Garmin: Handle HTTP requests for image service

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/http/HttpHandler.java

@@ -21,11 +21,13 @@ public class HttpHandler {
     private final AgpsHandler agpsHandler;
     private final ContactsHandler contactsHandler;
     private final OauthHandler oauthHandler;
+    private final ImageServiceHandler imageServiceHandler;
 
     public HttpHandler(GarminSupport deviceSupport) {
         agpsHandler = new AgpsHandler(deviceSupport);
         contactsHandler = new ContactsHandler(deviceSupport);
         oauthHandler = new OauthHandler(deviceSupport);
+        imageServiceHandler = new ImageServiceHandler();
     }
 
     public GdiHttpService.HttpService handle(final GdiHttpService.HttpService httpService) {
@@ -62,6 +64,9 @@ public class HttpHandler {
         } else if (request.getPath().startsWith("/api/oauth") || request.getPath().startsWith("/oauthTokenExchangeService")) {
             LOG.info("Got OAuth request for {}", request.getPath());
             response = oauthHandler.handleRequest(request);
+        } else if (request.getPath().startsWith("/image-service/")) {
+            LOG.info("Got image service request for {}", request.getPath());
+            response = imageServiceHandler.handleRequest(request);
         } else {
             LOG.warn("Unhandled path {}", request.getPath());
             response = null;
@@ -92,9 +97,9 @@ public class HttpHandler {
             );
         }
 
-        if (response.getStatus() == 200 && request.getRawRequest().hasUseDataXfer() && request.getRawRequest().getUseDataXfer()) {
+        if (request.getRawRequest().hasUseDataXfer() && request.getRawRequest().getUseDataXfer()) {
             LOG.debug("Data will be returned using data_xfer");
-            int id = DataTransferHandler.registerData(response.getBody());
+            final int id = DataTransferHandler.registerData(response.getBody());
             if (response.getOnDataSuccessfullySentListener() != null) {
                 DataTransferHandler.addOnDataSuccessfullySentListener(id, response.getOnDataSuccessfullySentListener());
             }
@@ -136,7 +141,7 @@ public class HttpHandler {
         }
 
         return GdiHttpService.HttpService.RawResponse.newBuilder()
-                .setStatus(response.getStatus() / 100 == 2 ? GdiHttpService.HttpService.Status.OK : GdiHttpService.HttpService.Status.UNKNOWN_STATUS)
+                .setStatus(GdiHttpService.HttpService.Status.OK)
                 .setHttpStatus(response.getStatus())
                 .setBody(ByteString.copyFrom(responseBody))
                 .addAllHeader(responseHeaders)

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/http/ImageServiceHandler.java

@@ -0,0 +1,57 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.garmin.http;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+
+import nodomain.freeyourgadget.gadgetbridge.proto.garmin.GdiHttpService;
+
+public class ImageServiceHandler {
+    private static final Logger LOG = LoggerFactory.getLogger(ImageServiceHandler.class);
+
+    private static final Gson GSON = new GsonBuilder()
+            //.serializeNulls()
+            .create();
+
+    public GarminHttpResponse handleRequest(final GarminHttpRequest request) {
+        if (request.getRawRequest().getMethod() != GdiHttpService.HttpService.Method.GET) {
+            LOG.warn("Known image service requests should be GET");
+            return null;
+        }
+
+        if (!request.getPath().equals("/image-service/v2/device/images/details")) {
+            LOG.warn("Unknown image service path {}", request.getPath());
+            return null;
+        }
+
+        final String ownerAliasId = request.getQuery().get("ownerAliasId");
+
+        final String requestId = UUID.randomUUID().toString();
+
+        final ErrorResponse errorResponse = new ErrorResponse(requestId, Collections.singletonList(new Error(
+                "Owner alias (" + ownerAliasId + ") not found",
+                "NOT_FOUND"
+        )));
+
+        final GarminHttpResponse response = new GarminHttpResponse();
+        response.setStatus(404);
+        response.setBody(GSON.toJson(errorResponse).getBytes(StandardCharsets.UTF_8));
+        response.getHeaders().put("Content-Type", "application/json");
+        response.getHeaders().put("x-request-id", requestId);
+
+        return response;
+    }
+
+    public record ErrorResponse(String requestId, List<Error> errors) {
+    }
+
+    public record Error(String message, String type) {
+    }
+}