from math import floor
from random import uniform
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
import sqlalchemy
from sqlalchemy import text

app = FastAPI()

origins = ["http://localhost:5173"]
# noinspection PyTypeChecker
app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

engine = sqlalchemy.create_engine("mariadb+mariadbconnector://cflsxjw:1212@127.0.0.1:3306/BOOK_DEMO")
@app.get("/")
async def root():
    return {"message": "Hello World"}


@app.get("/hello/{name}")
async def say_hello(name: str):
    return {"message": f"Hello {name}"}

@app.get("/get_random_stu")
async def get_random_stu():
    with engine.connect() as c:
        stu = c.execute(text("SELECT sno, sname FROM stu_info")).fetchall()
        size = stu.__len__()
    return {"sno": stu[floor(uniform(0, size - 1))][0], "sname": stu[floor(uniform(0, size - 1))][1]}