Add first database version and model

Sources/App/Management/SQLiteDatabase.swift

@@ -0,0 +1,177 @@
+import Foundation
+import Fluent
+import Vapor
+
+typealias PasswordHash = String
+typealias SessionToken = String
+
+final class SQLiteDatabase {
+
+    /// A mapping between player name and generated access tokens for a session
+    private var sessionTokenForPlayer = [PlayerName: SessionToken]()
+
+    /// A reverse mapping between generated access tokens and player name
+    private var playerNameForToken = [SessionToken: PlayerName]()
+
+    private let tables: TableManagement
+
+    init(db: Database) throws {
+        self.tables = try TableManagement(db: db)
+    }
+
+    func registerPlayer(named name: PlayerName, hash: PasswordHash, in database: Database) -> EventLoopFuture<SessionToken> {
+        User.query(on: database).filter(\.$name == name).first()
+            .guard({ $0 == nil }, else: Abort(.conflict)).flatMap { _ in
+                let user = User(name: name, hash: hash)
+                return user.create(on: database).map {
+                    // Create a new token and store it for the user
+                    let token = SessionToken.newToken()
+                    self.sessionTokenForPlayer[name] = token
+                    self.playerNameForToken[token] = name
+                    return token
+                }
+            }
+    }
+
+    func passwordHashForExistingPlayer(named name: PlayerName, in database: Database) -> EventLoopFuture<PasswordHash> {
+        User.query(on: database).filter(\.$name == name).first()
+            .unwrap(or: Abort(.forbidden)).map { $0.passwordHash }
+    }
+
+    func deletePlayer(named name: PlayerName, in database: Database)  -> EventLoopFuture<Void> {
+        user(named: name, in: database).flatMap { user in
+            self.tables.leaveTable(player: user, in: database)
+        }.flatMap {
+            User.query(on: database).filter(\.$name == name).delete()
+        }
+    }
+
+    func isValid(sessionToken token: SessionToken) -> Bool {
+        playerNameForToken[token] != nil
+    }
+
+    func startSession(socket: WebSocket, sessionToken token: SessionToken) -> Bool {
+        guard let player = playerNameForToken[token] else {
+            return false
+        }
+        return tables.connect(player: player, using: socket)
+    }
+
+    private func didReceive(message: String, forSessionToken token: SessionToken) {
+        // TODO: Handle client requests
+        print("Session \(token.prefix(6)): \(message)")
+    }
+
+    func endSession(forSessionToken sessionToken: SessionToken) {
+        guard let player = endExistingSession(forSessionToken: sessionToken) else {
+            return
+        }
+        tables.disconnect(player: player)
+    }
+
+    private func endExistingSession(forSessionToken token: SessionToken) -> PlayerName? {
+        guard let player = playerNameForToken.removeValue(forKey: token) else {
+            return nil
+        }
+        sessionTokenForPlayer.removeValue(forKey: player)
+        return player
+    }
+
+
+    /**
+     Start a new session for an existing user.
+     - Parameter name: The user name
+     - Returns: The generated access token for the session
+     */
+    func startNewSessionForRegisteredPlayer(named name: PlayerName) -> SessionToken {
+        let token = SessionToken.newToken()
+        self.sessionTokenForPlayer[name] = token
+        self.playerNameForToken[token] = name
+        return token
+    }
+
+    func registeredPlayerExists(withSessionToken token: SessionToken) -> PlayerName? {
+        playerNameForToken[token]
+    }
+
+    func currentTableOfPlayer(named player: PlayerName) -> TableInfo? {
+        tables.tableInfo(player: player)
+    }
+
+    private func points(for player: PlayerName, in database: Database) -> EventLoopFuture<Int> {
+        User.query(on: database)
+            .filter(\.$name == player)
+            .first()
+            .unwrap(or: Abort(.notFound))
+            .map { $0.points }
+    }
+
+    private func user(named name: PlayerName, in database: Database) -> EventLoopFuture<User> {
+        User.query(on: database)
+            .filter(\.$name == name)
+            .first()
+            .unwrap(or: Abort(.notFound))
+    }
+
+    private func user(withToken token: SessionToken, in database: Database) -> EventLoopFuture<User> {
+        database.eventLoop
+            .future()
+            .map { self.playerNameForToken[token] }
+            .unwrap(or: Abort(.unauthorized))
+            .flatMap { name in
+                self.user(named: name, in: database)
+            }
+    }
+
+    // MARK: Tables
+
+    /**
+     Create a new table with optional players.
+     - Parameter name: The name of the table
+     - Parameter players: The player creating the table
+     - Parameter isPublic: Indicates that this is a game joinable by everyone
+     - Returns: The table id
+     */
+    func createTable(named name: TableName, player: PlayerName, isPublic: Bool, in database: Database) -> EventLoopFuture<TableInfo> {
+        user(named: player, in: database).flatMap { player in
+            self.tables.createTable(named: name, player: player, isPublic: isPublic, in: database)
+        }
+    }
+
+    func getPublicTableInfos() -> [PublicTableInfo] {
+        tables.publicTableList
+    }
+
+    func join(tableId: UUID, playerToken: SessionToken, in database: Database) -> EventLoopFuture<TableInfo> {
+        user(withToken: playerToken, in: database).flatMap { player in
+            self.tables.join(tableId: tableId, player: player, in: database)
+        }
+    }
+
+    func leaveTable(playerToken: SessionToken, in database: Database) -> EventLoopFuture<Void> {
+        user(withToken: playerToken, in: database).flatMap { player in
+            self.tables.leaveTable(player: player, in: database)
+        }
+    }
+
+    func performAction(playerToken: SessionToken, action: PlayerAction) -> PlayerActionResult {
+        guard let player = playerNameForToken[playerToken] else {
+            return .invalidToken
+        }
+        return tables.performAction(player: player, action: action)
+    }
+
+    func select(game: GameType, playerToken: SessionToken) -> PlayerActionResult {
+        guard let player = playerNameForToken[playerToken] else {
+            return .invalidToken
+        }
+        return tables.select(game: game, player: player)
+    }
+
+    func play(card: Card, playerToken: SessionToken) -> PlayerActionResult {
+        guard let player = playerNameForToken[playerToken] else {
+            return .invalidToken
+        }
+        return tables.play(card: card, player: player)
+    }
+}