//
//  ClientEnvironmentKeyTests.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
import LuminateCore
@_spi(Portico) import Portico
import Testing

@testable import LuminateUI

/// A ``JellyfinService`` that exists only to be told apart from the default.
private final class StubJellyfinService: JellyfinService {
    var isAuthenticated: Bool { true }

    func publicServerInfo() async throws -> JellyfinServerInfo { JellyfinServerInfo() }
    func serverInfo() async throws -> JellyfinServerInfo { JellyfinServerInfo() }
    func publicUsers() async throws -> [JellyfinUser] { [] }
    func currentUser() async throws -> JellyfinUser { JellyfinUser() }
    func authenticate(username: String, password: String) async throws -> JellyfinAuthentication {
        JellyfinAuthentication(accessToken: "stub")
    }
    func quickConnectEnabled() async throws -> Bool { false }
    func initiateQuickConnect() async throws -> JellyfinQuickConnectState { JellyfinQuickConnectState() }
    func quickConnectState(secret: String) async throws -> JellyfinQuickConnectState { JellyfinQuickConnectState() }
    func authenticateWithQuickConnect(secret: String) async throws -> JellyfinAuthentication {
        JellyfinAuthentication(accessToken: "stub")
    }
    func updateUserPassword(
        userID: String?,
        currentPassword: String?,
        currentPIN: String?,
        newPassword: String?,
        resetPassword: Bool?
    ) async throws {}
    func libraries(_ options: JellyfinListOptions) async throws -> [JellyfinLibrary] { [] }
    func items(_ query: JellyfinMediaQuery) async throws -> JellyfinMediaPage { JellyfinMediaPage() }
    func item(id: String, userID: String?) async throws -> JellyfinMediaItem { JellyfinMediaItem() }
    func resumeItems(_ options: JellyfinListOptions) async throws -> JellyfinMediaPage { JellyfinMediaPage() }
    func nextUp(seriesID: String?, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        JellyfinMediaPage()
    }
    func latestMedia(_ options: JellyfinListOptions) async throws -> [JellyfinMediaItem] { [] }
    func seasons(seriesID: String, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        JellyfinMediaPage()
    }
    func episodes(seriesID: String, options: JellyfinListOptions) async throws -> JellyfinMediaPage {
        JellyfinMediaPage()
    }
    func searchHints(term: String, options: JellyfinListOptions) async throws -> [JellyfinSearchHint] { [] }
    func image(
        itemID: String,
        type: JellyfinImageType,
        index: Int32?,
        request: JellyfinImageRequest
    ) async throws -> Data {
        Data()
    }
    func markPlayed(itemID: String, userID: String?, datePlayed: Date?) async throws -> JellyfinUserData {
        JellyfinUserData()
    }
    func markUnplayed(itemID: String, userID: String?) async throws -> JellyfinUserData { JellyfinUserData() }
    func markFavorite(itemID: String, userID: String?) async throws -> JellyfinUserData { JellyfinUserData() }
    func unmarkFavorite(itemID: String, userID: String?) async throws -> JellyfinUserData { JellyfinUserData() }
}

/// Guards the `\\.client` environment slot itself.
///
/// No widgets are constructed, so these run on a headless machine without `Gtk.initCheck()`.
@MainActor @Suite struct ClientEnvironmentKeyTests {
    @Test("An unresolved slot falls back to the unconfigured service")
    func defaultIsUnconfigured() {
        #expect(EnvironmentValues().client is UnconfiguredJellyfinService)
    }

    @Test("The key path routes through the environment subscript")
    func keyPathResolvesToABox() {
        #expect(EnvironmentValues()._box(for: \.client) != nil)
    }

    @Test("An injected service replaces the default")
    func injectionOverridesDefault() {
        var values = EnvironmentValues()
        values.client = StubJellyfinService()
        #expect(values.client is StubJellyfinService)
    }
}