/*
 * Copyright 2019 New Vector Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package im.vector.matrix.android.internal.di

import androidx.annotation.Nullable
import com.squareup.moshi.JsonAdapter
import com.squareup.moshi.JsonQualifier
import com.squareup.moshi.Moshi
import com.squareup.moshi.Types
import java.lang.reflect.Type

@Retention(AnnotationRetention.RUNTIME)
@JsonQualifier
annotation class SerializeNulls {
    companion object {
        val JSON_ADAPTER_FACTORY: JsonAdapter.Factory = object : JsonAdapter.Factory {
            @Nullable
            override fun create(type: Type, annotations: Set<Annotation>, moshi: Moshi): JsonAdapter<*>? {
                val nextAnnotations = Types.nextAnnotations(annotations, SerializeNulls::class.java)
                        ?: return null
                return moshi.nextAdapter<Any>(this, type, nextAnnotations).serializeNulls()
            }
        }
    }
}
