switch to toast instead of alert messages, implement serverIDs and restart tracking for every remote-server

internal/config/settings.go

@@ -77,6 +77,7 @@ const (
 	jailDFile                 = "/etc/fail2ban/jail.d/ui-custom-action.conf"
 	actionFile                = "/etc/fail2ban/action.d/ui-custom-action.conf"
 	actionCallbackPlaceholder = "__CALLBACK_URL__"
+	actionServerIDPlaceholder = "__SERVER_ID__"
 )
 
 const fail2banActionTemplate = `[INCLUDES]
@@ -95,13 +96,14 @@ norestored = 1
 
 actionban = /usr/bin/curl -X POST __CALLBACK_URL__/api/ban \
      -H "Content-Type: application/json" \
-     -d "$(jq -n --arg ip '<ip>' \
+     -d "$(jq -n --arg serverId '__SERVER_ID__' \
+                 --arg ip '<ip>' \
                  --arg jail '<name>' \
                  --arg hostname '<fq-hostname>' \
                  --arg failures '<failures>' \
                  --arg whois "$(whois <ip> || echo 'missing whois program')" \
                  --arg logs "$(tac <logpath> | grep <grepopts> -wF <ip>)" \
-                 '{ip: $ip, jail: $jail, hostname: $hostname, failures: $failures, whois: $whois, logs: $logs}')"
+                 '{serverId: $serverId, ip: $ip, jail: $jail, hostname: $hostname, failures: $failures, whois: $whois, logs: $logs}')"
 
 [Init]
 
@@ -143,6 +145,7 @@ type Fail2banServer struct {
 	Tags          []string  `json:"tags,omitempty"`
 	IsDefault     bool      `json:"isDefault"`
 	Enabled       bool      `json:"enabled"`
+	RestartNeeded bool      `json:"restartNeeded"`
 	CreatedAt     time.Time `json:"createdAt"`
 	UpdatedAt     time.Time `json:"updatedAt"`
 
@@ -323,6 +326,7 @@ func applyServerRecordsLocked(records []storage.ServerRecord) {
 			Tags:          tags,
 			IsDefault:     rec.IsDefault,
 			Enabled:       rec.Enabled,
+			RestartNeeded: rec.NeedsRestart,
 			CreatedAt:     rec.CreatedAt,
 			UpdatedAt:     rec.UpdatedAt,
 			enabledSet:    true,
@@ -399,6 +403,7 @@ func toServerRecordsLocked() ([]storage.ServerRecord, error) {
 			TagsJSON:     string(tagBytes),
 			IsDefault:    srv.IsDefault,
 			Enabled:      srv.Enabled,
+			NeedsRestart: srv.RestartNeeded,
 			CreatedAt:    createdAt,
 			UpdatedAt:    updatedAt,
 		})
@@ -563,6 +568,9 @@ func normalizeServersLocked() {
 			}
 		}
 		server.enabledSet = true
+		if !server.Enabled {
+			server.RestartNeeded = false
+		}
 		if server.IsDefault && !server.Enabled {
 			server.IsDefault = false
 		}
@@ -584,6 +592,8 @@ func normalizeServersLocked() {
 	sort.SliceStable(currentSettings.Servers, func(i, j int) bool {
 		return currentSettings.Servers[i].CreatedAt.Before(currentSettings.Servers[j].CreatedAt)
 	})
+
+	updateGlobalRestartFlagLocked()
 }
 
 func generateServerID() string {
@@ -595,7 +605,7 @@ func generateServerID() string {
 }
 
 // ensureFail2banActionFiles writes the local action files if Fail2ban is present.
-func ensureFail2banActionFiles(callbackURL string) error {
+func ensureFail2banActionFiles(callbackURL, serverID string) error {
 	DebugLog("----------------------------")
 	DebugLog("ensureFail2banActionFiles called (settings.go)")
 
@@ -609,7 +619,7 @@ func ensureFail2banActionFiles(callbackURL string) error {
 	if err := ensureJailDConfig(); err != nil {
 		return err
 	}
-	return writeFail2banAction(callbackURL)
+	return writeFail2banAction(callbackURL, serverID)
 }
 
 // setupGeoCustomAction checks and replaces the default action in jail.local with our from fail2ban-UI
@@ -725,14 +735,14 @@ action_mwlg = %(action_)s
 }
 
