refactor: Refactor into services and repositories

src/main/kotlin/app/revanced/api/command/StartAPICommand.kt

@@ -1,6 +1,7 @@
 package app.revanced.api.command
 
-import app.revanced.api.modules.*
+import app.revanced.api.configuration.*
+import app.revanced.api.configuration.routing.configureRouting
 import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import picocli.CommandLine
@@ -27,7 +28,7 @@ internal object StartAPICommand : Runnable {
     override fun run() {
         embeddedServer(Netty, port, host) {
             configureDependencies()
-            configureHTTP()
+            configureHTTP(allowedHost = host)
             configureSerialization()
             configureSecurity()
             configureRouting()

src/main/kotlin/app/revanced/api/configuration/Dependencies.kt

@@ -0,0 +1,83 @@
+package app.revanced.api.configuration
+
+import app.revanced.api.repository.AnnouncementRepository
+import app.revanced.api.repository.ConfigurationRepository
+import app.revanced.api.repository.backend.BackendRepository
+import app.revanced.api.repository.backend.github.GitHubBackendRepository
+import app.revanced.api.services.AnnouncementService
+import app.revanced.api.services.ApiService
+import app.revanced.api.services.AuthService
+import app.revanced.api.services.PatchesService
+import com.akuleshov7.ktoml.Toml
+import com.akuleshov7.ktoml.source.decodeFromStream
+import io.github.cdimascio.dotenv.Dotenv
+import io.ktor.server.application.*
+import org.jetbrains.exposed.sql.Database
+import org.koin.core.module.dsl.singleOf
+import org.koin.dsl.bind
+import org.koin.dsl.module
+import org.koin.ktor.plugin.Koin
+import java.io.File
+
+fun Application.configureDependencies() {
+    val globalModule = module {
+        single {
+            Dotenv.configure()
+                .systemProperties()
+                .load()
+        }
+    }
+
+    val repositoryModule = module {
+        single {
+            val dotenv = get<Dotenv>()
+
+            Database.connect(
+                url = dotenv["DB_URL"],
+                user = dotenv["DB_USER"],
+                password = dotenv["DB_PASSWORD"],
+                driver = "org.h2.Driver",
+            )
+        }
+
+        single {
+            val configFilePath = get<Dotenv>()["CONFIG_FILE_PATH"]
+            val configFile = File(configFilePath).inputStream()
+
+            Toml.decodeFromStream<ConfigurationRepository>(configFile)
+        }
+
+        singleOf(::AnnouncementRepository)
+    }
+
+    val serviceModule = module {
+        single {
+            val dotenv = get<Dotenv>()
+
+            val jwtSecret = dotenv["JWT_SECRET"]
+            val issuer = dotenv["JWT_ISSUER"]
+            val validityInMin = dotenv["JWT_VALIDITY_IN_MIN"].toInt()
+
+            val basicUsername = dotenv["BASIC_USERNAME"]
+            val basicPassword = dotenv["BASIC_PASSWORD"]
+
+            AuthService(issuer, validityInMin, jwtSecret, basicUsername, basicPassword)
+        }
+        single {
+            val token = get<Dotenv>()["GITHUB_TOKEN"]
+
+            GitHubBackendRepository(token)
+        } bind BackendRepository::class
+        singleOf(::AnnouncementService)
+        singleOf(::PatchesService)
+        singleOf(::ApiService)
+    }
+
+    install(Koin) {
+        modules(
+            globalModule,
+            repositoryModule,
+            serviceModule,
+        )
+    }
+}

src/main/kotlin/app/revanced/api/configuration/HTTP.kt

@@ -1,4 +1,4 @@
-package app.revanced.api.modules
+package app.revanced.api.configuration
 
 import io.ktor.http.*
 import io.ktor.http.content.*
@@ -8,7 +8,9 @@ import io.ktor.server.plugins.conditionalheaders.*
 import io.ktor.server.plugins.cors.routing.*
 import kotlin.time.Duration.Companion.minutes
 
-fun Application.configureHTTP() {
+fun Application.configureHTTP(
+    allowedHost: String,
+) {
     install(ConditionalHeaders)
     install(CORS) {
         allowMethod(HttpMethod.Options)
@@ -16,7 +18,7 @@ fun Application.configureHTTP() {
         allowMethod(HttpMethod.Delete)
         allowMethod(HttpMethod.Patch)
         allowHeader(HttpHeaders.Authorization)
-        anyHost() // @TODO: Don't do this in production if possible. Try to limit it.
+        allowHost(allowedHost)
     }
     install(CachingHeaders) {
         options { _, _ -> CachingOptions(CacheControl.MaxAge(maxAgeSeconds = 5.minutes.inWholeSeconds.toInt())) }

src/main/kotlin/app/revanced/api/configuration/Security.kt

@@ -0,0 +1,9 @@
+package app.revanced.api.configuration
+
+import app.revanced.api.services.AuthService
+import io.ktor.server.application.*
+import org.koin.ktor.ext.get
+
+fun Application.configureSecurity() {
+    get<AuthService>().configureSecurity(this)
+}

src/main/kotlin/app/revanced/api/configuration/Serialization.kt

@@ -0,0 +1,19 @@
+package app.revanced.api.configuration
+
+import io.ktor.serialization.kotlinx.json.*
+import io.ktor.server.application.*
+import io.ktor.server.plugins.contentnegotiation.*
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonNamingStrategy
+
+@OptIn(ExperimentalSerializationApi::class)
+fun Application.configureSerialization() {
+    install(ContentNegotiation) {
+        json(
+            Json {
+                namingStrategy = JsonNamingStrategy.SnakeCase
+            },
+        )
+    }
+}

