@@ 0,0 1,80 @@
+package formguard
+
+import (
+ "fmt"
+ "html/template"
+
+ "github.com/labstack/echo/v4"
+ "hg.code.netlandish.com/~netlandish/gobwebs/validate"
+)
+
+// Form ...
+type Form struct {
+ AntiSpamField int
+ MinValue int
+ FieldName string
+}
+
+// Validate ...
+func (f *Form) Validate(c echo.Context) error {
+ if f.FieldName == "" {
+ f.FieldName = "antispam"
+ }
+
+ errs := echo.FormFieldBinder(c).
+ FailFast(false).
+ Int(f.FieldName, &f.AntiSpamField).
+ BindErrors()
+ if errs != nil {
+ return validate.GetInputErrors(errs)
+ }
+
+ if err := c.Validate(f); err != nil {
+ return err
+ }
+
+ if f.MinValue == 0 {
+ f.MinValue = 5
+ }
+
+ if f.AntiSpamField < f.MinValue {
+ return validate.InputErrors{"_global_": []string{"This operation is forbbiden."}}
+ }
+
+ return nil
+}
+
+// ScriptJS ...
+func ScriptJS(names ...string) template.HTML {
+ var nameList string
+ for _, name := range names {
+ nameList += fmt.Sprintf("'id_%s',", name)
+ }
+ script := fmt.Sprintf(`<script>
+ var update_field_value = function(field_id) {
+ if (document.getElementById(field_id)) {
+ a = document.getElementById(field_id);
+ if (isNaN(a.value) == true) {
+ a.value = 0;
+ } else {
+ a.value = parseInt(a.value) + 1;
+ }
+ }
+ }
+ let field_ids = [%s];
+ var anti_spam = function() {
+ for (var i=0, l=field_ids.length; i<l; i++) {
+ update_field_value(field_ids[i]);
+ }
+ setTimeout("anti_spam()", 1000);
+ }
+ anti_spam();
+ </script>`, nameList)
+ return template.HTML(script)
+}
+
+// InputHTML ...
+func InputHTML(name string) template.HTML {
+ input := fmt.Sprintf("<input type='hidden' name='%s' value='0' id='id_%s'/>", name, name)
+ return template.HTML(input)
+}