Create a countdown terminal object

Author: duncan3dc

src/TerminalObject/Dynamic/Countdown.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace League\CLImate\TerminalObject\Dynamic;
+
+use function sleep;
+
+final class Countdown extends DynamicTerminalObject
+{
+    /** @var string */
+    private $label = "";
+
+    /** @var int */
+    private $from = 5;
+
+
+    /**
+     * @param string $label
+     */
+    public function __construct(string $label = "Starting in... ")
+    {
+        $this->label = $label;
+    }
+
+
+    /**
+     * @param int $from
+     *
+     * @return self
+     */
+    public function from(int $from): self
+    {
+        $this->from = $from;
+        return $this;
+    }
+
+
+    /**
+     * @return void
+     */
+    public function run(): void
+    {
+        $firstLine = true;
+        $i = $this->from;
+        while (true) {
+
+            $content = "";
+
+            if ($firstLine) {
+                $firstLine = false;
+            } else {
+                $content .= $this->util->cursor->up(1);
+                $content .= $this->util->cursor->startOfCurrentLine();
+                $content .= $this->util->cursor->deleteCurrentLine();
+            }
+
+            $content .= $this->label;
+            if ($i > 0) {
+                $content .= $i;
+            }
+
+            $this->output->write($this->parser->apply($content));
+            if ($i < 1) {
+                break;
+            }
+
+            sleep(1);
+            --$i;
+        }
+    }
+}