/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package grails.plugin.springsecurity.rest

import groovy.transform.CompileStatic

import jakarta.servlet.ServletException
import jakarta.servlet.http.HttpServletRequest
import jakarta.servlet.http.HttpServletResponse

import org.springframework.security.core.Authentication
import org.springframework.security.web.authentication.AuthenticationSuccessHandler

import grails.plugin.springsecurity.rest.token.AccessToken
import grails.plugin.springsecurity.rest.token.rendering.AccessTokenJsonRenderer

/**
 * Generates a JSON response using a {@link AccessTokenJsonRenderer}.
 */
@CompileStatic
class RestAuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    AccessTokenJsonRenderer renderer

    /**
     * Called when a user has been successfully authenticated.
     *
     * @param request the request which caused the successful authentication
     * @param response the response
     * @param authentication the <tt>Authentication</tt> object which was created during the authentication process.
     */
    void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
        response.contentType = 'application/json'
        response.characterEncoding = 'UTF-8'
        response.addHeader 'Cache-Control', 'no-store'
        response.addHeader 'Pragma', 'no-cache'
        response << renderer.generateJson(authentication as AccessToken)
    }
}
