package com.vetti.socket;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.HandshakeInterceptor;

import javax.servlet.http.HttpServletRequest;
import java.util.Map;

@Configuration
@EnableWebSocket
public class FileReceiverConfig implements WebSocketConfigurer {

    @Bean
    public FileReceiverWebSocketHandler fileReceiverWebSocketHandler() {
        return new FileReceiverWebSocketHandler();
    }

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(fileReceiverWebSocketHandler(), "/voice-websocket")
                .addInterceptors(handshakeInterceptor())
                .setAllowedOrigins("*"); // 生产环境需替换为具体域名
    }

    @Bean
    public HandshakeInterceptor handshakeInterceptor() {
        return new HandshakeInterceptor() {
            @Override
            public boolean beforeHandshake(org.springframework.http.server.ServerHttpRequest request,
                                           org.springframework.http.server.ServerHttpResponse response,
                                           org.springframework.web.socket.WebSocketHandler wsHandler,
                                           Map<String, Object> attributes) throws Exception {
                if (request instanceof org.springframework.http.server.ServletServerHttpRequest) {
                    HttpServletRequest servletRequest =
                            ((org.springframework.http.server.ServletServerHttpRequest) request).getServletRequest();
                    String clientId = servletRequest.getParameter("clientId");
                    if (clientId != null && !clientId.isEmpty()) {
                        attributes.put("clientId", clientId);
                        return true;
                    }
                }
                return false;
            }

            @Override
            public void afterHandshake(org.springframework.http.server.ServerHttpRequest request,
                                       org.springframework.http.server.ServerHttpResponse response,
                                       org.springframework.web.socket.WebSocketHandler wsHandler,
                                       Exception exception) {
                // 握手后处理
            }
        };
    }
}