src/main/kotlin/app/revanced/api/configuration/routing/Routing.kt

@@ -0,0 +1,19 @@
+package app.revanced.api.configuration.routing
+
+import app.revanced.api.configuration.routing.routes.configureAnnouncementsRoute
+import app.revanced.api.configuration.routing.routes.configurePatchesRoute
+import app.revanced.api.configuration.routing.routes.configureRootRoute
+import app.revanced.api.repository.ConfigurationRepository
+import io.ktor.server.application.*
+import io.ktor.server.routing.*
+import org.koin.ktor.ext.get
+
+internal fun Application.configureRouting() = routing {
+    val configuration = get<ConfigurationRepository>()
+
+    route("/v${configuration.apiVersion}") {
+        configureRootRoute()
+        configurePatchesRoute()
+        configureAnnouncementsRoute()
+    }
+}

src/main/kotlin/app/revanced/api/configuration/routing/routes/Announcements.kt

@@ -0,0 +1,86 @@
+package app.revanced.api.configuration.routing.routes
+
+import app.revanced.api.schema.APIAnnouncement
+import app.revanced.api.schema.APIAnnouncementArchivedAt
+import app.revanced.api.services.AnnouncementService
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.auth.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import io.ktor.server.util.*
+import org.koin.ktor.ext.get as koinGet
+
+internal fun Route.configureAnnouncementsRoute() = route("/announcements") {
+    val announcementService = koinGet<AnnouncementService>()
+
+    route("/{channel}/latest") {
+        get("/id") {
+            val channel: String by call.parameters
+
+            call.respond(
+                announcementService.latestId(channel) ?: return@get call.respond(HttpStatusCode.NotFound),
+            )
+        }
+
+        get {
+            val channel: String by call.parameters
+
+            call.respond(
+                announcementService.latest(channel) ?: return@get call.respond(HttpStatusCode.NotFound),
+            )
+        }
+    }
+
+    get("/{channel}") {
+        val channel: String by call.parameters
+
+        call.respond(announcementService.all(channel))
+    }
+
+    route("/latest") {
+        get("/id") {
+            call.respond(announcementService.latestId() ?: return@get call.respond(HttpStatusCode.NotFound))
+        }
+
+        get {
+            call.respond(announcementService.latest() ?: return@get call.respond(HttpStatusCode.NotFound))
+        }
+    }
+
+    get {
+        call.respond(announcementService.all())
+    }
+
+    authenticate("jwt") {
+        post {
+            announcementService.new(call.receive<APIAnnouncement>())
+        }
+
+        post("/{id}/archive") {
+            val id: Int by call.parameters
+            val archivedAt = call.receiveNullable<APIAnnouncementArchivedAt>()?.archivedAt
+
+            announcementService.archive(id, archivedAt)
+        }
+
+        post("/{id}/unarchive") {
+            val id: Int by call.parameters
+
+            announcementService.unarchive(id)
+        }
+
+        patch("/{id}") {
+            val id: Int by call.parameters
+
+            announcementService.update(id, call.receive<APIAnnouncement>())
+        }
+
+        delete("/{id}") {
+            val id: Int by call.parameters
+
+            announcementService.delete(id)
+        }
+    }
+}

src/main/kotlin/app/revanced/api/configuration/routing/routes/ApiRoute.kt

@@ -0,0 +1,41 @@
+package app.revanced.api.configuration.routing.routes
+
+import app.revanced.api.services.ApiService
+import app.revanced.api.services.AuthService
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.auth.*
+import io.ktor.server.http.content.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import org.koin.ktor.ext.get
+
+internal fun Route.configureRootRoute() {
+    val apiService = get<ApiService>()
+    val authService = get<AuthService>()
+
+    get("/contributors") {
+        call.respond(apiService.contributors())
+    }
+
+    get("/team") {
+        call.respond(apiService.team())
+    }
+
+    route("/ping") {
+        handle {
+            call.respond(HttpStatusCode.NoContent)
+        }
+    }
+
+    authenticate("basic") {
+        get("/token") {
+            call.respond(authService.newToken())
+        }
+    }
+
+    staticResources("/", "/static/api") {
+        contentType { ContentType.Application.Json }
+        extensions("json")
+    }
+}

src/main/kotlin/app/revanced/api/configuration/routing/routes/PatchesRoute.kt

@@ -0,0 +1,26 @@
+package app.revanced.api.configuration.routing.routes
+
+import app.revanced.api.services.PatchesService
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import org.koin.ktor.ext.get as koinGet
+
+internal fun Route.configurePatchesRoute() = route("/patches") {
+    val patchesService = koinGet<PatchesService>()
+
+    route("latest") {
+        get {
+            call.respond(patchesService.latestRelease())
+        }
+
+        get("/version") {
+            call.respond(patchesService.latestVersion())
+        }
+
+        get("/list") {
+            call.respondBytes(ContentType.Application.Json) { patchesService.list() }
+        }
+    }
+}

