97 lines
2.6 KiB
Kotlin
97 lines
2.6 KiB
Kotlin
package com.meloda.fast.database
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import androidx.room.TypeConverter
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import com.google.gson.Gson
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import com.meloda.fast.api.model.VkMessage
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import com.meloda.fast.api.model.attachments.VkAttachment
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import org.json.JSONObject
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@Suppress("UnnecessaryVariable")
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class Converters {
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private companion object {
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private const val CACHE_SEPARATOR = "fastkruta228355"
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}
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@TypeConverter
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fun fromListVkMessageToString(messages: List<VkMessage>?): String? {
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if (messages == null) return null
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val string = messages.map { fromVkMessageToString(it)!! }.joinToString { CACHE_SEPARATOR }
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return string
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}
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@TypeConverter
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fun fromStringToListVkMessage(string: String?): List<VkMessage>? {
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if (string == null) return null
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if (string.contains(CACHE_SEPARATOR)) {
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val messages =
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string.split(CACHE_SEPARATOR).map { fromStringToVkMessage(it)!! }
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return messages
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}
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val message = fromStringToVkMessage(string)!!
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return listOf(message)
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}
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@TypeConverter
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fun fromVkMessageToString(message: VkMessage?): String? {
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if (message == null) return null
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return Gson().toJson(message)
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}
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@TypeConverter
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fun fromStringToVkMessage(string: String?): VkMessage? {
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if (string == null) return null
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return Gson().fromJson(string, VkMessage::class.java)
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}
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@TypeConverter
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fun fromListVkAttachmentToString(attachments: List<VkAttachment>?): String? {
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if (attachments == null) return null
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val string =
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attachments.map { fromVkAttachmentToString(it)!! }.joinToString { CACHE_SEPARATOR }
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return string
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}
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@TypeConverter
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fun fromStringToListVkAttachment(string: String?): List<VkAttachment>? {
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if (string == null) return null
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if (string.contains(CACHE_SEPARATOR)) {
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val attachments =
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string.split(CACHE_SEPARATOR).map { fromStringToVkAttachment(it)!! }
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return attachments
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}
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val attachment = fromStringToVkAttachment(string)!!
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return listOf(attachment)
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}
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@TypeConverter
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fun fromVkAttachmentToString(attachment: VkAttachment?): String? {
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if (attachment == null) return null
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return Gson().toJson(attachment)
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}
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@TypeConverter
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fun fromStringToVkAttachment(string: String?): VkAttachment? {
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if (string == null) return null
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val className = JSONObject(string).optString("className")
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return Gson().fromJson(string, Class.forName(className)) as VkAttachment?
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}
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}
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