feat: Undoを実装

gradle.properties

@@ -6,6 +6,6 @@ exposed_version=0.41.1
 h2_version=2.1.214
 koin_version=3.3.1
 org.gradle.parallel=true
-org.gradle.configureondemand=true
+#org.gradle.configureondemand=true
 org.gradle.caching=true
 org.gradle.jvmargs=-Xmx2048m -XX:+HeapDumpOnOutOfMemoryError -XX:+UseParallelGC

src/main/kotlin/dev/usbharu/hideout/domain/model/ap/Accept.kt

@@ -1,33 +1,43 @@
 package dev.usbharu.hideout.domain.model.ap
 
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize
+
 open class Accept : Object {
+    @JsonDeserialize(using = ObjectDeserializer::class)
     var `object`: Object? = null
 
-    protected constructor() : super()
+    protected constructor()
     constructor(
         type: List<String> = emptyList(),
         name: String,
         `object`: Object?,
         actor: String?
-    ) : super(add(type, "Accept"), name, actor) {
+    ) : super(
+        type = add(type, "Accept"),
+        name = name,
+        actor = actor
+    ) {
         this.`object` = `object`
     }
 
+
+    override fun toString(): String {
+        return "Accept(`object`=$`object`) ${super.toString()}"
+    }
+
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
         if (other !is Accept) return false
         if (!super.equals(other)) return false
 
-        if (`object` != other.`object`) return false
-        return actor == other.actor
+        return `object` == other.`object`
     }
 
     override fun hashCode(): Int {
         var result = super.hashCode()
         result = 31 * result + (`object`?.hashCode() ?: 0)
-        result = 31 * result + (actor?.hashCode() ?: 0)
         return result
     }
 
-    override fun toString(): String = "Accept(`object`=$`object`, actor=$actor) ${super.toString()}"
+
 }

src/main/kotlin/dev/usbharu/hideout/domain/model/ap/Follow.kt

@@ -6,7 +6,7 @@ open class Follow : Object {
     protected constructor() : super()
     constructor(
         type: List<String> = emptyList(),
-        name: String,
+        name: String?,
         `object`: String?,
         actor: String?
     ) : super(
@@ -16,4 +16,24 @@ open class Follow : Object {
     ) {
         this.`object` = `object`
     }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is Follow) return false
+        if (!super.equals(other)) return false
+
+        return `object` == other.`object`
+    }
+
+    override fun hashCode(): Int {
+        var result = super.hashCode()
+        result = 31 * result + (`object`?.hashCode() ?: 0)
+        return result
+    }
+
+    override fun toString(): String {
+        return "Follow(`object`=$`object`) ${super.toString()}"
+    }
+
+
 }

src/main/kotlin/dev/usbharu/hideout/domain/model/ap/Object.kt

@@ -7,7 +7,7 @@ import com.fasterxml.jackson.databind.annotation.JsonSerialize
 
 open class Object : JsonLd {
     @JsonSerialize(using = TypeSerializer::class)
-    private var type: List<String> = emptyList()
+    var type: List<String> = emptyList()
     var name: String? = null
     var actor: String? = null
     var id: String? = null

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

@@ -0,0 +1,49 @@
+package dev.usbharu.hideout.domain.model.ap
+
+import com.fasterxml.jackson.core.JsonParser
+import com.fasterxml.jackson.databind.DeserializationContext
+import com.fasterxml.jackson.databind.JsonDeserializer
+import com.fasterxml.jackson.databind.JsonNode
+import dev.usbharu.hideout.service.activitypub.ActivityType
+
+class ObjectDeserializer : JsonDeserializer<Object>() {
+    override fun deserialize(p: JsonParser?, ctxt: DeserializationContext?): Object {
+        requireNotNull(p)
+        val treeNode: JsonNode = requireNotNull(p.codec?.readTree(p))
+        if (treeNode.isValueNode) {
+            return ObjectValue(
+                emptyList(),
+                null,
+                null,
+                null,
+                treeNode.asText()
+            )
+        } else if (treeNode.isObject) {
+            val type = treeNode["type"]
+            val activityType = if (type.isArray) {
+                type.firstNotNullOf { jsonNode: JsonNode ->
+                    ActivityType.values().firstOrNull { it.name.equals(jsonNode.asText(), true) }
+                }
+            } else if (type.isValueNode) {
+                ActivityType.values().first { it.name.equals(type.asText(), true) }
+            } else {
+                TODO()
+            }
+
+            return when (activityType) {
+                ActivityType.Follow -> {
+                    val readValue = p.codec.treeToValue(treeNode, Follow::class.java)
+                    println(readValue)
+                    readValue
+                }
+
+                else -> {
+                    TODO()
+                }
+            }
+        } else {
+            TODO()
+        }
+    }
+
+}

