feat: Followを受け取ったらprintするように

build.gradle.kts

@@ -49,6 +49,9 @@ dependencies {
 
     testImplementation("io.ktor:ktor-server-tests-jvm:$ktor_version")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")
+
+    implementation("io.ktor:ktor-client-core:$ktor_version")
+    implementation("io.ktor:ktor-client-cio:$ktor_version")
 }
 
 jib {

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

@@ -36,8 +36,9 @@ fun Application.module() {
         }
         single<ConfigData> {
             ConfigData(
-                environment.config.property("hideout.hostname").getString(),
+                url = environment.config.propertyOrNull("hideout.url")?.getString()
-                jacksonObjectMapper().enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY)
+                    ?: environment.config.property("hideout.hostname").getString(),
+                objectMapper =  jacksonObjectMapper().enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY)
                     .setSerializationInclusion(JsonInclude.Include.NON_EMPTY)
             )
         }
@@ -45,7 +46,7 @@ fun Application.module() {
         single<IUserAuthRepository> { UserAuthRepository(get()) }
         single<IUserAuthService> { UserAuthService(get(), get()) }
         single<UserService> { UserService(get()) }
-        single<ActivityPubUserService> { ActivityPubUserService(get(),get()) }
+        single<ActivityPubUserService> { ActivityPubUserService(get(), get(),get()) }
     }
     configureKoin(module)
     val configData by inject<ConfigData>()

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

@@ -2,7 +2,7 @@ package dev.usbharu.hideout.ap
 
 open class Object : JsonLd {
     private var type: List<String> = emptyList()
-    private var name: String? = null
+    var name: String? = null
 
     protected constructor()
     constructor(type: List<String>, name: String) : super() {

src/main/kotlin/dev/usbharu/hideout/ap/Person.kt

@@ -2,8 +2,8 @@ package dev.usbharu.hideout.ap
 
 open class Person : Object {
     private var id:String? = null
-    private var preferredUsername:String? = null
+    var preferredUsername:String? = null
-    private var summary:String? = null
+    var summary:String? = null
     private var inbox:String? = null
     private var outbox:String? = null
     private var url:String? = null

src/main/kotlin/dev/usbharu/hideout/config/Config.kt

@@ -7,4 +7,8 @@ object Config {
     var configData: ConfigData = ConfigData()
 }
 
-data class ConfigData(val hostname: String = "", val objectMapper: ObjectMapper = jacksonObjectMapper())
+data class ConfigData(
+    val url: String = "",
+    val domain: String = url.substringAfter("://").substringBeforeLast(":"),
+    val objectMapper: ObjectMapper = jacksonObjectMapper()
+)

src/main/kotlin/dev/usbharu/hideout/domain/model/User.kt

@@ -2,19 +2,24 @@ package dev.usbharu.hideout.domain.model
 
 import org.jetbrains.exposed.dao.id.LongIdTable
 
-data class User(val name: String, val screenName: String, val description: String)
+data class User(val name: String,val domain: String, val screenName: String, val description: String)
 
 data class UserEntity(
     val id: Long,
     val name: String,
+    val domain:String,
     val screenName: String,
     val description: String
 ) {
-    constructor(id: Long, user: User) : this(id, user.name, user.screenName, user.description)
+    constructor(id: Long, user: User) : this(id, user.name,user.domain, user.screenName, user.description)
 }
 
 object Users : LongIdTable("users") {
-    val name = varchar("name", length = 64).uniqueIndex()
+    val name = varchar("name", length = 64)
+    val domain = varchar("domain", length = 255)
     val screenName = varchar("screen_name", length = 64)
     val description = varchar("description", length = 600)
+    init {
+        uniqueIndex(name, domain)
+    }
 }

src/main/kotlin/dev/usbharu/hideout/domain/model/UserAuthentication.kt

@@ -5,17 +5,17 @@ import org.jetbrains.exposed.sql.ReferenceOption
 
 data class UserAuthentication(
     val userId: Long,
-    val hash: String,
+    val hash: String?,
     val publicKey: String,
-    val privateKey: String
+    val privateKey: String?
 )
 
 data class UserAuthenticationEntity(
     val id: Long,
     val userId: Long,
-    val hash: String,
+    val hash: String?,
     val publicKey: String,
-    val privateKey: String
+    val privateKey: String?
 ) {
     constructor(id: Long, userAuthentication: UserAuthentication) : this(
         id,
@@ -28,7 +28,7 @@ data class UserAuthenticationEntity(
 
