feat: Add Debian packaging script, enhance configuration loading with multi-path support, and enable config saving.

Cargo.lock

@@ -2,17 +2,6 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "C2LInspecz"
-version = "0.1.0"
-dependencies = [
- "eframe",
- "serde",
- "serde_json",
- "sysinfo",
- "tokio",
-]
-
 [[package]]
 name = "ab_glyph"
 version = "0.2.32"
@@ -507,6 +496,17 @@ version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
 
+[[package]]
+name = "c2linspecz"
+version = "0.1.0"
+dependencies = [
+ "eframe",
+ "serde",
+ "serde_json",
+ "sysinfo",
+ "tokio",
+]
+
 [[package]]
 name = "calloop"
 version = "0.13.0"

Cargo.toml

@@ -1,7 +1,9 @@
 [package]
-name = "C2LInspecz"
+name = "c2linspecz"
 version = "0.1.0"
 edition = "2024"
+authors = ["Code2Lab Team <support@code2lab.com>"]
+description = "Automated POS Diagnostic & Health Monitoring Tool"
 
 [dependencies]
 eframe = "0.33.3"
@@ -9,3 +11,12 @@ serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.149"
 sysinfo = "0.38.0"
 tokio = { version = "1.49.0", features = ["full"] }
+
+[package.metadata.deb]
+maintainer = "Code2Lab support <support@code2lab.com>"
+copyright = "2024, Code2Lab"
+license-file = ["C2LInspecz.md", "0"]
+assets = [
+    ["target/release/c2linspecz", "/usr/bin/c2linspecz", "755"],
+    ["config.json", "/etc/c2linspecz/config.json", "644"]
+]

README.md

@@ -1,3 +1,53 @@
-# C2LInspecz
+# C2LInspecz - Automated Smartsales System Health
 
-Smartsales System Diagnosis tool
+**C2LInspecz** is the official diagnostic and health-monitoring utility by **Code2Lab**. It is a modern, high-performance GUI application designed to identify, troubleshoot, and resolve issues within the Smartsales POS ecosystem.
+
+## 🚀 Core Features
+
+### 1. Automated System Audit
+A comprehensive "One-Click" audit that analyzes your shop's infrastructure in real-time:
+- **Network Integrity**: Verifies LAN connectivity, Internet access, and Shop Server reachability.
+- **Printer Ecosystem**:
+    - **USB Printers (Cashier)**: Scans the physical USB bus to ensure local receipt printers are connected.
+    - **Network Printers (Kitchen/Bar)**: Pings remote printers to verify they are online and responding.
+- **Hardware Health**: Monitors CPU load, RAM usage, and Disk space.
+
+### 2. The "Spooler Shield" (Auto-Fix)
+The tool monitors the internal print queue for "Stuck" jobs that often freeze cashier operations. If glitches are detected, the user can purge the queue with a single click to restore normal printing.
+
+### 3. Integrated Settings Wizard
+No more manual JSON editing. Shop managers can use the **⚙️ Settings** tab directly in the app to:
+- Update the Shop Server IP.
+- Add, Edit, or Remove Network and USB printers.
+- Save configurations instantly to the system path.
+
+### 4. Smart Escalation
+Guides users through self-repair (e.g., "Check power cable"). If a failure is unresolvable locally, the tool packages diagnostic logs into a support ticket for the Code2Lab team.
+
+## 📦 Installation
+
+C2LInspecz is distributed as a native Debian package for seamless POS integration.
+
+1. Download the latest `.deb` package.
+2. Install via terminal:
+   ```bash
+   sudo dpkg -i c2linspecz_0.1.0_amd64.deb
+   ```
+3. Launch **"C2LInspecz"** from your system's Applications menu.
+
+## 🛠 Developer Guide
+
+### Build Requirements
+- Rust (Cargo)
+- `dpkg-deb` tool
+
+### Packaging the Installer
+To generate a new release installer:
+```bash
+cargo build --release
+./scripts/build_deb.sh
+```
+The final package will be ready at `target/c2linspecz_0.1.0_amd64.deb`.
+
+---
+© 2026 **Code2Lab Team** | [support@code2lab.com](mailto:support@code2lab.com)

