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package eleme.openapi.sdk.oauth.parser;

import eleme.openapi.sdk.oauth.response.ErrorResponse;
import eleme.openapi.sdk.utils.json.ExceptionErrorListener;
import eleme.openapi.sdk.utils.json.JSONReader;
import eleme.openapi.sdk.utils.json.JSONValidatingReader;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class JsonConverter implements Converter {
    public  T toResponse(String rsp, Class clazz) {
        JSONReader reader = new JSONValidatingReader(new ExceptionErrorListener());
        Object rootObj = reader.read(rsp);
        if (rootObj instanceof Map) {
            Map rootJson = (Map) rootObj;
            return fromJson(rootJson, clazz);
        }
        if (rootObj instanceof List) {
            List rootJson = (List) rootObj;
            for (Object o : rootJson) {
                Map rj = (Map) o;
                return fromJson(rj, clazz);
            }
        }
        return null;
    }

    /**
     * 把JSON格式的数据转换为对象。
     *
     * @param    泛型领域对象
     * @param json  JSON格式的数据
     * @param clazz 泛型领域类型
     * @return 领域对象
     */
    public  T fromJson(final Map json, Class clazz)  {
        return Converters.convert(clazz, new Reader() {
            public boolean hasReturnField(Object name) {
                return json.containsKey(name);
            }

            public Object getPrimitiveObject(Object name) {
                return json.get(name);
            }

            public Object getObject(Object name, Class type)  {
                Object tmp = json.get(name);
                if (tmp instanceof Map) {
                    Map map = (Map) tmp;
                    return fromJson(map, type);
                } else {
                    return tmp;
                }
            }

            public List getListObjects(Object listName, Object itemName, Class subType)  {
                List