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package com.github.lianjiatech.retrofit.spring.boot.degrade;

import com.github.lianjiatech.retrofit.spring.boot.core.RetrofitClient;
import com.github.lianjiatech.retrofit.spring.boot.util.RetrofitUtils;
import org.springframework.context.EnvironmentAware;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.core.env.Environment;

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author 陈添明
 * @since 2022/5/1 9:54 下午
 */
public abstract class BaseRetrofitDegrade implements RetrofitDegrade, ResourceNameParser, EnvironmentAware {

    protected static final String HTTP_OUT = "HTTP_OUT";

    protected static final Map RESOURCE_NAME_CACHE = new ConcurrentHashMap<>(128);

    protected Environment environment;

    @Override
    public String parseResourceName(Method method, Class service) {
        String resourceName = RESOURCE_NAME_CACHE.get(method);
        if (resourceName != null) {
            return resourceName;
        }
        RetrofitClient retrofitClient =
                AnnotatedElementUtils.findMergedAnnotation(service, RetrofitClient.class);
        String baseUrl = RetrofitUtils.convertBaseUrl(retrofitClient, retrofitClient.baseUrl(), environment);
        HttpMethodPath httpMethodPath = parseHttpMethodPath(method);
        resourceName = formatResourceName(baseUrl, httpMethodPath);
        RESOURCE_NAME_CACHE.put(method, resourceName);
        return resourceName;
    }

    protected String formatResourceName(String baseUrl, HttpMethodPath httpMethodPath) {
        return String.format("%s:%s:%s", HTTP_OUT, httpMethodPath.getMethod(), baseUrl + httpMethodPath.getPath());
    }

    protected boolean isDefaultOrStatic(Method method) {
        if (method.isDefault()) {
            return true;
        }
        return Modifier.isStatic(method.getModifiers());
    }

    @Override
    public void setEnvironment(Environment environment) {
        this.environment = environment;
    }
}