//
// Swiftfin is subject to the terms of the Mozilla Public
// License, v2.0. If a copy of the MPL was not distributed with this
// file, you can obtain one at https://mozilla.org/MPL/2.0/.
//
// Copyright (c) 2022 Jellyfin & Jellyfin Contributors
//

import CoreStore
import Foundation
import JellyfinAPI
import Stinsen

final class UserSignInViewModel: ViewModel {

    @RouterObject
    var router: UserSignInCoordinator.Router?
    let server: SwiftfinStore.State.Server

    @Published
    var publicUsers: [UserDto] = []

    init(server: SwiftfinStore.State.Server) {
        self.server = server
        JellyfinAPIAPI.basePath = server.currentURI
    }

    var alertTitle: String {
        var message: String = ""
        if errorMessage?.code != ErrorMessage.noShowErrorCode {
            message.append(contentsOf: "\(errorMessage?.code ?? ErrorMessage.noShowErrorCode)\n")
        }
        message.append(contentsOf: "\(errorMessage?.title ?? L10n.unknownError)")
        return message
    }

    func login(username: String, password: String) {
        LogManager.log.debug("Attempting to login to server at \"\(server.currentURI)\"", tag: "login")

        SessionManager.main.loginUser(server: server, username: username, password: password)
            .trackActivity(loading)
            .sink { completion in
                self.handleAPIRequestError(displayMessage: L10n.unableToConnectServer, completion: completion)
            } receiveValue: { _ in
            }
            .store(in: &cancellables)
    }

    func cancelSignIn() {
        for cancellable in cancellables {
            cancellable.cancel()
        }

        self.isLoading = false
    }

    func loadUsers() {
        UserAPI.getPublicUsers()
            .trackActivity(loading)
            .sink(receiveCompletion: { completion in
                self.handleAPIRequestError(displayMessage: L10n.unableToConnectServer, completion: completion)
            }, receiveValue: { response in
                self.publicUsers = response
            })
            .store(in: &cancellables)
    }

    func getProfileImageUrl(user: UserDto) -> URL? {
        let urlString = ImageAPI.getUserImageWithRequestBuilder(
            userId: user.id ?? "--",
            imageType: .primary,
            width: 200,
            quality: 90
        ).URLString
        return URL(string: urlString)
    }

    func getSplashscreenUrl() -> URL? {
        let urlString = ImageAPI.getSplashscreenWithRequestBuilder().URLString
        return URL(string: urlString)
    }
}