feat: リアクション取り消しの実装を追加

src/main/kotlin/dev/usbharu/hideout/Application.kt

@@ -9,6 +9,7 @@ import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.config.ConfigData
 import dev.usbharu.hideout.domain.model.job.DeliverPostJob
 import dev.usbharu.hideout.domain.model.job.DeliverReactionJob
+import dev.usbharu.hideout.domain.model.job.DeliverRemoveReactionJob
 import dev.usbharu.hideout.domain.model.job.ReceiveFollowJob
 import dev.usbharu.hideout.plugins.*
 import dev.usbharu.hideout.repository.IUserRepository
@@ -144,4 +145,10 @@ fun Application.worker() {
             activityPubService.processActivity(this, it)
         }
     }
+
+    kJob.register(DeliverRemoveReactionJob) {
+        execute {
+            activityPubService.processActivity(this, it)
+        }
+    }
 }

src/main/kotlin/dev/usbharu/hideout/domain/model/job/HideoutJob.kt

@@ -25,5 +25,8 @@ object DeliverReactionJob : HideoutJob("DeliverReactionJob") {
 }
 
 object DeliverRemoveReactionJob : HideoutJob("DeliverRemoveReactionJob") {
-
+    val id = string("id")
+    val inbox = string("inbox")
+    val actor = string("actor")
+    val like = string("like")
 }

src/main/kotlin/dev/usbharu/hideout/repository/ReactionRepositoryImpl.kt

@@ -5,6 +5,7 @@ import dev.usbharu.hideout.service.core.IdGenerateService
 import kotlinx.coroutines.Dispatchers
 import org.jetbrains.exposed.dao.id.LongIdTable
 import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.koin.core.annotation.Single
@@ -65,6 +66,42 @@ class ReactionRepositoryImpl(
             }.map { it.toReaction() }
         }
     }
+
+    override suspend fun delete(reaction: Reaction): Reaction {
+        query {
+            Reactions.deleteWhere {
+                id.eq(reaction.id)
+                    .and(postId.eq(reaction.postId))
+                    .and(userId.eq(reaction.postId))
+                    .and(emojiId.eq(reaction.emojiId))
+            }
+        }
+        return reaction
+    }
+
+    override suspend fun deleteById(id: Long) {
+        query {
+            Reactions.deleteWhere { Reactions.id.eq(id) }
+        }
+    }
+
+    override suspend fun deleteByPostId(postId: Long) {
+        query {
+            Reactions.deleteWhere { Reactions.postId.eq(postId) }
+        }
+    }
+
+    override suspend fun deleteByUserId(userId: Long) {
+        query {
+            Reactions.deleteWhere { Reactions.userId.eq(userId) }
+        }
+    }
+
+    override suspend fun deleteByPostIdAndUserId(postId: Long, userId: Long) {
+        query {
+            Reactions.deleteWhere { Reactions.postId.eq(postId).and(Reactions.userId.eq(userId)) }
+        }
+    }
 }
 
 fun ResultRow.toReaction(): Reaction {

src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubReactionServiceImpl.kt

@@ -1,9 +1,12 @@
 package dev.usbharu.hideout.service.activitypub
 
+import com.fasterxml.jackson.module.kotlin.readValue
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.ap.Like
+import dev.usbharu.hideout.domain.model.ap.Undo
 import dev.usbharu.hideout.domain.model.hideout.entity.Reaction
 import dev.usbharu.hideout.domain.model.job.DeliverReactionJob
+import dev.usbharu.hideout.domain.model.job.DeliverRemoveReactionJob
 import dev.usbharu.hideout.exception.PostNotFoundException
 import dev.usbharu.hideout.plugins.postAp
 import dev.usbharu.hideout.repository.IPostRepository
@@ -12,6 +15,7 @@ import dev.usbharu.hideout.service.user.IUserService
 import io.ktor.client.*
 import kjob.core.job.JobProps
 import org.koin.core.annotation.Single
+import java.time.Instant
 
 @Single
 class ActivityPubReactionServiceImpl(
@@ -36,6 +40,21 @@ class ActivityPubReactionServiceImpl(
         }
     }
 
+    override suspend fun removeReaction(like: Reaction) {
+        val followers = userService.findFollowersById(like.userId)
+        val user = userService.findById(like.userId)
+        val post =
+            iPostRepository.findOneById(like.postId) ?: throw PostNotFoundException("${like.postId} was not found.")
+        followers.forEach { follower ->
+            jobQueueParentService.schedule(DeliverRemoveReactionJob) {
+                props[it.actor] = user.url
+                props[it.inbox] = follower.inbox
+                props[it.id] = post.id.toString()
+                props[it.like] = Config.configData.objectMapper.writeValueAsString(like)
+            }
+        }
+    }
+
     override suspend fun reactionJob(props: JobProps<DeliverReactionJob>) {
         val inbox = props[DeliverReactionJob.inbox]
         val actor = props[DeliverReactionJob.actor]
@@ -54,4 +73,21 @@ class ActivityPubReactionServiceImpl(
             )
         )
     }
+
+    override suspend fun removeReactionJob(props: JobProps<DeliverRemoveReactionJob>) {
+        val inbox = props[DeliverRemoveReactionJob.inbox]
+        val actor = props[DeliverRemoveReactionJob.actor]
+        val like = Config.configData.objectMapper.readValue<Like>(props[DeliverRemoveReactionJob.like])
+        httpClient.postAp(
+            urlString = inbox,
+            username = "$actor#pubkey",
+            jsonLd = Undo(
+                name = "Undo Reaction",
+                actor = actor,
+                `object` = like,
+                id = "${Config.configData.url}/undo/note/${like.id}",
+                published = Instant.now()
+            )
+        )
+    }
 }

src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubServiceImpl.kt

@@ -5,10 +5,7 @@ import com.fasterxml.jackson.module.kotlin.readValue
 import dev.usbharu.hideout.config.Config.configData
 import dev.usbharu.hideout.domain.model.ActivityPubResponse
 import dev.usbharu.hideout.domain.model.ap.Follow
-import dev.usbharu.hideout.domain.model.job.DeliverPostJob
+import dev.usbharu.hideout.domain.model.job.*
-import dev.usbharu.hideout.domain.model.job.DeliverReactionJob
-import dev.usbharu.hideout.domain.model.job.HideoutJob
-import dev.usbharu.hideout.domain.model.job.ReceiveFollowJob
 import dev.usbharu.hideout.exception.JsonParseException
 import kjob.core.dsl.JobContextWithProps
 import kjob.core.job.JobProps
@@ -74,6 +71,9 @@ class ActivityPubServiceImpl(
 
             DeliverPostJob -> activityPubNoteService.createNoteJob(job.props as JobProps<DeliverPostJob>)
             DeliverReactionJob -> activityPubReactionService.reactionJob(job.props as JobProps<DeliverReactionJob>)
+            DeliverRemoveReactionJob -> activityPubReactionService.removeReactionJob(
+                job.props as JobProps<DeliverRemoveReactionJob>
+            )
         }
     }
 }