refactor: type server identifiers

lib/database/app_database.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import '../media/ids.dart';
 import 'package:drift/drift.dart';
 import 'package:drift/native.dart';
 import 'package:flutter/foundation.dart';
@@ -258,7 +259,7 @@ class AppDatabase extends _$AppDatabase {
   }
 
   /// Get pending watch actions for a specific server
-  Future<List<OfflineWatchProgressItem>> getPendingWatchActionsForServer(String serverId, {String? profileId}) {
+  Future<List<OfflineWatchProgressItem>> getPendingWatchActionsForServer(ServerId serverId, {String? profileId}) {
     return (select(offlineWatchProgress)
           ..where(
             (t) =>
@@ -381,14 +382,14 @@ class AppDatabase extends _$AppDatabase {
   /// Insert or update a progress action (merges with existing).
   Future<void> upsertProgressAction({
     String? profileId,
-    required String serverId,
+    required ServerId serverId,
     String? clientScopeId,
     required String ratingKey,
     required int viewOffset,
     required int? duration,
     required bool shouldMarkWatched,
   }) async {
-    final globalKey = buildGlobalKey(serverId, ratingKey);
+    final globalKey = buildGlobalKey(ServerId(serverId), ratingKey);
     final now = DateTime.now().millisecondsSinceEpoch;
 
     await transaction(() async {
@@ -444,12 +445,12 @@ class AppDatabase extends _$AppDatabase {
   /// Removes conflicting actions for the same item.
   Future<void> insertWatchAction({
     String? profileId,
-    required String serverId,
+    required ServerId serverId,
     String? clientScopeId,
     required String ratingKey,
     required String actionType, // 'watched' or 'unwatched'
   }) async {
-    final globalKey = buildGlobalKey(serverId, ratingKey);
+    final globalKey = buildGlobalKey(ServerId(serverId), ratingKey);
     final now = DateTime.now().millisecondsSinceEpoch;
 
     // Remove conflicting actions (opposite action type and progress)
@@ -524,7 +525,7 @@ class AppDatabase extends _$AppDatabase {
 
   Future<void> insertSyncRule({
     String profileId = '',
-    required String serverId,
+    required ServerId serverId,
     required String ratingKey,
     required String globalKey,
     required String targetType,
@@ -570,7 +571,7 @@ class AppDatabase extends _$AppDatabase {
     if (profileId.isEmpty) return;
     final legacyRules = await (select(syncRules)..where((t) => t.profileId.equals(''))).get();
     for (final rule in legacyRules) {
-      final scopedKey = buildProfileScopedGlobalKey(profileId, rule.serverId, rule.ratingKey);
+      final scopedKey = buildProfileScopedGlobalKey(profileId, ServerId(rule.serverId), rule.ratingKey);
       final duplicate = await getSyncRule(scopedKey);
       if (duplicate != null) {
         await (delete(syncRules)..where((t) => t.id.equals(rule.id))).go();

lib/database/download_operations.dart

@@ -1,4 +1,5 @@
 import 'package:drift/drift.dart';
+import '../media/ids.dart';
 
 import 'app_database.dart';
 import '../models/download_models.dart';
@@ -76,7 +77,7 @@ extension DownloadDatabaseOperations on AppDatabase {
   }
 
   Future<void> insertDownload({
-    required String serverId,
+    required ServerId serverId,
     String? clientScopeId,
     required String ratingKey,
     required String globalKey,
@@ -209,14 +210,14 @@ extension DownloadDatabaseOperations on AppDatabase {
 
   Future<List<DownloadedMediaItem>> getEpisodesBySeason(
     String seasonKey, {
-    String? serverId,
+    ServerId? serverId,
     String? clientScopeId,
     bool filterClientScope = false,
   }) {
     return (select(downloadedMedia)..where(
           (t) =>
               t.parentRatingKey.equals(seasonKey) &
-              _optionalServerPredicate(t.serverId, serverId) &
+              _optionalServerPredicate(t.serverId, serverIdOrNull(serverId)) &
               _optionalClientScopePredicate(t.clientScopeId, clientScopeId, filterClientScope: filterClientScope),
         ))
         .get();
@@ -224,24 +225,24 @@ extension DownloadDatabaseOperations on AppDatabase {
 
   Future<List<DownloadedMediaItem>> getEpisodesByShow(
     String showKey, {
-    String? serverId,
+    ServerId? serverId,
     String? clientScopeId,
     bool filterClientScope = false,
   }) {
     return (select(downloadedMedia)..where(
           (t) =>
               t.grandparentRatingKey.equals(showKey) &
-              _optionalServerPredicate(t.serverId, serverId) &
+              _optionalServerPredicate(t.serverId, serverIdOrNull(serverId)) &
               _optionalClientScopePredicate(t.clientScopeId, clientScopeId, filterClientScope: filterClientScope),
         ))
         .get();
   }
 
-  Future<List<DownloadedMediaItem>> getDownloadsByServerId(String serverId) {
+  Future<List<DownloadedMediaItem>> getDownloadsByServerId(ServerId serverId) {
     return (select(downloadedMedia)..where((t) => t.serverId.equals(serverId))).get();
   }
 
-  Expression<bool> _optionalServerPredicate(GeneratedColumn<String> column, String? serverId) {
+  Expression<bool> _optionalServerPredicate(GeneratedColumn<String> column, ServerId? serverId) {
     return serverId == null ? const Constant(true) : column.equals(serverId);
   }