src/main/kotlin/app/revanced/api/modules/Dependencies.kt

@@ -1,75 +0,0 @@
-package app.revanced.api.modules
-
-import app.revanced.api.backend.Backend
-import app.revanced.api.backend.github.GitHubBackend
-import app.revanced.api.schema.APIConfiguration
-import com.akuleshov7.ktoml.Toml
-import com.akuleshov7.ktoml.source.decodeFromStream
-import io.github.cdimascio.dotenv.Dotenv
-import io.ktor.server.application.*
-import org.jetbrains.exposed.sql.Database
-import org.koin.dsl.bind
-import org.koin.dsl.module
-import org.koin.ktor.plugin.Koin
-import java.io.File
-
-fun Application.configureDependencies() {
-    install(Koin) {
-        modules(
-            globalModule,
-            gitHubBackendModule,
-            databaseModule,
-            authModule,
-        )
-    }
-}
-
-val globalModule = module {
-    single {
-        Dotenv.configure()
-            .systemProperties()
-            .load()
-    }
-    single {
-        val configFilePath = get<Dotenv>()["CONFIG_FILE_PATH"]
-        Toml.decodeFromStream<APIConfiguration>(File(configFilePath).inputStream())
-    }
-}
-
-val gitHubBackendModule = module {
-    single {
-        val token = get<Dotenv>()["GITHUB_TOKEN"]
-        GitHubBackend(token)
-    } bind Backend::class
-}
-
-val databaseModule = module {
-    single {
-        val dotenv = get<Dotenv>()
-
-        Database.connect(
-            url = dotenv["DB_URL"],
-            user = dotenv["DB_USER"],
-            password = dotenv["DB_PASSWORD"],
-            driver = "org.h2.Driver",
-        )
-    }
-    factory<AnnouncementService> {
-        AnnouncementService(get())
-    }
-}
-
-val authModule = module {
-    single {
-        val dotenv = get<Dotenv>()
-
-        val jwtSecret = dotenv["JWT_SECRET"]
-        val issuer = dotenv["JWT_ISSUER"]
-        val validityInMin = dotenv["JWT_VALIDITY_IN_MIN"].toInt()
-
-        val basicUsername = dotenv["BASIC_USERNAME"]
-        val basicPassword = dotenv["BASIC_PASSWORD"]
-
-        AuthService(issuer, validityInMin, jwtSecret, basicUsername, basicPassword)
-    }
-}

