save "create sync group" table in database

internal/domains/accounts/platform.go

@@ -0,0 +1,54 @@
+package accounts
+
+import (
+	"fmt"
+	"strings"
+)
+
+type (
+	Platform string
+)
+
+const (
+	Etsy   Platform = "Etsy"
+	Tiktok Platform = "Tiktok"
+	Wix    Platform = "Wix"
+)
+
+func NewPlatform(s string) (Platform, error) {
+	switch strings.ToLower(s) {
+	case strings.ToLower(string(Etsy)):
+		return Etsy, nil
+	case strings.ToLower(string(Tiktok)):
+		return Tiktok, nil
+	case strings.ToLower(string(Wix)):
+		return Wix, nil
+	default:
+		return "", fmt.Errorf("unrecognized constant: %q", s)
+	}
+}
+
+// sql.Scanner implementation
+func (p *Platform) Scan(src any) error {
+	var s string
+	switch v := src.(type) {
+	case string:
+		s = v
+	case byte:
+		s = string(v)
+	default:
+		return fmt.Errorf("unsupported type: %T: %v", src, src)
+	}
+
+	dst, err := NewPlatform(s)
+	if err == nil {
+		*p = dst
+	}
+
+	return err
+}
+
+// sql/driver.Valuer implementation
+func (p Platform) Value() (any, error) {
+	return string(p), nil
+}