//
// Copyright 2025 Element Creations Ltd.
// Copyright 2024-2025 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
// Please see LICENSE files in the repository root for full details.
//

import Foundation
import MatrixRustSDK
import MatrixRustSDKMocks

nonisolated extension ClientSDKMock {
    struct Configuration {
        // MARK: Authentication
        
        var serverAddress = "matrix.org"
        var homeserverURL = "https://matrix-client.matrix.org"
        var slidingSyncVersion = SlidingSyncVersion.native
        var oAuthLoginURL: String? = "https://account.matrix.org/authorize"
        var supportsOAuthCreatePrompt = true
        var supportsPasswordLogin = true
        var elementWellKnown: String?
        var tileServerMapStyleURL: String?
        var validCredentials = (username: "alice", password: "12345678")
        
        // MARK: Session
        
        var userID: String?
        var session = Session(accessToken: UUID().uuidString,
                              refreshToken: nil,
                              userId: "@alice:matrix.org",
                              deviceId: UUID().uuidString,
                              homeserverUrl: "https://matrix-client.matrix.org",
                              oauthData: nil,
                              slidingSyncVersion: .native)
    }
    
    enum MockError: Error { case generic }
    
    convenience init(_ configuration: Configuration) {
        self.init()
        
        homeserverLoginDetailsReturnValue = HomeserverLoginDetailsSDKMock(configuration: configuration)
        slidingSyncVersionReturnValue = configuration.slidingSyncVersion
        userIdServerNameThrowableError = MockError.generic
        serverReturnValue = "https://\(configuration.serverAddress)"
        homeserverReturnValue = configuration.homeserverURL
        urlForOauthOauthConfigurationPromptLoginHintDeviceIdAdditionalScopesReturnValue = OAuthAuthorizationDataSDKMock(configuration: configuration)
        loginUsernamePasswordInitialDeviceNameDeviceIdClosure = { [weak self] username, password, _, _ in
            guard username == configuration.validCredentials.username,
                  password == configuration.validCredentials.password else {
                throw MockError.generic // use the matrix error
            }
            if username.hasPrefix("@"), username.contains(":") {
                self?.userIdReturnValue = username
            } else {
                self?.userIdReturnValue = "@\(username):\(configuration.serverAddress)"
            }
        }
        
        userIdReturnValue = configuration.userID
        sessionReturnValue = configuration.session
        getUrlUrlClosure = { url in
            guard url.contains(".well-known/element/element.json") else { throw MockError.generic }
            if let elementWellKnownData = configuration.elementWellKnown?.data(using: .utf8) {
                return elementWellKnownData
            } else {
                throw MockError.generic
            }
        }
        tileServerReturnValue = configuration.tileServerMapStyleURL.map { TileServerInfo(mapStyleUrl: $0) }
    }
}

nonisolated extension HomeserverLoginDetailsSDKMock {
    convenience init(configuration: ClientSDKMock.Configuration) {
        self.init()
        
        slidingSyncVersionReturnValue = configuration.slidingSyncVersion
        supportsPasswordLoginReturnValue = configuration.supportsPasswordLogin
        supportsOauthLoginReturnValue = configuration.oAuthLoginURL != nil
        supportedOauthPromptsReturnValue = switch (configuration.oAuthLoginURL, configuration.supportsOAuthCreatePrompt) {
        case (.none, _): []
        case (.some, true): [.consent, .create]
        case (.some, false): [.consent]
        }
        urlReturnValue = configuration.homeserverURL
    }
}

nonisolated extension OAuthAuthorizationDataSDKMock {
    convenience init(configuration: ClientSDKMock.Configuration) {
        self.init()
        
        loginUrlReturnValue = configuration.oAuthLoginURL
    }
}