Initialize serve app functionality

Author: 2hmad

app.go

@@ -0,0 +1,80 @@
+package pulse
+
+import (
+	"fmt"
+	"github.com/common-nighthawk/go-figure"
+	"github.com/valyala/fasthttp"
+	"net"
+)
+
+type (
+	Pulse struct {
+		config *Config
+		server *fasthttp.Server
+		router *Router
+	}
+
+	Config struct {
+		// AppName is the name of the app
+		AppName string `json:"app_name"`
+
+		// Network is the network to use
+		Network string `json:"network"`
+	}
+)
+
+const (
+	// DefaultAppName is the default app name
+	DefaultAppName = "Pulse"
+
+	// DefaultNetwork is the default network
+	DefaultNetwork = "tcp"
+)
+
+func New(config ...Config) *Pulse {
+	app := &Pulse{
+		config: &Config{},
+		server: &fasthttp.Server{},
+	}
+
+	if len(config) > 0 {
+		app.config = &config[0]
+	}
+
+	if app.config.AppName == "" {
+		app.config.AppName = DefaultAppName
+	}
+
+	if app.config.Network == "" {
+		app.config.Network = DefaultNetwork
+	}
+
+	return app
+}
+
+func (f *Pulse) Run(address string) error {
+	handler := RouterHandler(f.router)
+	f.server.Handler = handler
+
+	// setup listener
+	listener, err := net.Listen(f.config.Network, address)
+	if err != nil {
+		return fmt.Errorf("failed to listen: %v", err)
+	}
+
+	// print startup message
+	fmt.Println(f.startupMessage(listener.Addr().String()))
+
+	return f.server.Serve(listener)
+}
+
+func (f *Pulse) startupMessage(addr string) string {
+	myFigure := figure.NewFigure("PULSE", "", true)
+	myFigure.Print()
+
+	var textOne = "=> Server started on <%s>" + "\n"
+	var textTwo = "=> App Name: %s" + "\n"
+	var textThree = "=> Press CTRL+C to stop" + "\n"
+
+	return fmt.Sprintf(textOne, addr) + fmt.Sprintf(textTwo, f.config.AppName) + fmt.Sprintf(textThree)
+}

app_test.go

@@ -0,0 +1,20 @@
+package pulse
+
+import (
+	"testing"
+)
+
+var app *Pulse
+
+func init() {
+	app = New(Config{
+		AppName: "Test App",
+	})
+}
+
+func TestPulse_Run(t *testing.T) {
+	err := app.Run("127.0.0.1:8082")
+	if err != nil {
+		return
+	}
+}