/**
 * Copyright © 2016-2026 The Thingsboard Authors
 *
 * Licensed 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
 *
 *     http://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 org.thingsboard.server.config;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
import org.springframework.web.socket.server.standard.ServletServerContainerFactoryBean;
import org.thingsboard.server.controller.plugin.TbWebSocketHandler;
import org.thingsboard.server.queue.util.TbCoreComponent;

@Configuration
@TbCoreComponent
@EnableWebSocket
@RequiredArgsConstructor
@Slf4j
public class WebSocketConfiguration implements WebSocketConfigurer {

    public static final String WS_API_ENDPOINT = "/api/ws";
    public static final String WS_PLUGINS_ENDPOINT = "/api/ws/plugins/";
    private static final String WS_API_MAPPING = "/api/ws/**";

    private final WebSocketHandler wsHandler;

    @Value("${server.ws.max_text_message_buffer_size:32768}")
    private int maxTextMessageBufferSize;
    @Value("${server.ws.max_binary_message_buffer_size:32768}")
    private int maxBinaryMessageBufferSize;

    @Bean
    public ServletServerContainerFactoryBean createWebSocketContainer() {
        ServletServerContainerFactoryBean container = new ServletServerContainerFactoryBean();
        container.setMaxTextMessageBufferSize(maxTextMessageBufferSize);
        container.setMaxBinaryMessageBufferSize(maxBinaryMessageBufferSize);
        return container;
    }

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        if (!(wsHandler instanceof TbWebSocketHandler)) {
            log.error("TbWebSocketHandler expected but [{}] provided", wsHandler);
            throw new RuntimeException("TbWebSocketHandler expected but " + wsHandler + " provided");
        }
        registry.addHandler(wsHandler, WS_API_MAPPING)
                .setAllowedOriginPatterns("*");
    }

}