config.json

@@ -8,12 +8,20 @@
     {
       "name": "Bar Printer",
       "ip": "192.168.1.201"
+    },
+    {
+      "name": "test printe",
+      "ip": "192.168.1.202"
     }
   ],
   "receipt_printers": [
     {
       "name": "Main Cashier",
       "usb_id": "1fc9:2016"
+    },
+    {
+      "name": "",
+      "usb_id": ""
     }
   ]
 }

scripts/build_deb.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+# Manual .deb packaging script for C2LInspecz
+
+set -e
+
+PKG_NAME="c2linspecz"
+VERSION="0.1.0"
+ARCH="amd64"
+BUILD_DIR="target/debian_pkg"
+
+echo "Building .deb package for $PKG_NAME v$VERSION..."
+
+# Clean up previous build
+rm -rf $BUILD_DIR
+mkdir -p $BUILD_DIR/DEBIAN
+mkdir -p $BUILD_DIR/usr/bin
+mkdir -p $BUILD_DIR/usr/share/applications
+mkdir -p $BUILD_DIR/etc/c2linspecz
+
+# Copy binary (must be built with cargo build --release first)
+if [ ! -f target/release/c2linspecz ]; then
+    echo "Error: target/release/c2linspecz not found. Please run 'cargo build --release' first."
+    exit 1
+fi
+cp target/release/c2linspecz $BUILD_DIR/usr/bin/
+
+# Copy config template
+cp config.json $BUILD_DIR/etc/c2linspecz/
+
+# Create desktop entry
+cat <<EOF > $BUILD_DIR/usr/share/applications/c2linspecz.desktop
+[Desktop Entry]
+Name=C2LInspecz
+Comment=Automated POS Diagnostic & Health Monitoring Tool
+Exec=/usr/bin/c2linspecz
+Terminal=false
+Type=Application
+Categories=Utility;System;
+Icon=utilities-system-monitor
+EOF
+
+# Create control file
+cat <<EOF > $BUILD_DIR/DEBIAN/control
+Package: $PKG_NAME
+Version: $VERSION
+Section: utils
+Priority: optional
+Architecture: $ARCH
+Maintainer: Code2Lab Team <support@code2lab.com>
+Description: Automated POS Diagnostic & Health Monitoring Tool
+ This tool is designed to identify, troubleshoot, and resolve issues within the POS ecosystem.
+EOF
+
+# Build the package
+dpkg-deb --build $BUILD_DIR "target/${PKG_NAME}_${VERSION}_${ARCH}.deb"
+
+echo "Package generated at target/${PKG_NAME}_${VERSION}_${ARCH}.deb"

src/main.rs

@@ -1,37 +1,39 @@
+use eframe::egui;
 use serde::{Deserialize, Serialize};
 use std::fs::File;
-use std::io::{self, Read, Write};
+use std::io::{Read, Write};
 use std::process::Command;
+use std::sync::{Arc, Mutex};
 use std::time::Duration;
 use sysinfo::{Disks, System};
-use tokio::time::sleep;
+use tokio::runtime::Runtime;
 
-#[derive(Deserialize, Serialize, Clone)]
+#[derive(Deserialize, Serialize, Clone, Default)]
 struct NetworkDevice {
     name: String,
     ip: String,
 }
 
-#[derive(Deserialize, Serialize, Clone)]
+#[derive(Deserialize, Serialize, Clone, Default)]
 struct UsbDevice {
     name: String,
     usb_id: String,
 }
 
-#[derive(Deserialize, Serialize, Clone)]
+#[derive(Deserialize, Serialize, Clone, Default)]
 struct Config {
     shop_server_ip: String,
     kitchen_printers: Vec<NetworkDevice>,
     receipt_printers: Vec<UsbDevice>,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Clone, Default)]
 struct DeviceStatus {
     name: String,
     online: bool,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Clone, Default)]
 struct ScanResult {
     timestamp: String,
     hardware: HardwareStatus,
@@ -39,7 +41,7 @@ struct ScanResult {
     printers: Vec<PrinterStatus>,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Clone, Default)]
 struct HardwareStatus {
     ram_used_mb: u64,
     ram_total_mb: u64,
@@ -47,7 +49,7 @@ struct HardwareStatus {
     disk_free_gb: f64,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Clone, Default)]
 struct NetworkStatus {
     lan_connected: bool,
     server_online: bool,
@@ -55,7 +57,7 @@ struct NetworkStatus {
     internet_online: bool,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Clone, Default)]
 struct PrinterStatus {
     name: String,
     usb_detected: bool,
@@ -65,11 +67,39 @@ struct PrinterStatus {
 
