using Jellyfin.Plugin.Multilang.Data;
using Jellyfin.Plugin.Multilang.Services.Providers;
using Jellyfin.Plugin.Multilang.Services.Refresh;

namespace Jellyfin.Plugin.Multilang.Tests;

public sealed class TranslationStoreCleanupTests
{
    [Fact]
    public void CleanupForConfigurationRemovesStaleLanguagesItemsAndFiles()
    {
        var root = TestPaths.CreateRoot();
        try
        {
            var store = new TranslationStore(new TestApplicationPaths(root));
            const string live = "11111111111111111111111111111111";
            const string stale = "22222222222222222222222222222222";
            SeedFacts(store, live);
            SeedFacts(store, stale);
            store.UpsertTranslation(live, "en", "title", "English");
            store.UpsertTranslation(live, "fi", "title", "Finnish");
            store.UpsertTranslation(stale, "en", "title", "Stale");
            store.UpsertGenre(1, "movie", "en", "Action");
            store.UpsertGenre(1, "movie", "fi", "Toiminta");

            AddLocalAsset(store, live, "en", "poster");
            AddLocalAsset(store, live, "fi", "poster");
            AddLocalAsset(store, stale, "en", "poster");
            var orphan = Path.Combine(store.AssetsDirectory, "orphan.jpg");
            File.WriteAllText(orphan, "orphan");

            var result = store.CleanupForConfiguration(
                new HashSet<string>(StringComparer.OrdinalIgnoreCase) { live },
                ["en"],
                localAssetStorage: false);

            Assert.Equal(new LocalCleanupResult(TranslationsDeleted: 1, AssetsDeleted: 2, GenresDeleted: 1, AssetFilesDeleted: 4), result);
            Assert.NotNull(store.GetFacts(live));
            Assert.Null(store.GetFacts(stale));
            Assert.Equal("English", Translation(store, live, "en", "title"));
            Assert.Null(Translation(store, live, "fi", "title"));
            Assert.Null(store.GetAssetPath(live, "en", "poster"));
            Assert.Empty(Directory.EnumerateFiles(store.AssetsDirectory, "*", SearchOption.AllDirectories));
        }
        finally
        {
            TestPaths.DeleteRoot(root);
        }
    }

    private static void SeedFacts(TranslationStore store, string itemId)
        => store.UpsertFacts(
            new RefreshItemInfo(itemId, "1", "movie", RefreshWorkClass.Movies, 0, 0, null, "Movie"),
            new TmdbMetadata("Title", "", "", "Title", "en", [], [], [], []),
            1,
            1);

    private static void AddLocalAsset(TranslationStore store, string itemId, string lang, string kind)
    {
        var relative = Path.Combine(itemId, lang, kind + ".jpg");
        var path = Path.Combine(store.AssetsDirectory, relative);
        Directory.CreateDirectory(Path.GetDirectoryName(path)!);
        File.WriteAllText(path, kind);
        store.UpsertAsset(itemId, lang, kind, TranslationStore.LocalAssetUrlPrefix + relative.Replace('\\', '/'), 1);
    }

    private static string? Translation(TranslationStore store, string itemId, string lang, string field)
        => store.GetTranslations([itemId], [lang])
            .GetValueOrDefault(itemId)?
            .GetValueOrDefault(lang)?
            .GetValueOrDefault(field);
}