gistfile1.txt

enum class EnvelopeType {
    CHAT_MESSAGE, CHAT_NEW, MESSAGE_STATUS, CHAT_UPDATED
}

enum class PayloadType {
    TEXT_MESSAGE, IMAGE_MESSAGE
}

enum class MessageStatusType {
    FAILED, SENDING, DELIVERED_TO_SERVER, DELIVERED_TO_RECIPIENT, READED, DELETED
}

enum class ChatUpdatedReason {
    RECIPIENT_ADDED, RECIPIENT_DELETED
}

interface Envelope

data class ChatMessage (
        @SerializedName("message_id") val messageId: String,
        @SerializedName("sender_id") val senderId: String,
        @SerializedName("sender_name") val senderName: String,
        @SerializedName("timestamp") val timestamp: Long,
        @SerializedName("chat_id") val chatId: String,
        @SerializedName("payload_type") val payloadType: PayloadType,
        @SerializedName("payload") val data: Payload
) : Envelope

data class ChatNew (
        @SerializedName("chat_id")  val chatId: String,
        @SerializedName("created_at") val created: Long,
        @SerializedName("recipients") val recipients: List<String>
) : Envelope

data class ChatUpdayed (
        @SerializedName("chat_id")  val chatId: String,
        @SerializedName("created_at") val created: Long,
        @SerializedName("updated_at") val updated: Long,
        @SerializedName("recipients") val recipients: List<String>,
        @SerializedName("reason") val reason: ChatUpdatedReason
)

data class MessageStatus (
        @SerializedName("chat_id")  val chatId: String,
        @SerializedName("message_id") val messageId: String,
        @SerializedName("status") val status: MessageStatusType
) : Envelope

data class Event (
        @SerializedName("event_id") val eventId: String,
        @SerializedName("sync_id") val syncId: String,
        @SerializedName("envelope_type") val envelopeType: EnvelopeType,
        @SerializedName("envelope") val envelope: Envelope
)

interface Payload

data class TextMessage (
        @SerializedName("message") val message: String
) : Payload

data class ImageMessage (
        @SerializedName("original") val original: String,
        @SerializedName("original_size") val originalSize: Long,
        @SerializedName("thumbnail") val thumbnail: String,
        @SerializedName("thumbnail_size") val thumbnailSize: String,
        @SerializedName("media_type") val mediaType: String
)