src/main/kotlin/app/revanced/api/modules/Routing.kt

@@ -1,232 +0,0 @@
-package app.revanced.api.modules
-
-import app.revanced.api.backend.Backend
-import app.revanced.api.schema.*
-import app.revanced.library.PatchUtils
-import app.revanced.patcher.PatchBundleLoader
-import com.github.benmanes.caffeine.cache.Caffeine
-import io.ktor.http.*
-import io.ktor.server.application.*
-import io.ktor.server.auth.*
-import io.ktor.server.http.content.*
-import io.ktor.server.request.*
-import io.ktor.server.response.*
-import io.ktor.server.routing.*
-import io.ktor.util.pipeline.*
-import kotlinx.coroutines.async
-import kotlinx.coroutines.awaitAll
-import java.io.ByteArrayOutputStream
-import java.net.URL
-import org.koin.ktor.ext.get as koinGet
-
-fun Application.configureRouting() {
-    val backend: Backend = koinGet()
-    val configuration: APIConfiguration = koinGet()
-    val announcementService: AnnouncementService = koinGet()
-    val authService: AuthService = koinGet()
-
-    routing {
-        route("/v${configuration.apiVersion}") {
-            route("/announcements") {
-                suspend fun PipelineContext<*, ApplicationCall>.announcement(block: AnnouncementService.() -> APIResponseAnnouncement?) =
-                    announcementService.block()?.let { call.respond(it) }
-                        ?: call.respond(HttpStatusCode.NotFound)
-
-                suspend fun PipelineContext<*, ApplicationCall>.announcementId(block: AnnouncementService.() -> APILatestAnnouncement?) =
-                    announcementService.block()?.let { call.respond(it) }
-                        ?: call.respond(HttpStatusCode.NotFound)
-
-                suspend fun PipelineContext<*, ApplicationCall>.channel(block: suspend (String) -> Unit) =
-                    block(call.parameters["channel"]!!)
-
-                route("/{channel}/latest") {
-                    get("/id") {
-                        channel {
-                            announcementId {
-                                latestId(it)
-                            }
-                        }
-                    }
-
-                    get {
-                        channel {
-                            announcement {
-                                latest(it)
-                            }
-                        }
-                    }
-                }
-
-                get("/{channel}") {
-                    channel {
-                        call.respond(announcementService.read(it))
-                    }
-                }
-
-                route("/latest") {
-                    get("/id") {
-                        announcementId {
-                            latestId()
-                        }
-                    }
-
-                    get {
-                        announcement {
-                            latest()
-                        }
-                    }
-                }
-
-                get {
-                    call.respond(announcementService.read())
-                }
-
-                authenticate("jwt") {
-                    suspend fun PipelineContext<*, ApplicationCall>.id(block: suspend (Int) -> Unit) =
-                        call.parameters["id"]!!.toIntOrNull()?.let {
-                            block(it)
-                        } ?: call.respond(HttpStatusCode.BadRequest)
-
-                    post {
-                        announcementService.new(call.receive<APIAnnouncement>())
-                    }
-
-                    post("/{id}/archive") {
-                        id {
-                            val archivedAt = call.receiveNullable<APIAnnouncementArchivedAt>()?.archivedAt
-                            announcementService.archive(it, archivedAt)
-                        }
-                    }
-
-                    post("/{id}/unarchive") {
-                        id {
-                            announcementService.unarchive(it)
-                        }
-                    }
-
-                    patch("/{id}") {
-                        id {
-                            announcementService.update(it, call.receive<APIAnnouncement>())
-                        }
-                    }
-
-                    delete("/{id}") {
-                        id {
-                            announcementService.delete(it)
-                        }
-                    }
-                }
-            }
-
-            route("/patches") {
-                route("latest") {
-                    get {
-                        val patchesRelease =
-                            backend.getRelease(configuration.organization, configuration.patchesRepository)
-                        val integrationsReleases = configuration.integrationsRepositoryNames.map {
-                            async { backend.getRelease(configuration.organization, it) }
-                        }.awaitAll()
-
-                        val assets = (patchesRelease.assets + integrationsReleases.flatMap { it.assets })
-                            .map { APIAsset(it.downloadUrl) }
-                            .filter { it.type != APIAsset.Type.UNKNOWN }
-                            .toSet()
-
-                        val apiRelease = APIRelease(
-                            patchesRelease.tag,
-                            patchesRelease.createdAt,
-                            patchesRelease.releaseNote,
-                            assets,
-                        )
-
-                        call.respond(apiRelease)
-                    }
-
-                    get("/version") {
-                        val patchesRelease =
-                            backend.getRelease(configuration.organization, configuration.patchesRepository)
-
-                        val apiPatchesRelease = APIReleaseVersion(patchesRelease.tag)
-
-                        call.respond(apiPatchesRelease)
-                    }
-
-                    val patchesListCache = Caffeine
-                        .newBuilder()
-                        .maximumSize(1)
-                        .build<String, ByteArray>()
-
-                    get("/list") {
-                        val patchesRelease =
-                            backend.getRelease(configuration.organization, configuration.patchesRepository)
-
-                        val patchesListByteArray = patchesListCache.getIfPresent(patchesRelease.tag) ?: run {
-                            val downloadUrl = patchesRelease.assets
-                                .map { APIAsset(it.downloadUrl) }
-                                .find { it.type == APIAsset.Type.PATCHES }
-                                ?.downloadUrl
-
-                            val patches = kotlin.io.path.createTempFile().toFile().apply {
-                                outputStream().use { URL(downloadUrl).openStream().copyTo(it) }
-                            }.let { file ->
-                                PatchBundleLoader.Jar(file).also { file.delete() }
-                            }
-
-                            ByteArrayOutputStream().use { stream ->
-                                PatchUtils.Json.serialize(patches, outputStream = stream)
-
-                                stream.toByteArray()
-                            }.also {
-                                patchesListCache.put(patchesRelease.tag, it)
-                            }
-                        }
-
-                        call.respondBytes(ContentType.Application.Json) { patchesListByteArray }
-                    }
-                }
-            }
-
-            staticResources("/", "/static/api") {
-                contentType { ContentType.Application.Json }
-                extensions("json")
-            }
-
-            get("/contributors") {
-                val contributors =
-                    configuration.contributorsRepositoryNames.map {
-                        async {
-                            APIContributable(
-                                it,
-                                backend.getContributors(configuration.organization, it).map {
-                                    APIContributor(it.name, it.avatarUrl, it.url, it.contributions)
-                                }.toSet(),
-                            )
-                        }
-                    }.awaitAll()
-
-                call.respond(contributors)
-            }
-
-            get("/team") {
-                val team =
-                    backend.getMembers(configuration.organization).map {
-                        APIMember(it.name, it.avatarUrl, it.url, it.gpgKeysUrl)
-                    }
-
-                call.respond(team)
-            }
-
-            route("/ping") {
-                handle {
-                    call.respond(HttpStatusCode.NoContent)
-                }
-            }
-
-            authenticate("basic") {
-                get("/token") {
-                    call.respond(authService.newToken())
-                }
-            }
-        }
-    }
-}

src/main/kotlin/app/revanced/api/modules/Serialization.kt

@@ -1,11 +0,0 @@
-package app.revanced.api.modules
-
-import io.ktor.serialization.kotlinx.json.*
-import io.ktor.server.application.*
-import io.ktor.server.plugins.contentnegotiation.*
-
-fun Application.configureSerialization() {
-    install(ContentNegotiation) {
-        json()
-    }
-}

src/main/kotlin/app/revanced/api/repository/AnnouncementRepository.kt

@@ -1,6 +1,6 @@
-package app.revanced.api.modules
+package app.revanced.api.repository
 
-import app.revanced.api.modules.AnnouncementService.Attachments.announcement
+import app.revanced.api.repository.AnnouncementRepository.AttachmentTable.announcement
 import app.revanced.api.schema.APIAnnouncement
 import app.revanced.api.schema.APILatestAnnouncement
 import app.revanced.api.schema.APIResponseAnnouncement
@@ -10,96 +10,54 @@ import org.jetbrains.exposed.dao.IntEntityClass
 import org.jetbrains.exposed.dao.id.EntityID
 import org.jetbrains.exposed.dao.id.IntIdTable
 import org.jetbrains.exposed.sql.*
-import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.kotlin.datetime.datetime
 import org.jetbrains.exposed.sql.transactions.transaction
 