 // writeFail2banAction creates or updates the action file with the AlertCountries.
-func writeFail2banAction(callbackURL string) error {
+func writeFail2banAction(callbackURL, serverID string) error {
 	DebugLog("Running initial writeFail2banAction()") // entry point
 	DebugLog("----------------------------")
 	if err := os.MkdirAll(filepath.Dir(actionFile), 0o755); err != nil {
 		return fmt.Errorf("failed to ensure action.d directory: %w", err)
 	}
 
-	actionConfig := BuildFail2banActionConfig(callbackURL)
+	actionConfig := BuildFail2banActionConfig(callbackURL, serverID)
 	err := os.WriteFile(actionFile, []byte(actionConfig), 0644)
 	if err != nil {
 		return fmt.Errorf("failed to write action file: %w", err)
@@ -751,12 +761,16 @@ func cloneServer(src Fail2banServer) Fail2banServer {
 	return dst
 }
 
-func BuildFail2banActionConfig(callbackURL string) string {
+func BuildFail2banActionConfig(callbackURL, serverID string) string {
 	trimmed := strings.TrimRight(strings.TrimSpace(callbackURL), "/")
 	if trimmed == "" {
 		trimmed = "http://127.0.0.1:8080"
 	}
-	return strings.ReplaceAll(fail2banActionTemplate, actionCallbackPlaceholder, trimmed)
+	if serverID == "" {
+		serverID = "local"
+	}
+	config := strings.ReplaceAll(fail2banActionTemplate, actionCallbackPlaceholder, trimmed)
+	return strings.ReplaceAll(config, actionServerIDPlaceholder, serverID)
 }
 
 func getCallbackURLLocked() string {
@@ -786,7 +800,7 @@ func EnsureLocalFail2banAction(server Fail2banServer) error {
 	settingsLock.RLock()
 	callbackURL := getCallbackURLLocked()
 	settingsLock.RUnlock()
-	return ensureFail2banActionFiles(callbackURL)
+	return ensureFail2banActionFiles(callbackURL, server.ID)
 }
 
 func serverByIDLocked(id string) (Fail2banServer, bool) {
@@ -934,6 +948,35 @@ func clearDefaultLocked() {
 	}
 }
 
+func setServerRestartFlagLocked(serverID string, value bool) bool {
+	for idx := range currentSettings.Servers {
+		if currentSettings.Servers[idx].ID == serverID {
+			currentSettings.Servers[idx].RestartNeeded = value
+			return true
+		}
+	}
+	return false
+}
+
+func anyServerNeedsRestartLocked() bool {
+	for _, srv := range currentSettings.Servers {
+		if srv.RestartNeeded {
+			return true
+		}
+	}
+	return false
+}
+
+func updateGlobalRestartFlagLocked() {
+	currentSettings.RestartNeeded = anyServerNeedsRestartLocked()
+}
+
+func markAllServersRestartLocked() {
+	for idx := range currentSettings.Servers {
+		currentSettings.Servers[idx].RestartNeeded = true
+	}
+}
+
 // DeleteServer removes a server by ID.
 func DeleteServer(id string) error {
 	settingsLock.Lock()
@@ -998,21 +1041,43 @@ func GetSettings() AppSettings {
 	return currentSettings
 }
 
-// MarkRestartNeeded sets restartNeeded = true and saves JSON
+// MarkRestartNeeded marks the specified server as requiring a restart.
-func MarkRestartNeeded() error {
+func MarkRestartNeeded(serverID string) error {
 	settingsLock.Lock()
 	defer settingsLock.Unlock()
 
-	currentSettings.RestartNeeded = true
+	if serverID == "" {
+		return fmt.Errorf("server id must be provided")
+	}
+
+	if !setServerRestartFlagLocked(serverID, true) {
+		return fmt.Errorf("server %s not found", serverID)
+	}
+
+	updateGlobalRestartFlagLocked()
+	if err := persistServersLocked(); err != nil {
+		return err
+	}
 	return persistAppSettingsLocked()
 }
 
-// MarkRestartDone sets restartNeeded = false and saves JSON
+// MarkRestartDone marks the specified server as no longer requiring a restart.
-func MarkRestartDone() error {
+func MarkRestartDone(serverID string) error {
 	settingsLock.Lock()
 	defer settingsLock.Unlock()
 
