Remove caching of extensions for gql mutation (#806)

The client should use the extension query to get "cached" extensions and the mutation to update the extensions

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/ExtensionsList.kt

@@ -35,10 +35,6 @@ object ExtensionsList {
 
     suspend fun fetchExtensions() {
         // update if 60 seconds has passed or requested offline and database is empty
-        if (lastUpdateCheck + 60.seconds.inWholeMilliseconds < System.currentTimeMillis()) {
-            logger.debug("Getting extensions list from the internet")
-            lastUpdateCheck = System.currentTimeMillis()
-
         val extensions =
             (listOf(ExtensionGithubApi.REPO_URL_PREFIX) + serverConfig.extensionRepos.value).map { repo ->
                 kotlin.runCatching {
@@ -51,13 +47,22 @@ object ExtensionsList {
             }
         val foundExtensions = extensions.mapNotNull { it.getOrNull() }.flatten()
         updateExtensionDatabase(foundExtensions)
+    }
+
+    suspend fun fetchExtensionsCached() {
+        // update if 60 seconds has passed or requested offline and database is empty
+        if (lastUpdateCheck + 60.seconds.inWholeMilliseconds < System.currentTimeMillis()) {
+            logger.debug("Getting extensions list from the internet")
+            lastUpdateCheck = System.currentTimeMillis()
+
+            fetchExtensions()
         } else {
             logger.debug("used cached extension list")
         }
     }
 
     suspend fun getExtensionList(): List<ExtensionDataClass> {
-        fetchExtensions()
+        fetchExtensionsCached()
         return extensionTableAsDataClass()
     }