backend implementation

apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/data/BackendUpdateFetcher.kt

@@ -0,0 +1,31 @@
+package ru.shadowsparky.vbox.backend.data
+
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
+import org.koin.core.annotation.Factory
+import ru.shadowsparky.backend.data.EnvFetcher
+import ru.shadowsparky.domain.DispatcherProvider
+import ru.shadowsparky.updater.domain.UpdateFetcher
+import ru.shadowsparky.updater.domain.UpdateInfo
+import java.io.File
+
+@Factory
+class BackendUpdateFetcher(
+    private val envFetcher: EnvFetcher,
+    private val json: Json,
+    private val dispatcherProvider: DispatcherProvider
+) : UpdateFetcher {
+    private var config: UpdateInfo? = null
+
+    override suspend fun fetch(versionCode: Long): UpdateInfo = withContext(dispatcherProvider.io) {
+        config?.let { return@withContext it }
+        val configPath = envFetcher.get("UPDATE_CONFIG")
+        if (configPath.isBlank()) {
+            UpdateInfo()
+        } else {
+            json.decodeFromString<UpdateInfo>(File(configPath).readText()).apply {
+                config = this
+            }
+        }
+    }
+}

apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/di/EntryPoint.kt

@@ -1,12 +1,13 @@
 package ru.shadowsparky.vbox.backend.di
 
-import kotlinx.serialization.json.Json
 import org.koin.core.annotation.Named
 import org.koin.core.annotation.Single
 import ru.shadowsparky.backend.data.TokenVerifier
 import ru.shadowsparky.backend.domain.JwtInfo
 import ru.shadowsparky.backend.domain.LoginVerifier
+import ru.shadowsparky.updater.domain.UpdateFetcher
 import ru.shadowsparky.vbox.backend.data.BackendRemoteEventHandler
+import ru.shadowsparky.vbox.backend.data.BackendUpdateFetcher
 import ru.shadowsparky.vbox.backend.data.auth.AuthTokenRepositoryFactory
 import ru.shadowsparky.vbox.backend.data.tags.MovieTagRepositoryFactory
 import ru.shadowsparky.vbox.backend.data.tags.UserTagRepositoryFactory
@@ -22,9 +23,9 @@ class RoutingEntryPoint(
     val searchFactory: SearchRepositoryFactory,
     val recentlyFactory: RecentlyWatchedRepositoryFactory,
     val savedMovieFactory: SavedMovieRepositoryFactory,
-    val json: Json,
     val movieTagFactory: MovieTagRepositoryFactory,
-    val userTagFactory: UserTagRepositoryFactory
+    val userTagFactory: UserTagRepositoryFactory,
+    val updateFetcher: UpdateFetcher
 )
 
 @Single

apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/presentation/routing/AuthRouting.kt

@@ -46,5 +46,6 @@ fun Routing.setupAuthMethods(
         setupRecentlyWatched(recentlyFactory)
         setupSavedMovie(savedMovieFactory)
         setupTagsRouting(userTagFactory, movieTagFactory)
+        setupUpdates(updateFetcher)
     }
 }

apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/presentation/routing/UpdateRouting.kt

@@ -0,0 +1,15 @@
+package ru.shadowsparky.vbox.backend.presentation.routing
+
+import io.ktor.server.response.respond
+import io.ktor.server.routing.Routing
+import io.ktor.server.routing.get
+import io.ktor.server.util.getOrFail
+import ru.shadowsparky.updater.domain.UpdateFetcher
+import ru.shadowsparky.vbox.shared.domain.DYNAMIC_PREFIX
+
+fun Routing.setupUpdates(updateFetcher: UpdateFetcher) {
+    get("$DYNAMIC_PREFIX/checkUpdates") {
+        val versionCode = call.parameters.getOrFail(UpdateFetcher.ARG_VERSION_CODE).toLong()
+        call.respond(updateFetcher.fetch(versionCode))
+    }
+}