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package org.openfact.ubl.data.xml;

import org.json.JSONArray;
import org.json.JSONObject;
import org.openfact.JSONObjectUtils;
import org.openfact.ubl.data.xml.annotations.JsonWrapper;
import org.openfact.ubl.data.xml.mappers.ObjectMapper;

import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

public class XMLAttributeContainer {

    public static XmlConverter simpleKey(Function caster, String... keys) {
        return json -> caster.apply(JSONObjectUtils.getObject(json, keys));
    }

    public static XmlConverter arrayKey(Function caster, String... keys) {
        return json -> {
            List result = new ArrayList();
            if (JSONObjectUtils.isJSONArray(json, keys)) {
                JSONArray array = JSONObjectUtils.getJSONArray(json, keys);
                Iterator it = array.iterator();
                while (it.hasNext()) {
                    result.add(it.next());
                }
            } else {
                result.add(JSONObjectUtils.getObject(json, keys));
            }
            return result.stream().map(caster).collect(Collectors.toList());
        };
    }

    public static XmlConverter arrayKey(Function caster, int arrayIndex, String... keys) {
        return json -> {
            List result = new ArrayList();
            if (JSONObjectUtils.isJSONArray(json, Arrays.copyOfRange(keys, 0, arrayIndex + 1))) {
                JSONArray array = JSONObjectUtils.getJSONArray(json, keys);
                Iterator it = array.iterator();
                while (it.hasNext()) {
                    JSONObject current = (JSONObject) it.next();
                    result.add(JSONObjectUtils.getObject(current, Arrays.copyOfRange(keys, arrayIndex + 1, keys.length)));
                }
            } else {
                result.add(JSONObjectUtils.getObject(json, keys));
            }
            return result.stream().map(caster).collect(Collectors.toList());
        };
    }

    public static  XmlConverter objectArrayKey(Class clazz, String... keys) {
        return json -> {

            List result = new ArrayList<>();

            if (JSONObjectUtils.isJSONArray(json, keys)) {
                JSONArray jsonArray = JSONObjectUtils.getJSONArray(json, keys);
                Iterator arrayIterator = jsonArray.iterator();
                while (arrayIterator.hasNext()) {
                    result.add((JSONObject) arrayIterator.next());
                }
            } else {
                result.add(JSONObjectUtils.getJSONObject(json, keys));
            }

            Annotation clazzAnnotation = clazz.getAnnotation(JsonWrapper.class);
            final JsonWrapper jsonWrapper = clazzAnnotation instanceof JsonWrapper ? (JsonWrapper) clazzAnnotation : null;

            return result.stream()
                    .map(jsonObject -> JSONObjectUtils.getJSONObject(jsonObject, jsonWrapper.key()))
                    .collect(Collectors.toList())

                    .stream()
                    .map(jsonObject -> ObjectMapper.mapObjectKey(clazz, jsonObject))
                    .collect(Collectors.toList());
        };
    }


}
    

    

    

            

    

            



    
    






    
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