 object UsersAuthentication : LongIdTable("users_auth") {
     val userId = long("user_id").references(Users.id, onUpdate = ReferenceOption.CASCADE)
-    val hash = varchar("hash", length = 64)
+    val hash = varchar("hash", length = 64).nullable()
     val publicKey = varchar("public_key", length = 1000_000)
-    val privateKey = varchar("private_key", length = 1000_000)
+    val privateKey = varchar("private_key", length = 1000_000).nullable()
 }

src/main/kotlin/dev/usbharu/hideout/domain/model/UsersFollowers.kt

@@ -0,0 +1,11 @@
+package dev.usbharu.hideout.domain.model
+
+import org.jetbrains.exposed.dao.id.LongIdTable
+
+object UsersFollowers : LongIdTable("users_followers") {
+    val userId = long("user_id").references(Users.id).index()
+    val followerId = long("follower_id").references(Users.id)
+    init {
+        uniqueIndex(userId, followerId)
+    }
+}

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

@@ -17,4 +17,8 @@ interface IUserRepository {
     suspend fun findAll(): List<User>
 
     suspend fun findAllByLimitAndByOffset(limit: Int, offset: Long = 0): List<UserEntity>
+
+    suspend fun createFollower(id: Long, follower: Long)
+    suspend fun deleteFollower(id: Long, follower: Long)
+    suspend fun findFollowersById(id: Long): List<UserEntity>
 }

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

@@ -13,6 +13,7 @@ class UserAuthRepository(private val database: Database) : IUserAuthRepository {
     init {
         transaction(database) {
             SchemaUtils.create(UsersAuthentication)
+            SchemaUtils.createMissingTablesAndColumns(UsersAuthentication)
         }
     }
 

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

@@ -3,6 +3,7 @@ package dev.usbharu.hideout.repository
 import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserEntity
 import dev.usbharu.hideout.domain.model.Users
+import dev.usbharu.hideout.domain.model.UsersFollowers
 import kotlinx.coroutines.Dispatchers
 import org.jetbrains.exposed.sql.*
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
@@ -13,12 +14,16 @@ class UserRepository(private val database: Database) : IUserRepository {
     init {
         transaction(database) {
             SchemaUtils.create(Users)
+            SchemaUtils.create(UsersFollowers)
+            SchemaUtils.createMissingTablesAndColumns(Users)
+            SchemaUtils.createMissingTablesAndColumns(UsersFollowers)
         }
     }
 
     private fun ResultRow.toUser(): User {
         return User(
             this[Users.name],
+            this[Users.domain],
             this[Users.screenName],
             this[Users.description]
         )
@@ -28,6 +33,7 @@ class UserRepository(private val database: Database) : IUserRepository {
         return UserEntity(
             this[Users.id].value,
             this[Users.name],
+            this[Users.domain],
             this[Users.screenName],
             this[Users.description]
         )
@@ -40,12 +46,22 @@ class UserRepository(private val database: Database) : IUserRepository {
         return query {
             UserEntity(Users.insert {
                 it[name] = user.name
+                it[domain] = user.domain
                 it[screenName] = user.screenName
                 it[description] = user.description
             }[Users.id].value, user)
         }
     }
 
+    override suspend fun createFollower(id: Long, follower: Long) {
+        return query {
+            UsersFollowers.insert {
+                it[userId] = id
+                it[followerId] = follower
+            }
+        }
+    }
+
     override suspend fun findById(id: Long): UserEntity? {
         return query {
             Users.select { Users.id eq id }.map {
@@ -62,11 +78,36 @@ class UserRepository(private val database: Database) : IUserRepository {
         }
     }
 
