From 5e24a8571d74a5300922b12706f3e50088532e16 Mon Sep 17 00:00:00 2001
From: Michele Balistreri <michele@bitgamma.com>
Date: Mon, 25 Oct 2021 08:41:53 +0300
Subject: [PATCH] implement delete flow

---
 flow.go          | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 flow_commands.go | 20 ++++++++++++++++++++
 2 files changed, 64 insertions(+), 2 deletions(-)

diff --git a/flow.go b/flow.go
index bc2e357..1ec469d 100644
--- a/flow.go
+++ b/flow.go
@@ -382,9 +382,51 @@ func (f *KeycardFlow) unpairThisFlow(kc *keycardContext) (FlowStatus, error) {
 }
 
 func (f *KeycardFlow) unpairOthersFlow(kc *keycardContext) (FlowStatus, error) {
-	return nil, errors.New("not implemented yet")
+	err := f.openSCAndAuthenticate(kc, true)
+
+	if err != nil {
+		return nil, err
+	}
+
+	for i := 0; i < maxFreeSlots; i++ {
+		if i == kc.cmdSet.PairingInfo.Index {
+			continue
+		}
+
+		err = f.unpair(kc, i)
+
+		if err != nil {
+			return nil, err
+		}
+
+		f.cardInfo.freeSlots++
+	}
+
+	return FlowStatus{InstanceUID: f.cardInfo.instanceUID, FreeSlots: f.cardInfo.freeSlots}, nil
 }
 
 func (f *KeycardFlow) deleteUnpairFlow(kc *keycardContext) (FlowStatus, error) {
-	return nil, errors.New("not implemented yet")
+	err := f.openSCAndAuthenticate(kc, true)
+
+	if err != nil {
+		return nil, err
+	}
+
+	err = f.removeKey(kc)
+
+	if err != nil {
+		return nil, err
+	}
+
+	f.cardInfo.keyUID = ""
+
+	err = f.unpairCurrent(kc)
+
+	if err != nil {
+		return nil, err
+	}
+
+	f.cardInfo.freeSlots++
+
+	return FlowStatus{InstanceUID: f.cardInfo.instanceUID, KeyUID: f.cardInfo.keyUID, FreeSlots: f.cardInfo.freeSlots}, nil
 }
diff --git a/flow_commands.go b/flow_commands.go
index 4e42854..c7233ec 100644
--- a/flow_commands.go
+++ b/flow_commands.go
@@ -250,6 +250,26 @@ func (f *KeycardFlow) unpairCurrent(kc *keycardContext) error {
 	return err
 }
 
+func (f *KeycardFlow) unpair(kc *keycardContext, idx int) error {
+	err := kc.unpair(uint8(idx))
+
+	if isSCardError(err) {
+		return restartErr()
+	}
+
+	return err
+}
+
+func (f *KeycardFlow) removeKey(kc *keycardContext) error {
+	err := kc.removeKey()
+
+	if isSCardError(err) {
+		return restartErr()
+	}
+
+	return err
+}
+
 func (f *KeycardFlow) exportKey(kc *keycardContext, path string, onlyPublic bool) (*KeyPair, error) {
 	keyPair, err := kc.exportKey(true, false, onlyPublic, path)