/*
 * Copyright 2010-2013 Ning, Inc.
 * Copyright 2014 Groupon, Inc
 * Copyright 2014 The Billing Project, LLC
 *
 * The Billing Project 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 org.killbill.billing.jaxrs.resources;

import java.math.BigDecimal;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

import org.killbill.billing.ObjectType;
import org.killbill.billing.account.api.Account;
import org.killbill.billing.account.api.AccountApiException;
import org.killbill.billing.account.api.AccountUserApi;
import org.killbill.billing.invoice.api.InvoicePayment;
import org.killbill.billing.invoice.api.InvoicePaymentApi;
import org.killbill.billing.invoice.api.InvoicePaymentType;
import org.killbill.billing.jaxrs.json.CustomFieldJson;
import org.killbill.billing.jaxrs.json.InvoiceItemJson;
import org.killbill.billing.jaxrs.json.InvoicePaymentJson;
import org.killbill.billing.jaxrs.json.InvoicePaymentTransactionJson;
import org.killbill.billing.jaxrs.json.TagJson;
import org.killbill.billing.jaxrs.util.Context;
import org.killbill.billing.jaxrs.util.JaxrsUriBuilder;
import org.killbill.billing.payment.api.Payment;
import org.killbill.billing.payment.api.PaymentApi;
import org.killbill.billing.payment.api.PaymentApiException;
import org.killbill.billing.payment.api.PluginProperty;
import org.killbill.billing.util.api.AuditUserApi;
import org.killbill.billing.util.api.CustomFieldApiException;
import org.killbill.billing.util.api.CustomFieldUserApi;
import org.killbill.billing.util.api.TagApiException;
import org.killbill.billing.util.api.TagDefinitionApiException;
import org.killbill.billing.util.api.TagUserApi;
import org.killbill.billing.util.audit.AccountAuditLogs;
import org.killbill.billing.util.callcontext.CallContext;
import org.killbill.billing.util.callcontext.TenantContext;
import org.killbill.clock.Clock;

import com.codahale.metrics.annotation.Timed;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;
import com.wordnik.swagger.annotations.ApiResponse;
import com.wordnik.swagger.annotations.ApiResponses;

import static javax.ws.rs.core.MediaType.APPLICATION_JSON;

@Path(JaxrsResource.INVOICE_PAYMENTS_PATH)
@Api(value = JaxrsResource.INVOICE_PAYMENTS_PATH, description = "Operations on invoice payments")
public class InvoicePaymentResource extends JaxRsResourceBase {

    private static final String ID_PARAM_NAME = "paymentId";

    private final InvoicePaymentApi invoicePaymentApi;

    @Inject
    public InvoicePaymentResource(final AccountUserApi accountUserApi,
                                  final PaymentApi paymentApi,
                                  final JaxrsUriBuilder uriBuilder,
                                  final TagUserApi tagUserApi,
                                  final CustomFieldUserApi customFieldUserApi,
                                  final AuditUserApi auditUserApi,
                                  final InvoicePaymentApi invoicePaymentApi,
                                  final Clock clock,
                                  final Context context) {
        super(uriBuilder, tagUserApi, customFieldUserApi, auditUserApi, accountUserApi, paymentApi, clock, context);
        this.invoicePaymentApi = invoicePaymentApi;
    }

    @Timed
    @GET
    @Path("/{paymentId:" + UUID_PATTERN + "}/")
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Retrieve a payment by id", response = InvoicePaymentJson.class)
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied"),
                           @ApiResponse(code = 404, message = "Payment not found")})
    public Response getInvoicePayment(@PathParam("paymentId") final String paymentIdStr,
                                      @QueryParam(QUERY_WITH_PLUGIN_INFO) @DefaultValue("false") final Boolean withPluginInfo,
                                      @QueryParam(QUERY_PLUGIN_PROPERTY) final List<String> pluginPropertiesString,
                                      @QueryParam(QUERY_AUDIT) @DefaultValue("NONE") final AuditMode auditMode,
                                      @javax.ws.rs.core.Context final HttpServletRequest request) throws PaymentApiException {

        final Iterable<PluginProperty> pluginProperties = extractPluginProperties(pluginPropertiesString);
        final UUID paymentIdId = UUID.fromString(paymentIdStr);
        final TenantContext tenantContext = context.createContext(request);
        final Payment payment = paymentApi.getPayment(paymentIdId, withPluginInfo, pluginProperties, tenantContext);
        final AccountAuditLogs accountAuditLogs = auditUserApi.getAccountAuditLogs(payment.getAccountId(), auditMode.getLevel(), tenantContext);

        final List<InvoicePayment> invoicePayments = invoicePaymentApi.getInvoicePayments(paymentIdId, tenantContext);
        final InvoicePayment invoicePayment = Iterables.tryFind(invoicePayments, new Predicate<InvoicePayment>() {
            @Override
            public boolean apply(final InvoicePayment input) {
                return input.getType() == InvoicePaymentType.ATTEMPT;
            }
        }).orNull();
        final UUID invoiceId = invoicePayment != null ? invoicePayment.getInvoiceId() : null;

        final InvoicePaymentJson result = new InvoicePaymentJson(payment, invoiceId, accountAuditLogs);
        return Response.status(Response.Status.OK).entity(result).build();
    }

