refactoring, adding cli to edit config

cmd/cli/commands/version/version.go

@@ -0,0 +1,39 @@
+package version
+
+import (
+	"context"
+	"downloadhub/pkg/constants"
+	"flag"
+	"fmt"
+	"runtime"
+
+	"github.com/google/subcommands"
+)
+
+type (
+	VersionCmd struct {
+	}
+)
+
+func (*VersionCmd) Name() string     { return "version" }
+func (*VersionCmd) Synopsis() string { return "show version and system information" }
+func (*VersionCmd) Usage() string {
+	return `Usage: ./cli version
+
+Print the version of the software
+
+Options:
+`
+}
+
+func (p *VersionCmd) SetFlags(f *flag.FlagSet) {
+}
+
+func (p *VersionCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	fmt.Println("Client: downloadhub cli")
+	fmt.Println(" Version:       " + constants.Version)
+	fmt.Println(" Go version:    " + runtime.Version())
+	fmt.Println(" OS/Arch:       " + runtime.GOOS + "/" + runtime.GOARCH)
+
+	return subcommands.ExitSuccess
+}