package io.delphi.qa.auto.awsmfrw.common_baby.gson;

import com.google.gson.*;
import io.delphi.qa.auto.awsmfrw.common_baby.IsaCommonMethods;

import java.lang.reflect.Type;
import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

public class MapDeserializer implements JsonDeserializer<Map<String, Object>>, IsaCommonMethods {

  public Map<String, Object> deserialize(
      JsonElement json, Type typeOfT, JsonDeserializationContext context)
      throws JsonParseException {
    Map<String, Object> m = new LinkedHashMap<String, Object>();
    JsonObject jo = json.getAsJsonObject();
    for (Map.Entry<String, JsonElement> mx : jo.entrySet()) {
      String key = mx.getKey();
      JsonElement v = mx.getValue();
      if (v.isJsonArray()) {
        m.put(key, gson.fromJson(v, List.class));
      } else if (v.isJsonPrimitive()) {
        Number num = null;
        ParsePosition position = new ParsePosition(0);
        String vString = v.getAsString();
        try {
          num = NumberFormat.getInstance(Locale.ROOT).parse(vString, position);
        } catch (Exception e) {
        }
        // Check if the position corresponds to the length of the string
        if (position.getErrorIndex() < 0 && vString.length() == position.getIndex()) {
          if (num != null) {
            m.put(key, num);
            continue;
          }
        }
        JsonPrimitive prim = v.getAsJsonPrimitive();
        if (prim.isBoolean()) {
          m.put(key, prim.getAsBoolean());
        } else if (prim.isString()) {
          m.put(key, prim.getAsString());
        } else {
          m.put(key, null);
        }

      } else if (v.isJsonObject()) {
        m.put(key, gson.fromJson(v, Map.class));
      }
    }
    return m;
  }
}