/*
 * 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.plumbing.api;

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

import org.joda.time.DateTime;

import com.ning.billing.catalog.api.BillingPeriod;
import com.ning.billing.catalog.api.Plan;
import com.ning.billing.catalog.api.PlanPhase;
import com.ning.billing.catalog.api.PlanPhaseSpecifier;
import com.ning.billing.catalog.api.PriceList;
import com.ning.billing.catalog.api.ProductCategory;
import com.ning.billing.entitlement.api.user.EffectiveSubscriptionEvent;
import com.ning.billing.entitlement.api.user.EntitlementUserApiException;
import com.ning.billing.entitlement.api.user.Subscription;
import com.ning.billing.junction.api.BlockingApi;
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.util.callcontext.CallContext;

public class BlockingSubscription implements Subscription {
    private final Subscription subscription;
    private final BlockingApi blockingApi;
    private final BlockingChecker checker;

    private BlockingState blockingState = null;

    public BlockingSubscription(final Subscription subscription, final BlockingApi blockingApi, final BlockingChecker checker) {
        this.subscription = subscription;
        this.blockingApi = blockingApi;
        this.checker = checker;
    }

    @Override
    public UUID getId() {
        return subscription.getId();
    }

    @Override
    public boolean cancel(final DateTime requestedDate, final boolean eot, final CallContext context) throws EntitlementUserApiException {
        return subscription.cancel(requestedDate, eot, context);
    }

    @Override
    public boolean uncancel(final CallContext context) throws EntitlementUserApiException {
        return subscription.uncancel(context);
    }

    @Override
    public boolean changePlan(final String productName, final BillingPeriod term, final String planSet, final DateTime requestedDate,
                              final CallContext context) throws EntitlementUserApiException {
        try {
            checker.checkBlockedChange(this);
        } catch (BlockingApiException e) {
            throw new EntitlementUserApiException(e, e.getCode(), e.getMessage());
        }
        return subscription.changePlan(productName, term, planSet, requestedDate, context);
    }

    @Override
    public boolean recreate(final PlanPhaseSpecifier spec, final DateTime requestedDate, final CallContext context)
            throws EntitlementUserApiException {
        return subscription.recreate(spec, requestedDate, context);
    }

    @Override
    public UUID getBundleId() {
        return subscription.getBundleId();
    }

    @Override
    public SubscriptionState getState() {
        return subscription.getState();
    }

    @Override
    public DateTime getStartDate() {
        return subscription.getStartDate();
    }

    @Override
    public DateTime getEndDate() {
        return subscription.getEndDate();
    }

    @Override
    public DateTime getFutureEndDate() {
        return subscription.getFutureEndDate();
    }

    @Override
    public Plan getCurrentPlan() {
        return subscription.getCurrentPlan();
    }

    @Override
    public PriceList getCurrentPriceList() {
        return subscription.getCurrentPriceList();
    }

    @Override
    public PlanPhase getCurrentPhase() {
        return subscription.getCurrentPhase();
    }

    @Override
    public DateTime getChargedThroughDate() {
        return subscription.getChargedThroughDate();
    }

    @Override
    public DateTime getPaidThroughDate() {
        return subscription.getPaidThroughDate();
    }

    @Override
    public ProductCategory getCategory() {
        return subscription.getCategory();
    }

    @Override
    public EffectiveSubscriptionEvent getPendingTransition() {
        return subscription.getPendingTransition();
    }

    @Override
    public EffectiveSubscriptionEvent getPreviousTransition() {
        return subscription.getPreviousTransition();
    }

    @Override
    public List<EffectiveSubscriptionEvent> getBillingTransitions() {
        return subscription.getBillingTransitions();
    }

    @Override
    public List<EffectiveSubscriptionEvent> getAllTransitions() {
        return subscription.getAllTransitions();
    }

    @Override
    public BlockingState getBlockingState() {
        if (blockingState == null) {
            blockingState = blockingApi.getBlockingStateFor(this);
        }
        return blockingState;
    }

    public Subscription getDelegateSubscription() {
        return subscription;
    }

}