+    override suspend fun findFollowersById(id: Long): List<UserEntity> {
+        return query {
+            val followers = Users.alias("followers")
+            Users.leftJoin(
+                otherTable = UsersFollowers,
+                onColumn = { Users.id },
+                otherColumn = { UsersFollowers.userId })
+                .leftJoin(
+                    otherTable = followers,
+                    onColumn = { UsersFollowers.followerId },
+                    otherColumn = { followers[Users.id] })
+                .select { Users.id eq id }
+                .map {
+                    UserEntity(
+                        id = it[followers[Users.id]].value,
+                        name = it[followers[Users.name]],
+                        domain = it[followers[Users.domain]],
+                        screenName = it[followers[Users.screenName]],
+                        description = it[followers[Users.description]],
+                    )
+                }
+        }
+    }
+
 
     override suspend fun update(userEntity: UserEntity) {
         return query {
             Users.update({ Users.id eq userEntity.id }) {
                 it[name] = userEntity.name
+                it[domain] = userEntity.domain
                 it[screenName] = userEntity.screenName
                 it[description] = userEntity.description
             }
@@ -79,6 +120,12 @@ class UserRepository(private val database: Database) : IUserRepository {
         }
     }
 
+    override suspend fun deleteFollower(id: Long, follower: Long) {
+        query {
+            UsersFollowers.deleteWhere { (userId eq id).and(followerId eq follower) }
+        }
+    }
+
     override suspend fun findAll(): List<User> {
         return query {
             Users.selectAll().map { it.toUser() }

src/main/kotlin/dev/usbharu/hideout/routing/UserRouting.kt

@@ -50,7 +50,8 @@ fun Application.user(userService: UserService, activityPubUserService: ActivityP
                         val userModel = activityPubUserService.generateUserModel(name!!)
                         return@get call.respondAp(userModel)
                     }
-
+                    name?.let { it1 -> userService.findByName(it1).id }
+                        ?.let { it2 -> println(userService.findFollowersById(it2)) }
                     val principal = call.principal<UserIdPrincipal>()
                     if (principal != null && name != null) {
 //                        iUserService.findByName(name)

src/main/kotlin/dev/usbharu/hideout/routing/WellKnownRouting.kt

@@ -16,7 +16,7 @@ fun Application.wellKnown(userService: UserService) {
             get("/host-meta") {
                 //language=XML
                 val xml = """
-                    <?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0"><Link rel="lrdd" type="application/xrd+xml" template="${Config.configData.hostname}/.well-known/webfinger?resource={uri}"/></XRD>
+                    <?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0"><Link rel="lrdd" type="application/xrd+xml" template="${Config.configData.url}/.well-known/webfinger?resource={uri}"/></XRD>
                 """.trimIndent()
                 return@get call.respondText(
                     contentType = ContentType("application", "xrd+xml"),
@@ -32,7 +32,7 @@ fun Application.wellKnown(userService: UserService) {
                         {
                           "rel": "lrdd",
                           "type": "application/jrd+json",
-                          "template": "${Config.configData.hostname}/.well-known/webfinger?resource={uri}"
+                          "template": "${Config.configData.url}/.well-known/webfinger?resource={uri}"
                         }
                       ]
                     }
@@ -67,7 +67,7 @@ fun Application.wellKnown(userService: UserService) {
                             WebFingerResource.Link(
                                 rel = "self",
                                 type = ContentType.Application.Activity.toString(),
-                                href = "${Config.configData.hostname}/users/${userEntity.name}"
+                                href = "${Config.configData.url}/users/${userEntity.name}"
                             )
                         )
                     )

src/main/kotlin/dev/usbharu/hideout/routing/userActivityPubRouting.kt

@@ -1,30 +1,38 @@
 package dev.usbharu.hideout.routing
 
+import dev.usbharu.hideout.service.ActivityPubService
+import dev.usbharu.hideout.util.HttpUtil
 import io.ktor.http.*
 import io.ktor.server.application.*
+import io.ktor.server.request.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
 
-fun Application.userActivityPubRouting() {
+fun Application.userActivityPubRouting(activityPubService: ActivityPubService) {
     routing {
         route("/users/{name}") {
             route("/inbox") {
                 get {
-                    call.respond(HttpStatusCode.OK)
+                    call.respond(HttpStatusCode.MethodNotAllowed)
                 }
                 post {
-                    call.respond(HttpStatusCode.OK)
+                    if (!HttpUtil.isContentTypeOfActivityPub(call.request.contentType())) {
+                        return@post call.respond(HttpStatusCode.BadRequest)
+                    }
+                    val bodyText = call.receiveText()
+                    println(bodyText)
+                    activityPubService.switchApType(bodyText)
 
                 }
             }
             route("/outbox") {
                 get {
-                    call.respond(HttpStatusCode.OK)
+                    call.respond(HttpStatusCode.MethodNotAllowed)
 
