from decimal import Decimal
from collections import defaultdict
from twisted.trial import unittest
from twisted.internet import threads, defer

from lbrynet.core.Error import InsufficientFundsError
from lbrynet.core.Wallet import Wallet, ReservedPoints, InMemoryStorage

test_metadata = {
'license': 'NASA',
'version': '_0_1_0',
'description': 'test',
'language': 'en',
'author': 'test',
'title': 'test',
'nsfw': False,
'thumbnail': 'test'
}

test_claim_dict = {
    'version':'_0_0_1',
    'claimType':'streamType',
    'stream':{'metadata':test_metadata, 'version':'_0_0_1','source':{'source':'8655f713819344980a9a0d67b198344e2c462c90f813e86f0c63789ab0868031f25c54d0bb31af6658e997e2041806eb','sourceType':'lbry_sd_hash','contentType':'video/mp4','version':'_0_0_1'},
}}


class MocLbryumWallet(Wallet):
    def __init__(self):
        self.wallet_balance = Decimal(10.0)
        self.total_reserved_points = Decimal(0.0)
        self.queued_payments = defaultdict(Decimal)
        self._storage = InMemoryStorage()

    def get_name_claims(self):
        return threads.deferToThread(lambda: [])

    def _save_name_metadata(self, name, claim_outpoint, sd_hash):
        return defer.succeed(True)


class WalletTest(unittest.TestCase):

    def test_failed_send_name_claim(self):
        def not_enough_funds_send_name_claim(self, name, val, amount):
            claim_out = {'success':False, 'reason':'Not enough funds'}
            return claim_out

        MocLbryumWallet._send_name_claim = not_enough_funds_send_name_claim
        wallet = MocLbryumWallet()
        d = wallet.claim_name('test', 1, test_claim_dict)
        self.assertFailure(d, Exception)
        return d

    def test_successful_send_name_claim(self):
        expected_claim_out = {
            "claim_id": "f43dc06256a69988bdbea09a58c80493ba15dcfa",
            "fee": "0.00012",
            "nout": 0,
            "success": True,
            "txid": "6f8180002ef4d21f5b09ca7d9648a54d213c666daf8639dc283e2fd47450269e"
         }

        def check_out(claim_out):
            self.assertTrue('success' not in claim_out)
            self.assertEqual(expected_claim_out['claim_id'], claim_out['claim_id'])
            self.assertEqual(expected_claim_out['fee'], claim_out['fee'])
            self.assertEqual(expected_claim_out['nout'], claim_out['nout'])
            self.assertEqual(expected_claim_out['txid'], claim_out['txid'])

        def success_send_name_claim(self, name, val, amount, certificate_id=None):
            return expected_claim_out

        MocLbryumWallet._send_name_claim = success_send_name_claim
        wallet = MocLbryumWallet()
        d = wallet.claim_name('test', 1, test_claim_dict)
        d.addCallback(lambda claim_out: check_out(claim_out))
        return d

    def test_failed_support(self):
        def failed_support_claim(self, name, claim_id, amount):
            claim_out = {'success':False, 'reason':'Not enough funds'}
            return threads.deferToThread(lambda: claim_out)
        MocLbryumWallet._support_claim = failed_support_claim
        wallet = MocLbryumWallet()
        d = wallet.support_claim('test', "f43dc06256a69988bdbea09a58c80493ba15dcfa", 1)
        self.assertFailure(d,Exception)
        return d

    def test_succesful_support(self):
        expected_support_out = {
            "fee": "0.000129",
            "nout": 0,
            "success": True,
            "txid": "11030a76521e5f552ca87ad70765d0cc52e6ea4c0dc0063335e6cf2a9a85085f"
        }

        def check_out(claim_out):
            self.assertTrue('success' not in claim_out)
            self.assertEqual(expected_support_out['fee'], claim_out['fee'])
            self.assertEqual(expected_support_out['nout'], claim_out['nout'])
            self.assertEqual(expected_support_out['txid'], claim_out['txid'])

