feat: リモートのNoteのDelete Activityの受信に対応

src/main/kotlin/dev/usbharu/hideout/activitypub/domain/model/Delete.kt

@@ -0,0 +1,49 @@
+package dev.usbharu.hideout.activitypub.domain.model
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize
+import dev.usbharu.hideout.activitypub.domain.model.objects.Object
+import dev.usbharu.hideout.activitypub.domain.model.objects.ObjectDeserializer
+
+open class Delete : Object {
+    @JsonDeserialize(using = ObjectDeserializer::class)
+    var `object`: Object? = null
+    var published: String? = null
+
+    constructor(
+        type: List<String> = emptyList(),
+        name: String = "Delete",
+        actor: String,
+        id: String,
+        `object`: Object,
+        published: String?
+    ) : super(add(type, "Delete"), name, actor, id) {
+        this.`object` = `object`
+        this.published = published
+    }
+
+    protected constructor() : super()
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is Delete) return false
+        if (!super.equals(other)) return false
+
+        if (`object` != other.`object`) return false
+        if (published != other.published) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = super.hashCode()
+        result = 31 * result + (`object`?.hashCode() ?: 0)
+        result = 31 * result + (published?.hashCode() ?: 0)
+        return result
+    }
+
+    override fun toString(): String {
+        return "Delete(`object`=$`object`, published=$published) ${super.toString()}"
+    }
+
+
+}

src/main/kotlin/dev/usbharu/hideout/activitypub/domain/model/Tombstone.kt

@@ -0,0 +1,12 @@
+package dev.usbharu.hideout.activitypub.domain.model
+
+import dev.usbharu.hideout.activitypub.domain.model.objects.Object
+
+open class Tombstone : Object {
+    constructor(
+        type: List<String> = emptyList(),
+        name: String = "Tombstone",
+        actor: String? = null,
+        id: String
+    ) : super(add(type, "Tombstone"), name, actor, id)
+}

src/main/kotlin/dev/usbharu/hideout/activitypub/domain/model/objects/ObjectDeserializer.kt

@@ -56,7 +56,7 @@ class ObjectDeserializer : JsonDeserializer<Object>() {
                 ExtendedActivityVocabulary.Arrive -> TODO()
                 ExtendedActivityVocabulary.Block -> TODO()
                 ExtendedActivityVocabulary.Create -> p.codec.treeToValue(treeNode, Create::class.java)
-                ExtendedActivityVocabulary.Delete -> TODO()
+                ExtendedActivityVocabulary.Delete -> p.codec.treeToValue(treeNode, Delete::class.java)
                 ExtendedActivityVocabulary.Dislike -> TODO()
                 ExtendedActivityVocabulary.Flag -> TODO()
                 ExtendedActivityVocabulary.Ignore -> TODO()
@@ -91,7 +91,7 @@ class ObjectDeserializer : JsonDeserializer<Object>() {
                 ExtendedActivityVocabulary.Place -> TODO()
                 ExtendedActivityVocabulary.Profile -> TODO()
                 ExtendedActivityVocabulary.Relationship -> TODO()
-                ExtendedActivityVocabulary.Tombstone -> TODO()
+                ExtendedActivityVocabulary.Tombstone -> p.codec.treeToValue(treeNode, Tombstone::class.java)
                 ExtendedActivityVocabulary.Video -> TODO()
                 ExtendedActivityVocabulary.Mention -> TODO()
                 ExtendedActivityVocabulary.Emoji -> p.codec.treeToValue(treeNode, Emoji::class.java)

src/main/kotlin/dev/usbharu/hideout/activitypub/service/activity/delete/APReceiveDeleteService.kt

@@ -0,0 +1,8 @@
+package dev.usbharu.hideout.activitypub.service.activity.delete
+
+import dev.usbharu.hideout.activitypub.domain.model.Delete
+import dev.usbharu.hideout.activitypub.interfaces.api.common.ActivityPubResponse
+
+interface APReceiveDeleteService {
+    suspend fun receiveDelete(delete: Delete): ActivityPubResponse
+}

src/main/kotlin/dev/usbharu/hideout/activitypub/service/activity/delete/APReceiveDeleteServiceImpl.kt

@@ -0,0 +1,31 @@
+package dev.usbharu.hideout.activitypub.service.activity.delete
+
+import dev.usbharu.hideout.activitypub.domain.exception.IllegalActivityPubObjectException
+import dev.usbharu.hideout.activitypub.domain.model.Delete
+import dev.usbharu.hideout.activitypub.interfaces.api.common.ActivityPubResponse
+import dev.usbharu.hideout.activitypub.interfaces.api.common.ActivityPubStringResponse
+import dev.usbharu.hideout.application.external.Transaction
+import dev.usbharu.hideout.core.domain.exception.FailedToGetResourcesException
+import dev.usbharu.hideout.core.domain.model.post.PostRepository
+import dev.usbharu.hideout.core.query.PostQueryService
+import io.ktor.http.*
+import org.springframework.stereotype.Service
+
+@Service
+class APReceiveDeleteServiceImpl(
+    private val postQueryService: PostQueryService,
+    private val postRepository: PostRepository,
+    private val transaction: Transaction
+) : APReceiveDeleteService {
+    override suspend fun receiveDelete(delete: Delete): ActivityPubResponse = transaction.transaction {
+        val deleteId = delete.`object`?.id ?: throw IllegalActivityPubObjectException("object.id is null")
+
+        val post = try {
+            postQueryService.findByApId(deleteId)
+        } catch (e: FailedToGetResourcesException) {
+            return@transaction ActivityPubStringResponse(HttpStatusCode.OK, "Resource not found or already deleted")
+        }
+        postRepository.delete(post.id)
+        return@transaction ActivityPubStringResponse(HttpStatusCode.OK, "Resource was deleted.")
+    }
+}

src/main/kotlin/dev/usbharu/hideout/activitypub/service/common/APService.kt

@@ -8,6 +8,7 @@ import dev.usbharu.hideout.activitypub.domain.model.Follow
 import dev.usbharu.hideout.activitypub.interfaces.api.common.ActivityPubResponse
 import dev.usbharu.hideout.activitypub.service.activity.accept.APAcceptService
 import dev.usbharu.hideout.activitypub.service.activity.create.APCreateService
+import dev.usbharu.hideout.activitypub.service.activity.delete.APReceiveDeleteService
 import dev.usbharu.hideout.activitypub.service.activity.follow.APReceiveFollowService
 import dev.usbharu.hideout.activitypub.service.activity.like.APLikeService
 import dev.usbharu.hideout.activitypub.service.activity.undo.APUndoService
@@ -180,7 +181,8 @@ class APServiceImpl(
     private val apAcceptService: APAcceptService,
     private val apCreateService: APCreateService,
     private val apLikeService: APLikeService,
-    @Qualifier("activitypub") private val objectMapper: ObjectMapper
+    @Qualifier("activitypub") private val objectMapper: ObjectMapper,
+    private val apReceiveDeleteService: APReceiveDeleteService
 ) : APService {
 
     val logger: Logger = LoggerFactory.getLogger(APServiceImpl::class.java)
@@ -234,6 +236,7 @@ class APServiceImpl(
             ActivityType.Create -> apCreateService.receiveCreate(objectMapper.readValue(json))
             ActivityType.Like -> apLikeService.receiveLike(objectMapper.readValue(json))
             ActivityType.Undo -> apUndoService.receiveUndo(objectMapper.readValue(json))
+            ActivityType.Delete -> apReceiveDeleteService.receiveDelete(objectMapper.readValue(json))
 
             else -> {
                 throw IllegalArgumentException("$type is not supported.")