package com.wok.supportbot.config;

import com.wok.supportbot.entity.AiModelConfig;
import com.wok.supportbot.service.AiModelConfigService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

/**
 * 模型配置加载器
 * 应用启动完成后，从数据库读取活跃配置并与 application.yml 中的配置进行一致性校验
 */
@Component
@Slf4j
public class ModelConfigLoader implements ApplicationListener<ApplicationReadyEvent> {

    @Autowired
    private AiModelConfigService aiModelConfigService;

    @Value("${spring.ai.dashscope.api-key:}")
    private String dashscopeApiKey;

    @Value("${spring.ai.dashscope.chat.options.model:qwen-turbo}")
    private String chatModelName;

    @Value("${spring.ai.dashscope.embedding.options.model:text-embedding-v2}")
    private String embeddingModelName;

    @Override
    public void onApplicationEvent(ApplicationReadyEvent event) {
        log.info("========== AI 模型配置校验 ==========");
        try {
            checkAppTypeConfig("CHAT", chatModelName);
            checkAppTypeConfig("PRODUCT_EXTRACT", chatModelName);
            checkAppTypeConfig("EMBEDDING", embeddingModelName);
            checkAppTypeConfig("RAG_REWRITE", chatModelName);
            log.info("========== AI 模型配置校验完成 ==========");
        } catch (Exception e) {
            log.warn("模型配置校验异常（不影响启动）: {}", e.getMessage());
        }
    }

    /**
     * 校验指定应用类型的数据库配置与 application.yml 配置是否一致
     *
     * @param appType          应用类型
     * @param ymlModelName     yml 中配置的模型名称
     */
    private void checkAppTypeConfig(String appType, String ymlModelName) {
        AiModelConfig activeConfig = aiModelConfigService.getActiveConfigWithFullKey(appType);
        if (activeConfig == null) {
            log.warn("  [{}] 数据库中无活跃配置，将使用 application.yml 默认值", appType);
            return;
        }

        String dbModelName = activeConfig.getModelName();
        String dbApiKey = activeConfig.getApiKey();
        boolean modelMismatch = !ymlModelName.equals(dbModelName);
        boolean apiKeyMismatch = !dashscopeApiKey.equals(dbApiKey);

        if (modelMismatch || apiKeyMismatch) {
            log.warn("  [{}] ⚠️ 数据库配置与 application.yml 不一致！", appType);
            log.warn("    DB  : modelName={}, apiKey={}****",
                    dbModelName,
                    AiModelConfigService.maskApiKey(dbApiKey));
            log.warn("    YML : modelName={}, apiKey={}****",
                    ymlModelName,
                    AiModelConfigService.maskApiKey(dashscopeApiKey));
            log.warn("    提示：请更新 application.yml 并重启服务使配置生效");
        } else {
            log.info("  [{}] ✅ 活跃配置 [{}] provider={} (与 application.yml 一致)",
                    appType, dbModelName, activeConfig.getProvider());
        }
    }
}