text: 'use strict'
  
  var should = require('chai').should()
  var expect = require('chai').expect
  
  var bsv = require('..')
  var Point = bsv.crypto.Point
  var BN = bsv.crypto.BN
  var PublicKey = bsv.PublicKey
  var PrivateKey = bsv.PrivateKey
  var Address = bsv.Address
  var Networks = bsv.Networks
  
  /* jshint maxlen: 200 */
  
  describe('PublicKey', function () {
    /* jshint maxstatements: 30 */
  
    var invalidPoint = '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
  
    describe('validating errors on creation', function () {
      it('errors if data is missing', function () {
        (function () {
          return new PublicKey()
        }).should.throw('First argument is required, please include public key data.')
      })
  
      it('errors if an invalid point is provided', function () {
        (function () {
          return new PublicKey(invalidPoint)
        }).should.throw('Point does not lie on the curve')
      })
  
      it('errors if a point not on the secp256k1 curve is provided', function () {
        (function () {
          return new PublicKey(new Point(1000, 1000))
        }).should.throw('Point does not lie on the curve')
      })
  
      it('errors if the argument is of an unrecognized type', function () {
        (function () {
          return new PublicKey(new Error())
        }).should.throw('First argument is an unrecognized data format.')
      })
    })
  
    describe('instantiation', function () {
      it('from a private key', function () {
        var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff'
        var pubhex = '02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc'
        var privkey = new PrivateKey(new BN(Buffer.from(privhex, 'hex')))
        var pk = new PublicKey(privkey)
        pk.toString().should.equal(pubhex)
      })
  
      it('problematic secp256k1 public keys', function () {
        var knownKeys = [
          {
            wif: 'KzsjKq2FVqVuQv2ueHVFuB65A9uEZ6S1L6F8NuokCrE3V3kE3Ack',
            priv: '6d1229a6b24c2e775c062870ad26bc261051e0198c67203167273c7c62538846',
            pub: '03d6106302d2698d6a41e9c9a114269e7be7c6a0081317de444bb2980bf9265a01',
            pubx: 'd6106302d2698d6a41e9c9a114269e7be7c6a0081317de444bb2980bf9265a01',
            puby: 'e05fb262e64b108991a29979809fcef9d3e70cafceb3248c922c17d83d66bc9d'
          },
          {
            wif: 'L5MgSwNB2R76xBGorofRSTuQFd1bm3hQMFVf3u2CneFom8u1Yt7G',
            priv: 'f2cc9d2b008927db94b89e04e2f6e70c180e547b3e5e564b06b8215d1c264b53',
            pub: '03e275faa35bd1e88f5df6e8f9f6edb93bdf1d65f4915efc79fd7a726ec0c21700',
            pubx: 'e275faa35bd1e88f5df6e8f9f6edb93bdf1d65f4915efc79fd7a726ec0c21700',
            puby: '367216cb35b086e6686d69dddd822a8f4d52eb82ac5d9de18fdcd9bf44fa7df7'
          }
        ]
  
        for (var i = 0; i < knownKeys.length; i++) {
          var privkey = new PrivateKey(knownKeys[i].wif)
          var pubkey = privkey.toPublicKey()
          pubkey.toString().should.equal(knownKeys[i].pub)
          pubkey.point.x.toString('hex').should.equal(knownKeys[i].pubx)
          pubkey.point.y.toString('hex').should.equal(knownKeys[i].puby)
        }
      })
  
      it('from a compressed public key', function () {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        var publicKey = new PublicKey(publicKeyHex)
        publicKey.toString().should.equal(publicKeyHex)
      })
  
      it('from another publicKey', function () {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        var publicKey = new PublicKey(publicKeyHex)
        var publicKey2 = new PublicKey(publicKey)
        publicKey.should.equal(publicKey2)
      })
  
      it('sets the network to defaultNetwork if none provided', function () {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        var publicKey = new PublicKey(publicKeyHex)
        publicKey.network.should.equal(Networks.defaultNetwork)
      })
  
      it('from a hex encoded DER string', function () {
        var pk = new PublicKey('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        should.exist(pk.point)
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
      })
  
      it('from a hex encoded DER buffer', function () {
        var pk = new PublicKey(Buffer.from('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'))
        should.exist(pk.point)
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
      })
  
      it('from a point', function () {
        var p = new Point('86a80a5a2bfc48dddde2b0bd88bd56b0b6ddc4e6811445b175b90268924d7d48',
          '3b402dfc89712cfe50963e670a0598e6b152b3cd94735001cdac6794975d3afd')
        var a = new PublicKey(p)
        should.exist(a.point)
        a.point.toString().should.equal(p.toString())
        var c = new PublicKey(p)
        should.exist(c.point)
        c.point.toString().should.equal(p.toString())
      })
    })
  
