from fastapi import APIRouter, Depends, HTTPException
from fastapi.security import OAuth2PasswordRequestForm
from sqlalchemy.orm import Session
from pydantic import BaseModel
from app.database import get_db
from app.models.models import User
from app.auth import get_password_hash, verify_password, create_access_token, get_current_user

router = APIRouter()

class UserCreate(BaseModel):
    username: str
    email: str
    password: str

class Token(BaseModel):
    access_token: str
    token_type: str

@router.post("/register")
def register(user: UserCreate, db: Session = Depends(get_db)):
    if db.query(User).filter(User.username == user.username).first():
        raise HTTPException(status_code=400, detail="Username already exists")
    if db.query(User).filter(User.email == user.email).first():
        raise HTTPException(status_code=400, detail="Email already exists")
    
    db_user = User(
        username=user.username,
        email=user.email,
        hashed_password=get_password_hash(user.password)
    )
    db.add(db_user)
    db.commit()
    db.refresh(db_user)
    return {"message": "User created successfully"}

@router.post("/login", response_model=Token)
def login(form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(get_db)):
    user = db.query(User).filter(User.username == form_data.username).first()
    if not user or not verify_password(form_data.password, user.hashed_password):
        raise HTTPException(status_code=401, detail="Incorrect username or password")
    
    if user.is_banned:
        raise HTTPException(status_code=403, detail="Ваш аккаунт заблокирован")
    
    access_token = create_access_token(data={"sub": user.username})
    return {"access_token": access_token, "token_type": "bearer"}

@router.get("/me")
def get_current_user_info(current_user: User = Depends(get_current_user)):
    return {
        "id": current_user.id,
        "username": current_user.username,
        "email": current_user.email,
        "is_admin": current_user.is_admin,
        "is_owner": current_user.is_owner
    }