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) {

Sources/App/Model/User.swift

@@ -63,11 +63,12 @@ final class User: Model {
     init() { }
 
     /// Creates a new user.
-    init(id: UUID? = nil, name: String, hash: String) {
+    init(id: UUID? = nil, name: String, hash: String, email: String? = nil) {
         self.id = id
         self.name = name
         self.passwordHash = hash
         self.points = 0
+        self.recoveryEmail = email
     }
 }
 

Sources/App/routes.swift

@@ -50,20 +50,18 @@ func routes(_ app: Application) throws {
  - `424`: The password could not be hashed
  */
 func registerPlayer(_ app: Application) {
-    app.post("player", "register") { req -> EventLoopFuture<SessionToken> in
-        let name = try req.header(.name)
-        let password = try req.header(.password)
-        let mail = req.optionalHeader(.email)?.trimmed.nonEmpty
+    app.post("player", "register") { request async throws -> SessionToken in
+        let name = try request.header(.name)
+        let hash = try request.hashedPassword() // errors: 400, 424
+        let mail = request.optionalHeader(.email)?.trimmed.nonEmpty
 
-        guard name.count < maximumPlayerNameLength,
-              password.count < maximumPasswordLength else {
+        guard name.count < maximumPlayerNameLength else {
             throw Abort(.notAcceptable) // 406
         }
-        
-        let hash = try req.hashedPassword() // errors: 400, 424
 
         // Can throw conflict (409)
-        return server.registerPlayer(named: name, hash: hash, in: req.db)
+        // if either the player exists, or the email is already in use
+        return try await server.registerPlayer(named: name, hash: hash, email: mail, in: request.db)
     }
 }
 /**