com.stripe.model.BalanceTransactionDeserializer Maven / Gradle / Ivy

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Stripe Java Bindings
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package com.stripe.model;

import com.google.gson.FieldNamingPolicy;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;

import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

public class BalanceTransactionDeserializer implements JsonDeserializer {

  static final Map> sourceObjMap = new HashMap<>();

  static {
    sourceObjMap.put("application_fee", ApplicationFee.class);
    sourceObjMap.put("charge", Charge.class);
    sourceObjMap.put("dispute", Dispute.class);
    sourceObjMap.put("fee_refund", FeeRefund.class);
    sourceObjMap.put("issuing.authorization", com.stripe.model.issuing.Authorization.class);
    sourceObjMap.put("issuing.transaction", com.stripe.model.issuing.Transaction.class);
    sourceObjMap.put("payout", Payout.class);
    sourceObjMap.put("refund", Refund.class);
    sourceObjMap.put("topup", Topup.class);
    sourceObjMap.put("transfer", Transfer.class);
    sourceObjMap.put("transfer_reversal", Reversal.class);
  }

  @Override
  public BalanceTransaction deserialize(JsonElement json, Type typeOfT,
      JsonDeserializationContext context) throws JsonParseException {
    if (json.isJsonNull()) {
      return null;
    }

    if (!json.isJsonObject()) {
      throw new JsonParseException(
          "BalanceTransaction type was not an object, which is problematic.");
    }

    JsonObject btAsJsonObject = json.getAsJsonObject();

    JsonElement source = btAsJsonObject.get("source");

    btAsJsonObject.remove("source");

    Gson gson = new GsonBuilder()
        .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
        .create();

    BalanceTransaction balanceTransaction = gson.fromJson(json, typeOfT);

    String sourceId = null;

    if (source.isJsonPrimitive()) {
      JsonPrimitive sourceJsonPrimitive = source.getAsJsonPrimitive();
      if (!sourceJsonPrimitive.isString()) {
        throw new JsonParseException(
            "Source field on a balance transaction was a primitive non-string type.");
      }
      sourceId = sourceJsonPrimitive.getAsString();
    } else if (source.isJsonObject()) {
      JsonObject sourceJsonObject = source.getAsJsonObject();
      JsonElement sourceIdEl = sourceJsonObject.get("id");
      sourceId = sourceIdEl != null ? sourceIdEl.getAsString() : null;
      JsonElement val = sourceJsonObject.get("object");
      if (val != null) {
        String type = val.getAsString();
        Class sourceObjClass = sourceObjMap.get(type);
        if (sourceObjClass != null) {
          HasId sourceObj = context.deserialize(source, sourceObjClass);
          balanceTransaction.setSourceObject(sourceObj);
        }
      }
    } else if (!source.isJsonNull()) {
      throw new JsonParseException(
          "Source field on a balance transaction was a non-primitive, non-object type.");
    }

    balanceTransaction.setSource(sourceId);

    return balanceTransaction;
  }
}