'use strict';

var should = require('chai').should();
var bitcore = require('..');
var Varint = bitcore.encoding.Varint;
var BufferReader = bitcore.encoding.BufferReader;
var Blockheader = bitcore.Blockheader;
var Block = bitcore.Block;
var Transaction = bitcore.Transaction;

describe('Block', function() {
  
  var txhex = '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';
  var txbuf = new Buffer(txhex, 'hex');
  var magicnum = 0xd9b4bef9;
  var blocksize = 50;
  var bhhex = '0100000005050505050505050505050505050505050505050505050505050505050505050909090909090909090909090909090909090909090909090909090909090909020000000300000004000000';
  var bhbuf = new Buffer(bhhex, 'hex');
  var bh = new Blockheader().fromBuffer(bhbuf);
  var txsvi = new Varint(1);
  var txs = [new Transaction().fromBuffer(txbuf)];
  var block = new Block().set({
    magicnum: magicnum,
    blocksize: blocksize,
    blockheader: bh,
    txsvi: txsvi,
    txs: txs
  });
  var blockhex = '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';
  var blockbuf = new Buffer(blockhex, 'hex');

  var genesishex = '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';
  var genesisbuf = new Buffer(genesishex, 'hex');
  var genesisidhex = '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f';

  it('should make a new block', function() {
    var block = new Block();
    should.exist(block);
    block = Block();
    should.exist(block);
    block = Block(blockbuf);
    block.toBuffer().toString('hex').should.equal(blockhex);
  });

  describe('#set', function() {

    it('should set these known values', function() {
      var block = Block().set({
        magicnum: magicnum,
        blocksize: blocksize,
        blockheader: bh,
        txsvi: txsvi,
        txs: txs
      });
      should.exist(block.magicnum);
      should.exist(block.blocksize);
      should.exist(block.blockheader);
      should.exist(block.txsvi);
      should.exist(block.txs);
    });
    
  });

  describe('#fromJSON', function() {

    it('should set these known values', function() {
      var block = Block().set({
        magicnum: magicnum,
        blocksize: blocksize,
        blockheader: bh.toJSON(),
        txsvi: txsvi.toJSON(),
        txs: [txs[0].toJSON()]
      });
      should.exist(block.magicnum);
      should.exist(block.blocksize);
      should.exist(block.blockheader);
      should.exist(block.txsvi);
      should.exist(block.txs);
    });
    
  });

  describe('#toJSON', function() {

    it('should recover these known values', function() {
      var json = block.toJSON();
      should.exist(json.magicnum);
      should.exist(json.blocksize);
      should.exist(json.blockheader);
      should.exist(json.txsvi);
      should.exist(json.txs);
    });
    
  });

  describe('#fromBuffer', function() {
    
    it('should make a block from this known buffer', function() {
      var block = Block().fromBuffer(blockbuf);
      block.toBuffer().toString('hex').should.equal(blockhex);
    });

  });

  describe('#fromBufferReader', function() {
    
    it('should make a block from this known buffer', function() {
      var block = Block().fromBufferReader(BufferReader(blockbuf));
      block.toBuffer().toString('hex').should.equal(blockhex);
    });

  });

  describe('#toBuffer', function() {
    
    it('should recover a block from this known buffer', function() {
      var block = Block().fromBuffer(blockbuf);
      block.toBuffer().toString('hex').should.equal(blockhex);
    });

  });

  describe('#toBufferWriter', function() {
    
    it('should recover a block from this known buffer', function() {
      var block = Block().fromBuffer(blockbuf);
      block.toBufferWriter().concat().toString('hex').should.equal(blockhex);
    });

  });

  describe('#hash', function() {
    
    it('should return the correct hash of the genesis block', function() {
      var block = Block().fromBuffer(genesisbuf);
      var blockhash = new Buffer(Array.apply([], new Buffer(genesisidhex, 'hex')).reverse());
      block.hash().toString('hex').should.equal(blockhash.toString('hex'));
    });

  });

  describe('#id', function() {
    
    it('should return the correct id of the genesis block', function() {
      var block = Block().fromBuffer(genesisbuf);
      block.id().toString('hex').should.equal(genesisidhex);
    });

  });

});