                 }
                 post {
 
-                    call.respond(HttpStatusCode.OK)
+                    call.respond(HttpStatusCode.MethodNotAllowed)
                 }
             }
         }

src/main/kotlin/dev/usbharu/hideout/service/ActivityPubService.kt

@@ -1,5 +1,20 @@
 package dev.usbharu.hideout.service
 
-class ActivityPubService {
+import com.fasterxml.jackson.databind.ObjectMapper
 
+class ActivityPubService(private val objectMapper: ObjectMapper) {
+
+    enum class ActivityType{
+        Follow,
+        Undo
+    }
+
+    fun switchApType(json:String):ActivityType{
+        val typeAsText = objectMapper.readTree(json).get("type").asText()
+        return when(typeAsText){
+            "Follow" -> ActivityType.Follow
+            "Undo" -> ActivityType.Undo
+            else -> throw IllegalArgumentException()
+        }
+    }
 }

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

@@ -4,15 +4,21 @@ import dev.usbharu.hideout.ap.Image
 import dev.usbharu.hideout.ap.Key
 import dev.usbharu.hideout.ap.Person
 import dev.usbharu.hideout.config.Config
+import io.ktor.client.*
+import io.ktor.client.call.*
+import io.ktor.client.plugins.*
+import io.ktor.client.request.*
+import io.ktor.http.*
 
 class ActivityPubUserService(
+    private val httpClient:HttpClient,
     private val userService: UserService,
     private val userAuthService: IUserAuthService
 ) {
     suspend fun generateUserModel(name: String): Person {
         val userEntity = userService.findByName(name)
         val userAuthEntity = userAuthService.findByUserId(userEntity.id)
-        val userUrl = "${Config.configData.hostname}/users/$name"
+        val userUrl = "${Config.configData.url}/users/$name"
         return Person(
             type = emptyList(),
             name = userEntity.name,
@@ -37,4 +43,19 @@ class ActivityPubUserService(
             )
         )
     }
+
+    suspend fun fetchUserModel(url:String):Person? {
+        return try {
+            httpClient.get(url).body<Person>()
+        } catch (e: ResponseException) {
+            if (e.response.status == HttpStatusCode.NotFound) {
+                return null
+            }
+            throw e
+        }
+    }
+
+    suspend fun receiveFollow(){
+
+    }
 }

src/main/kotlin/dev/usbharu/hideout/service/HttpSignService.kt

@@ -0,0 +1,7 @@
+package dev.usbharu.hideout.service
+
+class HttpSignService {
+    suspend fun sign(){
+
+    }
+}

src/main/kotlin/dev/usbharu/hideout/service/IWebFingerService.kt

@@ -0,0 +1,15 @@
+package dev.usbharu.hideout.service
+
+import dev.usbharu.hideout.domain.model.UserEntity
+import dev.usbharu.hideout.webfinger.WebFinger
+
+interface IWebFingerService {
+    suspend fun fetch(acct:String): WebFinger?
+
+    suspend fun sync(webFinger: WebFinger):UserEntity
+
+    suspend fun fetchAndSync(acct: String):UserEntity{
+        val webFinger = fetch(acct)?: throw IllegalArgumentException()
+        return sync(webFinger)
+    }
+}

src/main/kotlin/dev/usbharu/hideout/service/UserAuthService.kt

@@ -1,8 +1,10 @@
 package dev.usbharu.hideout.service
 
+import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserAuthentication
 import dev.usbharu.hideout.domain.model.UserAuthenticationEntity
+import dev.usbharu.hideout.domain.model.Users.screenName
 import dev.usbharu.hideout.exception.UserNotFoundException
 import dev.usbharu.hideout.repository.IUserAuthRepository
 import dev.usbharu.hideout.repository.IUserRepository
@@ -10,7 +12,6 @@ import io.ktor.util.*
 import java.security.KeyPair
 import java.security.KeyPairGenerator
 import java.security.MessageDigest
-import java.security.interfaces.RSAPrivateCrtKey
 import java.security.interfaces.RSAPrivateKey
 import java.security.interfaces.RSAPublicKey
 import java.util.*
@@ -34,6 +35,7 @@ class UserAuthService(
     override suspend fun registerAccount(username: String, hash: String) {
         val registerUser = User(
             name = username,
+            domain = Config.configData.domain,
             screenName = username,
             description = ""
         )

