from fastapi import APIRouter, Depends, HTTPException, status
from pydantic import BaseModel

from app.auth import create_access_token, get_current_user
from app.config import settings

router = APIRouter(prefix="/api/auth", tags=["auth"])


class LoginRequest(BaseModel):
    username: str
    password: str


class TokenResponse(BaseModel):
    access_token: str
    token_type: str = "bearer"


class UserResponse(BaseModel):
    username: str


@router.post("/login", response_model=TokenResponse)
def login(body: LoginRequest):
    if body.username != settings.AUTH_USERNAME or body.password != settings.AUTH_PASSWORD:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid credentials",
        )
    token = create_access_token(body.username)
    return TokenResponse(access_token=token)


@router.get("/me", response_model=UserResponse)
def me(username: str = Depends(get_current_user)):
    return UserResponse(username=username)