com.github.messenger4j.internal.gson.GsonUtil Maven / Gradle / Ivy

package com.github.messenger4j.internal.gson;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import java.time.Instant;
import java.util.Optional;

/**
 * @author Max Grabenhorst
 * @since 1.0.0
 */
public final class GsonUtil {

  private GsonUtil() {}

  private static Optional getProperty(
      JsonObject jsonObject, Constants... propertyPath) {
    JsonObject internalValue = jsonObject;
    for (int i = 0; i <= propertyPath.length - 2; i++) {
      final JsonElement property = internalValue.get(propertyPath[i].value());
      if (property == null || !property.isJsonObject()) {
        return Optional.empty();
      }
      internalValue = property.getAsJsonObject();
    }
    final JsonElement property = internalValue.get(propertyPath[propertyPath.length - 1].value());
    return property == null || property.isJsonNull() ? Optional.empty() : Optional.of(property);
  }

  public static boolean hasProperty(JsonObject jsonObject, Constants... propertyPath) {
    return getProperty(jsonObject, propertyPath).isPresent();
  }

  public static Optional getPropertyAsString(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsString);
  }

  public static Optional getPropertyAsBoolean(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsBoolean);
  }

  public static Optional getPropertyAsInt(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsInt);
  }

  public static Optional getPropertyAsLong(JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsLong);
  }

  public static Optional getPropertyAsInstant(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional longValue = getPropertyAsLong(jsonObject, propertyPath);
    return longValue.map(Instant::ofEpochMilli);
  }

  public static Optional getPropertyAsDouble(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsDouble);
  }

  public static Optional getPropertyAsFloat(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsFloat);
  }

  public static Optional getPropertyAsJsonArray(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsJsonArray);
  }

  public static Optional getPropertyAsJsonObject(
      JsonObject jsonObject, Constants... propertyPath) {
    final Optional jsonElement = getProperty(jsonObject, propertyPath);
    return jsonElement.map(JsonElement::getAsJsonObject);
  }

  /**
   * @author Max Grabenhorst
   * @since 1.0.0
   */
  public enum Constants {
    PROP_OBJECT("object"),
    PROP_ENTRY("entry"),
    PROP_MESSAGING("messaging"),
    PROP_SENDER("sender"),
    PROP_RECIPIENT("recipient"),
    PROP_ID("id"),
    PROP_TIMESTAMP("timestamp"),
    PROP_OPTIN("optin"),
    PROP_MESSAGE("message"),
    PROP_MID("mid"),
    PROP_IS_ECHO("is_echo"),
    PROP_QUICK_REPLY("quick_reply"),
    PROP_TEXT("text"),
    PROP_ATTACHMENTS("attachments"),
    PROP_PAYLOAD("payload"),
    PROP_TYPE("type"),
    PROP_URL("url"),
    PROP_COORDINATES("coordinates"),
    PROP_LAT("lat"),
    PROP_LONG("long"),
    PROP_REF("ref"),
    PROP_USER_REF("user_ref"),
    PROP_APP_ID("app_id"),
    PROP_METADATA("metadata"),
    PROP_POSTBACK("postback"),
    PROP_ACCOUNT_LINKING("account_linking"),
    PROP_STATUS("status"),
    PROP_AUTHORIZATION_CODE("authorization_code"),
    PROP_READ("read"),
    PROP_WATERMARK("watermark"),
    PROP_DELIVERY("delivery"),
    PROP_MIDS("mids"),
    PROP_RECIPIENT_ID("recipient_id"),
    PROP_MESSAGE_ID("message_id"),
    PROP_ATTACHMENT_ID("attachment_id"),
    PROP_ERROR("error"),
    PROP_CODE("code"),
    PROP_FB_TRACE_ID("fbtrace_id"),
    PROP_RESULT("result"),
    PROP_FIRST_NAME("first_name"),
    PROP_LAST_NAME("last_name"),
    PROP_PROFILE_PIC("profile_pic"),
    PROP_LOCALE("locale"),
    PROP_TIMEZONE("timezone"),
    PROP_GENDER("gender"),
    PROP_TITLE("title"),
    PROP_REFERRAL("referral"),
    PROP_SOURCE("source"),
    PROP_AD_ID("ad_id"),
    PROP_NLP("nlp"),
    PROP_ENTITIES("entities"),
    PROP_PRIOR_MESSAGE("prior_message"),
    PROP_IDENTIFIER("identifier"),
    PROP_GAME_PLAY("game_play"),
    PROP_GAME_ID("game_id"),
    PROP_PLAYER_ID("player_id"),
    PROP_CONTEXT_TYPE("context_type"),
    PROP_CONTEXT_ID("context_id"),
    PROP_SCORE("score");

    private final String value;

    Constants(String value) {
      this.value = value;
    }

    String value() {
      return value;
    }
  }
}