TypeAdapter for handling cases where JSON might contain an object or array.

ArrayOfUpdateTypeAdapter.kt

package io.sjm.dankbot.telegram.json

import com.google.gson.*
import io.sjm.dankbot.telegram.Chat
import io.sjm.dankbot.telegram.Update
import java.lang.reflect.Type
import java.util.*

public class ArrayOfUpdateTypeAdapter : JsonDeserializer<Array<Update>> {
  @throws(JsonParseException::class)
  override fun deserialize(elem: JsonElement, t: Type, context: JsonDeserializationContext): Array<Update> {
    val vals = ArrayList<Update>();
    if (elem.isJsonArray()) {
      for (e in elem.getAsJsonArray()) {
        vals.add(context.deserialize<Update>(e, javaClass<Update>()) as Update)
      }
    } else if (elem.isJsonObject()) {
      vals.add(context.deserialize<Update>(elem, javaClass<Update>()) as Update)
    }
    return Array<Update>(vals.size(), { i -> vals.get(i) });
  }
}