feat: #24 - go

Author: qwik zgheib mossad bashit

Roadmap/24 - DECORADORES/go/qwik-zgheib.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"fmt"
+)
+
+type Greeter interface {
+	Greet(name string) string
+}
+
+type SimpleGreeter struct{}
+
+func (g SimpleGreeter) Greet(name string) string {
+	return fmt.Sprintf("Hello, %s!", name)
+}
+
+type ExcitedDecorator struct {
+	Greeter Greeter
+}
+
+func (e ExcitedDecorator) Greet(name string) string {
+	return e.Greeter.Greet(name) + " How are you doing today?"
+}
+
+type AddGreetingCountDecorator struct {
+	Greeter   Greeter
+	CallCount int
+}
+
+func (c *AddGreetingCountDecorator) Greet(name string) string {
+	c.CallCount++
+	return c.Greeter.Greet(name)
+}
+
+func (c *AddGreetingCountDecorator) GetCallCount() int {
+	return c.CallCount
+}
+
+func main() {
+	greeter := SimpleGreeter{}
+
+	excitedGreeter := ExcitedDecorator{Greeter: greeter}
+
+	countingGreeter := &AddGreetingCountDecorator{Greeter: excitedGreeter}
+
+	fmt.Println(countingGreeter.Greet("qwik"))
+	fmt.Println(countingGreeter.Greet("zgheib"))
+	fmt.Println(countingGreeter.Greet("mossad"))
+
+	fmt.Printf("Greet method has been called %d times\n", countingGreeter.GetCallCount())
+}