    @Timed
    @POST
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + REFUNDS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Refund a payment, and adjust the invoice if needed")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied"),
                           @ApiResponse(code = 404, message = "Account or payment not found")})
    public Response createRefundWithAdjustments(final InvoicePaymentTransactionJson json,
                                                @PathParam("paymentId") final String paymentId,
                                                @QueryParam(QUERY_PLUGIN_PROPERTY) final List<String> pluginPropertiesString,
                                                @HeaderParam(HDR_CREATED_BY) final String createdBy,
                                                @HeaderParam(HDR_REASON) final String reason,
                                                @HeaderParam(HDR_COMMENT) final String comment,
                                                @javax.ws.rs.core.Context final UriInfo uriInfo,
                                                @javax.ws.rs.core.Context final HttpServletRequest request) throws PaymentApiException, AccountApiException {
        verifyNonNullOrEmpty(json, "InvoicePaymentTransactionJson body should be specified");

        final CallContext callContext = context.createContext(createdBy, reason, comment, request);
        final UUID paymentUuid = UUID.fromString(paymentId);
        final Payment payment = paymentApi.getPayment(paymentUuid, false, ImmutableList.<PluginProperty>of(), callContext);
        final Account account = accountUserApi.getAccountById(payment.getAccountId(), callContext);

        final Iterable<PluginProperty> pluginProperties;
        final String transactionExternalKey = json.getTransactionExternalKey() != null ? json.getTransactionExternalKey() : UUID.randomUUID().toString();
        if (json.isAdjusted() != null && json.isAdjusted()) {
            if (json.getAdjustments() != null && json.getAdjustments().size() > 0) {
                final Map<UUID, BigDecimal> adjustments = new HashMap<UUID, BigDecimal>();
                for (final InvoiceItemJson item : json.getAdjustments()) {
                    adjustments.put(UUID.fromString(item.getInvoiceItemId()), item.getAmount());
                }
                pluginProperties = extractPluginProperties(pluginPropertiesString,
                                                           new PluginProperty("IPCD_REFUND_WITH_ADJUSTMENTS", "true", false),
                                                           new PluginProperty("IPCD_REFUND_IDS_AMOUNTS", adjustments, false));
            } else {
                pluginProperties = extractPluginProperties(pluginPropertiesString,
                                                           new PluginProperty("IPCD_REFUND_WITH_ADJUSTMENTS", "true", false));
            }
        } else {
            pluginProperties = extractPluginProperties(pluginPropertiesString);
        }

        final Payment result = paymentApi.createRefundWithPaymentControl(account, payment.getId(), json.getAmount(), account.getCurrency(), transactionExternalKey,
                                                                               pluginProperties, createInvoicePaymentControlPluginApiPaymentOptions(false), callContext);
        return uriBuilder.buildResponse(InvoicePaymentResource.class, "getInvoicePayment", result.getId(), uriInfo.getBaseUri().toString());
    }

    @Timed
    @POST
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + CHARGEBACKS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Record a chargeback")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied"),
                           @ApiResponse(code = 404, message = "Account or payment not found")})
    public Response createChargeback(final InvoicePaymentTransactionJson json,
                                     @PathParam("paymentId") final String paymentId,
                                     @HeaderParam(HDR_CREATED_BY) final String createdBy,
                                     @HeaderParam(HDR_REASON) final String reason,
                                     @HeaderParam(HDR_COMMENT) final String comment,
                                     @javax.ws.rs.core.Context final UriInfo uriInfo,
                                     @javax.ws.rs.core.Context final HttpServletRequest request) throws PaymentApiException, AccountApiException {
        verifyNonNullOrEmpty(json, "InvoicePaymentTransactionJson body should be specified");
        verifyNonNullOrEmpty(json.getAmount(), "InvoicePaymentTransactionJson amount needs to be set");

        final CallContext callContext = context.createContext(createdBy, reason, comment, request);
        final UUID paymentUuid = UUID.fromString(paymentId);
        final Payment payment = paymentApi.getPayment(paymentUuid, false, ImmutableList.<PluginProperty>of(), callContext);
        final Account account = accountUserApi.getAccountById(payment.getAccountId(), callContext);
        final String transactionExternalKey = json.getTransactionExternalKey() != null ? json.getTransactionExternalKey() : UUID.randomUUID().toString();

        final Payment result = paymentApi.createChargebackWithPaymentControl(account, payment.getId(), json.getAmount(), account.getCurrency(),
                                                                                   transactionExternalKey, createInvoicePaymentControlPluginApiPaymentOptions(false), callContext);
        return uriBuilder.buildResponse(uriInfo, InvoicePaymentResource.class, "getInvoicePayment", result.getId());
    }