 impl Config {
     fn load() -> Self {
-        let mut file = File::open("config.json").expect("config.json not found");
+        let paths = [
+            "config.json".to_string(),
+            "/etc/c2linspecz/config.json".to_string(),
+            std::env::current_exe()
+                .ok()
+                .and_then(|p| {
+                    p.parent()
+                        .map(|parent| parent.join("config.json").to_string_lossy().into_owned())
+                })
+                .unwrap_or_default(),
+        ];
+
+        for path in paths {
+            if let Ok(mut file) = File::open(&path) {
                 let mut data = String::new();
-        file.read_to_string(&mut data)
+                if file.read_to_string(&mut data).is_ok() {
-            .expect("Unable to read config.json");
+                    if let Ok(config) = serde_json::from_str(&data) {
-        serde_json::from_str(&data).expect("JSON format error")
+                        return config;
+                    }
+                }
+            }
+        }
+        Config::default()
+    }
+
+    fn save(&self) -> bool {
+        let path = "config.json"; // Default to current dir for now, or fallback to standard
+        if let Ok(mut file) = File::create(path) {
+            if let Ok(data) = serde_json::to_string_pretty(self) {
+                return file.write_all(data.as_bytes()).is_ok();
+            }
+        }
+        false
     }
 }
 
@@ -98,16 +128,15 @@ async fn run_diagnosis(config: &Config) -> ScanResult {
     let total_ram = sys.total_memory() / 1024 / 1024;
     let used_ram = sys.used_memory() / 1024 / 1024;
     sys.refresh_cpu_usage();
-    sleep(Duration::from_millis(200)).await;
+    tokio::time::sleep(Duration::from_millis(100)).await;
     sys.refresh_cpu_usage();
     let cpu_load: f32 =
         sys.cpus().iter().map(|cpu| cpu.cpu_usage()).sum::<f32>() / sys.cpus().len() as f32;
 
     let disks = Disks::new_with_refreshed_list();
-    let root_disk = disks
+    let disk_free = disks
         .iter()
-        .find(|d| d.mount_point().to_string_lossy() == "/");
+        .find(|d| d.mount_point().to_string_lossy() == "/")
-    let disk_free = root_disk
         .map(|d| d.available_space() as f64 / 1e9)
         .unwrap_or(0.0);
 
@@ -132,7 +161,7 @@ async fn run_diagnosis(config: &Config) -> ScanResult {
         });
     }
 
-    // Receipt Printers (USB)
+    // Printers
     let usb_output = Command::new("lsusb")
         .output()
         .map(|o| String::from_utf8_lossy(&o.stdout).to_string())
@@ -158,9 +187,8 @@ async fn run_diagnosis(config: &Config) -> ScanResult {
         printer_results.push(PrinterStatus {
             name: p.name.clone(),
             usb_detected: usb_output.contains(&p.usb_id),
-            cups_ready: lpstat_output.contains("enabled")
+            cups_ready: lpstat_output.contains("enabled"),
-                && (lpstat_output.contains("idle") || lpstat_output.contains("printing")),
+            pending_jobs: jobs_count,
-            pending_jobs: jobs_count, // CUPS queue is often shared or we check per-printer if needed, but for now we use total stuck jobs as the trigger
         });
     }
 
@@ -183,166 +211,264 @@ async fn run_diagnosis(config: &Config) -> ScanResult {
 }
 