-	currentSettings.RestartNeeded = false
+	if serverID == "" {
+		return fmt.Errorf("server id must be provided")
+	}
+
+	if !setServerRestartFlagLocked(serverID, false) {
+		return fmt.Errorf("server %s not found", serverID)
+	}
+
+	updateGlobalRestartFlagLocked()
+	if err := persistServersLocked(); err != nil {
+		return err
+	}
 	return persistAppSettingsLocked()
 }
 
@@ -1026,16 +1091,15 @@ func UpdateSettings(new AppSettings) (AppSettings, error) {
 	old := currentSettings
 
 	// If certain fields change, we mark reload needed
-	if old.BantimeIncrement != new.BantimeIncrement ||
+	restartTriggered := old.BantimeIncrement != new.BantimeIncrement ||
 		old.IgnoreIP != new.IgnoreIP ||
 		old.Bantime != new.Bantime ||
 		old.Findtime != new.Findtime ||
-		//old.Maxretry != new.Maxretry ||
+		old.Maxretry != new.Maxretry
-		old.Maxretry != new.Maxretry {
+	if restartTriggered {
 		new.RestartNeeded = true
 	} else {
-		// preserve previous RestartNeeded if it was already true
+		new.RestartNeeded = anyServerNeedsRestartLocked()
-		new.RestartNeeded = new.RestartNeeded || old.RestartNeeded
 	}
 
 	new.CallbackURL = strings.TrimSpace(new.CallbackURL)
@@ -1047,6 +1111,10 @@ func UpdateSettings(new AppSettings) (AppSettings, error) {
 	}
 	currentSettings = new
 	setDefaultsLocked()
+	if currentSettings.RestartNeeded && restartTriggered {
+		markAllServersRestartLocked()
+		updateGlobalRestartFlagLocked()
+	}
 	DebugLog("New settings applied: %v", currentSettings) // Log settings applied
 
 	if err := persistAllLocked(); err != nil {

internal/fail2ban/client.go

@@ -80,9 +80,18 @@ func ReloadFail2ban() error {
 	return conn.Reload(context.Background())
 }
 
-// RestartFail2ban restarts the Fail2ban service using the default connector.
+// RestartFail2ban restarts the Fail2ban service using the provided server or default connector.
-func RestartFail2ban() error {
+func RestartFail2ban(serverID string) error {
-	conn, err := GetManager().DefaultConnector()
+	manager := GetManager()
+	var (
+		conn Connector
+		err  error
+	)
+	if serverID != "" {
+		conn, err = manager.Connector(serverID)
+	} else {
+		conn, err = manager.DefaultConnector()
+	}
 	if err != nil {
 		return err
 	}

internal/fail2ban/connector_agent.go

@@ -63,7 +63,7 @@ func (ac *AgentConnector) Server() config.Fail2banServer {
 func (ac *AgentConnector) ensureAction(ctx context.Context) error {
 	payload := map[string]any{
 		"name":        "ui-custom-action",
-		"config":      config.BuildFail2banActionConfig(config.GetCallbackURL()),
+		"config":      config.BuildFail2banActionConfig(config.GetCallbackURL(), ac.server.ID),
 		"callbackUrl": config.GetCallbackURL(),
 		"setDefault":  true,
 	}

internal/fail2ban/connector_ssh.go

@@ -199,7 +199,7 @@ func (sc *SSHConnector) FetchBanEvents(ctx context.Context, limit int) ([]BanEve
 
 func (sc *SSHConnector) ensureAction(ctx context.Context) error {
 	callbackURL := config.GetCallbackURL()
-	actionConfig := config.BuildFail2banActionConfig(callbackURL)
+	actionConfig := config.BuildFail2banActionConfig(callbackURL, sc.server.ID)
 	payload := base64.StdEncoding.EncodeToString([]byte(actionConfig))
 	script := strings.ReplaceAll(sshEnsureActionScript, "__PAYLOAD__", payload)
 	// Base64 encode the entire script to avoid shell escaping issues

internal/storage/storage.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 	"sync"
 	"time"
 
