add send-message-simple-with-history endpoint to avoid… (#2101)

* add send-message-simple-with-history endpoint to support ramp. avoids bad json output in models and allows client to pass history in instead of maintaining it in our own session

* slightly better error checking

* addressing code review

* reject on any empty message

* update test naming

backend/tests/api/test_api.py

@@ -0,0 +1,104 @@
+import os
+from collections.abc import Generator
+from typing import Any
+
+import pytest
+from fastapi.testclient import TestClient
+
+from danswer.main import fetch_versioned_implementation
+from danswer.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+@pytest.fixture(scope="function")
+def client() -> Generator[TestClient, Any, None]:
+    # Set environment variables
+    os.environ["ENABLE_PAID_ENTERPRISE_EDITION_FEATURES"] = "True"
+
+    # Initialize TestClient with the FastAPI app
+    app = fetch_versioned_implementation(
+        module="danswer.main", attribute="get_application"
+    )()
+    client = TestClient(app)
+    yield client
+
+
+@pytest.mark.skip(
+    reason="enable when we have a testing environment with preloaded data"
+)
+def test_handle_simplified_chat_message(client: TestClient) -> None:
+    req: dict[str, Any] = {}
+
+    req["persona_id"] = 0
+    req["description"] = "pytest"
+    response = client.post("/chat/create-chat-session", json=req)
+    chat_session_id = response.json()["chat_session_id"]
+
+    req = {}
+    req["chat_session_id"] = chat_session_id
+    req["message"] = "hello"
+
+    response = client.post("/chat/send-message-simple-api", json=req)
+    assert response.status_code == 200
+
+
+@pytest.mark.skip(
+    reason="enable when we have a testing environment with preloaded data"
+)
+def test_handle_send_message_simple_with_history(client: TestClient) -> None:
+    req: dict[str, Any] = {}
+    messages = []
+    messages.append({"message": "What sorts of questions can you answer for me?"})
+    # messages.append({"message":
+    #                  "I'd be happy to assist you with a wide range of questions related to Ramp's expense management platform. "
+    #                  "I can help with topics such as:\n\n"
+    #                  "1. Setting up and managing your Ramp account\n"
+    #                  "2. Using Ramp cards and making purchases\n"
+    #                  "3. Submitting and reviewing expenses\n"
+    #                  "4. Understanding Ramp's features and benefits\n"
+    #                  "5. Navigating the Ramp dashboard and mobile app\n"
+    #                  "6. Managing team spending and budgets\n"
+    #                  "7. Integrating Ramp with accounting software\n"
+    #                  "8. Troubleshooting common issues\n\n"
+    #                  "Feel free to ask any specific questions you have about using Ramp, "
+    #                  "and I'll do my best to provide clear and helpful answers. "
+    #                  "Is there a particular area you'd like to know more about?",
+    #                  "role": "assistant"})
+    # req["prompt_id"] = 9
+    # req["persona_id"] = 6
+
+    # Yoda
+    req["persona_id"] = 1
+    req["prompt_id"] = 4
+    messages.append(
+        {
+            "message": "Answer questions for you, I can. "
+            "About many topics, knowledge I have. "
+            "But specific to documents provided, limited my responses are. "
+            "Ask you may about:\n\n"
+            "- User interviews and building trust with participants\n"
+            "- Designing effective surveys and survey questions  \n"
+            "- Product analysis approaches\n"
+            "- Recruiting participants for research\n"
+            "- Discussion guides for user interviews\n"
+            "- Types of survey questions\n\n"
+            "More there may be, but focus on these areas, the given context does. "
+            "Specific questions you have, ask you should. Guide you I will, as best I can.",
+            "role": "assistant",
+        }
+    )
+    # messages.append({"message": "Where can I pilot a survey?"})
+
+    # messages.append({"message": "How many data points should I collect to validate my solution?"})
+    messages.append({"message": "What is solution validation research used for?"})
+
+    req["messages"] = messages
+
+    response = client.post("/chat/send-message-simple-with-history", json=req)
+    assert response.status_code == 200
+
+    resp_json = response.json()
+
+    # persona must have LLM relevance enabled for this to pass
+    assert len(resp_json["llm_chunks_indices"]) > 0