/**
 * 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.fund.api;

import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriInfo;

import org.mifosplatform.commands.domain.CommandWrapper;
import org.mifosplatform.commands.service.CommandWrapperBuilder;
import org.mifosplatform.commands.service.PortfolioCommandSourceWritePlatformService;
import org.mifosplatform.infrastructure.codes.data.CodeData;
import org.mifosplatform.infrastructure.core.api.ApiRequestParameterHelper;
import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
import org.mifosplatform.infrastructure.core.serialization.ApiRequestJsonSerializationSettings;
import org.mifosplatform.infrastructure.core.serialization.DefaultToApiJsonSerializer;
import org.mifosplatform.infrastructure.security.service.PlatformSecurityContext;
import org.mifosplatform.portfolio.fund.data.FundData;
import org.mifosplatform.portfolio.fund.service.FundReadPlatformService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Path("/funds")
@Component
@Scope("singleton")
public class FundsApiResource {

    /**
     * The set of parameters that are supported in response for {@link CodeData}
     */
    private final Set<String> RESPONSE_DATA_PARAMETERS = new HashSet<>(Arrays.asList("id", "name", "externalId"));

    private final String resourceNameForPermissions = "FUND";

    private final PlatformSecurityContext context;
    private final FundReadPlatformService readPlatformService;
    private final DefaultToApiJsonSerializer<FundData> toApiJsonSerializer;
    private final ApiRequestParameterHelper apiRequestParameterHelper;
    private final PortfolioCommandSourceWritePlatformService commandsSourceWritePlatformService;

    @Autowired
    public FundsApiResource(final PlatformSecurityContext context, final FundReadPlatformService readPlatformService,
            final DefaultToApiJsonSerializer<FundData> toApiJsonSerializer, final ApiRequestParameterHelper apiRequestParameterHelper,
            final PortfolioCommandSourceWritePlatformService commandsSourceWritePlatformService) {
        this.context = context;
        this.readPlatformService = readPlatformService;
        this.toApiJsonSerializer = toApiJsonSerializer;
        this.apiRequestParameterHelper = apiRequestParameterHelper;
        this.commandsSourceWritePlatformService = commandsSourceWritePlatformService;
    }

    @GET
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String retrieveFunds(@Context final UriInfo uriInfo) {

        this.context.authenticatedUser().validateHasReadPermission(this.resourceNameForPermissions);

        final Collection<FundData> funds = this.readPlatformService.retrieveAllFunds();

        final ApiRequestJsonSerializationSettings settings = this.apiRequestParameterHelper.process(uriInfo.getQueryParameters());
        return this.toApiJsonSerializer.serialize(settings, funds, this.RESPONSE_DATA_PARAMETERS);
    }

    @POST
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String createFund(final String apiRequestBodyAsJson) {

        final CommandWrapper commandRequest = new CommandWrapperBuilder().createFund().withJson(apiRequestBodyAsJson).build();

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

        return this.toApiJsonSerializer.serialize(result);
    }

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

        this.context.authenticatedUser().validateHasReadPermission(this.resourceNameForPermissions);

        final FundData fund = this.readPlatformService.retrieveFund(fundId);

        final ApiRequestJsonSerializationSettings settings = this.apiRequestParameterHelper.process(uriInfo.getQueryParameters());
        return this.toApiJsonSerializer.serialize(settings, fund, this.RESPONSE_DATA_PARAMETERS);
    }

    @PUT
    @Path("{fundId}")
    @Consumes({ MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_JSON })
    public String updateFund(@PathParam("fundId") final Long fundId, final String apiRequestBodyAsJson) {

        final CommandWrapper commandRequest = new CommandWrapperBuilder().updateFund(fundId).withJson(apiRequestBodyAsJson).build();

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

        return this.toApiJsonSerializer.serialize(result);
    }
}