var Privkey = require('../lib/privkey');
var base58check = require('../lib/base58check');
var BN = require('../lib/bn');
var Point = require('../lib/point');
var should = require('chai').should();

describe('Privkey', function() {
  var hex = '96c132224121b509b7d0a16245e957d9192609c5637c6228311287b1be21627a';
  var buf = new Buffer(hex, 'hex');
  var enctestnet = 'cSdkPxkAjA4HDr5VHgsebAPDEh9Gyub4HK8UJr2DFGGqKKy4K5sG';
  var enctu = '92jJzK4tbURm1C7udQXxeCBvXHoHJstDXRxAMouPG1k1XUaXdsu';
  var encmainnet = 'L2Gkw3kKJ6N24QcDuH4XDqt9cTqsKTVNDGz1CRZhk9cq4auDUbJy';
  var encmu = '5JxgQaFM1FMd38cd14e3mbdxsdSa9iM2BV6DHBYsvGzxkTNQ7Un';
  
  it('should create an empty private key', function() {
    var privkey = new Privkey();
    should.exist(privkey);
  });

  it('should create a 0 private key with this convenience method', function() {
    var bn = BN(0);
    var privkey = new Privkey(bn);
    privkey.bn.toString().should.equal(bn.toString());
  });

  it('should create a mainnet private key', function() {
    var privkey = new Privkey({bn: BN.fromBuffer(buf), networkstr: 'mainnet', compressed: true});
    privkey.toString().should.equal(encmainnet);
  });

  it('should create an uncompressed testnet private key', function() {
    var privkey = new Privkey({bn: BN.fromBuffer(buf), networkstr: 'testnet', compressed: false});
    privkey.toString().should.equal(enctu);
  });

  it('should create an uncompressed mainnet private key', function() {
    var privkey = new Privkey({bn: BN.fromBuffer(buf), networkstr: 'mainnet', compressed: false});
    privkey.toString().should.equal(encmu);
  });

  describe('#set', function() {
    
    it('should set bn', function() {
      should.exist(Privkey().set({bn: BN.fromBuffer(buf)}).bn);
    });

  });

  describe('#fromRandom', function() {
    
    it('should set bn gt 0 and lt n, and should be compressed', function() {
      var privkey = Privkey().fromRandom();
      privkey.bn.gt(BN(0)).should.equal(true);
      privkey.bn.lt(Point.getN()).should.equal(true);
      privkey.compressed.should.equal(true);
    });

  });

  describe('#fromWIF', function() {

    it('should parse this compressed testnet address correctly', function() {
      var privkey = new Privkey();
      privkey.fromWIF(encmainnet);
      privkey.toWIF().should.equal(encmainnet);
    });

  });

  describe('#toWIF', function() {

    it('should parse this compressed testnet address correctly', function() {
      var privkey = new Privkey();
      privkey.fromWIF(enctestnet);
      privkey.toWIF().should.equal(enctestnet);
    });

  });

  describe('#fromString', function() {

    it('should parse this uncompressed testnet address correctly', function() {
      var privkey = new Privkey();
      privkey.fromString(enctu);
      privkey.toWIF().should.equal(enctu);
    });

  });

  describe('#toString', function() {

    it('should parse this uncompressed mainnet address correctly', function() {
      var privkey = new Privkey();
      privkey.fromString(encmu);
      privkey.toString().should.equal(encmu);
    });

  });

});