feat: add login and user creation endpoints

backend/models.py

@@ -5,7 +5,7 @@ from sqlalchemy import Column, Integer, String, ForeignKey
 class Post(Base):
     __tablename__ = 'posts'
 
-    id = Column(Integer, primary_key=True)
+    id = Column(Integer, primary_key=True, index=True)
     thread_id = Column(Integer, ForeignKey("threads.id"))
     author = Column(String)
     title = Column(String)
@@ -15,7 +15,17 @@ class Post(Base):
 class Thread(Base):
     __tablename__ = 'threads'
 
-    id = Column(Integer, primary_key=True)
+    id = Column(Integer, primary_key=True, index=True)
     author = Column(String)
     title = Column(String)
     content = Column(String)
+
+
+class User(Base):
+    __tablename__ = 'users'
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String, unique=True)
+    email = Column(String, unique=True)
+    password = Column(String)
+    role = Column(String)

backend/requirements.txt

@@ -1,3 +1,7 @@
 fastapi
 uvicorn[standard]
 sqlalchemy
+passlib[bcrypt]
+pydantic
+starlette
+python-multipart

backend/routers/auth.py

@@ -1,8 +1,65 @@
-from fastapi import APIRouter
+from typing import Annotated
+from fastapi import APIRouter, Depends
+from pydantic import BaseModel
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+from starlette import status
+from fastapi.security import OAuth2PasswordRequestForm
+
+from models import User
+from database import SessionLocal
 
 router = APIRouter()
 
+bcrypt_context = CryptContext(schemes=['bcrypt'], deprecated='auto')
 
-@router.get('/auth/')
-async def get_user():
-    return {'user': 'authenticated'}
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+
+db_dependency = Annotated[Session, Depends(get_db)]
+
+
+def authenticate_user(username: str, password: str, db):
+    user = db.query(User).filter(User.username == username).first()
+    if not user:
+        return False
+    if not bcrypt_context.verify(password, user.password):
+        return False
+    return True
+
+
+class CreateUser(BaseModel):
+    username: str
+    email: str
+    password: str
+
+
+@router.post('/auth/create', status_code=status.HTTP_201_CREATED)
+async def create_user(db: db_dependency, data: CreateUser):
+    create_user_model = User(
+        username=data.username,
+        email=data.email,
+        password=bcrypt_context.hash(data.password),
+        role='admin'
+    )
+
+    db.add(create_user_model)
+    db.commit()
+
+
+@router.post('/auth/token', status_code=status.HTTP_200_OK)
+async def get_token(
+        form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
+        db: db_dependency
+):
+    user = authenticate_user(form_data.username, form_data.password, db)
+    if user:
+        return "you good fam"
+
+    return "failed authentication"