Update module github.com/gorilla/schema to v1.3.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

vendor/github.com/gorilla/schema/decoder.go

@@ -84,6 +84,7 @@ func (d *Decoder) Decode(dst interface{}, src map[string][]string) error {
 			errors[path] = UnknownKeyError{Key: path}
 		}
 	}
+	errors.merge(d.setDefaults(t, v))
 	errors.merge(d.checkRequired(t, src))
 	if len(errors) > 0 {
 		return errors
@@ -91,6 +92,76 @@ func (d *Decoder) Decode(dst interface{}, src map[string][]string) error {
 	return nil
 }
 
+//setDefaults sets the default values when the `default` tag is specified,
+//default is supported on basic/primitive types and their pointers,
+//nested structs can also have default tags
+func (d *Decoder) setDefaults(t reflect.Type, v reflect.Value) MultiError {
+	struc := d.cache.get(t)
+	if struc == nil {
+		// unexpect, cache.get never return nil
+		return MultiError{"default-" + t.Name(): errors.New("cache fail")}
+	}
+
+	errs := MultiError{}
+
+	for _, f := range struc.fields {
+		vCurrent := v.FieldByName(f.name)
+
+		if vCurrent.Type().Kind() == reflect.Struct && f.defaultValue == "" {
+			errs.merge(d.setDefaults(vCurrent.Type(), vCurrent))
+		} else if isPointerToStruct(vCurrent) && f.defaultValue == "" {
+			errs.merge(d.setDefaults(vCurrent.Elem().Type(), vCurrent.Elem()))
+		}
+
+		if f.defaultValue != "" && f.isRequired {
+			errs.merge(MultiError{"default-" + f.name: errors.New("required fields cannot have a default value")})
+		} else if f.defaultValue != "" && vCurrent.IsZero() && !f.isRequired {
+			if f.typ.Kind() == reflect.Struct {
+				errs.merge(MultiError{"default-" + f.name: errors.New("default option is supported only on: bool, float variants, string, unit variants types or their corresponding pointers or slices")})
+			} else if f.typ.Kind() == reflect.Slice {
+				vals := strings.Split(f.defaultValue, "|")
+
+				//check if slice has one of the supported types for defaults
+				if _, ok := builtinConverters[f.typ.Elem().Kind()]; !ok {
+					errs.merge(MultiError{"default-" + f.name: errors.New("default option is supported only on: bool, float variants, string, unit variants types or their corresponding pointers or slices")})
+					continue
+				}
+
+				defaultSlice := reflect.MakeSlice(f.typ, 0, cap(vals))
+				for _, val := range vals {
+					//this check is to handle if the wrong value is provided
+					if convertedVal := builtinConverters[f.typ.Elem().Kind()](val); convertedVal.IsValid() {
+						defaultSlice = reflect.Append(defaultSlice, convertedVal)
+					}
+				}
+				vCurrent.Set(defaultSlice)
+			} else if f.typ.Kind() == reflect.Ptr {
+				t1 := f.typ.Elem()
+
+				if t1.Kind() == reflect.Struct || t1.Kind() == reflect.Slice {
+					errs.merge(MultiError{"default-" + f.name: errors.New("default option is supported only on: bool, float variants, string, unit variants types or their corresponding pointers or slices")})
+				}
+
+				//this check is to handle if the wrong value is provided
+				if convertedVal := convertPointer(t1.Kind(), f.defaultValue); convertedVal.IsValid() {
+					vCurrent.Set(convertedVal)
+				}
+			} else {
+				//this check is to handle if the wrong value is provided
+				if convertedVal := builtinConverters[f.typ.Kind()](f.defaultValue); convertedVal.IsValid() {
+					vCurrent.Set(builtinConverters[f.typ.Kind()](f.defaultValue))
+				}
+			}
+		}
+	}
+
+	return errs
+}
+
+func isPointerToStruct(v reflect.Value) bool {
+	return !v.IsZero() && v.Type().Kind() == reflect.Ptr && v.Elem().Type().Kind() == reflect.Struct
+}
+
 // checkRequired checks whether required fields are empty
 //
 // check type t recursively if t has struct fields.