@@ -82,6 +83,7 @@ type ServerRecord struct {
 	TagsJSON     string
 	IsDefault    bool
 	Enabled      bool
+	NeedsRestart bool
 	CreatedAt    time.Time
 	UpdatedAt    time.Time
 }
@@ -242,7 +244,7 @@ func ListServers(ctx context.Context) ([]ServerRecord, error) {
 	}
 
 	rows, err := db.QueryContext(ctx, `
-SELECT id, name, type, host, port, socket_path, log_path, ssh_user, ssh_key_path, agent_url, agent_secret, hostname, tags, is_default, enabled, created_at, updated_at
+SELECT id, name, type, host, port, socket_path, log_path, ssh_user, ssh_key_path, agent_url, agent_secret, hostname, tags, is_default, enabled, needs_restart, created_at, updated_at
 FROM servers
 ORDER BY created_at`)
 	if err != nil {
@@ -257,7 +259,7 @@ ORDER BY created_at`)
 		var name, serverType sql.NullString
 		var created, updated sql.NullString
 		var port sql.NullInt64
-		var isDefault, enabled sql.NullInt64
+		var isDefault, enabled, needsRestart sql.NullInt64
 
 		if err := rows.Scan(
 			&rec.ID,
@@ -275,6 +277,7 @@ ORDER BY created_at`)
 			&tags,
 			&isDefault,
 			&enabled,
+			&needsRestart,
 			&created,
 			&updated,
 		); err != nil {
@@ -295,6 +298,7 @@ ORDER BY created_at`)
 		rec.TagsJSON = stringFromNull(tags)
 		rec.IsDefault = intToBool(intFromNull(isDefault))
 		rec.Enabled = intToBool(intFromNull(enabled))
+		rec.NeedsRestart = intToBool(intFromNull(needsRestart))
 
 		if created.Valid {
 			if t, err := time.Parse(time.RFC3339Nano, created.String); err == nil {
@@ -334,9 +338,9 @@ func ReplaceServers(ctx context.Context, servers []ServerRecord) error {
 
 	stmt, err := tx.PrepareContext(ctx, `
 INSERT INTO servers (
-	id, name, type, host, port, socket_path, log_path, ssh_user, ssh_key_path, agent_url, agent_secret, hostname, tags, is_default, enabled, created_at, updated_at
+	id, name, type, host, port, socket_path, log_path, ssh_user, ssh_key_path, agent_url, agent_secret, hostname, tags, is_default, enabled, needs_restart, created_at, updated_at
 ) VALUES (
-	?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
+	?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
 )`)
 	if err != nil {
 		return err
@@ -368,6 +372,7 @@ INSERT INTO servers (
 			srv.TagsJSON,
 			boolToInt(srv.IsDefault),
 			boolToInt(srv.Enabled),
+			boolToInt(srv.NeedsRestart),
 			createdAt.Format(time.RFC3339Nano),
 			updatedAt.Format(time.RFC3339Nano),
 		); err != nil {
@@ -568,6 +573,7 @@ CREATE TABLE IF NOT EXISTS servers (
 	tags TEXT,
 	is_default INTEGER,
 	enabled INTEGER,
+	needs_restart INTEGER DEFAULT 0,
 	created_at TEXT,
 	updated_at TEXT
 );
@@ -591,10 +597,20 @@ CREATE INDEX IF NOT EXISTS idx_ban_events_server_id ON ban_events(server_id);
 CREATE INDEX IF NOT EXISTS idx_ban_events_occurred_at ON ban_events(occurred_at);
 `
 
-	_, err := db.ExecContext(ctx, createTable)
+	if _, err := db.ExecContext(ctx, createTable); err != nil {
 		return err
 	}
 
+	// Backfill needs_restart column for existing databases that predate it.
+	if _, err := db.ExecContext(ctx, `ALTER TABLE servers ADD COLUMN needs_restart INTEGER DEFAULT 0`); err != nil {
+		if !strings.Contains(strings.ToLower(err.Error()), "duplicate column name") {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func ensureDirectory(path string) error {
 	if path == ":memory:" {
 		return nil

pkg/web/handlers.go

@@ -516,7 +516,12 @@ func GetJailFilterConfigHandler(c *gin.Context) {
 	config.DebugLog("----------------------------")
 	config.DebugLog("GetJailFilterConfigHandler called (handlers.go)") // entry point
 	jail := c.Param("jail")
-	cfg, err := fail2ban.GetFilterConfig(jail)
+	conn, err := resolveConnector(c)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	cfg, err := conn.GetFilterConfig(c.Request.Context(), jail)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
@@ -532,6 +537,11 @@ func SetJailFilterConfigHandler(c *gin.Context) {
 	config.DebugLog("----------------------------")
 	config.DebugLog("SetJailFilterConfigHandler called (handlers.go)") // entry point
 	jail := c.Param("jail")
+	conn, err := resolveConnector(c)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
 