src/main/kotlin/dev/usbharu/hideout/domain/model/ap/ObjectValue.kt

@@ -0,0 +1,36 @@
+package dev.usbharu.hideout.domain.model.ap
+
+class ObjectValue : Object {
+
+    var `object`: String? = null
+
+    protected constructor()
+    constructor(type: List<String>, name: String?, actor: String?, id: String?, `object`: String?) : super(
+        type,
+        name,
+        actor,
+        id
+    ) {
+        this.`object` = `object`
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is ObjectValue) return false
+        if (!super.equals(other)) return false
+
+        return `object` == other.`object`
+    }
+
+    override fun hashCode(): Int {
+        var result = super.hashCode()
+        result = 31 * result + (`object`?.hashCode() ?: 0)
+        return result
+    }
+
+    override fun toString(): String {
+        return "ObjectValue(`object`=$`object`) ${super.toString()}"
+    }
+
+
+}

src/main/kotlin/dev/usbharu/hideout/domain/model/ap/Undo.kt

@@ -0,0 +1,46 @@
+package dev.usbharu.hideout.domain.model.ap
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize
+import java.time.Instant
+
+class Undo : Object {
+
+    @JsonDeserialize(using = ObjectDeserializer::class)
+    var `object`: Object? = null
+    var published: String? = null
+
+    protected constructor()
+    constructor(
+        type: List<String> = emptyList(),
+        name: String,
+        actor: String,
+        id: String?,
+        `object`: Object,
+        published: Instant
+    ) : super(add(type, "Undo"), name, actor, id) {
+        this.`object` = `object`
+        this.published = published.toString()
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is Undo) return false
+        if (!super.equals(other)) return false
+
+        if (`object` != other.`object`) return false
+        return published == other.published
+    }
+
+    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 "Undo(`object`=$`object`, published=$published) ${super.toString()}"
+    }
+
+
+}

src/main/kotlin/dev/usbharu/hideout/routing/api/internal/v1/Users.kt

@@ -71,7 +71,7 @@ fun Route.users(userService: IUserService, userApiService: IUserApiService) {
                         val userParameter = call.parameters["name"]
                             ?: throw ParameterNotExistException("Parameter(name='userName@domain') does not exist.")
                         if (userParameter.toLongOrNull() != null) {
-                            if (userService.addFollowers(userParameter.toLong(), userId)) {
+                            if (userService.follow(userParameter.toLong(), userId)) {
                                 return@post call.respond(HttpStatusCode.OK)
                             } else {
                                 return@post call.respond(HttpStatusCode.Accepted)
@@ -79,7 +79,7 @@ fun Route.users(userService: IUserService, userApiService: IUserApiService) {
                         }
                         val acct = AcctUtil.parse(userParameter)
                         val targetUser = userApiService.findByAcct(acct)
-                        if (userService.addFollowers(targetUser.id, userId)) {
+                        if (userService.follow(targetUser.id, userId)) {
                             return@post call.respond(HttpStatusCode.OK)
                         } else {
                             return@post call.respond(HttpStatusCode.Accepted)

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

@@ -49,6 +49,6 @@ class ActivityPubFollowServiceImpl(
         val users =
             userService.findByUrls(listOf(targetActor, follow.actor ?: throw IllegalArgumentException("actor is null")))
 
-        userService.addFollowers(users.first { it.url == targetActor }.id, users.first { it.url == follow.actor }.id)
+        userService.follow(users.first { it.url == targetActor }.id, users.first { it.url == follow.actor }.id)
     }
 }

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

@@ -1,6 +1,7 @@
 package dev.usbharu.hideout.service.activitypub
 
 import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.module.kotlin.readValue
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.ActivityPubResponse
 import dev.usbharu.hideout.domain.model.ap.Follow
@@ -17,7 +18,8 @@ import org.slf4j.LoggerFactory
 @Single
 class ActivityPubServiceImpl(
     private val activityPubFollowService: ActivityPubFollowService,
-    private val activityPubNoteService: ActivityPubNoteService
+    private val activityPubNoteService: ActivityPubNoteService,
+    private val activityPubUndoService: ActivityPubUndoService
 ) : ActivityPubService {
 
     val logger: Logger = LoggerFactory.getLogger(this::class.java)
@@ -70,7 +72,7 @@ class ActivityPubServiceImpl(
             ActivityType.TentativeReject -> TODO()
             ActivityType.TentativeAccept -> TODO()
             ActivityType.Travel -> TODO()
-            ActivityType.Undo -> TODO()
+            ActivityType.Undo -> activityPubUndoService.receiveUndo(Config.configData.objectMapper.readValue(json))
             ActivityType.Update -> TODO()
             ActivityType.View -> TODO()
             ActivityType.Other -> TODO()

