// NVD JSON feed parser.
package feed

import (
  "encoding/json"
  "github.com/pablotron/cvez/cvss"
)

// CVSS vector
type Vector struct {
  // CVSS vector
  Vector cvss.Vector
}

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

  // parse vector
  vec, err := cvss.NewVector(s)
  if err != nil {
    return err
  }

  // save result
  me.Vector = vec

  // return success
  return nil
}

// Marshal CVSS vector to JSON.
func (me Vector) String() string {
  return me.Vector.String()
}

// Marshal CVSS vector to JSON.
func (me Vector) MarshalJSON() ([]byte, error) {
  return json.Marshal(me.String())
}