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

@@ -4,8 +4,6 @@ import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserEntity
 import dev.usbharu.hideout.exception.UserNotFoundException
 import dev.usbharu.hideout.repository.IUserRepository
-import dev.usbharu.hideout.repository.UserRepository
-import org.jetbrains.exposed.sql.Database
 import java.lang.Integer.min
 
 class UserService(private val userRepository: IUserRepository) {
@@ -24,10 +22,20 @@ class UserService(private val userRepository: IUserRepository) {
     }
 
     suspend fun findByName(name: String): UserEntity {
-        return userRepository.findByName(name) ?: throw UserNotFoundException("$name was not found.")
+        return userRepository.findByName(name)
+            ?: throw UserNotFoundException("$name was not found.")
     }
 
     suspend fun create(user: User): UserEntity {
         return userRepository.create(user)
     }
+
+    suspend fun findFollowersById(id: Long): List<UserEntity> {
+        return userRepository.findFollowersById(id)
+    }
+
+    suspend fun addFollowers(id: Long, follower: Long) {
+        return userRepository.createFollower(id, follower)
+    }
+
 }

src/main/kotlin/dev/usbharu/hideout/service/WebFingerService.kt

@@ -0,0 +1,59 @@
+package dev.usbharu.hideout.service
+
+import dev.usbharu.hideout.domain.model.User
+import dev.usbharu.hideout.domain.model.UserEntity
+import dev.usbharu.hideout.util.HttpUtil
+import dev.usbharu.hideout.webfinger.WebFinger
+import io.ktor.client.*
+import io.ktor.client.call.*
+import io.ktor.client.plugins.*
+import io.ktor.client.request.*
+import io.ktor.http.*
+
+class WebFingerService(
+    private val httpClient: HttpClient,
+    private val userService: UserService,
+    private val userAuthService: IUserAuthService,
+    private val activityPubUserService: ActivityPubUserService
+) : IWebFingerService {
+    override suspend fun fetch(acct: String): WebFinger? {
+
+        val fullName = acct.substringAfter("acct:")
+        val domain = fullName.substringAfterLast("@")
+
+        return try {
+            httpClient.get("https://$domain/.well-known/webfinger?resource=acct:$fullName")
+                .body<WebFinger>()
+        } catch (e: ResponseException) {
+            if (e.response.status == HttpStatusCode.NotFound) {
+                return null
+            }
+            throw e
+        }
+    }
+
+    override suspend fun sync(webFinger: WebFinger): UserEntity {
+
+        val link = webFinger.links.find {
+            it.rel == "self" && HttpUtil.isContentTypeOfActivityPub(
+                ContentType.parse(
+                    it.type.orEmpty()
+                )
+            )
+        }?.href ?: throw Exception()
+
+        val fullName = webFinger.subject.substringAfter("acct:")
+        val domain = fullName.substringAfterLast("@")
+        val userName = fullName.substringBeforeLast("@")
+
+        val userModel = activityPubUserService.fetchUserModel(link) ?: throw Exception()
+
+        val user = User(
+            userModel.preferredUsername ?: throw IllegalStateException(),
+            domain,
+            userName,
+            userModel.summary.orEmpty()
+        )
+        return userService.create(user)
+    }
+}

src/main/kotlin/dev/usbharu/hideout/util/HttpUtil.kt

@@ -15,11 +15,15 @@ object HttpUtil {
         if (subType == "activity+json") {
             return true
         }
-        if (subType == "ld+json") {
+        return subType == "ld+json"
-            return true
-
     }
-        return false
+
+    fun isContentTypeOfActivityPub(contentType: ContentType): Boolean {
+        return isContentTypeOfActivityPub(
+            contentType.contentType,
+            contentType.contentSubtype,
+            contentType.parameter("profile").orEmpty()
+        )
     }
 
     val ContentType.Application.Activity: ContentType

src/main/kotlin/dev/usbharu/hideout/webfinger/WebFinger.kt

@@ -0,0 +1,5 @@
+package dev.usbharu.hideout.webfinger
+
+class WebFinger(val subject: String, val aliases: List<String>, val links: List<Link>) {
+    class Link(val rel: String, val type: String?, val href: String?, val template: String)
+}