    @Timed
    @GET
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + CUSTOM_FIELDS)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Retrieve payment custom fields", response = CustomFieldJson.class, responseContainer = "List")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied")})
    public Response getCustomFields(@PathParam(ID_PARAM_NAME) final String id,
                                    @QueryParam(QUERY_AUDIT) @DefaultValue("NONE") final AuditMode auditMode,
                                    @javax.ws.rs.core.Context final HttpServletRequest request) {
        return super.getCustomFields(UUID.fromString(id), auditMode, context.createContext(request));
    }

    @Timed
    @POST
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + CUSTOM_FIELDS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Add custom fields to payment")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied")})
    public Response createCustomFields(@PathParam(ID_PARAM_NAME) final String id,
                                       final List<CustomFieldJson> customFields,
                                       @HeaderParam(HDR_CREATED_BY) final String createdBy,
                                       @HeaderParam(HDR_REASON) final String reason,
                                       @HeaderParam(HDR_COMMENT) final String comment,
                                       @javax.ws.rs.core.Context final HttpServletRequest request,
                                       @javax.ws.rs.core.Context final UriInfo uriInfo) throws CustomFieldApiException {
        return super.createCustomFields(UUID.fromString(id), customFields,
                                        context.createContext(createdBy, reason, comment, request), uriInfo);
    }

    @Timed
    @DELETE
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + CUSTOM_FIELDS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Remove custom fields from payment")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied")})
    public Response deleteCustomFields(@PathParam(ID_PARAM_NAME) final String id,
                                       @QueryParam(QUERY_CUSTOM_FIELDS) final String customFieldList,
                                       @HeaderParam(HDR_CREATED_BY) final String createdBy,
                                       @HeaderParam(HDR_REASON) final String reason,
                                       @HeaderParam(HDR_COMMENT) final String comment,
                                       @javax.ws.rs.core.Context final HttpServletRequest request) throws CustomFieldApiException {
        return super.deleteCustomFields(UUID.fromString(id), customFieldList,
                                        context.createContext(createdBy, reason, comment, request));
    }

    @Timed
    @GET
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + TAGS)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Retrieve payment tags", response = TagJson.class, responseContainer = "List")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied"),
                           @ApiResponse(code = 404, message = "Payment not found")})
    public Response getTags(@PathParam(ID_PARAM_NAME) final String paymentIdString,
                            @QueryParam(QUERY_PLUGIN_PROPERTY) final List<String> pluginPropertiesString,
                            @QueryParam(QUERY_AUDIT) @DefaultValue("NONE") final AuditMode auditMode,
                            @QueryParam(QUERY_TAGS_INCLUDED_DELETED) @DefaultValue("false") final Boolean includedDeleted,
                            @javax.ws.rs.core.Context final HttpServletRequest request) throws TagDefinitionApiException, PaymentApiException {
        final Iterable<PluginProperty> pluginProperties = extractPluginProperties(pluginPropertiesString);
        final UUID paymentId = UUID.fromString(paymentIdString);
        final TenantContext tenantContext = context.createContext(request);
        final Payment payment = paymentApi.getPayment(paymentId, false, pluginProperties, tenantContext);
        return super.getTags(payment.getAccountId(), paymentId, auditMode, includedDeleted, tenantContext);
    }

    @Timed
    @POST
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + TAGS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Add tags to payment")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied")})
    public Response createTags(@PathParam(ID_PARAM_NAME) final String id,
                               @QueryParam(QUERY_TAGS) final String tagList,
                               @HeaderParam(HDR_CREATED_BY) final String createdBy,
                               @HeaderParam(HDR_REASON) final String reason,
                               @HeaderParam(HDR_COMMENT) final String comment,
                               @javax.ws.rs.core.Context final UriInfo uriInfo,
                               @javax.ws.rs.core.Context final HttpServletRequest request) throws TagApiException {
        return super.createTags(UUID.fromString(id), tagList, uriInfo,
                                context.createContext(createdBy, reason, comment, request));
    }

    @Timed
    @DELETE
    @Path("/{paymentId:" + UUID_PATTERN + "}/" + TAGS)
    @Consumes(APPLICATION_JSON)
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Remove tags from payment")
    @ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid payment id supplied")})
    public Response deleteTags(@PathParam(ID_PARAM_NAME) final String id,
                               @QueryParam(QUERY_TAGS) final String tagList,
                               @HeaderParam(HDR_CREATED_BY) final String createdBy,
                               @HeaderParam(HDR_REASON) final String reason,
                               @HeaderParam(HDR_COMMENT) final String comment,
                               @javax.ws.rs.core.Context final HttpServletRequest request) throws TagApiException {
        return super.deleteTags(UUID.fromString(id), tagList,
                                context.createContext(createdBy, reason, comment, request));
    }

    @Override
    protected ObjectType getObjectType() {
        return ObjectType.PAYMENT;
    }
}
