feat: draft of excel export

internal/dialogs/dialogs.go

@@ -34,6 +34,11 @@ func ErrorDialog(title string, message string) {
 	application.ErrorDialog().AttachToWindow(currentWindow).SetTitle(title).SetMessage(message).Show()
 }
 
-func SaveFileDialog(title string) {
+func SaveFileDialog(title string, filename string) (string, error) {
 	checkInit()
+	selection, err := application.SaveFileDialog().AttachToWindow(currentWindow).SetFilename(filename).PromptForSingleSelection()
+	if err != nil {
+		return "", err
+	}
+	return selection, nil
 }

internal/extras/excel/export.go

@@ -1 +1,37 @@
 package excel
+
+import (
+	"app/internal/services"
+	"github.com/xuri/excelize/v2"
+	"log/slog"
+	"reflect"
+)
+
+type TableHeaders struct {
+	Headers              []string
+	IgnoredFieldsIndices []uint
+}
+
+func ExportEntityToSpreadsheet[T any](filename, sheetName string, entity T, service services.Service[T]) error {
+	file := excelize.NewFile()
+	defer func() {
+		if err := file.Close(); err != nil {
+			slog.Error("Error while closing excel file: ", err)
+		}
+	}()
+
+	return nil
+}
+
+func ExportHeaders(entity any) TableHeaders {
+	headers := TableHeaders{}
+	v := reflect.TypeOf(entity)
+	for i := range v.NumField() {
+		field := v.Field(i)
+		displayName := field.Tag.Get("displayName")
+		if displayName != "" {
+			
+		}
+	}
+	return headers
+}

internal/models/models.go

@@ -5,10 +5,12 @@ var Entities = []any{
 }
 
 type Post struct {
-	Id   uint `gorm:"primaryKey"`
-	Text string
+	Id        uint   `gorm:"primaryKey"`
+	Text      string `displayName:"Текст"`
+	CreatedAt int64  `gorm:"autoCreateTime" displayName:"Дата публикации" cellType:"timestamp"`
 }
 
+// Author A sample of comment
 type Author struct {
 	Id   uint `gorm:"primaryKey"`
 	Name string