Add summarize endpoint to app, update Dockerfile to include .env, and expand requirements.txt

.gitignore

@@ -0,0 +1,3 @@
+venv
+.env
+__pycache__

Dockerfile

@@ -12,5 +12,8 @@ WORKDIR /app
 COPY --chown=user ./requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
+# Copy .env file
+COPY --chown=user .env .env
+
 COPY --chown=user . /app
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]

app.py

@@ -1,7 +1,23 @@
 from fastapi import FastAPI
+from langgraph.agents.summarize_agent.graph import graph   
+from fastapi import Request
+
+
 
 app = FastAPI()
 
 @app.get("/")
 def greet_json():
-    return {"Hello": "World!"}
+    return {"Hello": "World!"}
+
+
+
+@app.post("/summarize")
+async def summarize(request: Request):
+    data = await request.json()
+    user_input = data.get("user_input")
+    return  graph.invoke({"user_input": user_input})
+
+
+
+

langgraph/agents/summarize_agent/graph.py

@@ -0,0 +1,56 @@
+from typing import TypedDict
+import os 
+from dotenv import load_dotenv
+from google import genai
+from langgraph.graph import StateGraph
+from google.genai import types
+load_dotenv()
+
+GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
+
+
+
+
+
+
+class State(TypedDict):
+    user_input: str
+    summary: str
+
+
+def summarize_user_input(state: State) -> State:
+    client = genai.Client(api_key=GOOGLE_API_KEY)
+    response = client.models.generate_content(
+    model="gemini-2.0-flash", contents=state["user_input"], config=types.GenerateContentConfig(
+        system_instruction="You are a helpful assistant that summarizes user input.")
+    )
+    
+    state["summary"] = response.text
+    return state
+
+
+
+builder = StateGraph(State)
+
+builder.add_node("summarize", summarize_user_input)
+
+builder.add_edge("__start__", "summarize")
+builder.add_edge("summarize", "__end__")
+
+graph = builder.compile()
+graph.name = "summarize_agent"
+
+
+
+
+
+
+
+ 
+    
+    
+    
+    
+    
+
+

requirements.txt

@@ -1,2 +1,8 @@
 fastapi
 uvicorn[standard]
+langgraph 
+langsmith
+google-genai
+
+python-dotenv
+