001package jmri.server.json.memory;
002
003import static jmri.server.json.JSON.DATA;
004import static jmri.server.json.JSON.VALUE;
005import static jmri.server.json.memory.JsonMemory.MEMORIES;
006import static jmri.server.json.memory.JsonMemory.MEMORY;
007import static jmri.server.json.idtag.JsonIdTag.IDTAG;
008import static jmri.server.json.reporter.JsonReporter.REPORTER;
009
010import com.fasterxml.jackson.databind.JsonNode;
011import com.fasterxml.jackson.databind.ObjectMapper;
012import com.fasterxml.jackson.databind.node.ObjectNode;
013import javax.servlet.http.HttpServletResponse;
014
015import jmri.BasicRosterEntry;
016import jmri.InstanceManager;
017import jmri.Memory;
018import jmri.MemoryManager;
019import jmri.ProvidingManager;
020import jmri.server.json.JsonException;
021import jmri.server.json.JsonNamedBeanHttpService;
022import jmri.server.json.JsonRequest;
023import jmri.server.json.idtag.JsonIdTagHttpService;
024import jmri.server.json.reporter.JsonReporterHttpService;
025import jmri.server.json.roster.JsonRosterHttpService;
026
027/**
028 * @author Randall Wood
029 */
030public class JsonMemoryHttpService extends JsonNamedBeanHttpService<Memory> {
031
032    private JsonIdTagHttpService idTagService = new JsonIdTagHttpService(mapper);
033    private JsonReporterHttpService reporterService = new JsonReporterHttpService(mapper);
034    private JsonRosterHttpService rosterService = new JsonRosterHttpService(mapper);   
035
036    public JsonMemoryHttpService(ObjectMapper mapper) {
037        super(mapper);
038    }
039
040    @Override
041    public ObjectNode doGet(Memory memory, String name, String type, JsonRequest request) throws JsonException {
042        ObjectNode root = this.getNamedBean(memory, name, getType(), request);
043        ObjectNode data = root.with(DATA);
044        if (memory != null) {
045            Object val = memory.getValue();
046            if (val == null) {
047                data.putNull(VALUE);
048            } else {
049                // set memory value based on type
050                if (val instanceof jmri.IdTag) {
051                    ObjectNode idTagValue = idTagService.doGet((jmri.IdTag) val, name, IDTAG, request);
052                    data.set(VALUE, idTagValue);
053                } else if (val instanceof jmri.Reporter) {
054                    ObjectNode reporterValue = reporterService.doGet((jmri.Reporter) val, name, REPORTER, request);
055                    data.set(VALUE, reporterValue);
056                } else if (val instanceof jmri.BasicRosterEntry) {
057                    ObjectNode rosterValue = (ObjectNode) rosterService.getRosterEntry(request.locale, ((BasicRosterEntry) val).getId(), request.id);
058                    data.set(VALUE, rosterValue);
059                } else {
060                    // send string for types not explicitly handled
061                    data.put(VALUE, val.toString());
062                }
063            }
064        }
065        return root;
066    }
067
068    @Override
069    public ObjectNode doPost(Memory memory, String name, String type, JsonNode data, JsonRequest request)
070            throws JsonException {
071        if (!data.path(VALUE).isMissingNode()) {
072            if (data.path(VALUE).isNull()) {
073                memory.setValue(null);
074            } else {
075                memory.setValue(data.path(VALUE).asText());
076            }
077        }
078        return this.doGet(memory, name, type, request);
079    }
080
081    @Override
082    public JsonNode doSchema(String type, boolean server, JsonRequest request) throws JsonException {
083        switch (type) {
084            case MEMORY:
085            case MEMORIES:
086                return doSchema(type,
087                        server,
088                        "jmri/server/json/memory/memory-server.json",
089                        "jmri/server/json/memory/memory-client.json",
090                        request.id);
091            default:
092                throw new JsonException(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
093                        Bundle.getMessage(request.locale, JsonException.ERROR_UNKNOWN_TYPE, type), request.id);
094        }
095    }
096
097    @Override
098    protected String getType() {
099        return MEMORY;
100    }
101
102    @Override
103    protected ProvidingManager<Memory> getManager() {
104        return InstanceManager.getDefault(MemoryManager.class);
105    }
106}