first step to lib reformation

gottyLib/gotty.go

@@ -0,0 +1,97 @@
+package gottyLib
+
+import (
+	"context"
+	"fmt"
+	"github.com/kernel-punk/gotty/backend/localcommand"
+	"github.com/kernel-punk/gotty/server"
+	"github.com/kernel-punk/gotty/utils"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func Run(runParameters RunParameters) error {
+
+	//runParameters := RunParameters{
+	//
+	//	cmd:  "htop",
+	//	args: []string{},
+	//	ssl:  false,
+	//}
+
+	hostname, _ := os.Hostname()
+
+	appOptions := &server.Options{}
+	if err := utils.ApplyDefaultValues(appOptions); err != nil {
+		return err
+	}
+
+	backendOptions := &localcommand.Options{}
+	if err := utils.ApplyDefaultValues(backendOptions); err != nil {
+		return err
+	}
+
+	factory, err := localcommand.NewFactory(runParameters.Cmd, runParameters.Args, backendOptions)
+	if err != nil {
+		return err
+	}
+
+	appOptions.TitleVariables = map[string]interface{}{
+		"command":  runParameters.Cmd,
+		"argv":     runParameters.Args,
+		"hostname": hostname,
+	}
+
+	srv, err := server.New(factory, appOptions)
+	if err != nil {
+		return err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	gCtx, gCancel := context.WithCancel(context.Background())
+
+	errs := make(chan error, 1)
+	go func() {
+		errs <- srv.Run(ctx, server.WithGracefullContext(gCtx))
+	}()
+	err = waitSignals(errs, cancel, gCancel)
+
+	if err != nil && err != context.Canceled {
+		return err
+	}
+
+	return nil
+}
+
+func waitSignals(errs chan error, cancel context.CancelFunc, gracefullCancel context.CancelFunc) error {
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(
+		sigChan,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+	)
+
+	select {
+	case err := <-errs:
+		return err
+
+	case s := <-sigChan:
+		switch s {
+		case syscall.SIGINT:
+			gracefullCancel()
+			fmt.Println("C-C to force close")
+			select {
+			case err := <-errs:
+				return err
+			case <-sigChan:
+				fmt.Println("Force closing...")
+				cancel()
+				return <-errs
+			}
+		default:
+			cancel()
+			return <-errs
+		}
+	}
+}

gottyLib/types.go

@@ -0,0 +1,7 @@
+package gottyLib
+
+type RunParameters struct {
+	Cmd  string
+	Args []string
+	Ssl  bool
+}