/**
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package org.mifosplatform.portfolio.client.api;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
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.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriInfo;

import org.apache.commons.lang.StringUtils;
import org.mifosplatform.commands.domain.CommandWrapper;
import org.mifosplatform.commands.service.CommandWrapperBuilder;
import org.mifosplatform.commands.service.PortfolioCommandSourceWritePlatformService;
import org.mifosplatform.infrastructure.core.api.ApiRequestParameterHelper;
import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
import org.mifosplatform.infrastructure.core.exception.UnrecognizedQueryParamException;
import org.mifosplatform.infrastructure.core.serialization.ApiRequestJsonSerializationSettings;
import org.mifosplatform.infrastructure.core.serialization.DefaultToApiJsonSerializer;
import org.mifosplatform.infrastructure.core.service.Page;
import org.mifosplatform.infrastructure.core.service.SearchParameters;
import org.mifosplatform.infrastructure.security.service.PlatformSecurityContext;
import org.mifosplatform.portfolio.client.data.ClientTransactionData;
import org.mifosplatform.portfolio.client.service.ClientTransactionReadPlatformService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Path("/clients/{clientId}/transactions")
@Component
public class ClientTransactionsApiResource {

    private final PlatformSecurityContext context;
    private final ClientTransactionReadPlatformService clientTransactionReadPlatformService;
    private final DefaultToApiJsonSerializer<ClientTransactionData> toApiJsonSerializer;
    private final ApiRequestParameterHelper apiRequestParameterHelper;
    private final PortfolioCommandSourceWritePlatformService commandsSourceWritePlatformService;

    @Autowired
    public ClientTransactionsApiResource(final PlatformSecurityContext context,
            final ClientTransactionReadPlatformService clientTransactionReadPlatformService,
            final DefaultToApiJsonSerializer<ClientTransactionData> toApiJsonSerializer,
            final ApiRequestParameterHelper apiRequestParameterHelper,
            final PortfolioCommandSourceWritePlatformService commandsSourceWritePlatformService) {
        this.context = context;
        this.clientTransactionReadPlatformService = clientTransactionReadPlatformService;
        this.toApiJsonSerializer = toApiJsonSerializer;
        this.apiRequestParameterHelper = apiRequestParameterHelper;
        this.commandsSourceWritePlatformService = commandsSourceWritePlatformService;
    }

    @GET
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String retrieveAllClientTransactions(@PathParam("clientId") final Long clientId, @Context final UriInfo uriInfo,
            @QueryParam("offset") final Integer offset, @QueryParam("limit") final Integer limit) {
        this.context.authenticatedUser().validateHasReadPermission(ClientApiConstants.CLIENT_CHARGES_RESOURCE_NAME);

        SearchParameters searchParameters = SearchParameters.forPagination(offset, limit);
        final Page<ClientTransactionData> clientTransactions = this.clientTransactionReadPlatformService.retrieveAllTransactions(clientId,
                searchParameters);

        final ApiRequestJsonSerializationSettings settings = this.apiRequestParameterHelper.process(uriInfo.getQueryParameters());
        return this.toApiJsonSerializer.serialize(settings, clientTransactions,
                ClientApiConstants.CLIENT_TRANSACTION_RESPONSE_DATA_PARAMETERS);
    }

    @GET
    @Path("{transactionId}")
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String retrieveClientTransaction(@PathParam("clientId") final Long clientId,
            @PathParam("transactionId") final Long transactionId, @Context final UriInfo uriInfo) {

        this.context.authenticatedUser().validateHasReadPermission(ClientApiConstants.CLIENT_CHARGES_RESOURCE_NAME);

        final ClientTransactionData clientTransaction = this.clientTransactionReadPlatformService.retrieveTransaction(clientId,
                transactionId);

        final ApiRequestJsonSerializationSettings settings = this.apiRequestParameterHelper.process(uriInfo.getQueryParameters());
        return this.toApiJsonSerializer.serialize(settings, clientTransaction,
                ClientApiConstants.CLIENT_TRANSACTION_RESPONSE_DATA_PARAMETERS);
    }

    @POST
    @Path("{transactionId}")
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String undoClientTransaction(@PathParam("clientId") final Long clientId, @PathParam("transactionId") final Long transactionId,
            @QueryParam("command") final String commandParam, final String apiRequestBodyAsJson) {

        String json = "";
        if (is(commandParam, ClientApiConstants.CLIENT_TRANSACTION_COMMAND_UNDO)) {
            final CommandWrapper commandRequest = new CommandWrapperBuilder().undoClientTransaction(clientId, transactionId)
                    .withJson(apiRequestBodyAsJson).build();

            final CommandProcessingResult result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);

            json = this.toApiJsonSerializer.serialize(result);
        } else {
            throw new UnrecognizedQueryParamException("command", commandParam, ClientApiConstants.CLIENT_TRANSACTION_COMMAND_UNDO);
        }

        return json;
    }

    private boolean is(final String commandParam, final String commandValue) {
        return StringUtils.isNotBlank(commandParam) && commandParam.trim().equalsIgnoreCase(commandValue);
    }

}