package feed

//go:generate stringer -linecomment -type=V3UserInteraction

import (
  "encoding/json"
  "fmt"
)

// CVSS v3 user interaction
type V3UserInteraction byte

const (
  V3UINone V3UserInteraction = iota // NONE
  V3UIRequired // REQUIRED
)

// Unmarshal CVSS user interaction from JSON.
func (me *V3UserInteraction) UnmarshalJSON(b []byte) error {
  // decode string, check for error
  var s string
  if err := json.Unmarshal(b, &s); err != nil {
    return err
  }

  // check value
  switch s {
  case "NONE":
    *me = V3UINone
  case "REQUIRED":
    *me = V3UIRequired
  default:
    // return error
    return fmt.Errorf("unknown CVSS v3 user interaction: %s", s)
  }

  // return success
  return nil
}