handler for POST requests to user inboxes

Java/Spring/activitypubbot/src/main/java/dev/activitypub/activitypubbot/RestHandler.java

@@ -1,10 +1,13 @@
 package dev.activitypub.activitypubbot;
 
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.server.ResponseStatusException;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
@@ -15,10 +18,12 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import java.util.List;
 import java.util.Map;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * Here we handle any JSON/REST requests, which is how ActivityPub instances talk to each other.
  */
+@Slf4j
 @RestController
 public class RestHandler {
 
@@ -82,4 +87,46 @@ public class RestHandler {
         ObjectMapper mapper = new ObjectMapper();
         return mapper.writeValueAsString( response );
     }
+
+
+	/**
+	 * 
+	 */
+	@PostMapping(value = "/users/{username}/inbox", produces = "application/activity+json") // content type based on Masto request
+	public String inboxpost(@PathVariable String username, @RequestBody Map<String, Object> postdata) {
+        log.info("RestHandler::inboxpost: " + username + " map: " + postdata.toString());
+        Bot bot = botServ.getBotByUsername( username );
+        if( bot == null ) {
+            //return new ResponseEntity<>("These are not the droids you are looking for.", HttpStatus.NOT_FOUND);
+        }
+        if( !postdata.containsKey("type") ) {
+            // no request type, so we think we've been sent junk
+            throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY, "No request 'type' specified.");
+        }
+
+        // What sort of inbox post is this... we probably eventually want the terms
+        // here to be via some sort of request type handler registry. Perhaps an
+        // ActivityPubActivity interface defining some consumer of JSON...
+        switch ((String)postdata.get("type")) {
+            case "Follow":
+                // process a follow request, a job for BotService? FollowService? How to represent a "follow"...
+                // Note: https://w3c.github.io/activitypub/#followers
+                return "{ follow: \"the leader\"; }";
+            case "Create":
+            case "Update":
+            case "Delete":
+            case "Accept":
+            case "Reject":
+            case "Add":
+            case "Remove":
+            case "Announce":
+            case "Undo":
+                // not implemented:
+                throw new ResponseStatusException(HttpStatus.NOT_IMPLEMENTED, "Nope!");
+            default:
+                // unprocessable content
+                throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY, "Unknown 'type': " + postdata.get("type") );
+        }
+	}
+
 }