Fix/backup restore with invalid settings (#1793)

* Fix typo in setting validation error message

* Convert value to internal type before validating it

* Only update setting in case value is valid

* Ignore settings validation errors on backup restore

* Remove potential not privacy safe value from logs

server/server-config-generate/src/main/kotlin/suwayomi/tachidesk/server/settings/generation/SettingsBackupSettingsHandlerGenerator.kt

@@ -35,7 +35,7 @@ object SettingsBackupSettingsHandlerGenerator {
         appendLine(
             KotlinFileGeneratorHelper.createImports(
                 listOf(
-                    "suwayomi.tachidesk.graphql.mutations.SettingsMutation",
+                    "suwayomi.tachidesk.server.settings.SettingsUpdater",
                     "suwayomi.tachidesk.manga.impl.backup.BackupFlags",
                     "suwayomi.tachidesk.manga.impl.backup.proto.models.BackupServerSettings",
                     "suwayomi.tachidesk.server.serverConfig",
@@ -77,7 +77,7 @@ object SettingsBackupSettingsHandlerGenerator {
         appendLine("fun restore(backupServerSettings: BackupServerSettings?) {".addIndentation(indentation))
         appendLine("if (backupServerSettings == null) { return }".addIndentation(contentIndentation))
         appendLine()
-        appendLine("SettingsMutation().updateSettings(".addIndentation(contentIndentation))
+        appendLine("SettingsUpdater.updateAll(".addIndentation(contentIndentation))
         appendLine("backupServerSettings.copy(".addIndentation(indentation * 3))
 
         val deprecatedSettings = settings.filter { it.typeInfo.restoreLegacy != null }

server/server-config/src/main/kotlin/suwayomi/tachidesk/server/settings/SettingDelegate.kt

@@ -109,7 +109,7 @@ open class SettingDelegate<T : Any>(
             val error = validate(initialValue)
             if (error != null) {
                 KotlinLogging.logger { }.warn {
-                    "Invalid config value ($initialValue) for $moduleName.$propertyName: $error. Using default value: $defaultValue"
+                    "Invalid config value for $moduleName.$propertyName: $error. Using default value: $defaultValue"
                 }
 
                 stateFlow.value = toValidValue?.let { it(initialValue) } ?: defaultValue
@@ -406,8 +406,8 @@ class DisableableDoubleSetting(
         validator = { value ->
             when {
                 value == 0.0 -> null
-                min != null && value < min -> "Value must 0.0 or be at least $min"
-                max != null && value > max -> "Value must 0.0 or not exceed $max"
+                min != null && value < min -> "Value must be 0.0 or be at least $min"
+                max != null && value > max -> "Value must be 0.0 or not exceed $max"
                 else -> null
             }
         },

server/src/main/kotlin/suwayomi/tachidesk/server/settings/SettingsUpdater.kt

@@ -9,6 +9,8 @@ import kotlin.reflect.KProperty1
 import kotlin.reflect.full.memberProperties
 
 object SettingsUpdater {
+    private val logger = KotlinLogging.logger { }
+
     private fun updateSetting(
         name: String,
         value: Any,
@@ -30,12 +32,21 @@ object SettingsUpdater {
                         ?.convertToInternalType
                         ?.invoke(value) ?: value
 
+                val validationError = SettingsValidator.validate(name, maybeConvertedValue)
+                val isValid = validationError == null
+
+                if (!isValid) {
+                    logger.warn { "Invalid value for setting $name: $validationError. Ignoring update." }
+
+                    return
+                }
+
                 // Normal update - MigratedConfigValue handles deprecated mappings automatically
                 @Suppress("UNCHECKED_CAST")
                 (stateFlow as MutableStateFlow<Any>).value = maybeConvertedValue
             }
         } catch (e: Exception) {
-            KotlinLogging.logger { }.error(e) { "Failed to update setting $name due to" }
+            logger.error(e) { "Failed to update setting $name due to" }
         }
     }
 

server/src/main/kotlin/suwayomi/tachidesk/server/settings/SettingsValidator.kt

@@ -3,24 +3,32 @@ package suwayomi.tachidesk.server.settings
 import suwayomi.tachidesk.graphql.types.Settings
 
 object SettingsValidator {
-    private fun validateSingle(
+    fun validate(
         name: String,
         value: Any?,
     ): String? {
         val metadata = SettingsRegistry.get(name) ?: return null
-        return metadata.validator?.invoke(value)
+
+        val maybeConvertedValue =
+            if (value != null) {
+                metadata.typeInfo.convertToInternalType?.invoke(value) ?: value
+            } else {
+                value
             }
 
-    private fun validateAll(
+        return metadata.validator?.invoke(maybeConvertedValue)
+    }
+
+    fun validate(
         values: Map<String, Any?>,
         ignoreNull: Boolean?,
     ): List<String> =
         values
             .filterValues { value -> ignoreNull == false || value != null }
-            .mapNotNull { (name, value) -> validateSingle(name, value)?.let { error -> "$name: $error" } }
+            .mapNotNull { (name, value) -> validate(name, value)?.let { error -> "$name: $error" } }
 
     fun validate(
         settings: Settings,
         ignoreNull: Boolean = false,
-    ): List<String> = validateAll(settings.asMap(), ignoreNull)
+    ): List<String> = validate(settings.asMap(), ignoreNull)
 }