Update 2025-04-17_20:32:52

main.py

@@ -0,0 +1,45 @@
+from fastapi import FastAPI, Form
+from fastapi.responses import FileResponse, JSONResponse
+from fastapi.staticfiles import StaticFiles
+import random
+
+app = FastAPI()
+
+app.mount("/static", StaticFiles(directory="static"), name="static")
+
+user_state = {}
+
+@app.get("/")
+def index():
+    return FileResponse("static/index.html")
+
+@app.get("/api/challenge")
+def challenge(username: str):
+    a1, b1 = random.randint(1,10), random.randint(1,10)
+    a2, b2 = random.randint(1,10), random.randint(1,10)
+    result = a1 * b1 + a2 * b2
+    user_state[username] = {"sum": result}
+    return {"task1": f"{a1} × {b1}", "task2": f"{a2} × {b2}"}
+
+@app.post("/api/submit")
+def submit(username: str = Form(...), answer: str = Form(...)):
+    print("[DEBUG] submit() called")
+    print("[DEBUG] username:", username)
+    print("[DEBUG] answer:", answer)
+    try:
+        parsed = int(answer)
+    except ValueError:
+        return JSONResponse(content={"result": "error", "message": "Answer must be a number"}, status_code=400)
+
+    user = user_state.get(username)
+    if not user or "sum" not in user:
+        return JSONResponse(content={"result": "error", "message": "No challenge found"}, status_code=400)
+
+    expected = user["sum"]
+    correct = parsed == expected
+
+    return JSONResponse(content={
+        "result": "correct" if correct else "wrong",
+        "correct": expected
+    })
+