require 'mastercoin-ruby'

describe Mastercoin::SellingOffer do

  context "Encoding and decoding public keys" do
    before do
      @selling_offer = Mastercoin::SellingOffer.new(currency_id: 2, amount: 1e8.to_i, bitcoin_amount: 1e6.to_i, time_limit: 6, transaction_fee: 1e5.to_i)
    end

    it "Should encode to exactly two public keys" do
      keys = @selling_offer.encode_to_compressed_public_key("1J2svn2GxYx9LPrpCLFikmzn9kkrXBrk8B")
      keys.count.should eq(2)
    end

    it "Should be backward compatible with existing transactions in the blockchain" do
      selling = Mastercoin::SellingOffer.decode_from_compressed_public_key(["0226cb0561011d9045f6371cb09086ba7148d9942328bcf1dd78cb6edb35ccdda9", "022eac137ab02d826df0af54e92a352945c9892df6cd77f1a7c390fc82c8b0edea"], "13NRX88EZbS5q81x6XFrTECzrciPREo821")
      selling.amount.should be(1e8.to_i)
      selling.currency_id.should be(2)
      selling.time_limit.should be(12)
      selling.bitcoin_amount.should be(1000)
      selling.transaction_fee.should be(100000)
    end

    it "Should encode valid public keys" do
      keys = @selling_offer.encode_to_compressed_public_key("1J2svn2GxYx9LPrpCLFikmzn9kkrXBrk8B")
      keys.first[0..-3].should eq("02d52c390e46f1110410078a9db14d124206924666fb10a5e8dbf9cc2e2ecde3")
      keys.last[0..-3].should eq("02020f44668806819e67a030e82a6af98376dac1065d7fe533daf251d43aa836")
      Mastercoin::Util.valid_ecdsa_point?(keys.first).should eq(true)
      Mastercoin::Util.valid_ecdsa_point?(keys.last).should eq(true)
    end

    it "Should decode public keys into a valid transaction" do
      keys = @selling_offer.encode_to_compressed_public_key("1J2svn2GxYx9LPrpCLFikmzn9kkrXBrk8B")
      offer_two = Mastercoin::SellingOffer.decode_from_compressed_public_key(keys, "1J2svn2GxYx9LPrpCLFikmzn9kkrXBrk8B")
      offer_two.amount.should eq(@selling_offer.amount)
      offer_two.bitcoin_amount.should eq(@selling_offer.bitcoin_amount)
      offer_two.currency_id.should eq(@selling_offer.currency_id)
      offer_two.transaction_fee.should be(1e5.to_i)
      offer_two.time_limit.should eq(@selling_offer.time_limit)
    end

    it "Should strip sequence and compressed key format" do
      key = "0300000014000000020000000005f5e10000000000000f424060000000000018"
      Mastercoin::Util.strip_key(key).should eq("00000014000000020000000005f5e10000000000000f424060000000000018")
    end

    it "Should sort keys based on sequence number" do 
      keys = ["0300000014000000020000000005f5e10000000000000f424060000000000018","0200000014000000020000000005f5e10000000000000f424060000000000018", "0100000014000000020000000005f5e10000000000000f424060000000000018"]
      Mastercoin::Util.sort_keys(keys).should eq(["0100000014000000020000000005f5e10000000000000f424060000000000018",
                                                  "0200000014000000020000000005f5e10000000000000f424060000000000018",
                                                   "0300000014000000020000000005f5e10000000000000f424060000000000018"])
    end
  end
end