feat: first version of serve

Signed-off-by: Thomas Schuetz <thomas.schuetz@t-sc.eu>

cmd/serve/serve.go

@@ -0,0 +1,60 @@
+package serve
+
+import (
+	"fmt"
+	"github.com/fatih/color"
+	server2 "github.com/k8sgpt-ai/k8sgpt/pkg/server"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"os"
+)
+
+var (
+	port    string
+	backend string
+	token   string
+)
+
+var ServeCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Runs k8sgpt as a server",
+	Long:  `Runs k8sgpt as a server to allow for easy integration with other applications.`,
+	Run: func(cmd *cobra.Command, args []string) {
+
+		backendType := viper.GetString("backend_type")
+		if backendType == "" {
+			color.Red("No backend set. Please run k8sgpt auth")
+			os.Exit(1)
+		}
+
+		if backend != "" {
+			backendType = backend
+		}
+
+		token := viper.GetString(fmt.Sprintf("%s_key", backendType))
+		// check if nil
+		if token == "" {
+			color.Red("No %s key set. Please run k8sgpt auth", backendType)
+			os.Exit(1)
+		}
+
+		server := server2.K8sGPTServer{
+			Backend: backend,
+			Port:    port,
+			Token:   token,
+		}
+
+		err := server.Serve()
+		if err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+		// override the default backend if a flag is provided
+	},
+}
+
+func init() {
+	// add flag for backend
+	ServeCmd.Flags().StringVarP(&port, "port", "p", "8080", "Port to run the server on")
+	ServeCmd.Flags().StringVarP(&backend, "backend", "b", "openai", "Backend AI provider")
+}