Browse the data

1from fastapi import FastAPI, HTTPException, Header
2from pydantic import BaseModel
3import random
4import string
5import uuid
6 
7app = FastAPI()
8 
9users = {}
10tokens = {}
11vocabulary = {1: {"word": "serendipity", "translation": "счастливая случайность", "example": "Finding that book was pure serendipity.", "difficulty": 3}}
12quiz_sessions = {}
13next_user_id = 1
14next_vocab_id = 2
15next_quiz_id = 1
16 
17class SignupRequest(BaseModel):
18    username: str
19    password: str
20 
21class LoginRequest(BaseModel):
22    username: str
23    password: str
24 
25class QuizAnswer(BaseModel):
26    session_id: int
27    question_id: int
28    answer: str
29 
30def generate_token():
31    return str(uuid.uuid4())
32 
33def get_current_user(authorization: str = Header(default=None)):
34    if not authorization:
35        raise HTTPException(status_code=401, detail="Missing Authorization header")
36    token = authorization.replace("Bearer ", "")
37    if token not in tokens:
38        raise HTTPException(status_code=401, detail="Invalid token")
39    return tokens[token]
40 
41@app.post("/signup")
42def signup(req: SignupRequest):
43    global next_user_id
44    if any(u["username"] == req.username for u in users.values()):
45        raise HTTPException(status_code=400, detail="Username already exists")
46    user_id = next_user_id
47    next_user_id += 1
48    users[user_id] = {"id": user_id, "username": req.username, "password": req.password}
49    return {"id": user_id, "username": req.username}
50 
51@app.post("/login")
52def login(req: LoginRequest):
53    for user in users.values():
54        if user["username"] == req.username and user["password"] == req.password:
55            token = generate_token()
56            tokens[token] = user["id"]
57            return {"token": token}
58    raise HTTPException(status_code=401, detail="Invalid credentials")
59 
60@app.get("/vocabulary/{id}")
61def get_vocabulary(id: int, authorization: str = Header(default=None)):
62    get_current_user(authorization)
63    if id not in vocabulary:
64        raise HTTPException(status_code=404, detail="Vocabulary not found")
65    return vocabulary[id]
66 
67@app.post("/vocabulary")
68def create_vocabulary(item: dict, authorization: str = Header(default=None)):
69    global next_vocab_id
70    get_current_user(authorization)
71    vocab_id = next_vocab_id
72    next_vocab_id += 1
73    vocabulary[vocab_id] = {"id": vocab_id, **item}
74    return vocabulary[vocab_id]
75 
76@app.get("/vocabulary")
77def get_random_vocabulary(authorization: str = Header(default=None)):
78    get_current_user(authorization)
79    if not vocabulary:
80        raise HTTPException(status_code=404, detail="No vocabulary available")
81    vocab = random.choice(list(vocabulary.values()))
82    return vocab
83 
84@app.post("/quiz/start")
85def start_quiz(authorization: str = Header(default=None)):
86    global next_quiz_id
87    user_id = get_current_user(authorization)
88    if len(vocabulary) < 10:
89        raise HTTPException(status_code=400, detail="Not enough vocabulary items (need at least 10)")
90    questions = random.sample(list(vocabulary.values()), 10)
91    session_id = next_quiz_id
92    next_quiz_id += 1
93    quiz_sessions[session_id] = {
94        "user_id": user_id,
95        "questions": questions,
96        "current_question": 0,
97        "score": 0
98    }
99    return {"session_id": session_id, "total_questions": 10}
100 
101@app.post("/quiz/answer")
102def answer_quiz(req: QuizAnswer, authorization: str = Header(default=None)):
103    user_id = get_current_user(authorization)
104    if req.session_id not in quiz_sessions:
105        raise HTTPException(status_code=404, detail="Quiz session not found")
106    session = quiz_sessions[req.session_id]
107    if session["user_id"] != user_id:
108        raise HTTPException(status_code=403, detail="Not your quiz")
109    if req.question_id < 0 or req.question_id >= len(session["questions"]):
110        raise HTTPException(status_code=400, detail="Invalid question ID")
111    question = session["questions"][req.question_id]
112    correct = question["word"]
113    is_correct = req.answer.strip().lower() == correct.lower()
114    if is_correct:
115        session["score"] += 1
116    return {
117        "correct_answer": correct,
118        "is_correct": is_correct,
119        "score": session["score"],
120        "total": len(session["questions"])
121    }

1fastapi
2uvicorn