Update offline chat model config schema used by Emacs, Obsidian clients

The server uses a new schema for the conversation config. The Emacs,
Obsidian clients need to use this schema to update the conversation
config

src/interface/emacs/khoj.el

@@ -261,6 +261,11 @@ for example), set this to the full interpreter path."
   :type 'boolean
   :group 'khoj)
 
+(defcustom khoj-offline-chat-model nil
+  "Specify chat model to use for offline chat with khoj."
+  :type 'string
+  :group 'khoj)
+
 (defcustom khoj-auto-setup t
   "Automate install, configure and start of khoj server.
 Auto invokes setup steps on calling main entrypoint."
@@ -405,7 +410,8 @@ CONFIG is json obtained from Khoj config API."
          (default-index-dir (khoj--get-directory-from-config default-config '(content-type org embeddings-file)))
          (default-chat-dir (khoj--get-directory-from-config default-config '(processor conversation conversation-logfile)))
          (chat-model (or khoj-chat-model (alist-get 'chat-model (alist-get 'openai (alist-get 'conversation (alist-get 'processor default-config))))))
-         (enable-offline-chat (or khoj-chat-offline (alist-get 'enable-offline-chat (alist-get 'conversation (alist-get 'processor default-config)))))
+         (enable-offline-chat (or khoj-chat-offline (alist-get 'enable-offline-chat (alist-get 'offline-chat (alist-get 'conversation (alist-get 'processor default-config))))))
+         (offline-chat-model (or khoj-offline-chat-model (alist-get 'chat-model (alist-get 'offline-chat (alist-get 'conversation (alist-get 'processor default-config))))))
          (config (or current-config default-config)))
 
     ;; Configure content types
@@ -469,7 +475,8 @@ CONFIG is json obtained from Khoj config API."
       (message "khoj.el: Chat not configured yet.")
       (setq config (delq (assoc 'processor config) config))
       (cl-pushnew `(processor . ((conversation . ((conversation-logfile . ,(format "%s/conversation.json" default-chat-dir))
-                                                  (enable-offline-chat . ,enable-offline-chat)
+                                                  (offline-chat . ((enable-offline-chat . ,enable-offline-chat)
+                                                                   (chat-model . ,offline-chat-model)))
                                                   (openai . ((chat-model . ,chat-model)
                                                              (api-key . ,khoj-openai-api-key)))))))
                   config))
@@ -480,7 +487,8 @@ CONFIG is json obtained from Khoj config API."
        (let ((new-processor-type (alist-get 'processor config)))
          (setq new-processor-type (delq (assoc 'conversation new-processor-type) new-processor-type))
          (cl-pushnew `(conversation . ((conversation-logfile . ,(format "%s/conversation.json" default-chat-dir))
-                                       (enable-offline-chat . ,enable-offline-chat)
+                                       (offline-chat . ((enable-offline-chat . ,enable-offline-chat)
+                                                        (chat-model . ,offline-chat-model)))
                                        (openai . ((chat-model . ,chat-model)
                                                   (api-key . ,khoj-openai-api-key)))))
                      new-processor-type)
@@ -490,13 +498,15 @@ CONFIG is json obtained from Khoj config API."
      ;; Else if chat configuration in khoj backend has gone stale
      ((not (and (equal (alist-get 'api-key (alist-get 'openai (alist-get 'conversation (alist-get 'processor config)))) khoj-openai-api-key)
                 (equal (alist-get 'chat-model (alist-get 'openai (alist-get 'conversation (alist-get 'processor config)))) khoj-chat-model)
-                (equal (alist-get 'enable-offline-chat (alist-get 'conversation (alist-get 'processor config))) enable-offline-chat)))
+                (equal (alist-get 'enable-offline-chat (alist-get 'offline-chat (alist-get 'conversation (alist-get 'processor config)))) enable-offline-chat)
+                (equal (alist-get 'chat-model (alist-get 'offline-chat (alist-get 'conversation (alist-get 'processor config)))) offline-chat-model)))
       (message "khoj.el: Chat configuration has gone stale.")
       (let* ((chat-directory (khoj--get-directory-from-config config '(processor conversation conversation-logfile)))
              (new-processor-type (alist-get 'processor config)))
         (setq new-processor-type (delq (assoc 'conversation new-processor-type) new-processor-type))
         (cl-pushnew `(conversation . ((conversation-logfile . ,(format "%s/conversation.json" chat-directory))
-                                      (enable-offline-chat . ,enable-offline-chat)
+                                      (offline-chat . ((enable-offline-chat . ,enable-offline-chat)
+                                                       (chat-model . ,offline-chat-model)))
                                       (openai . ((chat-model . ,khoj-chat-model)
                                                  (api-key . ,khoj-openai-api-key)))))
                     new-processor-type)

src/interface/obsidian/src/utils.ts

@@ -14,11 +14,18 @@ type OpenAIType = null | {
     "api-key": string;
 };
 
