package de.intevation.lada.rest;

import java.util.ArrayList;

import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;
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.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;

import de.intevation.lada.authentication.Authentication;
import de.intevation.lada.authentication.AuthenticationException;
import de.intevation.lada.data.QueryBuilder;
import de.intevation.lada.data.Repository;
import de.intevation.lada.model.LOrt;

@Path("ort")
@RequestScoped
public class LOrtService
{

    /**
     * The repository for LOrt.
     */
    @Inject
    @Named("lortrepository")
    private Repository repository;

    @Inject
    @Named("ldapauth")
    private Authentication authentication;

    @GET
    @Produces("text/json")
    public Response filter(
        @Context UriInfo info,
        @Context HttpHeaders headers
    ) {
        try {
            if (!authentication.isAuthorizedUser(headers)) {
                return new Response(false, 699, new ArrayList<LOrt>());
            }
            MultivaluedMap<String, String> params = info.getQueryParameters();
            if (params.isEmpty() ||
                !params.containsKey("probeId")) {
                return new Response(false, 609, new ArrayList<LOrt>());
            }
            String probeId = params.getFirst("probeId");
            if (authentication.hasAccess(headers, probeId)) {
                QueryBuilder<LOrt> builder =
                    new QueryBuilder<LOrt>(
                        repository.getEntityManager(), LOrt.class);
                builder.and("probeId", probeId);
                return repository.filter(builder.getQuery());
            }
            return new Response(false, 698, new ArrayList<LOrt>());
        }
        catch(AuthenticationException ae) {
            return new Response(false, 699, new ArrayList<LOrt>());
        }
    }

    @PUT
    @Path("/{id}")
    @Produces("text/json")
    @Consumes("application/json")
    public Response update(
        LOrt ort,
        @Context HttpHeaders headers
    ) {
        try {
            String probeId = ort.getProbeId();
            if (authentication.hasAccess(headers, probeId)) {
                return repository.update(ort);
            }
            return new Response(false, 698, new ArrayList<LOrt>());
        }
        catch(AuthenticationException ae) {
            return new Response(false, 699, new ArrayList<LOrt>());
        }
    }

    @POST
    @Produces("text/json")
    @Consumes("application/json")
    public Response create(
        LOrt ort,
        @Context HttpHeaders headers
    ) {
        try {
            String probeId = ort.getProbeId();
            if (authentication.hasAccess(headers, probeId)) {
                return repository.create(ort);
            }
            return new Response(false, 698, new ArrayList<LOrt>());
        }
        catch(AuthenticationException ae) {
            return new Response(false, 699, new ArrayList<LOrt>());
        }
    }
}