1 files changed, 47 insertions, 0 deletions
diff --git a/src/main/java/com/it_jaros/networkScanner/ProgressBar.java b/src/main/java/com/it_jaros/networkScanner/ProgressBar.java
new file mode 100644
index 0000000..50397f3
--- /dev/null
+++ b/src/main/java/com/it_jaros/networkScanner/ProgressBar.java
@@ -0,0 +1,47 @@
+package com.it_jaros.networkScanner;
+
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+public class ProgressBar {
+
+    private ScheduledExecutorService ui = Executors.newSingleThreadScheduledExecutor();
+
+    public void start(List<Progress> hosts) {
+        final int lines = hosts.size();
+        System.out.print("\n\n");
+        ui.scheduleAtFixedRate(() -> {
+            // move cursor UP to where bars start
+            System.out.print("\u001b[" + lines + "A");
+
+            for (Progress progress : hosts) {
+                System.out.print("\u001b[2K\r");
+                System.out.println(bar(
+                        progress.host() + " open=" + progress.open().get(),
+                        progress.done().get(),
+                        progress.total()));
+            }
+        }, 1, 200, TimeUnit.MILLISECONDS);
+    }
+
+    public void stop() {
+        ui.shutdown();
+    }
+
+    public String bar(String label, int done, int total) {
+        int width = 30;
+        double pct = total == 0 ? 1.0 : (done / (double) total);
+        int filled = (int) (pct * width);
+
+        String b = "[" + "#".repeat(filled) + "-".repeat(width - filled) + "]";
+        int percent = (int) (pct * 100);
+
+        return String.format("%-25s %s %3d%% (%d/%d)", label, b, percent, done, total);
+    }
+
+    void onPortFinished(Progress p) {
+        p.done().incrementAndGet();
+    }
+}