[ADD/WIP] Start implementing invites.

I'll need to add the direct flag somewhere in the room leaves.
Also, it seems like there's a giant bottleneck in my code...

src/Room.c

@@ -35,6 +35,7 @@
 #include <Cytoplasm/Base64.h>
 #include <Cytoplasm/Util.h>
 #include <Cytoplasm/Str.h>
+#include <Cytoplasm/Log.h>
 #include <Cytoplasm/Db.h>
 
 #include <Schema/RoomCreateRequest.h>
@@ -76,7 +77,6 @@ GenerateRoomId(ServerPart s)
     string = ParserRecomposeCommonID(cid);
     Free(cid.local);
 
-
     return string;
 }
 static void
@@ -84,7 +84,7 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
 {
     CommonID sender;
     char *sender_str, *key, *version;
-    HashMap *content, *event, *override;
+    HashMap *content, *event, *override, *pl_content;
     Array *initial_states;
     JsonValue *val;
     size_t i;
@@ -92,7 +92,7 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
     char *join_rules_preset = NULL;
     char *history_visibility_preset = NULL;
     char *guest_access_preset = NULL;
-    /* TODO: Manage trusted private chat */
+    bool trusted_room = false;
 
     sender.sigil = '@';
     sender.local = UserGetName(user);
@@ -150,6 +150,7 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
         }
         HashMapSet(content, key, JsonValueDuplicate(val));
     }
+    pl_content = JsonDuplicate(content);
     event = RoomEventCreate(sender_str, "m.room.power_levels", "", content);
     JsonFree(RoomEventSend(room, event));
     JsonFree(event);
@@ -163,7 +164,7 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
             guest_access_preset = "forbidden";
             break;
         case ROOM_CREATE_TRUSTED:
-            /* TODO */
+            trusted_room = true;
             /* Fallthrough */
         case ROOM_CREATE_PRIVATE:
             join_rules_preset = "invite";
@@ -272,6 +273,40 @@ RoomPopulate(Room *room, User *user, RoomCreateRequest *req, ServerPart s)
         Free(fullStr);
         Free(serverStr);
     }
+    /* Invites */
+    for (i = 0; i < ArraySize(req->invite); i++)
+    {
+        char *user_id = ArrayGet(req->invite, i);
+        
+        if (!user_id || !ValidCommonID(user_id, '@'))
+        {
+            /* TODO: Raise error. */
+            break;
+        }
+
+        content = HashMapCreate();
+        if (req->is_direct)
+        {
+            JsonSet(content, JsonValueBoolean(true), 1, "is_direct");
+        }
+        JsonSet(content, JsonValueString("invite"), 1, "membership");
+        event = RoomEventCreate(sender_str, "m.room.member", user_id, content);
+        JsonFree(RoomEventSend(room, event));
+        JsonFree(event);
+        
+        if (trusted_room)
+        {
+            JsonValue *own = JsonGet(pl_content, 2, "users", sender_str);
+            JsonValueFree(JsonSet(
+                pl_content, JsonValueDuplicate(own),
+                2, "users", user_id));
+        }
+        
+    }
+    event = RoomEventCreate(sender_str, "m.room.power_levels", "", pl_content);
+    JsonFree(RoomEventSend(room, event));
+    JsonFree(event);
+
     /* TODO: The rest of the events mandated by the specification on 
      * POST /createRoom, and error management. */