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

@@ -0,0 +1,8 @@
+package dev.usbharu.hideout.service.activitypub
+
+import dev.usbharu.hideout.domain.model.ActivityPubResponse
+import dev.usbharu.hideout.domain.model.ap.Undo
+
+interface ActivityPubUndoService {
+    suspend fun receiveUndo(undo: Undo): ActivityPubResponse
+}

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

@@ -0,0 +1,45 @@
+package dev.usbharu.hideout.service.activitypub
+
+import dev.usbharu.hideout.domain.model.ActivityPubResponse
+import dev.usbharu.hideout.domain.model.ActivityPubStringResponse
+import dev.usbharu.hideout.domain.model.ap.Follow
+import dev.usbharu.hideout.domain.model.ap.Undo
+import dev.usbharu.hideout.service.impl.IUserService
+import io.ktor.http.*
+import org.koin.core.annotation.Single
+
+@Single
+class ActivityPubUndoServiceImpl(
+    private val userService: IUserService,
+    private val activityPubUserService: ActivityPubUserService
+) : ActivityPubUndoService {
+    override suspend fun receiveUndo(undo: Undo): ActivityPubResponse {
+
+        if (undo.actor == null) {
+            return ActivityPubStringResponse(HttpStatusCode.BadRequest, "actor is null")
+        }
+
+        val type =
+            undo.`object`?.type.orEmpty()
+                .firstOrNull { it == "Block" || it == "Follow" || it == "Like" || it == "Announce" || it == "Accept" }
+                ?: return ActivityPubStringResponse(HttpStatusCode.BadRequest, "unknown type ${undo.`object`?.type}")
+
+        when (type) {
+            "Follow" -> {
+                val follow = undo.`object` as Follow
+
+                if (follow.`object` == null) {
+                    return ActivityPubStringResponse(HttpStatusCode.BadRequest, "object.object is null")
+                }
+
+                activityPubUserService.fetchPerson(undo.actor!!, follow.`object`)
+                val follower = userService.findByUrl(undo.actor!!)
+                val target = userService.findByUrl(follow.`object`!!)
+                userService.unfollow(target.id, follower.id)
+            }
+
+            else -> {}
+        }
+        TODO()
+    }
+}

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

@@ -5,5 +5,12 @@ import dev.usbharu.hideout.domain.model.ap.Person
 interface ActivityPubUserService {
     suspend fun getPersonByName(name: String): Person
 
+    /**
+     * Fetch person
+     *
+     * @param url
+     * @param targetActor 署名するユーザー
+     * @return
+     */
     suspend fun fetchPerson(url: String, targetActor: String? = null): Person
 }

src/main/kotlin/dev/usbharu/hideout/service/impl/IUserService.kt

@@ -45,5 +45,7 @@ interface IUserService {
      * @param follower
      * @return リクエストが成功したか
      */
-    suspend fun addFollowers(id: Long, follower: Long): Boolean
+    suspend fun follow(id: Long, follower: Long): Boolean
+
+    suspend fun unfollow(id: Long, follower: Long): Boolean
 }

src/main/kotlin/dev/usbharu/hideout/service/impl/UserService.kt

@@ -105,8 +105,13 @@ class UserService(private val userRepository: IUserRepository, private val userA
     }
 
     // TODO APのフォロー処理を作る
-    override suspend fun addFollowers(id: Long, follower: Long): Boolean {
+    override suspend fun follow(id: Long, follower: Long): Boolean {
         userRepository.createFollower(id, follower)
         return false
     }
+
+    override suspend fun unfollow(id: Long, follower: Long): Boolean {
+        userRepository.deleteFollower(id, follower)
+        return false
+    }
 }

