package com.nanri.aiimage.config;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * task-168：LLM 客户端配置接入契约（plan 10）。
 * 从 aiimage.http-client.* 读取超时/重试；默认值与现状一致；覆盖生效；
 * 非法值钳制。
 */
class LlmHttpConfigResolverTest {

    private HttpClientProperties properties;
    private LlmHttpConfigResolver resolver;

    @BeforeEach
    void setUp() {
        properties = new HttpClientProperties();
        resolver = new LlmHttpConfigResolver(properties);
    }

    @Test
    void timeoutFromConfigApplied() {
        assertEquals(10_000L, resolver.connectTimeoutMillis());
        assertEquals(60_000L, resolver.readTimeoutMillis());
        assertEquals(90_000L, resolver.callTimeoutMillis());
    }

    @Test
    void defaultValuesKept() {
        // 命名空间默认 = 现状基线（connect 10s / read 60s / call 90s / retry 3）
        assertEquals(10_000L, resolver.connectTimeoutMillis());
        assertEquals(60_000L, resolver.readTimeoutMillis());
        assertEquals(3, resolver.maxRetries());
        assertEquals(500L, resolver.baseRetryDelayMillis());
    }

    @Test
    void overrideTakesEffect() {
        properties.setConnectTimeoutMillis(30_000);
        properties.setReadTimeoutMillis(120_000);
        properties.setMaxRetries(5);

        assertEquals(30_000L, resolver.connectTimeoutMillis());
        assertEquals(120_000L, resolver.readTimeoutMillis());
        assertEquals(5, resolver.maxRetries());
    }

    @Test
    void callTimeoutReflectsTotal() {
        properties.setCallTimeoutMillis(180_000);
        assertEquals(180_000L, resolver.callTimeoutMillis());
    }

    @Test
    void retryConfigReflected() {
        properties.setMaxRetries(0);
        assertEquals(0, resolver.maxRetries());
        properties.setMaxRetries(99);
        assertEquals(10, resolver.maxRetries(), "重试钳制到 10");
    }

    @Test
    void invalidTimeoutsClamped() {
        properties.setConnectTimeoutMillis(-1);
        assertEquals(1_000L, resolver.connectTimeoutMillis());
        properties.setReadTimeoutMillis(999_999_999L);
        assertEquals(3_600_000L, resolver.readTimeoutMillis());
    }

    @Test
    void resolverBindingWired() {
        assertTrue(resolver.connectTimeoutMillis() > 0);
        assertTrue(resolver.maxRetries() >= 0);
    }

    @Test
    void behaviorSameAsCurrentBaseline() {
        // 与 SimilarAsinProperties.llm 现状对比：connect 一致（10s）、重试一致（3）
        assertEquals(10_000L, resolver.connectTimeoutMillis());
        assertEquals(3, resolver.maxRetries());
    }
}