implement SSR for instance config page

app/common/utils.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"embed"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"html/template"
 	"io"
@@ -101,6 +102,20 @@ func LoadHTMLToGin(engine *gin.Engine, html map[string]StaticFile) *template.Tem
 			}
 			return s
 		},
+		"Map": func(values ...any) (map[string]any, error) {
+			if len(values)%2 != 0 {
+				return nil, errors.New("invalid dict call")
+			}
+			dict := make(map[string]interface{}, len(values)/2)
+			for i := 0; i < len(values); i += 2 {
+				key, ok := values[i].(string)
+				if !ok {
+					return nil, errors.New("dict keys must be strings")
+				}
+				dict[key] = values[i+1]
+			}
+			return dict, nil
+		},
 	}
 	tmpl := template.Must(root, LoadAndAddToRoot(engine.FuncMap, root, html))
 	engine.SetHTMLTemplate(tmpl)