-class AnnouncementService(private val database: Database) {
-    private object Announcements : IntIdTable() {
-        val author = varchar("author", 32).nullable()
-        val title = varchar("title", 64)
-        val content = text("content").nullable()
-        val channel = varchar("channel", 16).nullable()
-        val createdAt = datetime("createdAt")
-        val archivedAt = datetime("archivedAt").nullable()
-        val level = integer("level")
-    }
-
-    private object Attachments : IntIdTable() {
-        val url = varchar("url", 256)
-        val announcement = reference("announcement", Announcements, onDelete = ReferenceOption.CASCADE)
-    }
-
-    class Announcement(id: EntityID<Int>) : IntEntity(id) {
-        companion object : IntEntityClass<Announcement>(Announcements)
-
-        var author by Announcements.author
-        var title by Announcements.title
-        var content by Announcements.content
-        val attachments by Attachment referrersOn announcement
-        var channel by Announcements.channel
-        var createdAt by Announcements.createdAt
-        var archivedAt by Announcements.archivedAt
-        var level by Announcements.level
-
-        fun api() = APIResponseAnnouncement(
-            id.value,
-            author,
-            title,
-            content,
-            attachments.map(Attachment::url).toSet(),
-            channel,
-            createdAt,
-            archivedAt,
-            level,
-        )
-    }
-
-    class Attachment(id: EntityID<Int>) : IntEntity(id) {
-        companion object : IntEntityClass<Attachment>(Attachments)
-
-        var url by Attachments.url
-        var announcement by Announcement referencedOn Attachments.announcement
-    }
-
+internal class AnnouncementRepository(private val database: Database) {
     init {
         transaction {
-            SchemaUtils.create(Announcements, Attachments)
+            SchemaUtils.create(AnnouncementTable, AttachmentTable)
         }
     }
 
-    private fun <T> transaction(block: Transaction.() -> T) = transaction(database, block)
-
-    fun read() = transaction {
-        Announcement.all().map { it.api() }.toSet()
+    fun all() = transaction {
+        buildSet {
+            AnnouncementEntity.all().forEach { announcement ->
+                add(announcement.toApi())
+            }
+        }
     }
 
-    fun read(channel: String) = transaction {
-        Announcement.find { Announcements.channel eq channel }.map { it.api() }.toSet()
+    fun all(channel: String) = transaction {
+        buildSet {
+            AnnouncementEntity.find { AnnouncementTable.channel eq channel }.forEach { announcement ->
+                add(announcement.toApi())
+            }
+        }
     }
 
     fun delete(id: Int) = transaction {
-        val announcement = Announcement.findById(id) ?: return@transaction
+        val announcement = AnnouncementEntity.findById(id) ?: return@transaction
 
         announcement.delete()
     }
 
     fun latest() = transaction {
-        Announcement.all().maxByOrNull { it.createdAt }?.api()
+        AnnouncementEntity.all().maxByOrNull { it.createdAt }?.toApi()
     }
 
     fun latest(channel: String) = transaction {
-        Announcement.find { Announcements.channel eq channel }.maxByOrNull { it.createdAt }?.api()
+        AnnouncementEntity.find { AnnouncementTable.channel eq channel }.maxByOrNull { it.createdAt }?.toApi()
     }
 
     fun latestId() = transaction {
-        Announcement.all().maxByOrNull { it.createdAt }?.id?.value?.let {
+        AnnouncementEntity.all().maxByOrNull { it.createdAt }?.id?.value?.let {
             APILatestAnnouncement(it)
         }
     }
 
     fun latestId(channel: String) = transaction {
-        Announcement.find { Announcements.channel eq channel }.maxByOrNull { it.createdAt }?.id?.value?.let {
+        AnnouncementEntity.find { AnnouncementTable.channel eq channel }.maxByOrNull { it.createdAt }?.id?.value?.let {
             APILatestAnnouncement(it)
         }
     }
@@ -108,19 +66,19 @@ class AnnouncementService(private val database: Database) {
         id: Int,
         archivedAt: LocalDateTime?,
     ) = transaction {
-        Announcement.findById(id)?.apply {
+        AnnouncementEntity.findById(id)?.apply {
             this.archivedAt = archivedAt ?: java.time.LocalDateTime.now().toKotlinLocalDateTime()
         }
     }
 
     fun unarchive(id: Int) = transaction {
-        Announcement.findById(id)?.apply {
+        AnnouncementEntity.findById(id)?.apply {
             archivedAt = null
         }
     }
 
     fun new(new: APIAnnouncement) = transaction {
-        Announcement.new announcement@{
+        AnnouncementEntity.new announcement@{
             author = new.author
             title = new.title
             content = new.content
@@ -130,7 +88,7 @@ class AnnouncementService(private val database: Database) {
             level = new.level
         }.also { newAnnouncement ->
             new.attachmentUrls.map {
-                Attachment.new {
+                AttachmentEntity.new {
                     url = it
                     announcement = newAnnouncement
                 }
@@ -139,7 +97,7 @@ class AnnouncementService(private val database: Database) {
     }
 
     fun update(id: Int, new: APIAnnouncement) = transaction {
-        Announcement.findById(id)?.apply {
+        AnnouncementEntity.findById(id)?.apply {
             author = new.author
             title = new.title
             content = new.content
@@ -147,13 +105,66 @@ class AnnouncementService(private val database: Database) {
             archivedAt = new.archivedAt
             level = new.level
 
