [String] :content Arbitrary string.
     #