/* 
 * 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.payment.api;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.UUID;

import org.joda.time.DateTime;

import com.google.common.base.Function;
import com.google.common.collect.Collections2;
import com.ning.billing.catalog.api.Currency;
import com.ning.billing.payment.dao.PaymentAttemptModelDao;
import com.ning.billing.payment.dao.PaymentModelDao;
import com.ning.billing.util.entity.EntityBase;

public class DefaultPayment extends EntityBase implements Payment {


    private final UUID accountId;
    private final UUID invoiceId;
    private final UUID paymentMethodId;
    private final BigDecimal amount;
    private final Currency currency;
    private final DateTime effectiveDate;
    private final Integer paymentNumber;
    private final PaymentStatus paymentStatus;
    private final List<PaymentAttempt> attempts;


    private DefaultPayment(final UUID id, final UUID accountId, final UUID invoiceId,
                           final UUID paymentMethodId, final BigDecimal amount, final Currency currency,
                           final DateTime effectiveDate, final Integer paymentNumber,
                           final PaymentStatus paymentStatus, final String paymentError, final List<PaymentAttempt> attempts) {
        super(id);
        this.accountId = accountId;
        this.invoiceId = invoiceId;
        this.paymentMethodId = paymentMethodId;
        this.amount = amount;
        this.currency = currency;
        this.effectiveDate = effectiveDate;
        this.paymentNumber = paymentNumber;
        this.paymentStatus = paymentStatus;
        this.attempts = attempts;
    }

    public DefaultPayment(final PaymentModelDao src, final List<PaymentAttemptModelDao> attempts) {
        this(src.getId(),
             src.getAccountId(),
             src.getInvoiceId(),
             src.getPaymentMethodId(),
             src.getAmount(),
             src.getCurrency(),
             src.getEffectiveDate(),
             src.getPaymentNumber(),
             src.getPaymentStatus(),
             null,
             toPaymentAttempts(attempts));
    }


    @Override
    public Integer getPaymentNumber() {
        return paymentNumber;
    }

    @Override
    public UUID getAccountId() {
        return accountId;
    }

    @Override
    public UUID getInvoiceId() {
        return invoiceId;
    }

    @Override
    public UUID getPaymentMethodId() {
        return paymentMethodId;
    }

    @Override
    public BigDecimal getAmount() {
        return amount;
    }

    @Override
    public DateTime getEffectiveDate() {
        return effectiveDate;
    }

    @Override
    public Currency getCurrency() {
        return currency;
    }

    @Override
    public PaymentStatus getPaymentStatus() {
        return paymentStatus;
    }


    @Override
    public List<PaymentAttempt> getAttempts() {
        return attempts;
    }

    private static List<PaymentAttempt> toPaymentAttempts(final List<PaymentAttemptModelDao> attempts) {
        if (attempts == null || attempts.size() == 0) {
            return Collections.emptyList();
        }
        return new ArrayList<Payment.PaymentAttempt>(Collections2.transform(attempts, new Function<PaymentAttemptModelDao, PaymentAttempt>() {
            @Override
            public PaymentAttempt apply(final PaymentAttemptModelDao input) {
                return new PaymentAttempt() {
                    @Override
                    public PaymentStatus getPaymentStatus() {
                        return input.getPaymentStatus();
                    }

                    @Override
                    public String getErrorMsg() {
                        return input.getPaymentError();
                    }

                    @Override
                    public DateTime getEffectiveDate() {
                        return input.getEffectiveDate();
                    }

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