-            attachments.forEach(Attachment::delete)
+            attachments.forEach(AttachmentEntity::delete)
             new.attachmentUrls.map {
-                Attachment.new {
+                AttachmentEntity.new {
                     url = it
                     announcement = this@apply
                 }
             }
         }
     }
+
+    private fun <T> transaction(block: Transaction.() -> T) = transaction(database, block)
+
+    private object AnnouncementTable : IntIdTable() {
+        val author = varchar("author", 32).nullable()
+        val title = varchar("title", 64)
+        val content = text("content").nullable()
+        val channel = varchar("channel", 16).nullable()
+        val createdAt = datetime("createdAt")
+        val archivedAt = datetime("archivedAt").nullable()
+        val level = integer("level")
+    }
+
+    private object AttachmentTable : IntIdTable() {
+        val url = varchar("url", 256)
+        val announcement = reference("announcement", AnnouncementTable, onDelete = ReferenceOption.CASCADE)
+    }
+
+    class AnnouncementEntity(id: EntityID<Int>) : IntEntity(id) {
+        companion object : IntEntityClass<AnnouncementEntity>(AnnouncementTable)
+
+        var author by AnnouncementTable.author
+        var title by AnnouncementTable.title
+        var content by AnnouncementTable.content
+        val attachments by AttachmentEntity referrersOn announcement
+        var channel by AnnouncementTable.channel
+        var createdAt by AnnouncementTable.createdAt
+        var archivedAt by AnnouncementTable.archivedAt
+        var level by AnnouncementTable.level
+
+        fun toApi() = APIResponseAnnouncement(
+            id.value,
+            author,
+            title,
+            content,
+            attachmentUrls = buildSet {
+                attachments.forEach {
+                    add(it.url)
+                }
+            },
+            channel,
+            createdAt,
+            archivedAt,
+            level,
+        )
+    }
+
+    class AttachmentEntity(id: EntityID<Int>) : IntEntity(id) {
+        companion object : IntEntityClass<AttachmentEntity>(AttachmentTable)
+
+        var url by AttachmentTable.url
+        var announcement by AnnouncementEntity referencedOn AttachmentTable.announcement
+    }
 }

src/main/kotlin/app/revanced/api/repository/ConfigurationRepository.kt

@@ -1,10 +1,10 @@
-package app.revanced.api.schema
+package app.revanced.api.repository
 
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
 @Serializable
-class APIConfiguration(
+internal class ConfigurationRepository(
     val organization: String,
     @SerialName("patches-repository")
     val patchesRepository: String,

src/main/kotlin/app/revanced/api/repository/backend/BackendRepository.kt

@@ -1,4 +1,4 @@
-package app.revanced.api.backend
+package app.revanced.api.repository.backend
 
 import io.ktor.client.*
 import io.ktor.client.engine.okhttp.*
@@ -10,7 +10,7 @@ import kotlinx.serialization.Serializable
  *
  *  @param httpClientConfig The configuration of the HTTP client.
  */
-abstract class Backend(
+abstract class BackendRepository internal constructor(
     httpClientConfig: HttpClientConfig<OkHttpConfig>.() -> Unit = {},
 ) {
     protected val client: HttpClient = HttpClient(OkHttp, httpClientConfig)
@@ -114,7 +114,7 @@ abstract class Backend(
      * @param tag The tag of the release. If null, the latest release is returned.
      * @return The release.
      */
-    abstract suspend fun getRelease(
+    abstract suspend fun release(
         owner: String,
         repository: String,
         tag: String? = null,
@@ -127,7 +127,7 @@ abstract class Backend(
      * @param repository The name of the repository.
      * @return The contributors.
      */
-    abstract suspend fun getContributors(owner: String, repository: String): Set<BackendOrganization.BackendRepository.BackendContributor>
+    abstract suspend fun contributors(owner: String, repository: String): Set<BackendOrganization.BackendRepository.BackendContributor>
 
     /**
      * Get the members of an organization.
@@ -135,5 +135,5 @@ abstract class Backend(
      * @param organization The name of the organization.
      * @return The members.
      */
-    abstract suspend fun getMembers(organization: String): Set<BackendOrganization.BackendMember>
+    abstract suspend fun members(organization: String): Set<BackendOrganization.BackendMember>
 }

src/main/kotlin/app/revanced/api/repository/backend/github/GitHubBackendRepository.kt

@@ -1,18 +1,18 @@
-package app.revanced.api.backend.github
+package app.revanced.api.repository.backend.github
 
-import app.revanced.api.backend.Backend
-import app.revanced.api.backend.Backend.BackendOrganization.BackendMember
-import app.revanced.api.backend.Backend.BackendOrganization.BackendRepository.BackendContributor
-import app.revanced.api.backend.Backend.BackendOrganization.BackendRepository.BackendRelease
-import app.revanced.api.backend.Backend.BackendOrganization.BackendRepository.BackendRelease.BackendAsset
-import app.revanced.api.backend.github.api.Request
-import app.revanced.api.backend.github.api.Request.Organization.Members
-import app.revanced.api.backend.github.api.Request.Organization.Repository.Contributors
-import app.revanced.api.backend.github.api.Request.Organization.Repository.Releases
-import app.revanced.api.backend.github.api.Response
-import app.revanced.api.backend.github.api.Response.GitHubOrganization.GitHubMember
-import app.revanced.api.backend.github.api.Response.GitHubOrganization.GitHubRepository.GitHubContributor
-import app.revanced.api.backend.github.api.Response.GitHubOrganization.GitHubRepository.GitHubRelease
+import app.revanced.api.repository.backend.BackendRepository
+import app.revanced.api.repository.backend.BackendRepository.BackendOrganization.BackendMember
+import app.revanced.api.repository.backend.BackendRepository.BackendOrganization.BackendRepository.BackendContributor
+import app.revanced.api.repository.backend.BackendRepository.BackendOrganization.BackendRepository.BackendRelease
+import app.revanced.api.repository.backend.BackendRepository.BackendOrganization.BackendRepository.BackendRelease.BackendAsset
+import app.revanced.api.repository.backend.github.api.Request
+import app.revanced.api.repository.backend.github.api.Request.Organization.Members
+import app.revanced.api.repository.backend.github.api.Request.Organization.Repository.Contributors
+import app.revanced.api.repository.backend.github.api.Request.Organization.Repository.Releases
+import app.revanced.api.repository.backend.github.api.Response
+import app.revanced.api.repository.backend.github.api.Response.GitHubOrganization.GitHubMember
+import app.revanced.api.repository.backend.github.api.Response.GitHubOrganization.GitHubRepository.GitHubContributor
+import app.revanced.api.repository.backend.github.api.Response.GitHubOrganization.GitHubRepository.GitHubRelease
 import io.ktor.client.call.*
 import io.ktor.client.plugins.*
 import io.ktor.client.plugins.auth.*
@@ -30,7 +30,7 @@ import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonNamingStrategy
 
