first commit

app/core/config.py

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+from __future__ import annotations
+from pydantic_settings import BaseSettings
+from pydantic import Field
+from dotenv import load_dotenv
+
+load_dotenv()
+
+
+class Settings(BaseSettings):
+    model_config = {
+        "env_file": ".env",
+        "extra": "allow",
+    }
+
+    # Read DATABASE_URL from environment via model_config; avoid using Field(..., env=...)
+    DATABASE_URL: str = "sqlite:///./dev.db"
+    JWT_SECRET: str
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 15
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 30
+
+    GOOGLE_CLIENT_ID: str | None = None
+    GOOGLE_CLIENT_SECRET: str | None = None
+    GOOGLE_REDIRECT_URL: str | None = None
+
+    GITHUB_CLIENT_ID: str | None = None
+    GITHUB_CLIENT_SECRET: str | None = None
+    GITHUB_REDIRECT_URL: str | None = None
+
+    SERVER_NAME: str = "localhost:8000"
+    DEBUG: bool = True
+
+
+settings = Settings()

app/core/oauth.py

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+from urllib.parse import urlencode
+from typing import Dict
+
+from app.core.config import settings
+
+
+def google_authorize_url(state: str = "state") -> str:
+    params = {
+        "client_id": settings.GOOGLE_CLIENT_ID,
+        "redirect_uri": settings.GOOGLE_REDIRECT_URL,
+        "response_type": "code",
+        "scope": "openid email profile",
+        "state": state,
+        "access_type": "offline",
+        "prompt": "consent",
+    }
+    return "https://accounts.google.com/o/oauth2/v2/auth?" + urlencode(params)
+
+
+def github_authorize_url(state: str = "state") -> str:
+    params = {
+        "client_id": settings.GITHUB_CLIENT_ID,
+        "redirect_uri": settings.GITHUB_REDIRECT_URL,
+        "scope": "user:email",
+        "state": state,
+    }
+    return "https://github.com/login/oauth/authorize?" + urlencode(params)

app/core/security.py

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+from datetime import datetime, timedelta, timezone
+from typing import Tuple
+
+import jwt
+from argon2 import PasswordHasher
+
+from app.core.config import settings
+
+ph = PasswordHasher()
+
+
+def hash_password(password: str) -> str:
+    return ph.hash(password)
+
+
+def verify_password(hash: str, password: str) -> bool:
+    try:
+        return ph.verify(hash, password)
+    except Exception:
+        return False
+
+
+def create_access_token(sub: str) -> Tuple[str, datetime]:
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    payload = {"sub": sub, "exp": expire}
+    token = jwt.encode(payload, settings.JWT_SECRET, algorithm=settings.ALGORITHM)
+    return token, expire
+
+
+def create_refresh_token(sub: str) -> Tuple[str, datetime]:
+    expire = datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    payload = {"sub": sub, "exp": expire}
+    token = jwt.encode(payload, settings.JWT_SECRET, algorithm=settings.ALGORITHM)
+    return token, expire
+
+
+def decode_token(token: str) -> dict:
+    return jwt.decode(token, settings.JWT_SECRET, algorithms=[settings.ALGORITHM])