+type OfflineChatType = null | {
+    "chat-model": string;
+    "enable-offline-chat": boolean;
+};
+
 interface ProcessorData {
     conversation: {
       "conversation-logfile": string;
       openai: OpenAIType;
-      "enable-offline-chat": boolean;
+      "offline-chat": OfflineChatType;
+      "tokenizer": null | string;
+      "max-prompt-size": null | number;
     };
 }
 
@@ -106,7 +113,8 @@ export async function configureKhojBackend(vault: Vault, setting: KhojSetting, n
     // Get default config fields from khoj backend
     let defaultConfig = await request(`${khojConfigUrl}/default`).then(response => JSON.parse(response));
     let khojDefaultChatDirectory = getIndexDirectoryFromBackendConfig(defaultConfig["processor"]["conversation"]["conversation-logfile"]);
-    let khojDefaultChatModelName = defaultConfig["processor"]["conversation"]["openai"]["chat-model"];
+    let khojDefaultOpenAIChatModelName = defaultConfig["processor"]["conversation"]["openai"]["chat-model"];
+    let khojDefaultOfflineChatModelName = defaultConfig["processor"]["conversation"]["offline-chat"]["chat-model"];
 
     // Get current config if khoj backend configured, else get default config from khoj backend
     await request(khoj_already_configured ? khojConfigUrl : `${khojConfigUrl}/default`)
@@ -117,13 +125,18 @@ export async function configureKhojBackend(vault: Vault, setting: KhojSetting, n
                 "conversation": {
                     "conversation-logfile": conversationLogFile,
                     "openai": null,
-                    "enable-offline-chat": setting.enableOfflineChat,
+                    "offline-chat": {
+                        "chat-model": khojDefaultOfflineChatModelName,
+                        "enable-offline-chat": setting.enableOfflineChat,
+                    },
+                    "tokenizer": null,
+                    "max-prompt-size": null,
                 }
             }
 
             // If the Open AI API Key was configured in the plugin settings
             if (!!setting.openaiApiKey) {
-                let openAIChatModel = data?.["processor"]?.["conversation"]?.["openai"]?.["chat-model"] ?? khojDefaultChatModelName;
+                let openAIChatModel = data?.["processor"]?.["conversation"]?.["openai"]?.["chat-model"] ?? khojDefaultOpenAIChatModelName;
                 processorData = {
                     "conversation": {
                         "conversation-logfile": conversationLogFile,
@@ -131,7 +144,12 @@ export async function configureKhojBackend(vault: Vault, setting: KhojSetting, n
                             "chat-model": openAIChatModel,
                             "api-key": setting.openaiApiKey,
                         },
-                        "enable-offline-chat": setting.enableOfflineChat,
+                        "offline-chat": {
+                            "chat-model": khojDefaultOfflineChatModelName,
+                            "enable-offline-chat": setting.enableOfflineChat,
+                        },
+                        "tokenizer": null,
+                        "max-prompt-size": null,
                     },
                 }
             }

src/khoj/utils/constants.py

@@ -53,7 +53,12 @@ empty_config = {
                 "api-key": None,
                 "chat-model": "gpt-3.5-turbo",
             },
-            "enable-offline-chat": False,
+            "offline-chat": {
+                "enable-offline-chat": False,
+                "chat-model": "llama-2-7b-chat.ggmlv3.q4_0.bin",
+            },
+            "tokenizer": None,
+            "max-prompt-size": None,
             "conversation-logfile": "~/.khoj/processor/conversation/conversation_logs.json",
         }
     },
@@ -125,7 +130,12 @@ default_config = {
                 "api-key": None,
                 "chat-model": "gpt-3.5-turbo",
             },
-            "enable-offline-chat": False,
+            "offline-chat": {
+                "enable-offline-chat": False,
+                "chat-model": "llama-2-7b-chat.ggmlv3.q4_0.bin",
+            },
+            "tokenizer": None,
+            "max-prompt-size": None,
             "conversation-logfile": "~/.khoj/processor/conversation/conversation_logs.json",
         }
     },