From d0a8f6691027f179d6d76f089d43b47d40b45c93 Mon Sep 17 00:00:00 2001
From: Kamil Kusy <kamil.kusy111@gmail.com>
Date: Sat, 16 Aug 2025 19:00:53 +0200
Subject: [PATCH] feat(form-core): add new methods to FieldGroupApi

---
 packages/form-core/src/FieldGroupApi.ts | 31 +++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/packages/form-core/src/FieldGroupApi.ts b/packages/form-core/src/FieldGroupApi.ts
index 32dcfe7a0..69fda71da 100644
--- a/packages/form-core/src/FieldGroupApi.ts
+++ b/packages/form-core/src/FieldGroupApi.ts
@@ -178,6 +178,7 @@ export class FieldGroupApi<
   store: Derived<FieldGroupState<TFieldGroupData>>
 
   get state() {
+    // this.store.values e.g {phone: '', fullName: ''}
     return this.store.state
   }
 
@@ -347,6 +348,17 @@ export class FieldGroupApi<
     return this.form.deleteField(this.getFormFieldName(field))
   }
 
+  /**
+   * Delete all fields and their subfields.
+   */
+  deleteAllFields = () => {
+    const fieldGroupKeys = Object.keys(this.state.values || {})
+
+    fieldGroupKeys.forEach((key) => {
+      this.deleteField(key)
+    })
+  }
+
   /**
    * Pushes a value into an array field.
    */
@@ -409,6 +421,14 @@ export class FieldGroupApi<
     )
   }
 
+  replaceAllFields = (newValues: TFieldGroupData) => {
+    this.deleteAllFields()
+
+    Object.entries(newValues || {}).forEach(([field, value]) => {
+      this.setFieldValue(field, value as never)
+    })
+  }
+
   /**
    * Removes a value from an array field at the specified index.
    */
@@ -470,6 +490,17 @@ export class FieldGroupApi<
     return this.form.resetField(this.getFormFieldName(field))
   }
 
+  /**
+   * Resets all fields values and meta to default state
+   */
+  resetAllFields = () => {
+    const fieldGroupKeys = Object.keys(this.state.values || {})
+
+    fieldGroupKeys.forEach((key) => {
+      this.resetField(key)
+    })
+  }
+
   validateAllFields = (cause: ValidationCause) =>
     this.form.validateAllFields(cause)
 }