 	// Parse JSON body (containing the new filter content)
 	var req struct {
@@ -542,25 +552,17 @@ func SetJailFilterConfigHandler(c *gin.Context) {
 		return
 	}
 
-	// Write the filter config file to /etc/fail2ban/filter.d/<jail>.conf
+	if err := conn.SetFilterConfig(c.Request.Context(), jail, req.Config); err != nil {
-	if err := fail2ban.SetFilterConfig(jail, req.Config); err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
 
-	// Mark reload needed in our UI settings
+	if err := conn.Reload(c.Request.Context()); err != nil {
-	//	if err := config.MarkRestartNeeded(); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "filter saved but reload failed: " + err.Error()})
-	//		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
-	//		return
+	}
-	//	}
 
-	c.JSON(http.StatusOK, gin.H{"message": "jail config updated"})
+	c.JSON(http.StatusOK, gin.H{"message": "Filter updated and fail2ban reloaded"})
-
-	// Return a simple JSON response without forcing a blocking alert
-	//	c.JSON(http.StatusOK, gin.H{
-	//		"message":      "Filter updated, reload needed",
-	//		"restartNeeded": true,
-	//	})
 }
 
 // ManageJailsHandler returns a list of all jails (from jail.local and jail.d)
@@ -602,7 +604,7 @@ func UpdateJailManagementHandler(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update jail settings: " + err.Error()})
 		return
 	}
-	if err := config.MarkRestartNeeded(); err != nil {
+	if err := config.MarkRestartNeeded(conn.Server().ID); err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
@@ -739,17 +741,18 @@ func RestartFail2banHandler(c *gin.Context) {
 	config.DebugLog("----------------------------")
 	config.DebugLog("ApplyFail2banSettings called (handlers.go)") // entry point
 
-	// First we write our new settings to /etc/fail2ban/jail.local
+	conn, err := resolveConnector(c)
-	//	if err := fail2ban.ApplyFail2banSettings("/etc/fail2ban/jail.local"); err != nil {
+	if err != nil {
-	//		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
-	//		return
+		return
-	//	}
+	}
+	server := conn.Server()
 
 	// Attempt to restart the fail2ban service.
-	restartErr := fail2ban.RestartFail2ban()
+	restartErr := fail2ban.RestartFail2ban(server.ID)
 	if restartErr != nil {
 		// Check if running inside a container.
-		if _, container := os.LookupEnv("CONTAINER"); container {
+		if _, container := os.LookupEnv("CONTAINER"); container && server.Type == "local" {
 			// In a container, the restart command may fail (since fail2ban runs on the host).
 			// Log the error and continue, so we can mark the restart as done.
 			log.Printf("Warning: restart failed inside container (expected behavior): %v", restartErr)
@@ -761,7 +764,7 @@ func RestartFail2banHandler(c *gin.Context) {
 	}
 
 	// Only call MarkRestartDone if we either successfully restarted the service or we are in a container.
-	if err := config.MarkRestartDone(); err != nil {
+	if err := config.MarkRestartDone(server.ID); err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}

pkg/web/templates/index.html

@@ -136,6 +136,48 @@
       padding: 0.1em 0.2em;
       border-radius: 0.25em;
     }
+
+    /* Toast notifications */
+    #toast-container {
+      position: fixed;
+      top: 1.5rem;
+      right: 1.5rem;
+      display: flex;
+      flex-direction: column;
+      gap: 0.5rem;
+      z-index: 10000;
+      pointer-events: none;
+    }
+
+    .toast {
+      min-width: 240px;
+      max-width: 360px;
+      padding: 0.75rem 1rem;
+      border-radius: 0.5rem;
+      color: #fff;
+      font-weight: 500;
+      box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
+      opacity: 0;
+      transform: translateY(-6px);
+      transition: opacity 0.25s ease, transform 0.25s ease;
+    }
+
+    .toast.show {
+      opacity: 1;
+      transform: translateY(0);
+    }
+
+    .toast-success {
+      background-color: #047857;
+    }
+
+    .toast-error {
+      background-color: #b91c1c;
+    }
+
+    .toast-info {
+      background-color: #1d4ed8;
+    }
   </style>
 </head>
 
