var assert = require('assert')
var crypto = require('../src/crypto')

var ECKey = require('../src/eckey')
var ECPubKey = require('../src/ecpubkey')

describe('ECKey', function() {
  describe('constructor', function() {
    it('parses hex', function() {
      var priv = '18e14a7b6a307f426a94f8114701e7c8e774e7f9a47e2c2035db29a206321725'
      var pub = '0450863ad64a87ae8a2fe83c1af1a8403cb53f53e486d8511dad8a04887e5b235' +
        '22cd470243453a299fa9e77237716103abc11a1df38855ed6f2ee187e9c582ba6'
      var key = ECKey.fromHex(priv, false)

      assert.equal(key.pub.toHex(), pub)
      assert.equal(key.pub.compressed, false)
    })

    it('parses WIF', function() {
      var priv = '5HwoXVkHoRM8sL2KmNRS217n1g8mPPBomrY7yehCuXC1115WWsh'
      var pub = '044f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0' +
        'f0b704075871aa385b6b1b8ead809ca67454d9683fcf2ba03456d6fe2c4abe2b07f0fbdbb2f1c1'
      var addr = '1MsHWS1BnwMc3tLE8G35UXsS58fKipzB7a'
      var key = ECKey.fromWIF(priv)

      assert.equal(key.pub.compressed, false)
      assert.equal(key.pub.toHex(), pub)
      assert.equal(key.pub.getAddress().toString(), addr)
    })

    it('parses compressed WIF', function() {
      var priv = 'KwntMbt59tTsj8xqpqYqRRWufyjGunvhSyeMo3NTYpFYzZbXJ5Hp'
      var pub = '034f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0f0b704075871aa'
      var addr = '1Q1pE5vPGEEMqRcVRMbtBK842Y6Pzo6nK9'
      var key = ECKey.fromWIF(priv)

      assert.equal(key.pub.compressed, true)
      assert.equal(key.pub.toHex(), pub)
      assert.equal(key.pub.getAddress().toString(), addr)
    })

    it('alternative constructor syntax', function() {
      var priv = 'ca48ec9783cf3ad0dfeff1fc254395a2e403cbbc666477b61b45e31d3b8ab458'
      var pub = '044b12d9d7c77db68388b6ff7c89046174c871546436806bcd80d07c28ea81199' +
        '283fbec990dad6fb98f93f712d50cb874dd717de6a184158d63886dda3090f566'
      var key = ECKey.fromHex(priv, false)

      assert.equal(key.pub.toHex(), pub)
      assert.equal(key.pub.compressed, false)
      assert.equal(key.toHex(), priv)
    })
  })

  describe('signing', function() {
    var hpriv = 'ca48ec9783cf3ad0dfeff1fc254395a2e403cbbc666477b61b45e31d3b8ab458'
    var hcpub = '024b12d9d7c77db68388b6ff7c89046174c871546436806bcd80d07c28ea811992'
    var hash = crypto.sha256('Vires in numeris')

    it('should verify against the private key', function() {
      var priv = ECKey.fromHex(hpriv)
      var signature = priv.sign(hash)

      assert(priv.pub.verify(hash, signature))
    })

    it('should verify against the public key', function() {
      var priv = ECKey.fromHex(hpriv)
      var pub = ECPubKey.fromHex(hcpub, true)
      var signature = priv.sign(hash)

      assert(pub.verify(hash, signature))
    })

    it('should not verify against the wrong private key', function() {
      var priv1 = ECKey.fromHex(hpriv)
      var priv2 = ECKey.fromHex('1111111111111111111111111111111111111111111111111111111111111111')

      var signature = priv1.sign(hash)

      assert(!priv2.pub.verify(hash, signature))
    })
  })
})