Added GET_QDN_RESOURCE_METADATA action.

Q-Apps.md

@@ -240,6 +240,9 @@ Here is a list of currently supported actions:
 - SEARCH_QDN_RESOURCES
 - GET_QDN_RESOURCE_STATUS
 - GET_QDN_RESOURCE_PROPERTIES
+- GET_QDN_RESOURCE_METADATA
+- GET_QDN_RESOURCE_URL
+- LINK_TO_QDN_RESOURCE
 - FETCH_QDN_RESOURCE
 - PUBLISH_QDN_RESOURCE
 - PUBLISH_MULTIPLE_QDN_RESOURCES
@@ -258,8 +261,6 @@ Here is a list of currently supported actions:
 - FETCH_BLOCK_RANGE
 - SEARCH_TRANSACTIONS
 - GET_PRICE
-- GET_QDN_RESOURCE_URL
-- LINK_TO_QDN_RESOURCE
 - GET_LIST_ITEMS
 - ADD_LIST_ITEMS
 - DELETE_LIST_ITEM
@@ -420,6 +421,16 @@ let res = await qortalRequest({
 // Returns: filename, size, mimeType (where available)
 ```
 
+### Get QDN resource metadata
+```
+let res = await qortalRequest({
+    action: "GET_QDN_RESOURCE_METADATA",
+    name: "QortalDemo",
+    service: "THUMBNAIL",
+    identifier: "qortal_avatar" // Optional
+});
+```
+
 ### Publish a single file to QDN
 _Requires user approval_.<br />
 Note: this publishes a single, base64-encoded file. Multi-file resource publishing (such as a WEBSITE or GIF_REPOSITORY) is not yet supported via a Q-App. It will be added in a future update.

src/main/java/org/qortal/api/resource/ArbitraryResource.java

@@ -721,12 +721,9 @@ public class ArbitraryResource {
 			}
 	)
 	@SecurityRequirement(name = "apiKey")
-	public ArbitraryResourceMetadata getMetadata(@HeaderParam(Security.API_KEY_HEADER) String apiKey,
-							  @PathParam("service") Service service,
-							  @PathParam("name") String name,
-							  @PathParam("identifier") String identifier) {
-		Security.checkApiCallAllowed(request);
-
+	public ArbitraryResourceMetadata getMetadata(@PathParam("service") Service service,
+							  					 @PathParam("name") String name,
+							  					 @PathParam("identifier") String identifier) {
 		ArbitraryDataResource resource = new ArbitraryDataResource(name, ResourceIdType.NAME, service, identifier);
 
 		try {

src/main/resources/q-apps/q-apps.js

@@ -250,6 +250,11 @@ window.addEventListener("message", (event) => {
             url = "/arbitrary/resource/properties/" + data.service + "/" + data.name + "/" + identifier;
             return httpGetAsyncWithEvent(event, url);
 
+        case "GET_QDN_RESOURCE_METADATA":
+            identifier = (data.identifier != null) ? data.identifier : "default";
+            url = "/arbitrary/metadata/" + data.service + "/" + data.name + "/" + identifier;
+            return httpGetAsyncWithEvent(event, url);
+
         case "SEARCH_CHAT_MESSAGES":
             url = "/chat/messages?";
             if (data.before != null) url = url.concat("&before=" + data.before);