From af8b08c1203ad22f1867760c508faf3ab0aa0c04 Mon Sep 17 00:00:00 2001
From: marcoabat <marco.skupin@abatplus.de>
Date: Sun, 6 Aug 2023 22:33:11 +0200
Subject: [PATCH] mass deletion of items

---
 lib/pages/detail_checklist_page.dart | 18 ++++++++++++------
 lib/services/dbhelper.dart           |  4 ++++
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/lib/pages/detail_checklist_page.dart b/lib/pages/detail_checklist_page.dart
index 5fff463..8c45471 100644
--- a/lib/pages/detail_checklist_page.dart
+++ b/lib/pages/detail_checklist_page.dart
@@ -23,7 +23,7 @@ class _DetailChecklistPageState extends State<DetailChecklistPage> {
   List<Item> _items = [];
   int? _selectedItemId;
   String? pageTitle;
-  List<int> selectedItems = [];
+  List<int> selectedItemIndexes = [];
 
   @override
   void dispose() {
@@ -137,7 +137,7 @@ class _DetailChecklistPageState extends State<DetailChecklistPage> {
       appBar: AppBar(
         title: Text(pageTitle ?? ''),
         actions: [
-          if (selectedItems.isNotEmpty)
+          if (selectedItemIndexes.isNotEmpty)
             IconButton(
                 onPressed: _onDeleteItemsPressed,
                 icon: const Icon(Icons.delete))
@@ -161,7 +161,7 @@ class _DetailChecklistPageState extends State<DetailChecklistPage> {
       onTap: () => _itemTapped(index),
       itemSelectionChanged: (isSelected) =>
           _itemSelectionChanged(isSelected, index),
-      selectionMode: selectedItems.isNotEmpty,
+      selectionMode: selectedItemIndexes.isNotEmpty,
     );
   }
 
@@ -175,14 +175,20 @@ class _DetailChecklistPageState extends State<DetailChecklistPage> {
   void _itemSelectionChanged(bool isSelected, int index) {
     if (isSelected) {
       setState(() {
-        selectedItems.add(index);
+        selectedItemIndexes.add(index);
       });
     } else {
       setState(() {
-        selectedItems.remove(index);
+        selectedItemIndexes.remove(index);
       });
     }
   }
 
-  void _onDeleteItemsPressed() {}
+  void _onDeleteItemsPressed() {
+    List<int> itemIds = [];
+    for (final itemIndex in selectedItemIndexes) {
+      itemIds.add(_items.elementAt(itemIndex).id!);
+    }
+    DbHelper.deleteItemsById(itemIds);
+  }
 }
diff --git a/lib/services/dbhelper.dart b/lib/services/dbhelper.dart
index 3eb718a..2d85c79 100644
--- a/lib/services/dbhelper.dart
+++ b/lib/services/dbhelper.dart
@@ -144,6 +144,10 @@ class DbHelper {
     await _client.from(itemsTableName).delete().eq('id', id);
   }
 
+  static Future<void> deleteItemsById(List<int> ids) async {
+    await _client.from(itemsTableName).delete().in_('id', ids);
+  }
+
   static Stream<AuthState> get authChangeEventStream =>
       _client.auth.onAuthStateChange;
 }