From 9bc03102059890e22e2f25f3d832a0823f106e8e Mon Sep 17 00:00:00 2001
From: andrei <a@b.com>
Date: Thu, 4 Nov 2021 11:25:42 -0400
Subject: [PATCH] new list based on template

---
 lib/add_form.dart  | 23 +++++++++++++----------
 lib/db_helper.dart | 23 +++++++++++++++++++++++
 2 files changed, 36 insertions(+), 10 deletions(-)

diff --git a/lib/add_form.dart b/lib/add_form.dart
index fe98f84..eeaaeb7 100644
--- a/lib/add_form.dart
+++ b/lib/add_form.dart
@@ -84,11 +84,9 @@ class _AddFormState extends State<AddForm> {
               DropdownButtonFormField<int>(
                 focusNode: _TemplateFocusNode,
                 value: _templatChoice,
-                onChanged: (value) {
-                  setState() {
-                    _templatChoice = (value != null) ? value : -1;
-                  }
-                },
+                onChanged: (value) => setState(() {
+                  _templatChoice = value!;
+                }),
                 decoration:
                     const InputDecoration(labelText: "Starting Template"),
                 items: generateDropdown(),
@@ -101,11 +99,16 @@ class _AddFormState extends State<AddForm> {
         child: Icon(Icons.save_alt),
         onPressed: () async {
           if (_formKey.currentState!.validate()) {
-            DBHelper.dbHelper.insertList(data.List(
-              _listLabel,
-              isTemplate: type.index == 1,
-            ));
-            // TODO implement template starting point
+            int id = await DBHelper.dbHelper.insertList(
+              data.List(
+                _listLabel,
+                isTemplate: type.index == 1,
+                // TODO Add description to lists
+              ),
+            );
+            if (_templatChoice >= 0 && _templatChoice < templates.length) {
+              DBHelper.dbHelper.copyList(templates[_templatChoice].id!, id);
+            }
             Navigator.pop(context); // TODO replace route with checklist page
           }
         },
diff --git a/lib/db_helper.dart b/lib/db_helper.dart
index 16edee7..e53cf57 100644
--- a/lib/db_helper.dart
+++ b/lib/db_helper.dart
@@ -80,9 +80,32 @@ class DBHelper {
   Future<int> deleteList(data.List l) async {
     Database db = await database;
 
+    db.delete("Item", where: 'list_id = ?', whereArgs: [l.id]);
     return db.delete("List", where: 'id = ?', whereArgs: [l.id]);
   }
 
+  Future<void> copyList(int oldID, int newID) async {
+    Database db = await database;
+    print('$newID, $oldID');
+
+    var batch = db.batch();
+    db.execute("""
+      CREATE TEMPORARY TABLE list_copy AS
+        SELECT check_text, status, list_id
+        FROM Item
+        WHERE list_id = ?
+    """, [oldID]);
+    db.update("list_copy", {'list_id': newID});
+    db.rawInsert("""
+      INSERT INTO Item(check_text, status, list_id)
+      SELECT * FROM list_copy
+    """);
+    db.execute("""
+      DROP TABLE list_copy
+    """);
+    batch.commit();
+  }
+
   Future<int> insertItem(data.Check item) async {
     Database db = await database;