 fn fix_printer_queue() -> bool {
-    println!("\n[SPOOLER SHIELD] Attempting to clear stuck jobs...");
+    Command::new("cancel")
-    // 1. Purge all jobs
+        .args(["-a", "-x"])
-    let purge = Command::new("cancel").args(["-a", "-x"]).status();
+        .status()
-    match purge {
+        .map(|s| s.success())
-        Ok(status) if status.success() => {
+        .unwrap_or(false)
-            println!("SUCCESS: All pending print jobs have been purged.");
-            // 2. Restart cups if possible (might need sudo, but we'll try)
-            // Command::new("systemctl").args(["restart", "cups"]).status().ok();
-            true
 }
-        _ => {
+
-            println!("ERROR: Failed to clear queue automatically. Please check printer power.");
+struct C2LApp {
-            false
+    config: Config,
+    result: Arc<Mutex<Option<ScanResult>>>,
+    is_scanning: Arc<Mutex<bool>>,
+    rt: Runtime,
+    last_error: Option<String>,
+    tab: Tab,
 }
+
+#[derive(PartialEq)]
+enum Tab {
+    Dashboard,
+    Settings,
+}
+
+impl C2LApp {
+    fn new(_cc: &eframe::CreationContext<'_>) -> Self {
+        C2LApp {
+            config: Config::load(),
+            result: Arc::new(Mutex::new(None)),
+            is_scanning: Arc::new(Mutex::new(false)),
+            rt: Runtime::new().expect("Tokio runtime failed"),
+            last_error: None,
+            tab: Tab::Dashboard,
         }
     }
 
-fn send_support_ticket(config: &Config, result: &ScanResult) {
+    fn trigger_scan(&self) {
-    println!("\n[ONSITE ESCALATION]");
+        let config = self.config.clone();
-    println!(
+        let result_store = self.result.clone();
-        "WARNING: This service may be billable if the issue is a hardware failure (cables, broken hardware)."
+        let scanning_status = self.is_scanning.clone();
-    );
-    print!("Do you wish to proceed with generating a Ticket? (y/N): ");
-    io::stdout().flush().unwrap();
 
-    let mut input = String::new();
+        self.rt.spawn(async move {
-    io::stdin().read_line(&mut input).unwrap();
+            *scanning_status.lock().unwrap() = true;
-    if input.trim().to_lowercase() != "y" {
+            let fresh_result = run_diagnosis(&config).await;
-        println!("Ticket cancelled.");
+            *result_store.lock().unwrap() = Some(fresh_result);
-        return;
+            *scanning_status.lock().unwrap() = false;
+        });
+    }
 }
 
-    println!("Packaging logs...");
+impl eframe::App for C2LApp {
-    let payload = serde_json::json!({
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
-        "config": config,
+        egui::CentralPanel::default().show(ctx, |ui| {
-        "diagnostics": result,
+            ui.horizontal(|ui| {
-        "system_info": "Linux x86_64",
+                ui.selectable_value(&mut self.tab, Tab::Dashboard, "📊 Dashboard");
+                ui.selectable_value(&mut self.tab, Tab::Settings, "⚙️ Settings");
+            });
+            ui.separator();
+
+            match self.tab {
+                Tab::Dashboard => self.ui_dashboard(ui),
+                Tab::Settings => self.ui_settings(ui),
+            }
         });
 
-    // In a real app, this would be an API call
+        // Auto-refresh scan result
-    println!("SUCCESS: Support Ticket #C2L-{:04} generated.", 9999);
+        ctx.request_repaint_after(Duration::from_millis(500));
-    println!("Log Payload: {}", serde_json::to_string(&payload).unwrap());
+    }
-    println!("The Code2Lab team has been notified. Please keep your device online.");
 }
 
-#[tokio::main]
+impl C2LApp {
-async fn main() {
+    fn ui_dashboard(&mut self, ui: &mut egui::Ui) {
-    let config = Config::load();
+        ui.heading("C2LInspecz - Automated Smartsales System Health");
 
-    println!("====================================================");
+        let scanning = *self.is_scanning.lock().unwrap();
-    println!("    C2LInspecz - Automated System Health Check");
+        if ui
-    println!("    Status: INITIALIZING DIAGNOSTICS...");
+            .add_enabled(!scanning, egui::Button::new("🔍 Run Full Audit"))
-    println!("====================================================");
+            .clicked()
-
+        {
-    // 1. Automatic Diagnosis
+            self.trigger_scan();
-    println!("> Running System Audit...");
-    let mut result = run_diagnosis(&config).await;
-
-    // Detailed Status Logs
-    println!(
-        "  [1/3] Network: LAN: {}, WAN: {}",
-        if result.network.lan_connected {
-            "OK"
-        } else {
-            "FAIL (Unplugged)"
-        },
-        if result.network.internet_online {
-            "OK"
-        } else {
-            "FAIL (No Internet)"
         }
+
+        if scanning {
+            ui.add(
+                egui::ProgressBar::new(0.5)
+                    .animate(true)
+                    .text("Performing System Audit..."),
             );
+        }
 
