Convert registration to async

Sources/App/Management/SQLiteDatabase.swift

@@ -32,18 +32,28 @@ final class SQLiteDatabase {
         self.mailConfiguration = mail
     }
 
-    func registerPlayer(named name: PlayerName, hash: PasswordHash, in database: Database) -> EventLoopFuture<SessionToken> {
-        User.query(on: database).filter(\.$name == name).first()
-            .guard({ $0 == nil }, else: Abort(.conflict)).flatMap { _ in
-                let user = User(name: name, hash: hash)
-                return user.create(on: database).map {
-                    // Create a new token and store it for the user
-                    let token = SessionToken.newToken()
-                    self.sessionTokenForPlayer[name] = token
-                    self.playerNameForToken[token] = name
-                    return token
-                }
+    func registerPlayer(named name: PlayerName, hash: PasswordHash, email: String?, in database: Database) async throws -> SessionToken {
+        if let email {
+            let user = try await User
+                .query(on: database)
+                .filter(\.$recoveryEmail == email)
+                .first()
+            if user != nil {
+                throw Abort(.conflict)
             }
+        }
+        if try await User.query(on: database).filter(\.$name == name).first() != nil {
+            throw Abort(.conflict)
+        }
+        let user = User(name: name, hash: hash, email: email)
+        try await user.create(on: database)
+
+        // Create a new token and store it for the user
+        let token = SessionToken.newToken()
+        self.sessionTokenForPlayer[name] = token
+        self.playerNameForToken[token] = name
+        return token
+    }
     }
 
     private func sendEmail(name: PlayerName, email: String, token: String) {