Check users for duplicates

src/main/api.zig

@@ -64,8 +64,20 @@ pub const ApiServer = struct {
     }
 
     pub fn createUser(self: *ApiServer, info: CreateInfo(models.User)) !models.User {
+        try self.db.users.lock();
+        defer self.db.users.unlock();
+        // TODO; real queries
+
         const id = Uuid.randV4(self.prng.random());
-        // TODO: check for dupes
+
+        // check for handle dupes
+        var iter = self.db.users.data.iterator();
+        while (iter.next()) |it| {
+            if (std.mem.eql(u8, it.value_ptr.handle, info.handle)) {
+                return error.DuplicateHandle;
+            }
+        }
+        // TODO: check for id dupes
 
         const user = reify(models.User, id, info);
         try self.db.users.put(user);

src/main/db.zig

@@ -93,6 +93,15 @@ pub fn Table(comptime T: type) type {
             }
             try self.data.put(key, copy);
         }
+
+        // TODO
+        pub fn lock(_: *Self) !void {
+            return;
+        }
+
+        pub fn unlock(_: *Self) void {
+            return;
+        }
     };
 }