## Copyright © 2026 Olaf Kolkman
## SPDX-License-Identifier: GPL-3.0-or-later

from uuid import uuid4

from fastapi import APIRouter, HTTPException
from pydantic import BaseModel

from backend.app.database import get_connection, init_db
from backend.app.services.auth_service import authenticate_user
from backend.app.services.token_service import issue_token, revoke_token, validate_token

router = APIRouter()

init_db()


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


@router.post('/login')
def login(payload: LoginRequest):
    user = authenticate_user(payload.username, payload.password)
    if user is None:
        raise HTTPException(status_code=401, detail='Invalid username or password')

    token_data = issue_token(user['id'], user['username'])
    return {
        'access_token': token_data['access_token'],
        'token_type': 'bearer',
        'expires_at': token_data['expires_at'],
        'refresh_token': token_data['refresh_token'],
        'user': {'id': user['id'], 'username': user['username'], 'email': user['email']}
    }


@router.post('/logout')
def logout(payload: dict):
    token = payload.get('token')
    if not token:
        raise HTTPException(status_code=400, detail='Token is required')
    revoked = revoke_token(token)
    if not revoked:
        raise HTTPException(status_code=404, detail='Token not found or already revoked')
    return {'status': 'logged_out'}


@router.get('/me')
def current_user(token: str):
    info = validate_token(token)
    if info is None:
        raise HTTPException(status_code=401, detail='Token expired or invalid')
    with get_connection() as conn:
        user = conn.execute('SELECT * FROM users WHERE id = ?', (info['user_id'],)).fetchone()
    if user is None:
        raise HTTPException(status_code=404, detail='User not found')
    return {
        'id': user['id'],
        'username': user['username'],
        'email': user['email'],
        'is_admin': bool(user['is_admin']),
    }