package rest

import (
	"git.ali33.ru/fcg-xvii/go-tools/json"
)

type IErrorArgs interface {
	Error() string
	Map() json.Map
}

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

var (
	ErrAlreadyOpened  = "AlreadyOpened"
	ErrNotOpened      = "NotOpened"
	ErrKeyNotExists   = "KeyNotExists"
	ErrKeyInvalidType = "KeyInvalidType"
	ErrNotFound       = "NotFound"
)

func NewErrPrtexpected(field string) IErrorArgs {
	return &Error{
		name: "PtrExpected",
		args: json.Map{
			"field": field,
		},
	}
}

func NewErrFieldRequired(field string) IErrorArgs {
	return &Error{
		name: "FieldRequired",
		args: json.Map{
			"field": field,
		},
	}
}

func NewErrFieldType(field, expectedType, receivedType, message string, index int) IErrorArgs {
	args := json.Map{
		"field":    field,
		"expected": expectedType,
		"received": receivedType,
	}
	if len(message) > 0 {
		args["message"] = message
	}
	if index >= 0 {
		args["index"] = index
	}
	return &Error{
		name: "FieldType",
		args: args,
	}
}

func NewError(name string, args json.Map) IErrorArgs {
	return &Error{
		name: name,
		args: args,
	}
}

func NewErrorMessage(name, text string) IErrorArgs {
	return &Error{
		name: name,
		args: json.Map{
			"message": text,
		},
	}
}

type Error struct {
	name string
	args json.Map
}

func (s *Error) Error() string {
	return s.Map().JSONPrettyString()
}

func (s *Error) Map() json.Map {
	return json.Map{
		"name": s.name,
		"args": s.args,
	}
}