        def success_support_claim(self, name, val, amount):
            return threads.deferToThread(lambda: expected_support_out)
        MocLbryumWallet._support_claim = success_support_claim
        wallet = MocLbryumWallet()
        d = wallet.support_claim('test', "f43dc06256a69988bdbea09a58c80493ba15dcfa", 1)
        d.addCallback(lambda claim_out: check_out(claim_out))
        return d

    def test_failed_abandon(self):
        def failed_abandon_claim(self, claim_outpoint):
            claim_out = {'success':False, 'reason':'Not enough funds'}
            return threads.deferToThread(lambda: claim_out)
        MocLbryumWallet._abandon_claim = failed_abandon_claim
        wallet = MocLbryumWallet()
        d = wallet.abandon_claim("f43dc06256a69988bdbea09a58c80493ba15dcfa")
        self.assertFailure(d, Exception)
        return d

    def test_successful_abandon(self):
        expected_abandon_out = {
            "fee": "0.000096",
            "success": True,
            "txid": "0578c161ad8d36a7580c557d7444f967ea7f988e194c20d0e3c42c3cabf110dd"
        }

        def check_out(claim_out):
            self.assertTrue('success' not in claim_out)
            self.assertEqual(expected_abandon_out['fee'], claim_out['fee'])
            self.assertEqual(expected_abandon_out['txid'], claim_out['txid'])

        def success_abandon_claim(self, claim_outpoint):
            return threads.deferToThread(lambda: expected_abandon_out)

        MocLbryumWallet._abandon_claim = success_abandon_claim
        wallet = MocLbryumWallet()
        d = wallet.abandon_claim("f43dc06256a69988bdbea09a58c80493ba15dcfa")
        d.addCallback(lambda claim_out: check_out(claim_out))
        return d

    def test_point_reservation_and_balance(self):
        # check that point reservations and cancellation changes the balance
        # properly
        def update_balance():
            return defer.succeed(5)
        wallet = MocLbryumWallet()
        wallet._update_balance = update_balance
        d = wallet.update_balance()
        # test point reservation
        d.addCallback(lambda _: self.assertEqual(5, wallet.get_balance()))
        d.addCallback(lambda _: wallet.reserve_points('testid',2))
        d.addCallback(lambda _: self.assertEqual(3, wallet.get_balance()))
        d.addCallback(lambda _: self.assertEqual(2, wallet.total_reserved_points))
        # test reserved points cancellation
        d.addCallback(lambda _: wallet.cancel_point_reservation(ReservedPoints('testid',2)))
        d.addCallback(lambda _: self.assertEqual(5, wallet.get_balance()))
        d.addCallback(lambda _: self.assertEqual(0, wallet.total_reserved_points))
        # test point sending
        d.addCallback(lambda _: wallet.reserve_points('testid',2))
        d.addCallback(lambda reserve_points: wallet.send_points_to_address(reserve_points,1))
        d.addCallback(lambda _: self.assertEqual(3, wallet.get_balance()))
        # test failed point reservation
        d.addCallback(lambda _: wallet.reserve_points('testid',4))
        d.addCallback(lambda out: self.assertEqual(None,out))
        return d

    def test_point_reservation_and_claim(self):
        # check that claims take into consideration point reservations
        def update_balance():
            return defer.succeed(5)
        wallet = MocLbryumWallet()
        wallet._update_balance = update_balance
        d = wallet.update_balance()
        d.addCallback(lambda _: self.assertEqual(5, wallet.get_balance()))
        d.addCallback(lambda _: wallet.reserve_points('testid',2))
        d.addCallback(lambda _: wallet.claim_name('test', 4, test_claim_dict))
        self.assertFailure(d,InsufficientFundsError)
        return d

    def test_point_reservation_and_support(self):
        # check that supports take into consideration point reservations
        def update_balance():
            return defer.succeed(5)
        wallet = MocLbryumWallet()
        wallet._update_balance = update_balance
        d = wallet.update_balance()
        d.addCallback(lambda _: self.assertEqual(5, wallet.get_balance()))
        d.addCallback(lambda _: wallet.reserve_points('testid',2))
        d.addCallback(lambda _: wallet.support_claim('test', "f43dc06256a69988bdbea09a58c80493ba15dcfa", 4))
        self.assertFailure(d,InsufficientFundsError)
        return d