@@ -154,6 +196,8 @@
     </div>
   </div>
 
+  <div id="toast-container"></div>
+
   <!-- ******************************************************************* -->
   <!--                          Navigation START                           -->
   <!-- ******************************************************************* -->
@@ -821,7 +865,7 @@
         getTranslationsSettingsOnPageload()
       ])
         .then(function() {
-          checkRestartNeeded();
+          updateRestartBanner();
           return refreshData({ silent: true });
         })
         .catch(function(err) {
@@ -854,6 +898,25 @@
       }
     }
 
+    function showToast(message, type) {
+      var container = document.getElementById('toast-container');
+      if (!container || !message) return;
+      var toast = document.createElement('div');
+      var variant = type || 'info';
+      toast.className = 'toast toast-' + variant;
+      toast.textContent = message;
+      container.appendChild(toast);
+      requestAnimationFrame(function() {
+        toast.classList.add('show');
+      });
+      setTimeout(function() {
+        toast.classList.remove('show');
+        setTimeout(function() {
+          toast.remove();
+        }, 300);
+      }, 5000);
+    }
+
     // Fetch and display own external IP for webUI
     function displayExternalIP() {
       fetch('https://api.ipify.org?format=json')
@@ -905,18 +968,14 @@
       }
     }
 
-    // Check if there is still a reload of the fail2ban service needed
+    function updateRestartBanner() {
-    function checkRestartNeeded() {
+      var banner = document.getElementById('restartBanner');
-      fetch('/api/settings')
+      if (!banner) return;
-        .then(res => res.json())
+      if (currentServer && currentServer.restartNeeded) {
-        .then(data => {
+        banner.style.display = 'block';
-          if (data.restartNeeded) {
-            document.getElementById('restartBanner').style.display = 'block';
       } else {
-            document.getElementById('restartBanner').style.display = 'none';
+        banner.style.display = 'none';
       }
-        })
-        .catch(err => console.error('Error checking restartNeeded:', err));
     }
 
     // Load dynamically the other pages when navigating in nav
@@ -997,6 +1056,7 @@
           }
           renderServerSelector();
           renderServerSubtitle();
+          updateRestartBanner();
         })
         .catch(function(err) {
           console.error('Error loading servers:', err);
@@ -1005,6 +1065,7 @@
           currentServer = null;
           renderServerSelector();
           renderServerSubtitle();
+          updateRestartBanner();
         });
     }
 
@@ -1088,6 +1149,7 @@
       }
       renderServerSelector();
       renderServerSubtitle();
+      updateRestartBanner();
       refreshData();
     }
 
