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main.py
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main.py
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from datetime import datetime, timedelta
from tabnanny import check
from typing import Union
from fastapi import Depends, FastAPI, HTTPException, status, Form
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from jose import JWTError, jwt
from passlib.context import CryptContext
from pydantic import BaseModel
import json
from deta import Deta # Import Deta
deta = Deta("c0p1a406_AXVnCDjdozsWrTF8Pw8xdstHgUTm2AV5")
# to get a string like this run:
# openssl rand -hex 32
SECRET_KEY = "Ffff166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 30
class Token(BaseModel):
access_token: str
token_type: str
class TokenData(BaseModel):
username: Union[str, None] = None
class User(BaseModel):
username: str
email: Union[str, None] = None
full_name: Union[str, None] = None
disabled: Union[bool, None] = None
class UserInDB(User):
hashed_password: str
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
deta = Deta("c0p1a406_AXVnCDjdozsWrTF8Pw8xdstHgUTm2AV5")
db = deta.Base("user_db")
db_todo = deta.Base("todo_db")
app = FastAPI()
def verify_password(plain_password, hashed_password):
return pwd_context.verify(plain_password, hashed_password)
def get_password_hash(password):
return pwd_context.hash(password)
def get_user_db(username: str):
catch = db.fetch(query=[{"id": username}])
jsonData = json.dumps(catch.__dict__)
jsonDataLoad = json.loads(jsonData)
checker = bool(jsonDataLoad["_items"])
if checker:
jsonDataLoadContent = jsonDataLoad["_items"][0]["detail"]
UserInDB(**jsonDataLoadContent)
return UserInDB(**jsonDataLoadContent)
else:
return False
def authenticate_user_db(username: str, password: str):
user = get_user_db(username)
if user == False:
return False
if not verify_password(password, user.hashed_password):
return False
return user
def create_access_token(data: dict, expires_delta: Union[timedelta, None] = None):
to_encode = data.copy()
if expires_delta:
expire = datetime.utcnow() + expires_delta
else:
expire = datetime.utcnow() + timedelta(minutes=15)
to_encode.update({"exp": expire})
encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
return encoded_jwt
async def get_current_user(token: str = Depends(oauth2_scheme)):
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
try:
payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
username: str = payload.get("sub")
if username is None:
raise credentials_exception
token_data = TokenData(username=username)
except JWTError:
raise credentials_exception
user = get_user_db(username=token_data.username)
if user is None:
raise credentials_exception
return user
async def get_current_active_user(current_user: User = Depends(get_current_user)):
if current_user.disabled:
raise HTTPException(status_code=400, detail="Inactive user")
return current_user
@app.post("/token", response_model=Token)
async def login_for_access_token(form_data: OAuth2PasswordRequestForm = Depends()):
user = authenticate_user_db(form_data.username, form_data.password)
if not user:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Incorrect username or password",
headers={"WWW-Authenticate": "Bearer"},
)
access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
access_token = create_access_token(
data={"sub": user.username}, expires_delta=access_token_expires
)
return {"access_token": access_token, "token_type": "bearer"}
@app.get("/users/me/", response_model=User)
async def read_users_me(current_user: User = Depends(get_current_active_user)):
return current_user
@app.get("/")
async def root():
return {"Test": "OK"}
@app.post("/register")
async def register_user(
username: str = Form(),
password: str = Form(),
email: str = Form(),
fullname: str = Form(),
):
check_user = get_user_db(username)
if check_user == False:
hashed_password = get_password_hash(password)
db.insert(
{
"id": username,
"detail": {
"username": username,
"full_name": fullname,
"email": email,
"hashed_password": hashed_password,
"disabled": False,
},
}
)
return {
"username": username,
"email": email,
"fullname": fullname,
"status": "created",
}
else:
return {"status": "account has been already"}
@app.get("/users/me/items")
async def read_own_items(current_user: User = Depends(get_current_active_user)):
catch = db_todo.fetch(query=[{"owner": current_user.username}])
jsonData = json.dumps(catch.__dict__)
jsonDataLoad = json.loads(jsonData)
checker = bool(jsonDataLoad["_items"])
if checker:
jsonDataLoadContent = jsonDataLoad["_items"]
return {"data": jsonDataLoadContent}
else:
return False
@app.post("/users/me/items")
async def write_own_items(
current_user: User = Depends(get_current_active_user), todo: str = Form()
):
dt_now = datetime.now()
dt_string = dt_now.strftime("%d/%m/%Y %H:%M:%S")
db_todo.insert(
{"owner": current_user.username, "todo": todo, "timestamp": dt_string}
)
return {"owner": current_user.username, "todo": todo, "timestamp": dt_string}
@app.delete("/users/me/items")
async def delete(
current_user: User = Depends(get_current_active_user), key: str = Form()
):
db_todo.delete(key)
return {"status": "data has been deleted"}
@app.put("/users/me/items")
async def update(
current_user: User = Depends(get_current_active_user),
key: str = Form(),
todo: str = Form(),
):
dt_now = datetime.now()
dt_string = dt_now.strftime("%d/%m/%Y %H:%M:%S")
db_todo.update({"todo": todo, "timestamp": dt_string}, key)
return {"status": "data has been updated"}