//
//  UnconfiguredJellyfinService.swift
//
//  Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//

import Foundation

/// A ``JellyfinService`` that has no server and fails every call.
///
/// This fills the `\.client` environment slot when nothing has been injected. Every operation
/// throws ``JellyfinClientError/notConfigured``, so a view mounted without
/// `.environment(\.client, ...)` reports a precise, actionable failure at its first call rather
/// than silently talking to a placeholder host or trapping at mount time.
///
/// It is stateless, so the single ``shared`` instance serves every unresolved slot.
package final class UnconfiguredJellyfinService: JellyfinService {
    /// The shared placeholder instance.
    package static let shared = UnconfiguredJellyfinService()

    private init() {}

    /// Always `false`: a service with no server can hold no token.
    package var isAuthenticated: Bool { false }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func publicServerInfo() async throws -> JellyfinServerInfo {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func serverInfo() async throws -> JellyfinServerInfo {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func publicUsers() async throws -> [JellyfinUser] {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func authenticate(username: String, password: String) async throws -> JellyfinAuthentication {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func quickConnectEnabled() async throws -> Bool {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func initiateQuickConnect() async throws -> JellyfinQuickConnectState {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func quickConnectState(secret: String) async throws -> JellyfinQuickConnectState {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func authenticateWithQuickConnect(secret: String) async throws -> JellyfinAuthentication {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func updateUserPassword(
        userID: String?,
        currentPassword: String?,
        currentPIN: String?,
        newPassword: String?,
        resetPassword: Bool?
    ) async throws {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func libraries(_ options: JellyfinListOptions) async throws -> [JellyfinLibrary] {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func items(_ query: JellyfinMediaQuery) async throws -> JellyfinMediaPage {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func item(id: String, userID: String?) async throws -> JellyfinMediaItem {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func resumeItems(_ options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func nextUp(seriesID: String?, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func latestMedia(_ options: JellyfinListOptions) async throws -> [JellyfinMediaItem] {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func seasons(seriesID: String, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func episodes(seriesID: String, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func searchHints(term: String, options: JellyfinListOptions) async throws -> [JellyfinSearchHint] {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func image(
        itemID: String,
        type: JellyfinImageType,
        index: Int32?,
        request: JellyfinImageRequest
    ) async throws -> Data {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func markPlayed(itemID: String, userID: String?, datePlayed: Date?) async throws -> JellyfinUserData {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func markUnplayed(itemID: String, userID: String?) async throws -> JellyfinUserData {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func markFavorite(itemID: String, userID: String?) async throws -> JellyfinUserData {
        throw JellyfinClientError.notConfigured
    }

    /// - Throws: Always ``JellyfinClientError/notConfigured``.
    package func unmarkFavorite(itemID: String, userID: String?) async throws -> JellyfinUserData {
        throw JellyfinClientError.notConfigured
    }
}