@@ -1643,10 +1705,10 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert('Error saving server: ' + data.error);
+            showToast('Error saving server: ' + (data.error || 'Unknown error'), 'error');
             return;
           }
-          alert(t('servers.form.success', 'Server saved successfully.'));
+          showToast(t('servers.form.success', 'Server saved successfully.'), 'success');
           var saved = data.server || {};
           currentServerId = saved.id || currentServerId;
           return loadServers().then(function() {
@@ -1660,7 +1722,7 @@
           });
         })
         .catch(function(err) {
-          alert('Error saving server: ' + err);
+          showToast('Error saving server: ' + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1733,7 +1795,7 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert('Error saving server: ' + data.error);
+            showToast('Error saving server: ' + (data.error || 'Unknown error'), 'error');
             return;
           }
           if (!enabled && currentServerId === serverId) {
@@ -1748,7 +1810,7 @@
           });
         })
         .catch(function(err) {
-          alert('Error saving server: ' + err);
+          showToast('Error saving server: ' + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1764,13 +1826,13 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert(t(data.messageKey || 'servers.actions.test_failure', data.error));
+            showToast(t(data.messageKey || 'servers.actions.test_failure', data.error), 'error');
             return;
           }
-          alert(t(data.messageKey || 'servers.actions.test_success', data.message || 'Connection successful'));
+          showToast(t(data.messageKey || 'servers.actions.test_success', data.message || 'Connection successful'), 'success');
         })
         .catch(function(err) {
-          alert(t('servers.actions.test_failure', 'Connection failed') + ': ' + err);
+          showToast(t('servers.actions.test_failure', 'Connection failed') + ': ' + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1784,7 +1846,7 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert('Error deleting server: ' + data.error);
+            showToast('Error deleting server: ' + (data.error || 'Unknown error'), 'error');
             return;
           }
           if (currentServerId === serverId) {
@@ -1796,10 +1858,12 @@
             renderServerSelector();
             renderServerSubtitle();
             return refreshData({ silent: true });
+          }).then(function() {
+            showToast(t('servers.actions.delete_success', 'Server removed'), 'success');
           });
         })
         .catch(function(err) {
-          alert('Error deleting server: ' + err);
+          showToast('Error deleting server: ' + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1812,7 +1876,7 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert('Error setting default server: ' + data.error);
+            showToast('Error setting default server: ' + (data.error || 'Unknown error'), 'error');
             return;
           }
           currentServerId = data.server ? data.server.id : serverId;
@@ -1821,10 +1885,12 @@
             renderServerSelector();
             renderServerSubtitle();
             return refreshData({ silent: true });
+          }).then(function() {
+            showToast(t('servers.actions.set_default_success', 'Server set as default'), 'success');
           });
         })
         .catch(function(err) {
-          alert('Error setting default server: ' + err);
+          showToast('Error setting default server: ' + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1910,14 +1976,14 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert("Error: " + data.error);
+            showToast("Error unbanning IP: " + data.error, 'error');
           } else {
-            alert(data.message || "IP unbanned successfully");
+            showToast(data.message || "IP unbanned successfully", 'success');
           }
           return refreshData({ silent: true });
         })
         .catch(function(err) {
-          alert("Error: " + err);
+          showToast("Error: " + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1943,14 +2009,14 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert("Error loading config: " + data.error);
+            showToast("Error loading config: " + data.error, 'error');
-          } else {
+            return;
+          }
           textArea.value = data.config;
           openModal('jailConfigModal');
-          }
         })
         .catch(function(err) {
-          alert("Error: " + err);
+          showToast("Error: " + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1971,15 +2037,15 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert("Error saving config: " + data.error);
+            showToast("Error saving config: " + data.error, 'error');
-          } else {
+            return;
-            console.log("Filter saved successfully. Restart needed? " + data.restartNeeded);
-            closeModal('jailConfigModal');
-            document.getElementById('restartBanner').style.display = 'block';
           }
+          closeModal('jailConfigModal');
+          showToast(t('filter_debug.save_success', 'Filter saved and reloaded'), 'success');
+          return refreshData({ silent: true });
         })
         .catch(function(err) {
-          alert("Error: " + err);
+          showToast("Error: " + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -1990,7 +2056,7 @@
     // Fetches the full-list of all jails (from /jails/manage) and builds a list with toggle switches.
     function openManageJailsModal() {
       if (!currentServerId) {
-        alert(t('servers.selector.none', 'Please add and select a Fail2ban server first.'));
+        showToast(t('servers.selector.none', 'Please add and select a Fail2ban server first.'), 'info');
         return;
       }
       showLoading(true);
@@ -2000,7 +2066,7 @@
         .then(res => res.json())
         .then(data => {
           if (!data.jails?.length) {
-            alert("No jails found.");
+            showToast("No jails found for this server.", 'info');
             return;
           }
 
@@ -2039,7 +2105,7 @@
           document.getElementById('jailsList').innerHTML = html;
           openModal('manageJailsModal');
         })
-        .catch(err => alert("Error fetching jails: " + err))
+        .catch(err => showToast("Error fetching jails: " + err, 'error'))
         .finally(() => showLoading(false));
     }
 