src/test/kotlin/dev/usbharu/hideout/domain/model/ap/UndoTest.kt

@@ -0,0 +1,76 @@
+package dev.usbharu.hideout.domain.model.ap
+
+import org.intellij.lang.annotations.Language
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+import utils.JsonObjectMapper
+import java.time.Clock
+import java.time.Instant
+import java.time.ZoneId
+
+class UndoTest {
+    @Test
+    fun Undoのシリアライズができる() {
+        val undo = Undo(
+            emptyList(),
+            "Undo Follow",
+            "https://follower.example.com/",
+            "https://follower.example.com/undo/1",
+            Follow(
+                emptyList(),
+                null,
+                "https://follower.example.com/users/",
+                actor = "https://follower.exaple.com/users/1"
+            ),
+            Instant.now(Clock.tickMillis(ZoneId.systemDefault()))
+        )
+        val writeValueAsString = JsonObjectMapper.objectMapper.writeValueAsString(undo)
+        println(writeValueAsString)
+    }
+
+    @Test
+    fun Undoをデシリアライズ出来る() {
+        @Language("JSON") val json = """
+          {
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "sensitive": "as:sensitive",
+      "Hashtag": "as:Hashtag",
+      "quoteUrl": "as:quoteUrl",
+      "toot": "http://joinmastodon.org/ns#",
+      "Emoji": "toot:Emoji",
+      "featured": "toot:featured",
+      "discoverable": "toot:discoverable",
+      "schema": "http://schema.org#",
+      "PropertyValue": "schema:PropertyValue",
+      "value": "schema:value",
+      "misskey": "https://misskey-hub.net/ns#",
+      "_misskey_content": "misskey:_misskey_content",
+      "_misskey_quote": "misskey:_misskey_quote",
+      "_misskey_reaction": "misskey:_misskey_reaction",
+      "_misskey_votes": "misskey:_misskey_votes",
+      "isCat": "misskey:isCat",
+      "vcard": "http://www.w3.org/2006/vcard/ns#"
+    }
+  ],
+  "type": "Undo",
+  "id": "https://misskey.usbharu.dev/follows/97ws8y3rj6/9ezbh8qrh0/undo",
+  "actor": "https://misskey.usbharu.dev/users/97ws8y3rj6",
+  "object": {
+    "id": "https://misskey.usbharu.dev/follows/97ws8y3rj6/9ezbh8qrh0",
+    "type": "Follow",
+    "actor": "https://misskey.usbharu.dev/users/97ws8y3rj6",
+    "object": "https://test-hideout.usbharu.dev/users/test"
+  },
+  "published": "2023-05-20T10:28:17.308Z"
+}
+  
+        """.trimIndent()
+
+        val undo = JsonObjectMapper.objectMapper.readValue(json, Undo::class.java)
+        println(undo)
+    }
+}

src/test/kotlin/dev/usbharu/hideout/routing/api/internal/v1/UsersTest.kt

@@ -432,7 +432,7 @@ class UsersTest {
             )
         }
         val userService = mock<IUserService> {
-            onBlocking { addFollowers(eq(1235), eq(1234)) } doReturn true
+            onBlocking { follow(eq(1235), eq(1234)) } doReturn true
         }
         application {
             configureSerialization()
@@ -482,7 +482,7 @@ class UsersTest {
             )
         }
         val userService = mock<IUserService> {
-            onBlocking { addFollowers(eq(1235), eq(1234)) } doReturn false
+            onBlocking { follow(eq(1235), eq(1234)) } doReturn false
         }
         application {
             configureSerialization()
@@ -532,7 +532,7 @@ class UsersTest {
             )
         }
         val userService = mock<IUserService> {
-            onBlocking { addFollowers(eq(1235), eq(1234)) } doReturn false
+            onBlocking { follow(eq(1235), eq(1234)) } doReturn false
         }
         application {
             configureSerialization()

src/test/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubFollowServiceImplTest.kt

@@ -115,7 +115,7 @@ class ActivityPubFollowServiceImplTest {
                     createdAt = Instant.now()
                 )
             )
-            onBlocking { addFollowers(any(), any()) } doReturn false
+            onBlocking { follow(any(), any()) } doReturn false
         }
         val activityPubFollowService =
             ActivityPubFollowServiceImpl(
@@ -137,10 +137,12 @@ class ActivityPubFollowServiceImplTest {
                             actor = "https://example.com"
                         )
                         accept.context += "https://www.w3.org/ns/activitystreams"
+                        val content = httpRequestData.body.toByteArray().decodeToString()
+                        println(content)
                         assertEquals(
                             accept,
                             Config.configData.objectMapper.readValue<Accept>(
-                                httpRequestData.body.toByteArray().decodeToString()
+                                content
                             )
                         )
                         respondOk()