/*
 * Copyright 2010-2011 Ning, Inc.
 *
 * Ning licenses this file to you under the Apache License, version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at:
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package com.ning.billing.junction.blocking;

import java.util.List;
import java.util.UUID;

import org.mockito.Mockito;
import org.testng.Assert;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import com.ning.billing.account.api.Account;
import com.ning.billing.entitlement.api.user.EntitlementUserApi;
import com.ning.billing.entitlement.api.user.EntitlementUserApiException;
import com.ning.billing.entitlement.api.user.Subscription;
import com.ning.billing.entitlement.api.user.SubscriptionBundle;
import com.ning.billing.junction.JunctionTestSuite;
import com.ning.billing.junction.api.Blockable;
import com.ning.billing.junction.api.BlockingApiException;
import com.ning.billing.junction.api.BlockingState;
import com.ning.billing.junction.block.BlockingChecker;
import com.ning.billing.junction.block.DefaultBlockingChecker;
import com.ning.billing.junction.dao.BlockingStateDao;
import com.ning.billing.util.callcontext.InternalCallContext;
import com.ning.billing.util.callcontext.InternalTenantContext;
import com.ning.billing.util.callcontext.TenantContext;
import com.ning.billing.util.clock.Clock;
import com.ning.billing.util.svcapi.entitlement.EntitlementInternalApi;
import com.ning.billing.util.svcapi.junction.DefaultBlockingState;

import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;

public class TestBlockingChecker extends JunctionTestSuite {
    private BlockingState bundleState;
    private BlockingState subscriptionState;
    private BlockingState accountState;

    private final BlockingStateDao dao = new BlockingStateDao() {


        @Override
        public BlockingState getBlockingStateFor(final UUID blockableId, final InternalTenantContext context) {
            if (blockableId == account.getId()) {
                return accountState;
            } else if (blockableId == subscription.getId()) {
                return subscriptionState;
            } else {
                return bundleState;
            }
        }


        @Override
        public List<BlockingState> getBlockingHistoryFor(final UUID overdueableId, final InternalTenantContext context) {
            throw new UnsupportedOperationException();
        }

        @Override
        public <T extends Blockable> void setBlockingState(final BlockingState state, final Clock clock, final InternalCallContext context) {
            throw new UnsupportedOperationException();
        }

    };
    private BlockingChecker checker;
    private Subscription subscription;
    private Account account;
    private SubscriptionBundle bundle;

    @BeforeClass(groups = "fast")
    public void setup() {
        final UUID accountId = UUID.randomUUID();
        account = Mockito.mock(Account.class);
        Mockito.when(account.getId()).thenReturn(accountId);

        bundle = Mockito.mock(SubscriptionBundle.class);
        Mockito.when(bundle.getAccountId()).thenReturn(accountId);
        final UUID bundleId = UUID.randomUUID();
        Mockito.when(bundle.getId()).thenReturn(bundleId);
        Mockito.when(bundle.getExternalKey()).thenReturn("key");

        subscription = Mockito.mock(Subscription.class);
        Mockito.when(subscription.getId()).thenReturn(UUID.randomUUID());
        Mockito.when(subscription.getBundleId()).thenReturn(bundleId);

        final Injector i = Guice.createInjector(new AbstractModule() {
            @Override
            protected void configure() {
                bind(BlockingChecker.class).to(DefaultBlockingChecker.class).asEagerSingleton();

                bind(BlockingStateDao.class).toInstance(dao);


                // Since we re-enabled EntitlementUserApi for Checher we need a binding, that should go eventually
                final EntitlementUserApi entitlementUserApi = Mockito.mock(EntitlementUserApi.class);
                bind(EntitlementUserApi.class).toInstance(entitlementUserApi);

                final EntitlementInternalApi entitlementInternalApi = Mockito.mock(EntitlementInternalApi.class);
                bind(EntitlementInternalApi.class).toInstance(entitlementInternalApi);

                try {
                    Mockito.when(entitlementUserApi.getBundleFromId(Mockito.<UUID>any(), Mockito.<TenantContext>any())).thenReturn(bundle);
                    Mockito.when(entitlementInternalApi.getBundleFromId(Mockito.<UUID>any(), Mockito.<InternalTenantContext>any())).thenReturn(bundle);
                } catch (EntitlementUserApiException e) {
                    Assert.fail(e.toString());
                }
            }
        });
        checker = i.getInstance(BlockingChecker.class);
    }

    private void setStateBundle(final boolean bC, final boolean bE, final boolean bB) {
        bundleState = new DefaultBlockingState(UUID.randomUUID(), "state", Blockable.Type.SUBSCRIPTION_BUNDLE, "test-service", bC, bE, bB);
        Mockito.when(bundle.getBlockingState()).thenReturn(bundleState);
    }

    private void setStateAccount(final boolean bC, final boolean bE, final boolean bB) {
        accountState = new DefaultBlockingState(UUID.randomUUID(), "state", Blockable.Type.SUBSCRIPTION_BUNDLE, "test-service", bC, bE, bB);
    }

    private void setStateSubscription(final boolean bC, final boolean bE, final boolean bB) {
        subscriptionState = new DefaultBlockingState(UUID.randomUUID(), "state", Blockable.Type.SUBSCRIPTION_BUNDLE, "test-service", bC, bE, bB);
        Mockito.when(subscription.getBlockingState()).thenReturn(subscriptionState);
    }

