Save chat history to Jupyter Lab's root directory

docs/source/users/index.md

@@ -471,6 +471,10 @@ use the `-a` or `--all-files` option.
 /learn -r arxiv 2404.18558
 ```
 
+### Exporting chat history
+Use the `/export` command to export the chat history from the current session to a markdown file named `chat_history-YYYY-MM-DD-HH-mm.md`. Using `/export <file_name>` will export the chat history to `<file_name>-YYYY-MM-DD-HH-mm.md` instead. You can export chat history as many times as you like in a single session. Each successive export will include the entire chat history up to that point in the session.
+
+
 ### Additional chat commands
 
 To clear the chat panel, use the `/clear` command. This does not reset the AI model; the model may still remember previous messages that you sent it, and it may use them to inform its responses.

packages/jupyter-ai/jupyter_ai/chat_handlers/export.py

@@ -1,4 +1,6 @@
+import argparse
 import os
+from datetime import datetime
 from typing import List
 
 from jupyter_ai.models import AgentChatMessage, HumanChatMessage
@@ -9,13 +11,15 @@
 class ExportChatHandler(BaseChatHandler):
     id = "export"
     name = "Export chat messages"
-    help = "Export the chat messages in markdown format"
+    help = "Export the chat messages in markdown format with timestamps"
     routing_type = SlashCommandRoutingType(slash_id="export")
 
     uses_llm = False
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
+        self.parser.prog = "/export"
+        self.parser.add_argument("path", nargs=argparse.REMAINDER)
 
     def chat_message_to_markdown(self, message):
         if isinstance(message, AgentChatMessage):
@@ -25,21 +29,18 @@ def chat_message_to_markdown(self, message):
         else:
             return ""
 
-    # Multiple chat histories in separate files
-    def get_chat_filename(self, path="./chat_history.md"):
-        filename, extension = os.path.splitext(path)
-        counter = 1
-        while os.path.exists(path):
-            path = filename + "_" + str(counter) + ".md"
-            counter += 1
-        return path
-
-    async def process_message(self, _):
+    # Write the chat history to a markdown file with a timestamp
+    async def process_message(self, message: HumanChatMessage):
         markdown_content = "\n\n".join(
             self.chat_message_to_markdown(msg) for msg in self._chat_history
         )
-        # Write the markdown content to a file or do whatever you want with it
-        chat_filename = self.get_chat_filename()
+        args = self.parse_args(message)
+        if len(args.path) > 0:
+            file_id = args.path[0]
+        else:
+            file_id = "chat_history"
+        outfile = f"{file_id}-{datetime.now():%Y-%m-%d-%H-%M}.md"
+        chat_filename = os.path.join(self.root_dir, outfile)
         with open(chat_filename, "w") as chat_history:
             chat_history.write(markdown_content)