peer expiry feature: database model, frontend updates

internal/wireguard/peermanager.go

@@ -108,11 +108,15 @@ type Peer struct {
 	// Global Device Settings (can be ignored, only make sense if device is in server mode)
 	Mtu int `form:"mtu" binding:"gte=0,lte=1500"`
 
-	DeactivatedAt *time.Time `json:",omitempty"`
-	CreatedBy     string
-	UpdatedBy     string
-	CreatedAt     time.Time
-	UpdatedAt     time.Time
+	DeactivatedAt     *time.Time `json:",omitempty"`
+	DeactivatedReason string     `json:",omitempty"`
+
+	ExpiresAt *time.Time `json:",omitempty" form:"expires_at" binding:"omitempty" time_format:"2006-01-02"`
+
+	CreatedBy string
+	UpdatedBy string
+	CreatedAt time.Time
+	UpdatedAt time.Time
 }
 
 func (p *Peer) SetIPAddresses(addresses ...string) {
@@ -238,6 +242,19 @@ func (p Peer) IsValid() bool {
 	return true
 }
 
+func (p Peer) WillExpire() bool {
+	if p.ExpiresAt == nil {
+		return false
+	}
+	if p.DeactivatedAt != nil {
+		return false // already deactivated...
+	}
+	if p.ExpiresAt.After(time.Now()) {
+		return true
+	}
+	return false
+}
+
 func (p Peer) GetConfigFileName() string {
 	reg := regexp.MustCompile("[^a-zA-Z0-9_-]+")
 	return reg.ReplaceAllString(strings.ReplaceAll(p.Identifier, " ", "-"), "") + ".conf"