json.MediaDeserializer.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2017/2021 e-voyageurs technologies
*
* 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 ai.tock.bot.connector.twitter.json
import ai.tock.bot.connector.twitter.model.Image
import ai.tock.bot.connector.twitter.model.Media
import ai.tock.bot.connector.twitter.model.Video
import ai.tock.shared.jackson.JacksonDeserializer
import ai.tock.shared.jackson.read
import ai.tock.shared.jackson.readValue
import com.fasterxml.jackson.core.JsonParser
import com.fasterxml.jackson.databind.DeserializationContext
import mu.KotlinLogging
internal class MediaDeserializer : JacksonDeserializer() {
companion object {
private val logger = KotlinLogging.logger {}
}
override fun deserialize(jp: JsonParser, ctxt: DeserializationContext): Media? {
data class MediaFields(
var image: String? = null,
var video: String? = null,
var imageType: String? = null,
var width: Int? = null,
var height: Int? = null,
var videoType: String? = null,
var other: EmptyJson? = null
)
val (image, video, imageType, width, height, videoType) = jp.read { fields, name ->
with(fields) {
when (name) {
"image" -> image = jp.readValue()
"video" -> video = jp.readValue()
"image_type" -> imageType = jp.readValue()
"w" -> width = jp.readValue()
"h" -> height = jp.readValue()
"video_type" -> videoType = jp.readValue()
else -> other = jp.readUnknownValue()
}
}
}
return if (image != null) {
Image(imageType!!, width!!, height!!)
} else if (video != null) {
Video(videoType!!)
} else {
logger.error { "unknown media type" }
null
}
}
}