    @Test(groups = "fast")
    public void testSubscriptionChecker() throws Exception {
        setStateAccount(false, false, false);
        setStateBundle(false, false, false);
        setStateSubscription(false, false, false);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);

        //BLOCKED SUBSCRIPTION
        setStateSubscription(true, false, false);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedChange(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateSubscription(false, true, false);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedEntitlement(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateSubscription(false, false, true);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        try {
            checker.checkBlockedBilling(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        //BLOCKED BUNDLE
        setStateSubscription(false, false, false);
        setStateBundle(true, false, false);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedChange(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateBundle(false, true, false);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedEntitlement(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateBundle(false, false, true);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        try {
            checker.checkBlockedBilling(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        //BLOCKED ACCOUNT
        setStateSubscription(false, false, false);
        setStateBundle(false, false, false);
        setStateAccount(true, false, false);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedChange(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, true, false);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedBilling(subscription, internalCallContext);
        try {
            checker.checkBlockedEntitlement(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, false, true);
        checker.checkBlockedChange(subscription, internalCallContext);
        checker.checkBlockedEntitlement(subscription, internalCallContext);
        try {
            checker.checkBlockedBilling(subscription, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }
    }

    @Test(groups = "fast")
    public void testBundleChecker() throws Exception {
        setStateAccount(false, false, false);
        setStateBundle(false, false, false);
        setStateSubscription(false, false, false);
        checker.checkBlockedChange(bundle, internalCallContext);
        checker.checkBlockedEntitlement(bundle, internalCallContext);
        checker.checkBlockedBilling(bundle, internalCallContext);

        //BLOCKED BUNDLE
        setStateSubscription(false, false, false);
        setStateBundle(true, false, false);
        checker.checkBlockedEntitlement(bundle, internalCallContext);
        checker.checkBlockedBilling(bundle, internalCallContext);
        try {
            checker.checkBlockedChange(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateBundle(false, true, false);
        checker.checkBlockedChange(bundle, internalCallContext);
        checker.checkBlockedBilling(bundle, internalCallContext);
        try {
            checker.checkBlockedEntitlement(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateBundle(false, false, true);
        checker.checkBlockedChange(bundle, internalCallContext);
        checker.checkBlockedEntitlement(bundle, internalCallContext);
        try {
            checker.checkBlockedBilling(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        //BLOCKED ACCOUNT
        setStateSubscription(false, false, false);
        setStateBundle(false, false, false);
        setStateAccount(true, false, false);
        checker.checkBlockedEntitlement(bundle, internalCallContext);
        checker.checkBlockedBilling(bundle, internalCallContext);
        try {
            checker.checkBlockedChange(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, true, false);
        checker.checkBlockedChange(bundle, internalCallContext);
        checker.checkBlockedBilling(bundle, internalCallContext);
        try {
            checker.checkBlockedEntitlement(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, false, true);
        checker.checkBlockedChange(bundle, internalCallContext);
        checker.checkBlockedEntitlement(bundle, internalCallContext);
        try {
            checker.checkBlockedBilling(bundle, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }
    }

    @Test(groups = "fast")
    public void testAccountChecker() throws Exception {
        setStateAccount(false, false, false);
        setStateBundle(false, false, false);
        setStateSubscription(false, false, false);
        checker.checkBlockedChange(account, internalCallContext);
        checker.checkBlockedEntitlement(account, internalCallContext);
        checker.checkBlockedBilling(account, internalCallContext);

        //BLOCKED ACCOUNT
        setStateSubscription(false, false, false);
        setStateBundle(false, false, false);
        setStateAccount(true, false, false);
        checker.checkBlockedEntitlement(account, internalCallContext);
        checker.checkBlockedBilling(account, internalCallContext);
        try {
            checker.checkBlockedChange(account, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, true, false);
        checker.checkBlockedChange(account, internalCallContext);
        checker.checkBlockedBilling(account, internalCallContext);
        try {
            checker.checkBlockedEntitlement(account, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }

        setStateAccount(false, false, true);
        checker.checkBlockedChange(account, internalCallContext);
        checker.checkBlockedEntitlement(account, internalCallContext);
        try {
            checker.checkBlockedBilling(account, internalCallContext);
            Assert.fail("The call should have been blocked!");
        } catch (BlockingApiException e) {
            //Expected behavior
        }
    }
}
