main.py

from typing import List
from fastapi import FastAPI, Depends, HTTPException
from sqlalchemy.orm import Session
from database import SessionLocal, engine
import crud
import models
import schemas

models.Base.metadata.create_all(bind=engine)
app=FastAPI()
def get_db():
    db=SessionLocal()
    try:
        yield db
    finally:
        db.close()

@app.post("/users/")
def create_user(user: schemas.UserCreate,db:Session=Depends(get_db)):
    db_user=crud.get_user_by_email(db,email=user.email)
    if db_user:
        raise HTTPException(status_code=400,detail="Email already Exists")
    return crud.create_user(db=db,user=user)

@app.get("/users/")
def get_users(skip: int =0, limit: int=100, db:Session=Depends(get_db)):
    users=crud.get_users(db,skip=skip,limit=limit)
    return users

@app.get("/users/{user_id}")
def read_a_user(user_id: int, db: Session=Depends(get_db)):
    db_user=crud.get_user(db,user_id=user_id)
    if db_user is None:
        raise HTTPException(status_code=400,detail="User Does Not Exists")
    return db_user

@app.post("/users/{user_id}/items/")
def create_item_for_user(user_id: int,item: schemas.ItemCreate,db: Session=Depends(get_db)):
    return crud.create_user_item(db=db,item=item,user_id=user_id)

@app.get("/users/{user_id}/item/")
def get_item_for_user(user_id: int , db: Session=Depends(get_db)):
    return crud.get_items(db=db,user_id=user_id)