    describe('#getValidationError', function () {
      it('should recieve an invalid point error', function () {
        var error = PublicKey.getValidationError(invalidPoint)
        should.exist(error)
        error.message.should.equal('Point does not lie on the curve')
      })
  
      it('should recieve a boolean as false', function () {
        var valid = PublicKey.isValid(invalidPoint)
        valid.should.equal(false)
      })
  
      it('should recieve a boolean as true for uncompressed', function () {
        var valid = PublicKey.isValid('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        valid.should.equal(true)
      })
  
      it('should recieve a boolean as true for compressed', function () {
        var valid = PublicKey.isValid('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        valid.should.equal(true)
      })
    })
  
    describe('#fromPoint', function () {
      it('should instantiate from a point', function () {
        var p = new Point('86a80a5a2bfc48dddde2b0bd88bd56b0b6ddc4e6811445b175b90268924d7d48',
          '3b402dfc89712cfe50963e670a0598e6b152b3cd94735001cdac6794975d3afd')
        var b = PublicKey.fromPoint(p)
        should.exist(b.point)
        b.point.toString().should.equal(p.toString())
      })
  
      it('should error because paramater is not a point', function () {
        (function () {
          PublicKey.fromPoint(new Error())
        }).should.throw('First argument must be an instance of Point.')
      })
    })
  
    describe('#json/object', function () {
      it('should input/ouput json', function () {
        var json = JSON.stringify({
          x: '1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a',
          y: '7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341',
          compressed: false
        })
        var pubkey = new PublicKey(JSON.parse(json))
        JSON.stringify(pubkey).should.deep.equal(json)
      })
  
      it('fails if "y" is not provided', function () {
        expect(function () {
          return new PublicKey({
            x: '1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
          })
        }).to.throw()
      })
  
      it('fails if invalid JSON is provided', function () {
        expect(function () {
          return PublicKey._transformJSON('¹')
        }).to.throw()
      })
  
      it('works for X starting with 0x00', function () {
        var a = new PublicKey('030589ee559348bd6a7325994f9c8eff12bd5d73cc683142bd0dd1a17abc99b0dc')
        var b = new PublicKey('03' + a.toObject().x)
        b.toString().should.equal(a.toString())
      })
    })
  
    describe('#fromPrivateKey', function () {
      it('should make a public key from a privkey', function () {
        should.exist(PublicKey.fromPrivateKey(PrivateKey.fromRandom()))
      })
  
      it('should error because not an instance of privkey', function () {
        (function () {
          PublicKey.fromPrivateKey(new Error())
        }).should.throw('Must be an instance of PrivateKey')
      })
    })
  
    describe('#fromBuffer', function () {
      it('should parse this uncompressed public key', function () {
        var pk = PublicKey.fromBuffer(Buffer.from('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'))
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
  
      it('should parse this compressed public key', function () {
        var pk = PublicKey.fromBuffer(Buffer.from('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
  
      it('should throw an error on this invalid public key', function () {
        (function () {
          PublicKey.fromBuffer(Buffer.from('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        }).should.throw()
      })
  
      it('should throw error because not a buffer', function () {
        (function () {
          PublicKey.fromBuffer('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        }).should.throw('Must be a buffer of DER encoded public key')
      })
  
      it('should throw error because buffer is the incorrect length', function () {
        (function () {
          PublicKey.fromBuffer(Buffer.from('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a34112', 'hex'))
        }).should.throw('Length of x and y must be 32 bytes')
      })
    })
  
    describe('#fromDER', function () {
      it('should parse this uncompressed public key', function () {
        var pk = PublicKey.fromDER(Buffer.from('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'))
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
  
      it('should parse this compressed public key', function () {
        var pk = PublicKey.fromDER(Buffer.from('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
  
      it('should throw an error on this invalid public key', function () {
        (function () {
          PublicKey.fromDER(Buffer.from('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        }).should.throw()
      })
    })
  
    describe('#fromString', function () {
      it('should parse this known valid public key', function () {
        var pk = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
    })
  
    describe('#fromHex', function () {
      it('should parse this known valid public key', function () {
        var pk = PublicKey.fromHex('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
    })
  
    describe('#fromX', function () {
      it('should create this known public key', function () {
        var x = BN.fromBuffer(Buffer.from('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        var pk = PublicKey.fromX(true, x)
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
  
      it('should error because odd was not included as a param', function () {
        var x = BN.fromBuffer(Buffer.from('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        (function () {
          return PublicKey.fromX(null, x)
        }).should.throw('Must specify whether y is odd or not (true or false)')
      })
    })
  
    describe('#toBuffer', function () {
      it('should return this compressed DER format', function () {
        var x = BN.fromBuffer(Buffer.from('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        var pk = PublicKey.fromX(true, x)
        pk.toBuffer().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
      })
  
