element-ios/RiotSwiftUI/Modules/Authentication/Common/Service/MatrixSDK/SessionCreator.swift

// 
// Copyright 2022 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import Foundation

protocol SessionCreatorProtocol {
    /// Creates an `MXSession` using the supplied credentials and REST client.
    /// - Parameters:
    ///   - credentials: The `MXCredentials` for the account.
    ///   - client: The client that completed the authentication.
    /// - Returns: A new `MXSession` for the account.
    func createSession(credentials: MXCredentials, client: AuthenticationRestClient) -> MXSession
}

/// A struct that provides common functionality to create a new session.
struct SessionCreator: SessionCreatorProtocol {

    private let accountManager: MXKAccountManager

    init(withAccountManager accountManager: MXKAccountManager = .shared()) {
        self.accountManager = accountManager
    }

    func createSession(credentials: MXCredentials, client: AuthenticationRestClient) -> MXSession {
        // Report the new account in account manager
        if credentials.identityServer == nil {
            credentials.identityServer = client.identityServer
        }
        
        let account = MXKAccount(credentials: credentials)
        
        if let identityServer = credentials.identityServer {
            account.identityServerURL = identityServer
        }
        
        accountManager.addAccount(account, andOpenSession: true)
        return account.mxSession
    }
}