/* global describe, it */

var assert = require('assert')
var bigi = require('bigi')
var bitcoin = require('../../')
var blockchain = require('./_blockchain')

describe('bitcoinjs-lib (basic)', function () {
  it('can generate a random bitcoin address', function () {
    // for testing only
    function rng () { return new Buffer('zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz') }

    // generate random keyPair
    var keyPair = bitcoin.ECPair.makeRandom({ rng: rng })
    var address = keyPair.getAddress()

    assert.strictEqual(address, '1F5VhMHukdnUES9kfXqzPzMeF1GPHKiF64')
  })

  it('can generate an address from a SHA256 hash', function () {
    var hash = bitcoin.crypto.sha256('correct horse battery staple')
    var d = bigi.fromBuffer(hash)

    var keyPair = new bitcoin.ECPair(d)
    var address = keyPair.getAddress()

    assert.strictEqual(address, '1C7zdTfnkzmr13HfA2vNm5SJYRK6nEKyq8')
  })

  it('can generate a random keypair for alternative networks', function () {
    // for testing only
    function rng () { return new Buffer('zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz') }

    var litecoin = bitcoin.networks.litecoin

    var keyPair = bitcoin.ECPair.makeRandom({ network: litecoin, rng: rng })
    var wif = keyPair.toWIF()
    var address = keyPair.getAddress()

    assert.strictEqual(address, 'LZJSxZbjqJ2XVEquqfqHg1RQTDdfST5PTn')
    assert.strictEqual(wif, 'T7A4PUSgTDHecBxW1ZiYFrDNRih2o7M8Gf9xpoCgudPF9gDiNvuS')
  })

  it('can import an address via WIF', function () {
    var keyPair = bitcoin.ECPair.fromWIF('Kxr9tQED9H44gCmp6HAdmemAzU3n84H3dGkuWTKvE23JgHMW8gct')
    var address = keyPair.getAddress()

    assert.strictEqual(address, '19AAjaTUbRjQCMuVczepkoPswiZRhjtg31')
  })

  it('can create a Transaction', function () {
    var keyPair = bitcoin.ECPair.fromWIF('L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy')
    var tx = new bitcoin.TransactionBuilder()

    tx.addInput('aa94ab02c182214f090e99a0d57021caffd0f195a81c24602b1028b130b63e31', 0)
    tx.addOutput('1Gokm82v6DmtwKEB8AiVhm82hyFSsEvBDK', 15000)
    tx.sign(0, keyPair)

    assert.strictEqual(tx.build().toHex(), '0100000001313eb630b128102b60241ca895f1d0ffca2170d5a0990e094f2182c102ab94aa000000006b483045022100aefbcf847900b01dd3e3debe054d3b6d03d715d50aea8525f5ea3396f168a1fb022013d181d05b15b90111808b22ef4f9ebe701caf2ab48db269691fdf4e9048f4f60121029f50f51d63b345039a290c94bffd3180c99ed659ff6ea6b1242bca47eb93b59fffffffff01983a0000000000001976a914ad618cf4333b3b248f9744e8e81db2964d0ae39788ac00000000')
  })

  it('can create a [complex] Transaction', function (done) {
    this.timeout(30000)

    var network = bitcoin.networks.testnet
    var alice = bitcoin.ECPair.makeRandom({ network: network })
    var bob = bitcoin.ECPair.makeRandom({ network: network })
    var alicesAddress = alice.getAddress()
    var bobsAddress = bob.getAddress()

    blockchain.t.faucet(alicesAddress, 2e4, function (err, unspentA) {
      if (err) return done(err)

      blockchain.t.faucet(bobsAddress, 2e4, function (err, unspentB) {
        if (err) return done(err)

        var tx = new bitcoin.TransactionBuilder(network)
        tx.addInput(unspentA.txId, unspentA.vout)
        tx.addInput(unspentB.txId, unspentB.vout)
        tx.addOutput('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r', 1e4)
        tx.addOutput('2NByiBUaEXrhmqAsg7BbLpcQSAQs1EDwt5w', 1e4)
        tx.sign(0, alice)
        tx.sign(1, bob)

        blockchain.t.transactions.propagate(tx.build().toHex(), done)
      })
    })
  })
})