@@ -2063,14 +2129,17 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert("Error saving jail settings: " + data.error);
+            showToast("Error saving jail settings: " + data.error, 'error');
-          } else {
+            return;
-            // A restart of fail2ban is needed, to enable or disable jails - a reload is not enough
-            document.getElementById('restartBanner').style.display = 'block';
           }
+          showToast(t('jails.manage.save_success', 'Jail settings saved. Please restart Fail2ban.'), 'info');
+          return loadServers().then(function() {
+            updateRestartBanner();
+            return refreshData({ silent: true });
+          });
         })
         .catch(function(err) {
-          alert("Error: " + err);
+          showToast("Error: " + err, 'error');
         })
         .finally(function() {
           showLoading(false);
@@ -2126,7 +2195,7 @@
           document.getElementById('ignoreIP').value = data.ignoreip || '';
         })
         .catch(err => {
-          alert('Error loading settings: ' + err);
+          showToast('Error loading settings: ' + err, 'error');
         })
         .finally(() => showLoading(false));
     }
@@ -2173,17 +2242,20 @@
         .then(res => res.json())
         .then(data => {
           if (data.error) {
-            alert('Error saving settings: ' + data.error + data.details);
+            showToast('Error saving settings: ' + (data.error + (data.details || '')), 'error');
           } else {
             var selectedLang = $('#languageSelect').val();
             loadTranslations(selectedLang);
             console.log("Settings saved successfully. Restart needed? " + data.restartNeeded);
+            showToast(t('settings.save_success', 'Settings saved'), 'success');
             if (data.restartNeeded) {
-              document.getElementById('restartBanner').style.display = 'block';
+              loadServers().then(function() {
+                updateRestartBanner();
+              });
             }
           }
         })
-        .catch(err => alert('Error: ' + err))
+        .catch(err => showToast('Error saving settings: ' + err, 'error'))
         .finally(() => showLoading(false));
     }
 
@@ -2199,7 +2271,7 @@
         .then(res => res.json())
         .then(data => {
           if (data.error) {
-            alert('Error loading filters: ' + data.error);
+            showToast('Error loading filters: ' + data.error, 'error');
             return;
           }
           const select = document.getElementById('filterSelect');
@@ -2229,7 +2301,7 @@
           }
         })
         .catch(err => {
-          alert('Error loading filters: ' + err);
+          showToast('Error loading filters: ' + err, 'error');
         })
         .finally(() => showLoading(false));
     }
@@ -2244,12 +2316,12 @@
         .then(res => res.json())
         .then(data => {
           if (data.error) {
-            alert('Error sending test email: ' + data.error);
+            showToast('Error sending test email: ' + data.error, 'error');
           } else {
-            alert('Test email sent successfully!');
+            showToast('Test email sent successfully!', 'success');
           }
         })
-        .catch(error => alert('Error: ' + error))
+        .catch(error => showToast('Error sending test email: ' + error, 'error'))
         .finally(() => showLoading(false));
     }
 
@@ -2259,7 +2331,7 @@
       const lines = document.getElementById('logLinesTextarea').value.split('\n');
       
       if (!filterName) {
-        alert('Please select a filter.');
+        showToast('Please select a filter.', 'info');
         return;
       }
 
@@ -2275,13 +2347,13 @@
         .then(res => res.json())
         .then(data => {
           if (data.error) {
-            alert('Error: ' + data.error);
+            showToast('Error testing filter: ' + data.error, 'error');
             return;
           }
           renderTestResults(data.matches);
         })
         .catch(err => {
-          alert('Error: ' + err);
+          showToast('Error testing filter: ' + err, 'error');
         })
         .finally(() => showLoading(false));
     }
@@ -2332,14 +2404,17 @@
         .then(function(res) { return res.json(); })
         .then(function(data) {
           if (data.error) {
-            alert("Error: " + data.error);
+            showToast("Failed to restart Fail2ban: " + data.error, 'error');
-          } else {
+            return;
-            document.getElementById('restartBanner').style.display = 'none';
-            return refreshData({ silent: true });
           }
+          return loadServers().then(function() {
+            updateRestartBanner();
+            showToast(t('restart_banner.success', 'Fail2ban restart triggered'), 'success');
+            return refreshData({ silent: true });
+          });
         })
         .catch(function(err) {
-          alert("Error: " + err);
+          showToast("Failed to restart Fail2ban: " + err, 'error');
         })
         .finally(function() {
           showLoading(false);