From 10675436e2d6d44252b4866895689a2ba228ad6d Mon Sep 17 00:00:00 2001
From: Shana Azria <sazria@apple.com>
Date: Thu, 6 May 2021 16:13:10 +0200
Subject: [PATCH] RemoveAllFabrics logic + UI support in iOS chiptool

---
 .../operational-credentials-server.cpp        |  9 ++++
 .../Fabric/FabricUIViewController.m           | 47 +++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp b/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
index 5bca1d6626355c..b9c35cb4225eaf 100644
--- a/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
+++ b/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
@@ -273,3 +273,12 @@ bool emberAfOperationalCredentialsClusterUpdateFabricLabelCallback(chip::app::Co
     emberAfSendImmediateDefaultResponse(status);
     return true;
 }
+
+// Up for discussion in Multi-Admin TT: chip-spec:#2891
+bool emberAfOperationalCredentialsClusterRemoveAllFabricsCallback(chip::app::Command * commandObj)
+{
+    emberAfPrintln(EMBER_AF_PRINT_DEBUG, "OpCreds: Remove all Fabrics");
+    emberAfSendImmediateDefaultResponse(EMBER_ZCL_STATUS_SUCCESS);
+    OpenDefaultPairingWindow(ResetAdmins::kYes);
+    return true;
+}
diff --git a/src/darwin/CHIPTool/CHIPTool/View Controllers/Fabric/FabricUIViewController.m b/src/darwin/CHIPTool/CHIPTool/View Controllers/Fabric/FabricUIViewController.m
index e91a0eaed1730f..ec4e80d870c7cf 100644
--- a/src/darwin/CHIPTool/CHIPTool/View Controllers/Fabric/FabricUIViewController.m	
+++ b/src/darwin/CHIPTool/CHIPTool/View Controllers/Fabric/FabricUIViewController.m	
@@ -111,6 +111,24 @@ - (void)setupUIElements
 
     removeFabricView.translatesAutoresizingMaskIntoConstraints = false;
     [removeFabricView.trailingAnchor constraintEqualToAnchor:_stackView.trailingAnchor].active = YES;
+    
+    // Remove All Fabrics
+
+    UIButton * removeAllFabricsButton = [UIButton new];
+    removeAllFabricsButton.titleLabel.font = [UIFont systemFontOfSize:17];
+    removeAllFabricsButton.titleLabel.textColor = [UIColor blackColor];
+    removeAllFabricsButton.layer.cornerRadius = 5;
+    removeAllFabricsButton.clipsToBounds = YES;
+    removeAllFabricsButton.backgroundColor = UIColor.systemBlueColor;
+    [removeAllFabricsButton setTitle:@"Remove All Fabrics" forState:UIControlStateNormal];
+    [removeAllFabricsButton addTarget:self
+                             action:@selector(removeAllFabricsButtonPressed:)
+                   forControlEvents:UIControlEventTouchUpInside];
+    [_stackView addArrangedSubview:removeAllFabricsButton];
+
+    removeAllFabricsButton.translatesAutoresizingMaskIntoConstraints = false;
+    [removeAllFabricsButton.trailingAnchor constraintEqualToAnchor:_stackView.trailingAnchor].active = YES;
+    [removeAllFabricsButton.leadingAnchor constraintEqualToAnchor:_stackView.leadingAnchor].active = YES;
 
     // Get Fabrics List
 
@@ -223,6 +241,35 @@ - (void)fetchFabricsList
 
 // MARK: UIButton methods
 
+- (IBAction)removeAllFabricsButtonPressed:(id)sender
+{
+    NSLog(@"Request to Remove All Fabrics.");
+    UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Remove All Fabrics?"
+                                   message:@"Are you sure you want to remove all fabrics, this will remove all fabrics on accessory, including this one, and put the device back in commissioning."
+                                   preferredStyle:UIAlertControllerStyleAlert];
+
+    UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"Remove" style:UIAlertActionStyleDefault
+       handler:^(UIAlertAction * action) {
+        [self.cluster removeAllFabrics:^(NSError * error, NSDictionary * values) {
+            BOOL errorOccured = (error != nil);
+            NSString * resultString = errorOccured ? [NSString stringWithFormat:@"An error occured: 0x%02lx", error.code]
+                                                     : @"Remove all fabrics success";
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [self updateResult:resultString isError:errorOccured];
+            });
+        }];
+    }];
+    
+    UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel
+       handler:^(UIAlertAction * action) {}];
+    
+    [alert addAction:cancelAction];
+    [alert addAction:defaultAction];
+    
+    [self presentViewController:alert animated:YES completion:nil];
+}
+
+
 - (IBAction)updateFabricLabelButtonPressed:(id)sender
 {
     NSString * label = _updateFabricLabelTextField.text;