update

backend-golang/file.go

@@ -0,0 +1,63 @@
+package backend_golang
+
+import (
+	"encoding/json"
+	"os"
+
+	"github.com/cavaliergopher/grab/v3"
+)
+
+func (a *App) SaveJson(fileName string, jsonData any) error {
+	text, err := json.MarshalIndent(jsonData, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	if err := os.WriteFile(fileName, text, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (a *App) ReadJson(fileName string) (any, error) {
+	file, err := os.ReadFile(fileName)
+	if err != nil {
+		return nil, err
+	}
+
+	var data any
+	err = json.Unmarshal(file, &data)
+	if err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}
+
+func (a *App) FileExists(fileName string) (bool, error) {
+	_, err := os.Stat(fileName)
+	if err == nil {
+		return true, nil
+	}
+	return false, err
+}
+
+func (a *App) FileInfo(fileName string) (any, error) {
+	info, err := os.Stat(fileName)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]any{
+		"name":  info.Name(),
+		"size":  info.Size(),
+		"isDir": info.IsDir(),
+	}, nil
+}
+
+func (a *App) DownloadFile(path string, url string) error {
+	_, err := grab.Get(path, url)
+	if err != nil {
+		return err
+	}
+	return nil
+}