Sync fastapi docs from 50fa3f7c on 2026-01-11

2026-01-11 04:00:07 +00:00
parent a42b1ff04e
commit 95d1a394e6
1611 changed files with 12193 additions and 123004 deletions
@@ -0,0 +1,141 @@
+from datetime import datetime, timedelta, timezone
+from typing import Union
+
+import jwt
+from fastapi import Depends, FastAPI, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from jwt.exceptions import InvalidTokenError
+from pwdlib import PasswordHash
+from pydantic import BaseModel
+
+# to get a string like this run:
+# openssl rand -hex 32
+SECRET_KEY = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+
+fake_users_db = {
+    "johndoe": {
+        "username": "johndoe",
+        "full_name": "John Doe",
+        "email": "johndoe@example.com",
+        "hashed_password": "$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc",
+        "disabled": False,
+    }
+}
+
+
+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
+
+
+password_hash = PasswordHash.recommended()
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
+
+app = FastAPI()
+
+
+def verify_password(plain_password, hashed_password):
+    return password_hash.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password):
+    return password_hash.hash(password)
+
+
+def get_user(db, username: str):
+    if username in db:
+        user_dict = db[username]
+        return UserInDB(**user_dict)
+
+
+def authenticate_user(fake_db, username: str, password: str):
+    user = get_user(fake_db, username)
+    if not user:
+        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.now(timezone.utc) + expires_delta
+    else:
+        expire = datetime.now(timezone.utc) + 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 = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+        token_data = TokenData(username=username)
+    except InvalidTokenError:
+        raise credentials_exception
+    user = get_user(fake_users_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")
+async def login_for_access_token(
+    form_data: OAuth2PasswordRequestForm = Depends(),
+) -> Token:
+    user = authenticate_user(fake_users_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 Token(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("/users/me/items/")
+async def read_own_items(current_user: User = Depends(get_current_active_user)):
+    return [{"item_id": "Foo", "owner": current_user.username}]