      it('should return this uncompressed DER format', function () {
        var x = BN.fromBuffer(Buffer.from('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        var pk = PublicKey.fromX(true, x)
        pk.toBuffer().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
      })
    })
  
    describe('#toDER', function () {
      it('should return this compressed DER format', function () {
        var x = BN.fromBuffer(Buffer.from('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'))
        var pk = PublicKey.fromX(true, x)
        pk.toDER().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
      })
  
      it('should return this uncompressed DER format', function () {
        var pk = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        pk.toDER().toString('hex').should.equal('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
      })
    })
  
    describe('#toAddress', function () {
      it('should output this known mainnet address correctly', function () {
        var pk = new PublicKey('03c87bd0e162f26969da8509cafcb7b8c8d202af30b928c582e263dd13ee9a9781')
        var address = pk.toAddress('livenet')
        address.toString().should.equal('1A6ut1tWnUq1SEQLMr4ttDh24wcbJ5o9TT')
      })
  
      it('should output this known testnet address correctly', function () {
        var pk = new PublicKey('0293126ccc927c111b88a0fe09baa0eca719e2a3e087e8a5d1059163f5c566feef')
        var address = pk.toAddress('testnet')
        address.toString().should.equal('mtX8nPZZdJ8d3QNLRJ1oJTiEi26Sj6LQXS')
      })
    })
  
    describe('hashes', function () {
      it('should pass this test', function () {
        // wif private key, address
        // see: https://github.com/bitcoin/bitcoin/blob/master/src/test/key_tests.cpp#L20
        var data = [
          ['5HxWvvfubhXpYYpS3tJkw6fq9jE9j18THftkZjHHfmFiWtmAbrj', '1QFqqMUD55ZV3PJEJZtaKCsQmjLT6JkjvJ'],
          ['5KC4ejrDjv152FGwP386VD1i2NYc5KkfSMyv1nGy1VGDxGHqVY3', '1F5y5E5FMc5YzdJtB9hLaUe43GDxEKXENJ'],
          ['Kwr371tjA9u2rFSMZjTNun2PXXP3WPZu2afRHTcta6KxEUdm1vEw', '1NoJrossxPBKfCHuJXT4HadJrXRE9Fxiqs'],
          ['L3Hq7a8FEQwJkW1M2GNKDW28546Vp5miewcCzSqUD9kCAXrJdS3g', '1CRj2HyM1CXWzHAXLQtiGLyggNT9WQqsDs']
        ]
  
        data.forEach(function (d) {
          var publicKey = PrivateKey.fromWIF(d[0]).toPublicKey()
          var address = Address.fromString(d[1])
          address.hashBuffer.should.deep.equal(publicKey._getID())
        })
      })
    })
  
    describe('#toString', function () {
      it('should print this known public key', function () {
        var hex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        var pk = PublicKey.fromString(hex)
        pk.toString().should.equal(hex)
      })
    })
  
    describe('#toHex', function () {
      it('should print this known public key', function () {
        var hex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        var pk = PublicKey.fromHex(hex)
        pk.toHex().should.equal(hex)
      })
    })
  
    describe('#inspect', function () {
      it('should output known uncompressed pubkey for console', function () {
        var pubkey = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341')
        pubkey.inspect().should.equal('<PublicKey: 041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341, uncompressed>')
      })
  
      it('should output known compressed pubkey for console', function () {
        var pubkey = PublicKey.fromString('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a')
        pubkey.inspect().should.equal('<PublicKey: 031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a>')
      })
  
      it('should output known compressed pubkey with network for console', function () {
        var privkey = PrivateKey.fromWIF('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m')
        var pubkey = new PublicKey(privkey)
        pubkey.inspect().should.equal('<PublicKey: 03c87bd0e162f26969da8509cafcb7b8c8d202af30b928c582e263dd13ee9a9781>')
      })
    })
  
    describe('#validate', function () {
      it('should not have an error if pubkey is valid', function () {
        var hex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
        expect(function () {
          return PublicKey.fromString(hex)
        }).to.not.throw()
      })
  
      it('should throw an error if pubkey is invalid', function () {
        var hex = '041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a0000000000000000000000000000000000000000000000000000000000000000';
        (function () {
          return PublicKey.fromString(hex)
        }).should.throw('Invalid y value for curve.')
      })
  
      it('should throw an error if pubkey is invalid', function () {
        var hex = '041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a00000000000000000000000000000000000000000000000000000000000000FF';
        (function () {
          return PublicKey.fromString(hex)
        }).should.throw('Invalid y value for curve.')
      })
  
      it('should throw an error if pubkey is infinity', function () {
        (function () {
          return new PublicKey(Point.getG().mul(Point.getN()))
        }).should.throw('Point cannot be equal to Infinity')
      })
    })
  })
  