rest/conditions.go

package rest

type ConditionOperator string

const (
	OperatorEqual     = "="
	OperatorNotEqual  = "!="
	OperatorMore      = ">"
	OperatorLess      = "<"
	OperatorMoreEqual = ">="
	OperatorLessEqual = "<="
	OperatorLike      = "like"
)

func (s ConditionOperator) IsValid() bool {
	switch s {
	case OperatorEqual:
	case OperatorNotEqual:
	case OperatorMore:
	case OperatorLess:
	case OperatorMoreEqual:
	case OperatorLessEqual:
	case OperatorLike:
	default:
		return false
	}
	return true
}

//////////////////////////////////////////////////////////////////////////////

const (
	LogicEmpty = ""
	LogicOR    = "or"
	LogicAND   = "and"
)

type ConditionLogic string

func (s ConditionLogic) IsValid() bool {
	switch s {
	case LogicEmpty:
	case LogicOR:
	case LogicAND:
	default:
		return false
	}
	return true
}

//////////////////////////////////////////////////////////////////////////////

type Condition struct {
	Field    string
	Logic    ConditionLogic
	Operator ConditionOperator
	Value    any
}

func (s *Condition) IsValid() bool {
	return len(s.Field) > 0 && s.Logic.IsValid() && s.Operator.IsValid()
}

//////////////////////////////////////////////////////////////////////////////

type ConditionList []*Condition

func (s *ConditionList) FieldExists(name string) bool {
	for _, v := range *s {
		if v.Field == name {
			return true
		}
	}
	return false
}

func (s *ConditionList) FieldsRemove(toRemove []string) {
	toRemoveMap := make(map[string]struct{})
	for _, item := range toRemove {
		toRemoveMap[item] = struct{}{}
	}
	var result ConditionList
	for _, item := range *s {
		if _, found := toRemoveMap[item.Field]; !found {
			result = append(result, item)
		}
	}
	*s = result
}