#!/usr/bin/env python2
# Copyright (c) 2014 The Bitcoin Core developers
# Distributed under the GPLv3 software license, see the accompanying
# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html

from test_framework.test_framework import BitcoinTestFramework
from test_framework.authproxy import JSONRPCException
from test_framework.util import assert_equal, initialize_chain_clean, \
    start_nodes, start_node, connect_nodes_bi, bitcoind_processes


class ZapWalletTXesTest (BitcoinTestFramework):

    def setup_chain(self):
        print("Initializing test directory "+self.options.tmpdir)
        initialize_chain_clean(self.options.tmpdir, 3)

    def setup_network(self, split=False):
        self.nodes = start_nodes(3, self.options.tmpdir)
        connect_nodes_bi(self.nodes,0,1)
        connect_nodes_bi(self.nodes,1,2)
        connect_nodes_bi(self.nodes,0,2)
        self.is_network_split=False
        self.sync_all()

    def run_test (self):
        print "Mining blocks..."
        self.nodes[0].generate(4)
        self.sync_all()
        self.nodes[1].generate(101)
        self.sync_all()

        assert_equal(self.nodes[0].getbalance(), 40)

        txid0 = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 11)
        txid1 = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 10)
        self.sync_all()
        self.nodes[0].generate(1)
        self.sync_all()

        txid2 = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 11)
        txid3 = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 5)

        tx0 = self.nodes[0].gettransaction(txid0)
        assert_equal(tx0['txid'], txid0) # tx0 must be available (confirmed)

        tx1 = self.nodes[0].gettransaction(txid1)
        assert_equal(tx1['txid'], txid1) # tx1 must be available (confirmed)

        tx2 = self.nodes[0].gettransaction(txid2)
        assert_equal(tx2['txid'], txid2) # tx2 must be available (unconfirmed)

        tx3 = self.nodes[0].gettransaction(txid3)
        assert_equal(tx3['txid'], txid3) # tx3 must be available (unconfirmed)

        # restart zcashd
        self.nodes[0].stop()
        bitcoind_processes[0].wait()
        self.nodes[0] = start_node(0,self.options.tmpdir)

        tx3 = self.nodes[0].gettransaction(txid3)
        assert_equal(tx3['txid'], txid3) # tx must be available (unconfirmed)

        self.nodes[0].stop()
        bitcoind_processes[0].wait()

        # restart zcashd with zapwallettxes
        self.nodes[0] = start_node(0,self.options.tmpdir, ["-zapwallettxes=1"])

        aException = False
        try:
            tx3 = self.nodes[0].gettransaction(txid3)
        except JSONRPCException,e:
            print e
            aException = True

        assert_equal(aException, True) # there must be a expection because the unconfirmed wallettx0 must be gone by now

        tx0 = self.nodes[0].gettransaction(txid0)
        assert_equal(tx0['txid'], txid0) # tx0 (confirmed) must still be available because it was confirmed


if __name__ == '__main__':
    ZapWalletTXesTest().main()