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Main API Routes
Handles patient management, dashboard, and conversation endpoints.
"""
from fastapi import APIRouter, Depends, UploadFile, File, Request, Response, BackgroundTasks, HTTPException
from fastapi.concurrency import run_in_threadpool
from fastapi.responses import HTMLResponse
from fastapi.templating import Jinja2Templates
from pydantic import BaseModel
from core.schemas import (
ResetRequest, ChatRequest, StartRequest,
PatientCreateRequest, EndSessionRequest
)
from api.dependencies import (
get_orchestrator, get_patient_service,
get_stt_provider, get_profile_store, get_session_store,
get_current_user,
ConversationOrchestrator, PatientService
)
from core.ports import ProfileStore, SessionStore, STTProvider
router = APIRouter()
templates = Jinja2Templates(directory="templates")
@router.get("/health")
def health():
"""Simple health check endpoint to verify API is running."""
return {"status": "ok"}
@router.get("/", response_class=HTMLResponse)
def home(request: Request):
"""Serves the main frontend Single Page Application (SPA)."""
return templates.TemplateResponse(request, "index.html")
@router.get("/patients")
def get_patients(profile_store: ProfileStore = Depends(get_profile_store), user: dict = Depends(get_current_user)):
"""Retrieve a list of all registered patients for the logged-in user."""
patients = profile_store.list_patients_for_user(user["id"])
if not patients:
# Auto-create a default profile for older accounts that lack one
patient_id = profile_store.create_patient(
name=user.get("username", "User"),
age=None,
gender=None,
primary_concern=None,
user_id=user["id"]
)
return [{"patient_id": patient_id, "name": user.get("username", "User")}]
return patients
@router.post("/patients/create")
def create_new_patient(
request: PatientCreateRequest,
profile_store: ProfileStore = Depends(get_profile_store),
user: dict = Depends(get_current_user)
):
"""Create a new patient record in the database."""
p_id = profile_store.create_patient(
name=request.name,
age=request.age,
gender=request.gender,
occupation=request.occupation,
primary_concern=request.primary_concern,
user_id=user["id"]
)
return {"patient_id": p_id, "name": request.name}
@router.get("/patients/{patient_id}/dashboard")
def patient_dashboard(
patient_id: str,
profile_store: ProfileStore = Depends(get_profile_store),
user: dict = Depends(get_current_user)
):
"""Retrieve full dashboard data for a patient (info, profile, past sessions)."""
patient_info = profile_store.get_patient(patient_id)
if not patient_info:
return Response(status_code=404)
profile = profile_store.get_patient_profile(patient_id)
sessions = profile_store.get_patient_sessions(patient_id)
return {
"patient": patient_info,
"profile": profile,
"sessions": sessions
}
@router.post("/patients/{patient_id}/reset")
def reset_patient(
patient_id: str,
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Reset the patient's data, including sessions, messages, and profile."""
patient_service.reset_patient_data(patient_id)
return {"status": "success", "message": "Patient data reset successfully."}
@router.delete("/patients/{patient_id}")
def delete_patient(
patient_id: str,
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Delete a patient and all their associated data completely."""
patient_service.delete_patient(patient_id)
return {"status": "success", "message": "Patient deleted successfully."}
@router.post("/end_session")
def end_session_endpoint(
request: EndSessionRequest,
background_tasks: BackgroundTasks,
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Gracefully terminate an active session and generate a clinical summary in the background."""
patient_service.end_session(request.session_id, request.patient_id)
background_tasks.add_task(patient_service.generate_session_summary, request.session_id, request.patient_id)
return {"status": "ended"}
@router.post("/start")
def start_session(
request: StartRequest = StartRequest(),
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Initialize a new conversation session and generate the psychiatrist's opening remark."""
try:
session_id, opening_message, patient_id = patient_service.create_new_session(request.patient_id)
return {
"assistant_message": opening_message,
"session_id": session_id,
"patient_id": patient_id,
}
except Exception as e:
error_str = str(e).lower()
if "connection error" in error_str or "all providers failed" in error_str or "unavailable" in error_str:
raise HTTPException(status_code=503, detail="LLMs are currently unavailable. Cannot start session.")
raise e
@router.post("/chat_text")
def chat_text(
request: ChatRequest,
orchestrator: ConversationOrchestrator = Depends(get_orchestrator),
patient_service: PatientService = Depends(get_patient_service),
session_store: SessionStore = Depends(get_session_store),
profile_store: ProfileStore = Depends(get_profile_store),
user: dict = Depends(get_current_user)
):
"""
Process a user's chat message through the core orchestrator.
LLM2 analysis is run synchronously within the orchestrator if triggered.
"""
if not session_store.session_exists(request.session_id):
# Session expired, create a new one
session_id, opening_message, patient_id = patient_service.create_new_session(request.patient_id)
# Instead of dropping the user's message and returning the greeting, pipe the user's message into the new session
request.session_id = session_id
request.patient_id = patient_id
try:
chat_result = orchestrator.handle_message(
session_id=request.session_id,
message=request.message,
emotion=request.emotion,
default_patient_id=request.patient_id
)
except Exception as e:
error_str = str(e).lower()
error_type = type(e).__name__.lower()
if any(k in error_str for k in ("rate limit", "ratelimit", "429", "402", "tokens exhausted", "quota")) or "ratelimit" in error_type:
raise HTTPException(status_code=429, detail="Tokens Exhausted")
if "connection error" in error_str or "all providers failed" in error_str or "unavailable" in error_str:
raise HTTPException(status_code=503, detail="LLMs are currently unavailable. Please try again later.")
raise e
return {
"assistant_message": chat_result.assistant_message,
"intent": chat_result.intent,
"risk_flagged": chat_result.risk_flagged,
"session_id": request.session_id,
}
@router.post("/transcribe")
async def transcribe(
audio: UploadFile = File(...),
stt_provider: STTProvider = Depends(get_stt_provider)
):
"""
Accepts raw audio bytes from the frontend and passes them to the STTProvider
for speech-to-text and emotional tone extraction.
"""
audio_bytes = await audio.read()
# Run the CPU-bound transcription in a threadpool to prevent blocking the async event loop
result = await run_in_threadpool(stt_provider.transcribe, audio_bytes)
return {
"text": result.get("text", ""),
"emotion": result.get("emotion", "unknown"),
"event": result.get("event", None),
}
@router.get("/patients/{patient_id}/active_session")
def get_active_session(
patient_id: str,
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Check if the patient currently has an active session."""
session_id = patient_service.get_active_session(patient_id)
return {"session_id": session_id}
@router.get("/sessions/{session_id}/messages")
def get_session_messages(
session_id: str,
patient_service: PatientService = Depends(get_patient_service),
user: dict = Depends(get_current_user)
):
"""Retrieve all raw messages for a given session to continue a chat."""
messages = patient_service.get_session_messages(session_id)
return {"messages": messages}
_BLOCKED_PATH_FRAGMENTS = {
".streamlit", ".env", "secrets.toml", "config.toml", ".git", "wp-admin", ".well-known"
}
@router.get("/{full_path:path}", response_class=HTMLResponse)
def catch_all(request: Request, full_path: str):
"""
Catch-all route to support History API (clean URLs) in the frontend SPA.
Returns 404 for known config/secret paths probed by bots (e.g. .streamlit/secrets.toml).
Otherwise serves index.html so the frontend JS handles SPA routing.
"""
if any(fragment in full_path for fragment in _BLOCKED_PATH_FRAGMENTS):
return Response(status_code=404)
return templates.TemplateResponse(request, "index.html")
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