Add archive metadata schema, RS type

src/chat-messages.js

@@ -14,7 +14,7 @@ function parseDate (date) {
 
 const ChatMessages = function (privateClient, publicClient) {
   /**
-   * Schema: chat-messages/daily
+   * Schema: chat-messages/daily-archive
    *
    * Represents one calendar day of chat messages
    *
@@ -144,6 +144,51 @@ const ChatMessages = function (privateClient, publicClient) {
   privateClient.declareType("daily-archive", "https://kosmos.org/ns/v2", archiveSchema);
   publicClient.declareType("daily-archive", "https://kosmos.org/ns/v2", archiveSchema);
 
+  /**
+   * Schema: chat-messages/daily-archive-meta
+   *
+   * Stores meta information about the daily archives
+   *
+   * @example
+   * {
+   *   "@context": "https://kosmos.org/ns/v2",
+   *   "@id": "chat-messages/irc.libera.chat/channels/kosmos/meta",
+   *   "@type": "ChatChannelMetadata",
+   *   "first": "2009/01/03",
+   *   "last": "2021/11/05"
+   *   }
+   * }
+   */
+  const archiveMetaSchema = {
+    "type": "object",
+    "properties": {
+      "@context": {
+        "type": "string",
+        "default": "https://kosmos.org/ns/v2",
+        "enum": ["https://kosmos.org/ns/v2"]
+      },
+      "@id": {
+        "type": "string",
+      },
+      "@type": {
+        "type": "string",
+        "default": "ChatChannel",
+        "enum": ["ChatChannel"]
+      },
+      "first": {
+        "type": "string",
+        "pattern": "^[0-9]{4}\/[0-9]{2}\/[0-9]{2}$"
+      },
+      "last": {
+        "type": "string",
+        "pattern": "^[0-9]{4}\/[0-9]{2}\/[0-9]{2}$"
+      }
+    },
+    "required": ["@id", "first", "last"]
+  };
+
+  privateClient.declareType("daily-archive-meta", "https://kosmos.org/ns/v2", archiveMetaSchema);
+
   /**
    * A daily archive stores chat messages by calendar day.
    *
@@ -537,6 +582,13 @@ const ChatMessages = function (privateClient, publicClient) {
       });
     }
 
+    _createArchiveMetaDocument () {
+
+    }
+
+    _updateArchiveMetaDocument () {
+    }
+
     /*
      * Write archive document
      *