Compare webUI version with bundled webUI version (#969)

* Compare webUI version with bundled webUI version

The bundled webUI version was incorrectly compared with the minimum server version.
This worked until the latest release, because the bundled webUI version had a lower revision number than the server revision, however, with the latest release, it is now higher, resulting in no compatible webUI version to be found

* Consider bundled webUI version only for default flavor

* Add "isDefault" util function to WebUIFlavor

Author: schroda

server/src/main/kotlin/suwayomi/tachidesk/server/util/WebInterfaceManager.kt

@@ -136,6 +136,8 @@ enum class WebUIFlavor(
     }
 }
 
+fun WebUIFlavor.isDefault(): Boolean = this == WebUIFlavor.default
+
 object WebInterfaceManager {
     private val logger = KotlinLogging.logger {}
     private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
@@ -314,10 +316,7 @@ object WebInterfaceManager {
             // check if the bundled webUI version is a newer version than the current used version
             // this could be the case in case no compatible webUI version is available and a newer server version was installed
             val shouldUpdateToBundledVersion =
-                flavor.uiName == WebUIFlavor.default.uiName && extractVersion(getLocalVersion()) <
-                    extractVersion(
-                        BuildConfig.WEBUI_TAG,
-                    )
+                flavor.isDefault() && extractVersion(getLocalVersion()) < extractVersion(BuildConfig.WEBUI_TAG)
             if (shouldUpdateToBundledVersion) {
                 log.debug { "update to bundled version \"${BuildConfig.WEBUI_TAG}\"" }
 
@@ -375,7 +374,7 @@ object WebInterfaceManager {
             return
         }
 
-        if (flavor.uiName != WebUIFlavor.default.uiName) {
+        if (!flavor.isDefault()) {
             log.warn { "fallback to default webUI \"${WebUIFlavor.default.uiName}\"" }
 
             serverConfig.webUIFlavor.value = WebUIFlavor.default.uiName
@@ -613,11 +612,9 @@ object WebInterfaceManager {
                 webUIVersion = fetchPreviewVersion(flavor)
             }
 
-            val isCompatibleVersion =
-                minServerVersionNumber <= currentServerVersionNumber && minServerVersionNumber >=
-                    extractVersion(
-                        BuildConfig.WEBUI_TAG,
-                    )
+            val isNewerThanBundled =
+                !flavor.isDefault() || extractVersion(webUIVersion) >= extractVersion(BuildConfig.WEBUI_TAG)
+            val isCompatibleVersion = minServerVersionNumber <= currentServerVersionNumber && isNewerThanBundled
             if (isCompatibleVersion) {
                 return webUIVersion
             }