package feed

//go:generate stringer -linecomment -type=V2AccessComplexity

import (
  "encoding/json"
  "fmt"
)

// CVSS v2 access complexity
type V2AccessComplexity byte

const (
  V2ACLow V2AccessComplexity = iota // LOW
  V2ACMedium // MEDIUM
  V2ACHigh // HIGH
)

// Unmarshal CVSS V2 access complexity from JSON.
func (me *V2AccessComplexity) 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 "LOW":
    *me = V2ACLow
  case "MEDIUM":
    *me = V2ACMedium
  case "HIGH":
    *me = V2ACHigh
  default:
    // return error
    return fmt.Errorf("unknown CVSS v2 access complexity: %s", s)
  }

  // return success
  return nil
}