-    print!(
+        ui.separator();
-        "  [2/3] Communication: Shop Server: {}",
+
-        if result.network.server_online {
+        let result_opt = self.result.lock().unwrap().clone();
-            "OK"
+        if let Some(res) = result_opt {
+            ui.group(|ui| {
+                ui.label(format!("Last Scan: {}", res.timestamp));
+                ui.horizontal(|ui| {
+                    ui.vertical(|ui| {
+                        ui.set_min_width(200.0);
+                        ui.heading("🌐 Network");
+                        ui.label(format!(
+                            "LAN: {}",
+                            if res.network.lan_connected {
+                                "✅ OK"
                             } else {
-            "FAIL (Offline)"
+                                "❌ Unplugged"
                             }
-    );
+                        ));
-    for p in &result.network.kitchen_printers {
+                        ui.label(format!(
-        print!(", {}: {}", p.name, if p.online { "OK" } else { "FAIL" });
+                            "WAN: {}",
+                            if res.network.internet_online {
+                                "✅ Online"
+                            } else {
+                                "❌ Offline"
                             }
-    println!();
+                        ));
+                        ui.label(format!(
+                            "Server: {}",
+                            if res.network.server_online {
+                                "✅ REACHABLE"
+                            } else {
+                                "❌ OFFLINE"
+                            }
+                        ));
+                    });
 
-    print!("  [3/3] Printers:");
+                    ui.vertical(|ui| {
-    for p in &result.printers {
+                        ui.heading("🖨️ Printers");
-        print!(
+                        for p in &res.printers {
-            " [{}: USB: {}, Jobs: {}]",
+                            ui.label(format!(
+                                "{}: {}",
                                 p.name,
-            if p.usb_detected { "OK" } else { "FAIL" },
+                                if p.usb_detected {
+                                    "✅ Found"
+                                } else {
+                                    "❌ NOT DETECTED"
+                                }
+                            ));
+                            if p.pending_jobs > 0 {
+                                ui.label(
+                                    egui::RichText::new(format!(
+                                        "⚠️ {} jobs stuck!",
                                         p.pending_jobs
+                                    ))
+                                    .color(egui::Color32::RED),
                                 );
-    }
+                                if ui.button("🛡️ Clear Spooler").clicked() {
-    println!();
+                                    fix_printer_queue();
-
+                                    self.trigger_scan();
-    // 2. Automatic Auto-Fix (Printer Spooler)
-    let any_stuck = result.printers.iter().any(|p| p.pending_jobs > 0);
-    if any_stuck {
-        println!("> Stuck jobs detected. Triggering Spooler Shield...");
-        if fix_printer_queue() {
-            println!("> Auto-fix applied. Re-verifying systems...");
-            let fresh_scan = run_diagnosis(&config).await;
-            result.printers = fresh_scan.printers;
                                 }
                             }
-
-    // 3. Evaluation
-    let mut critical_issues: Vec<String> = Vec::new();
-
-    if !result.network.lan_connected {
-        critical_issues.push("HARDWARE: Ethernet cable is UNPLUGGED or DAMAGED.".to_string());
-    } else if !result.network.server_online {
-        critical_issues.push("COMMUNICATION: Local Shop Server is UNREACHABLE.".to_string());
                         }
-
+                        ui.add_space(5.0);
-    for p in &result.network.kitchen_printers {
+                        ui.label("Network Printers:");
-        if !p.online {
+                        for kp in &res.network.kitchen_printers {
-            critical_issues.push(format!("NETWORK: Kitchen Printer '{}' is OFFLINE.", p.name));
+                            ui.label(format!(
+                                "{}: {}",
+                                kp.name,
+                                if kp.online {
+                                    "✅ Online"
+                                } else {
+                                    "❌ Offline"
                                 }
-    }
-
-    for p in &result.printers {
-        if !p.usb_detected {
-            critical_issues.push(format!(
-                "HARDWARE: Receipt Printer '{}' is NOT DETECTED.",
-                p.name
-            ));
-        } else if p.pending_jobs > 0 {
-            critical_issues.push(format!(
-                "SPOOLER: Jobs remain STUCK for printer '{}'.",
-                p.name
                             ));
                         }
-    }
+                    });
+                });
+            });
 
