basic http server

cmd/ui.go

@@ -1,29 +1,106 @@
 package cmd
 
 import (
+	"errors"
 	"fmt"
+	"io/fs"
+	"os"
+	"strings"
+
+	"code.icod.de/postfix/manager/ui"
+	"git.icod.de/dalu/ginpongo2/v5"
+	"github.com/flosch/pongo2/v5"
+	"github.com/gin-gonic/gin"
 	"github.com/spf13/cobra"
 )
 
+const (
+	prefixTCP  = "tcp:"
+	prefixUNIX = "unix:"
+)
+
+var (
+	uiDebug bool
+	uiAddr  string
+)
+
 // uiCmd represents the ui command
 var uiCmd = &cobra.Command{
 	Use:   "ui",
 	Short: "serves the management ui over http",
-	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("ui called")
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if !uiDebug {
+			gin.SetMode(gin.ReleaseMode)
+		}
+		r := gin.Default()
+		r.SecureJsonPrefix(")]}',\n")
+		r.MaxMultipartMemory = 8 << 20
+		if uiDebug {
+			fmt.Println("debug mode")
+			fl, e := pongo2.NewLocalFileSystemLoader("ui/templates/")
+			if e != nil {
+				return e
+			}
+			hr := ginpongo2.New(true, fl)
+			r.HTMLRender = hr
+		} else {
+			fmt.Println("release mode")
+			subFS, e := fs.Sub(ui.Templates, "templates")
+			if e != nil {
+				return e
+			}
+			fl := pongo2.NewFSLoader(subFS)
+			hr := ginpongo2.New(false, fl)
+			r.HTMLRender = hr
+		}
+
+		// Static
+		r.Static("/assets/", "./assets/")
+
+		r.GET("/", func(cx *gin.Context) {
+			ctx := make(pongo2.Context)
+			type Data struct {
+				Target  string
+				Message string
+			}
+			ctx["data"] = &Data{
+				Target:  "World",
+				Message: "It's a great day to be alive",
+			}
+			cx.HTML(200, "index", ctx)
+		})
+
+		// serve
+		if strings.HasPrefix(uiAddr, prefixTCP) {
+			addr := strings.TrimPrefix(uiAddr, prefixTCP)
+			fmt.Println("listening on", addr)
+			return r.Run(addr)
+		} else if strings.HasPrefix(uiAddr, prefixUNIX) {
+			addr := strings.TrimPrefix(uiAddr, prefixUNIX)
+			if _, e := os.Stat(addr); errors.Is(e, os.ErrNotExist) {
+				fmt.Println("listening on", addr)
+				return r.RunUnix(addr)
+			} else {
+				if e := os.Remove(addr); e != nil {
+					return e
+				} else {
+					fmt.Println("listening on", addr)
+					return r.RunUnix(addr)
+				}
+			}
+		} else {
+			return nil
+		}
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(uiCmd)
-
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// uiCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// uiCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	uiCmd.Flags().BoolVar(&uiDebug, "debug", false, "enable dev mode")
+	uiCmd.Flags().StringVar(
+		&uiAddr,
+		"addr",
+		"tcp:localhost:8080",
+		"either tcp: or unix: e.g. tcp:localhost:3030 unix:/tmp/listen.sock",
+	)
 }