package com.lincfusion.udyamlinc.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.web.client.RestClient;

import java.time.Duration;

/**
 * The HTTP client used for external feeds, and the scheduler that drives them.
 *
 * <p>Short, explicit timeouts are the point: a government endpoint that hangs
 * must fail the nightly job quickly, not hold a thread until someone notices.
 * Nothing in the request path uses this client — see ARCHITECTURE §2.1.
 */
@Configuration
@EnableScheduling
public class ExternalFeedConfig {

    @Value("${udyam.ingestion.http.connect-timeout-ms:10000}")
    private int connectTimeoutMs;

    @Value("${udyam.ingestion.http.read-timeout-ms:30000}")
    private int readTimeoutMs;

    /**
     * Built from {@link RestClient#builder()} rather than an injected
     * auto-configured {@code RestClient.Builder}, which Boot does not always
     * expose as a bean. It also keeps this client free of any global customiser
     * meant for the request path — the feed client's timeouts are deliberately
     * its own.
     */
    @Bean("externalFeedClient")
    public RestClient externalFeedClient() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(Duration.ofMillis(connectTimeoutMs));
        factory.setReadTimeout(Duration.ofMillis(readTimeoutMs));
        return RestClient.builder().requestFactory(factory).build();
    }
}