package com.flightticket.config;

import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import java.time.Duration;

/**
 * Configuration for RestTemplate with timeouts and connection pooling
 * Requirements: 5.1, 6.2, 7.2
 */
@Configuration
public class RestTemplateConfig {
    
    /**
     * Create RestTemplate with configured timeouts
     * @return Configured RestTemplate instance
     */
    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder builder) {
        return builder
            .setConnectTimeout(Duration.ofSeconds(10))
            .setReadTimeout(Duration.ofSeconds(30))
            .requestFactory(this::clientHttpRequestFactory)
            .build();
    }
    
    /**
     * Configure HTTP request factory with connection settings
     * @return ClientHttpRequestFactory with configured settings
     */
    private ClientHttpRequestFactory clientHttpRequestFactory() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(10000); // 10 seconds
        factory.setReadTimeout(30000);    // 30 seconds
        return factory;
    }
}