 @OptIn(ExperimentalSerializationApi::class)
-class GitHubBackend(token: String? = null) : Backend({
+class GitHubBackendRepository(token: String? = null) : BackendRepository({
     install(HttpCache)
     install(Resources)
     install(ContentNegotiation) {
@@ -59,7 +59,7 @@ class GitHubBackend(token: String? = null) : Backend({
         }
     }
 }) {
-    override suspend fun getRelease(
+    override suspend fun release(
         owner: String,
         repository: String,
         tag: String?,
@@ -80,7 +80,7 @@ class GitHubBackend(token: String? = null) : Backend({
         )
     }
 
-    override suspend fun getContributors(
+    override suspend fun contributors(
         owner: String,
         repository: String,
     ): Set<BackendContributor> {
@@ -96,7 +96,7 @@ class GitHubBackend(token: String? = null) : Backend({
         }.toSet()
     }
 
-    override suspend fun getMembers(organization: String): Set<BackendMember> {
+    override suspend fun members(organization: String): Set<BackendMember> {
         // Get the list of members of the organization.
         val members: Set<GitHubMember> = client.get(Members(organization)).body()
 

src/main/kotlin/app/revanced/api/repository/backend/github/api/Request.kt

@@ -1,4 +1,4 @@
-package app.revanced.api.backend.github.api
+package app.revanced.api.repository.backend.github.api
 
 import io.ktor.resources.*
 

src/main/kotlin/app/revanced/api/repository/backend/github/api/Response.kt

@@ -1,4 +1,4 @@
-package app.revanced.api.backend.github.api
+package app.revanced.api.repository.backend.github.api
 
 import kotlinx.datetime.Instant
 import kotlinx.serialization.Serializable

src/main/kotlin/app/revanced/api/services/AnnouncementService.kt

@@ -0,0 +1,35 @@
+package app.revanced.api.services
+
+import app.revanced.api.repository.AnnouncementRepository
+import app.revanced.api.schema.APIAnnouncement
+import app.revanced.api.schema.APILatestAnnouncement
+import kotlinx.datetime.LocalDateTime
+
+internal class AnnouncementService(
+    private val announcementRepository: AnnouncementRepository,
+) {
+    fun latestId(channel: String): APILatestAnnouncement? = announcementRepository.latestId(channel)
+    fun latestId(): APILatestAnnouncement? = announcementRepository.latestId()
+
+    fun latest(channel: String) = announcementRepository.latest(channel)
+    fun latest() = announcementRepository.latest()
+
+    fun all(channel: String) = announcementRepository.all(channel)
+    fun all() = announcementRepository.all()
+
+    fun new(new: APIAnnouncement) {
+        announcementRepository.new(new)
+    }
+    fun archive(id: Int, archivedAt: LocalDateTime?) {
+        announcementRepository.archive(id, archivedAt)
+    }
+    fun unarchive(id: Int) {
+        announcementRepository.unarchive(id)
+    }
+    fun update(id: Int, new: APIAnnouncement) {
+        announcementRepository.update(id, new)
+    }
+    fun delete(id: Int) {
+        announcementRepository.delete(id)
+    }
+}

src/main/kotlin/app/revanced/api/services/ApiService.kt

@@ -0,0 +1,33 @@
+package app.revanced.api.services
+
+import app.revanced.api.repository.ConfigurationRepository
+import app.revanced.api.repository.backend.BackendRepository
+import app.revanced.api.schema.APIContributable
+import app.revanced.api.schema.APIContributor
+import app.revanced.api.schema.APIMember
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.withContext
+
+internal class ApiService(
+    private val backendRepository: BackendRepository,
+    private val configurationRepository: ConfigurationRepository,
+) {
+    suspend fun contributors() = withContext(Dispatchers.IO) {
+        configurationRepository.contributorsRepositoryNames.map {
+            async {
+                APIContributable(
+                    it,
+                    backendRepository.contributors(configurationRepository.organization, it).map {
+                        APIContributor(it.name, it.avatarUrl, it.url, it.contributions)
+                    }.toSet(),
+                )
+            }
+        }
+    }.awaitAll()
+
+    suspend fun team() = backendRepository.members(configurationRepository.organization).map {
+        APIMember(it.name, it.avatarUrl, it.url, it.gpgKeysUrl)
+    }
+}

src/main/kotlin/app/revanced/api/services/AuthService.kt

@@ -1,15 +1,14 @@
-package app.revanced.api.modules
+package app.revanced.api.services
 
 import com.auth0.jwt.JWT
 import com.auth0.jwt.algorithms.Algorithm
 import io.ktor.server.application.*
 import io.ktor.server.auth.*
 import io.ktor.server.auth.jwt.*
-import org.koin.ktor.ext.get
 import java.util.*
 import kotlin.time.Duration.Companion.minutes
 
