core/features/posts/common/src/commonMain/kotlin/dev/inmo/postssystem/features/posts/common/Post.kt

package dev.inmo.postssystem.features.posts.common

import com.soywiz.klock.DateTime
import dev.inmo.postssystem.features.common.common.DateTimeSerializer
import dev.inmo.postssystem.features.content.common.Content
import dev.inmo.postssystem.features.content.common.ContentId
import kotlinx.serialization.Polymorphic
import kotlinx.serialization.Serializable
import kotlin.jvm.JvmInline

/**
 * Identifier of [RegisteredPost] in system
 */
@Serializable
@JvmInline
value class PostId(val long: Long) {
    override fun toString(): String = long.toString()
}
typealias ContentIds = List<ContentId>

/**
 * Base interface for creating of new post
 *
 * @see NewPost
 * @see RegisteredPost
 */
@Serializable
sealed interface Post {
    val content: ContentIds
}

/**
 * This type of [Post] should be used in case you wish to register new post in system
 */
@Serializable
data class NewPost(
    override val content: ContentIds
) : Post

/**
 * Registered [Post]
 */
@Serializable
data class RegisteredPost(
    val id: PostId,
    override val content: ContentIds,
    @Serializable(DateTimeSerializer::class)
    val creationDate: DateTime
) : Post

@Serializable
data class PostWithContent(
    val post: Post,
    val content: List<@Polymorphic Content>
)

@Serializable
data class RegisteredPostWithContent(
    val post: RegisteredPost,
    val content: List<@Polymorphic Content>
)