Convert fetched fileIDs to File objects

lib/db/files_db.dart

@@ -840,6 +840,25 @@ class FilesDB {
     return rows.isNotEmpty;
   }
 
+  Future<Map<int, File>> getFilesFromIDs(List<int> ids) async {
+    String inParam = "";
+    for (final id in ids) {
+      inParam += "'" + id.toString() + "',";
+    }
+    inParam = inParam.substring(0, inParam.length - 1);
+    final db = await instance.database;
+    final results = await db.query(
+      table,
+      where: '$columnUploadedFileID IN ($inParam)',
+    );
+    final files = _convertToFiles(results);
+    final result = <int, File>{};
+    for (final file in files) {
+      result[file.uploadedFileID] = file;
+    }
+    return result;
+  }
+
   List<File> _convertToFiles(List<Map<String, dynamic>> results) {
     final List<File> files = [];
     for (final result in results) {

lib/models/duplicate_files.dart

@@ -1,38 +1,50 @@
 import 'dart:convert';
 
-class DuplicateFiles {
-  final List<Duplicates> duplicates;
-  DuplicateFiles(this.duplicates);
+import 'package:photos/models/file.dart';
 
-  factory DuplicateFiles.fromMap(Map<String, dynamic> map) {
-    return DuplicateFiles(
-      List<Duplicates>.from(
-          map['duplicates']?.map((x) => Duplicates.fromMap(x))),
+class DuplicateFilesResponse {
+  final List<DuplicateItems> duplicates;
+  DuplicateFilesResponse(this.duplicates);
+
+  factory DuplicateFilesResponse.fromMap(Map<String, dynamic> map) {
+    return DuplicateFilesResponse(
+      List<DuplicateItems>.from(
+          map['duplicates']?.map((x) => DuplicateItems.fromMap(x))),
     );
   }
 
-  factory DuplicateFiles.fromJson(String source) =>
-      DuplicateFiles.fromMap(json.decode(source));
+  factory DuplicateFilesResponse.fromJson(String source) =>
+      DuplicateFilesResponse.fromMap(json.decode(source));
 
   @override
   String toString() => 'DuplicateFiles(duplicates: $duplicates)';
 }
 
-class Duplicates {
+class DuplicateItems {
   final List<int> fileIDs;
   final int size;
-  Duplicates(this.fileIDs, this.size);
+  DuplicateItems(this.fileIDs, this.size);
 
-  factory Duplicates.fromMap(Map<String, dynamic> map) {
-    return Duplicates(
+  factory DuplicateItems.fromMap(Map<String, dynamic> map) {
+    return DuplicateItems(
       List<int>.from(map['fileIDs']),
       map['size'],
     );
   }
 
-  factory Duplicates.fromJson(String source) =>
-      Duplicates.fromMap(json.decode(source));
+  factory DuplicateItems.fromJson(String source) =>
+      DuplicateItems.fromMap(json.decode(source));
 
   @override
   String toString() => 'Duplicates(fileIDs: $fileIDs, size: $size)';
 }
+
+class DuplicateFiles {
+  final List<File> files;
+  final int size;
+
+  DuplicateFiles(this.files, this.size);
+
+  @override
+  String toString() => 'DuplicateFiles(files: $files, size: $size)';
+}

lib/services/sync_service.dart

@@ -17,6 +17,7 @@ import 'package:photos/events/sync_status_update_event.dart';
 import 'package:photos/events/trigger_logout_event.dart';
 import 'package:photos/models/backup_status.dart';
 import 'package:photos/models/duplicate_files.dart';
+import 'package:photos/models/file.dart';
 import 'package:photos/models/file_type.dart';
 import 'package:photos/services/local_sync_service.dart';
 import 'package:photos/services/notification_service.dart';
@@ -184,7 +185,7 @@ class SyncService {
     );
   }
 
-  Future<DuplicateFiles> getDuplicateFiles() async {
+  Future<List<DuplicateFiles>> getDuplicateFiles() async {
     try {
       final response = await _dio.get(
         Configuration.instance.getHttpEndpoint() + "/files/duplicates",
@@ -194,7 +195,21 @@ class SyncService {
           },
         ),
       );
-      return DuplicateFiles.fromMap(response.data);
+      final dupes = DuplicateFilesResponse.fromMap(response.data);
+      final ids = <int>[];
+      for (final dupe in dupes.duplicates) {
+        ids.addAll(dupe.fileIDs);
+      }
+      final fileMap = await FilesDB.instance.getFilesFromIDs(ids);
+      final result = <DuplicateFiles>[];
+      for (final dupe in dupes.duplicates) {
+        final files = <File>[];
+        for (final id in dupe.fileIDs) {
+          files.add(fileMap[id]);
+        }
+        result.add(DuplicateFiles(files, dupe.size));
+      }
+      return result;
     } catch (e) {
       _logger.severe(e);
       rethrow;