from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from routers import max_subarray_router

app = FastAPI(title="Algorithm Platform API")

# Allow CORS for frontend
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # In production, replace with specific frontend origin
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

@app.get("/")
def read_root():
    return {"message": "Welcome to Algorithm Verification Platform API"}

app.include_router(max_subarray_router.router)
from routers import interval_scheduling_router
app.include_router(interval_scheduling_router.router)
from routers import n_queens_router
app.include_router(n_queens_router.router)
from routers import knapsack_router
app.include_router(knapsack_router.router)
from routers import min_path_sum_router
app.include_router(min_path_sum_router.router)
from routers import flower_planting_router
app.include_router(flower_planting_router.router)
from routers import advantage_shuffle_router
app.include_router(advantage_shuffle_router.router)