package models

import (
	"fmt"
	"io"
	"strconv"
)

// LogImporter describes a model related log importing.
type LogImporter string

const (
	// LogImporterMircLike is a value of LogImporter
	LogImporterMircLike LogImporter = "MircLike"
	// LogImporterForumLog is a value of LogImporter
	LogImporterForumLog LogImporter = "ForumLog"
	// LogImporterForumLog is a value of LogImporter
	LogImporterIrcCloud LogImporter = "IrcCloud"
)

// IsValid returns true if the underlying string is one of the correct values.
func (e LogImporter) IsValid() bool {
	switch e {
	case LogImporterForumLog, LogImporterMircLike, LogImporterIrcCloud:
		return true
	}
	return false
}

func (e LogImporter) String() string {
	return string(e)
}

// UnmarshalGQL unmarshals the underlying graphql value.
func (e *LogImporter) UnmarshalGQL(v interface{}) error {
	str, ok := v.(string)
	if !ok {
		return fmt.Errorf("enums must be strings")
	}

	*e = LogImporter(str)
	if !e.IsValid() {
		return fmt.Errorf("%s is not a valid LogImporter", str)
	}
	return nil
}

// MarshalGQL marshals the underlying graphql value.
func (e LogImporter) MarshalGQL(w io.Writer) {
	fmt.Fprint(w, strconv.Quote(e.String()))
}