-    // 4. Reporting
+            ui.separator();
-    println!("\n[FINAL HEALTH REPORT]");
+            ui.collapsing("💻 Hardware Info", |ui| {
-    if critical_issues.is_empty() {
+                ui.label(format!("CPU Usage: {:.1}%", res.hardware.cpu_usage));
-        println!("✅ SUCCESS: All systems are operational.");
+                ui.add(egui::ProgressBar::new(res.hardware.cpu_usage / 100.0));
-        println!("The tool has verified your hardware and cleared minor software glitches.");
+                ui.label(format!(
+                    "RAM: {} / {} MB",
+                    res.hardware.ram_used_mb, res.hardware.ram_total_mb
+                ));
+                ui.label(format!("Disk Free: {:.1} GB", res.hardware.disk_free_gb));
+            });
         } else {
-        println!("❌ FAILURES DETECTED:");
+            ui.label("Waiting for first scan result...");
-        for issue in &critical_issues {
+            if !scanning {
-            println!("   - {}", issue);
+                self.trigger_scan();
+            }
+        }
     }
 
-        println!("\n----------------------------------------------------");
+    fn ui_settings(&mut self, ui: &mut egui::Ui) {
-        println!("The tool could not resolve these physical or network issues.");
+        ui.heading("Shop Configuration");
-        println!("Would you like to open a ticket for Onsite Support?");
+        ui.label("Configure local IPs and device IDs here.");
-        print!("\nOpen Support Ticket #C2L-9999? (y/N): ");
-        io::stdout().flush().unwrap();
 
-        let mut input = String::new();
+        ui.add_space(10.0);
-        io::stdin().read_line(&mut input).unwrap();
+        ui.label("Shop Server IP:");
-        if input.trim().to_lowercase() == "y" {
+        ui.text_edit_singleline(&mut self.config.shop_server_ip);
-            send_support_ticket(&config, &result);
+
+        ui.separator();
+        ui.label("Network Printers (Kitchen/Bar):");
+        let mut to_remove_kp = None;
+        for (i, p) in self.config.kitchen_printers.iter_mut().enumerate() {
+            ui.horizontal(|ui| {
+                ui.text_edit_singleline(&mut p.name).on_hover_text("Name");
+                ui.text_edit_singleline(&mut p.ip)
+                    .on_hover_text("IP Address");
+                if ui.button("🗑").clicked() {
+                    to_remove_kp = Some(i);
+                }
+            });
+        }
+        if let Some(i) = to_remove_kp {
+            self.config.kitchen_printers.remove(i);
+        }
+        if ui.button("➕ Add Network Printer").clicked() {
+            self.config.kitchen_printers.push(NetworkDevice::default());
+        }
+
+        ui.separator();
+        ui.label("USB Printers (Cashier):");
+        let mut to_remove_rp = None;
+        for (i, p) in self.config.receipt_printers.iter_mut().enumerate() {
+            ui.horizontal(|ui| {
+                ui.text_edit_singleline(&mut p.name);
+                ui.text_edit_singleline(&mut p.usb_id)
+                    .on_hover_text("USB ID (e.g. 1fc9:2016)");
+                if ui.button("🗑").clicked() {
+                    to_remove_rp = Some(i);
+                }
+            });
+        }
+        if let Some(i) = to_remove_rp {
+            self.config.receipt_printers.remove(i);
+        }
+        if ui.button("➕ Add USB Printer").clicked() {
+            self.config.receipt_printers.push(UsbDevice::default());
+        }
+
+        ui.add_space(20.0);
+        if ui.button("💾 Save Configuration").clicked() {
+            if self.config.save() {
+                self.last_error = Some("Configuration saved successfully!".to_string());
             } else {
-            println!("Process ended. Please contact your manager if issues persist.");
+                self.last_error = Some("Failed to save configuration.".to_string());
+            }
+        }
+
+        if let Some(msg) = &self.last_error {
+            ui.label(msg);
         }
     }
 }
+
+fn main() -> eframe::Result {
+    let native_options = eframe::NativeOptions {
+        viewport: egui::ViewportBuilder::default()
+            .with_inner_size([600.0, 500.0])
+            .with_title("C2LInspecz"),
+        ..Default::default()
+    };
+    eframe::run_native(
+        "c2linspecz",
+        native_options,
+        Box::new(|cc| Ok(Box::new(C2LApp::new(cc)))),
+    )
+}