package enums

import "encoding/json"

type Enum interface {
	Valid() bool
	ValuesAny() []any
	ValuesMeta() []EnumMetaValue
	VarName() string
	TypeName() string
	PackageName() string
}

type StringEnum interface {
	Enum
	String() string
}

type DescriptionEnum interface {
	Enum
	Description() string
	DescriptionMeta() EnumDescriptionMetaValue
}

type EnumMetaValue struct {
	VarName     string  `json:"varName"`
	Value       Enum    `json:"value"`
	Description *string `json:"description"`
}

type EnumDescriptionMetaValue struct {
	VarName     string `json:"varName"`
	Value       Enum   `json:"value"`
	Description string `json:"description"`
}

type EnumMetaDataValue struct {
	VarName     string  `json:"varName"`
	Value       Enum    `json:"value"`
	Description *string `json:"description"`

	Data map[string]any `json:"-"` //handled by MarshalJSON
}

func (v EnumMetaDataValue) MarshalJSON() ([]byte, error) {
	m := make(map[string]any, 8)

	for k, dv := range v.Data {
		m[k] = dv
	}

	m["varName"] = v.VarName
	m["value"] = v.Value
	m["description"] = v.Description

	return json.Marshal(m)
}