import { utf8ToBytes, randomBytes, compareBytes } from '@ldclabs/cose-ts/utils'
import { Validator, Claims, withCWTTag } from '@ldclabs/cose-ts/cwt'
import { Ed25519Key } from '@ldclabs/cose-ts/ed25519'
import { Sign1Message } from '@ldclabs/cose-ts/sign1'

// get key
const privKey = Ed25519Key.generate()
// const privKey = Ed25519Key.fromSecret(32_bytes_secret)
const pubKey = privKey.public()
// const pubKey = Ed25519Key.fromPublic(32_bytes_public)

const externalData = utf8ToBytes('@ldclabs/cose-ts') // optional

// signing
const claims = new Claims()
claims.iss = 'ldclabs'
claims.aud = 'cose-ts'
claims.sub = 'tester'
claims.exp = Math.floor(Date.now() / 1000) + 3600
claims.cti = randomBytes(16)

const cwtMsg = new Sign1Message(claims.toBytes())
const cwtData = cwtMsg.toBytes(privKey, externalData)
// const cwtDataWithTag = withCWTTag(cwtData)

// verifying
const cwtMsg2 = Sign1Message.fromBytes(
  pubKey,
  cwtData, // or cwtDataWithTag
  externalData
)
const claims2 = Claims.fromBytes(cwtMsg2.payload)
const validator = new Validator({ expectedIssuer: 'ldclabs' })
validator.validate(claims2)
assert.equal(claims2.iss, claims.iss)
assert.equal(claims2.aud, claims.aud)
assert.equal(claims2.sub, claims.sub)
assert.equal(claims2.exp, claims.exp)
assert.equal(compareBytes(claims2.cti, claims.cti), 0)