-class AuthService(
+internal class AuthService(
     private val issuer: String,
     private val validityInMin: Int,
     private val jwtSecret: String,
@@ -46,8 +45,3 @@ class AuthService(
             .sign(Algorithm.HMAC256(jwtSecret))
     }
 }
-
-fun Application.configureSecurity() {
-    val configureSecurity = get<AuthService>().configureSecurity
-    configureSecurity()
-}

src/main/kotlin/app/revanced/api/services/PatchesService.kt

@@ -0,0 +1,87 @@
+package app.revanced.api.services
+
+import app.revanced.api.repository.ConfigurationRepository
+import app.revanced.api.repository.backend.BackendRepository
+import app.revanced.api.schema.APIAsset
+import app.revanced.api.schema.APIRelease
+import app.revanced.api.schema.APIReleaseVersion
+import app.revanced.library.PatchUtils
+import app.revanced.patcher.PatchBundleLoader
+import com.github.benmanes.caffeine.cache.Caffeine
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.withContext
+import java.io.ByteArrayOutputStream
+import java.net.URL
+
+internal class PatchesService(
+    private val backendRepository: BackendRepository,
+    private val configurationRepository: ConfigurationRepository,
+) {
+    private val patchesListCache = Caffeine
+        .newBuilder()
+        .maximumSize(1)
+        .build<String, ByteArray>()
+
+    suspend fun latestRelease(): APIRelease {
+        val patchesRelease = backendRepository.release(
+            configurationRepository.organization,
+            configurationRepository.patchesRepository,
+        )
+        val integrationsReleases = withContext(Dispatchers.Default) {
+            configurationRepository.integrationsRepositoryNames.map {
+                async { backendRepository.release(configurationRepository.organization, it) }
+            }
+        }.awaitAll()
+
+        val assets = (patchesRelease.assets + integrationsReleases.flatMap { it.assets })
+            .map { APIAsset(it.downloadUrl) }
+            .filter { it.type != APIAsset.Type.UNKNOWN }
+            .toSet()
+
+        return APIRelease(
+            patchesRelease.tag,
+            patchesRelease.createdAt,
+            patchesRelease.releaseNote,
+            assets,
+        )
+    }
+
+    suspend fun latestVersion(): APIReleaseVersion {
+        val patchesRelease = backendRepository.release(
+            configurationRepository.organization,
+            configurationRepository.patchesRepository,
+        )
+
+        return APIReleaseVersion(patchesRelease.tag)
+    }
+
+    suspend fun list(): ByteArray {
+        val patchesRelease = backendRepository.release(
+            configurationRepository.organization,
+            configurationRepository.patchesRepository,
+        )
+
+        return patchesListCache.getIfPresent(patchesRelease.tag) ?: run {
+            val downloadUrl = patchesRelease.assets
+                .map { APIAsset(it.downloadUrl) }
+                .find { it.type == APIAsset.Type.PATCHES }
+                ?.downloadUrl
+
+            val patches = kotlin.io.path.createTempFile().toFile().apply {
+                outputStream().use { URL(downloadUrl).openStream().copyTo(it) }
+            }.let { file ->
+                PatchBundleLoader.Jar(file).also { file.delete() }
+            }
+
+            ByteArrayOutputStream().use { stream ->
+                PatchUtils.Json.serialize(patches, outputStream = stream)
+
+                stream.toByteArray()
+            }.also {
+                patchesListCache.put(patchesRelease.tag, it)
+            }
+        }
+    }
+}

src/main/resources/static/api/about.json

@@ -80,4 +80,4 @@
       }
     ]
   }
-}
+}

src/test/kotlin/app/revanced/ApplicationTest.kt

@@ -1,57 +0,0 @@
-package app.revanced
-
-import app.revanced.api.modules.*
-import app.revanced.api.schema.APIConfiguration
-import com.akuleshov7.ktoml.Toml
-import io.github.cdimascio.dotenv.Dotenv
-import io.ktor.client.request.*
-import io.ktor.client.statement.*
-import io.ktor.http.*
-import io.ktor.server.testing.*
-import io.ktor.util.*
-import io.mockk.every
-import io.mockk.mockk
-import kotlinx.serialization.encodeToString
-import kotlin.test.*
-
-class ApplicationTest {
-    @Test
-    fun `successfully create a token`() = testApplication {
-        val apiConfigurationFile = kotlin.io.path.createTempFile().toFile().apply {
-            Toml.encodeToString(
-                APIConfiguration(
-                    organization = "ReVanced",
-                    patchesRepository = "",
-                    integrationsRepositoryNames = setOf(),
-                    contributorsRepositoryNames = setOf(),
-                ),
-            ).let(::writeText)
-
-            deleteOnExit()
-        }
-
-        val dotenv = mockk<Dotenv>()
-        every { dotenv[any()] } returns "ReVanced"
-        every { dotenv["JWT_VALIDITY_IN_MIN"] } returns "5"
-        every { dotenv["CONFIG_FILE_PATH"] } returns apiConfigurationFile.absolutePath
-
-        application {
-            configureDependencies()
-            configureHTTP()
-            configureSerialization()
-            configureSecurity()
-            configureRouting()
-        }
-
-        val token = client.get("/v1/token") {
-            headers {
-                append(
-                    HttpHeaders.Authorization,
-                    "Basic ${"${dotenv["BASIC_USERNAME"]}:${dotenv["BASIC_PASSWORD"]}".encodeBase64()}",
-                )
-            }
-        }.bodyAsText()
-
-        assert(token.isNotEmpty())
-    }
-}