using System.Net;
using System.Text;
using Jellyfin.Plugin.Multilang.Services.Providers;
using Jellyfin.Plugin.Multilang.Services.Refresh;

namespace Jellyfin.Plugin.Multilang.Tests;

public sealed class ProviderClientTests
{
    [Fact]
    public async Task TmdbMetadataParsesMovieFieldsAndDeduplicatesGenres()
    {
        var factory = JsonFactory("""
            {
              "title": "Finnish title",
              "overview": "Overview",
              "tagline": "Tagline",
              "original_title": "Original title",
              "original_language": "fi",
              "origin_country": ["FI", "FI"],
              "production_countries": [{"iso_3166_1":"FI"}],
              "spoken_languages": [{"iso_639_1":"fi"}, {"iso_639_1":"en"}],
              "genres": [{"id": 18, "name": "Drama"}, {"id": 18, "name": "Duplicate"}]
            }
            """);
        var client = new TmdbClient(factory);

        var result = await client.FetchMetadataAsync(Movie(), "fi-FI", "key", new FetchRateLimiter(TimeSpan.Zero), CancellationToken.None);

        Assert.NotNull(result);
        Assert.Equal("Finnish title", result.Title);
        Assert.Equal("Original title", result.OriginalTitle);
        Assert.Equal("fi", result.OriginalLanguage);
        Assert.Equal(["FI"], result.OriginCountries);
        Assert.Equal(["fi", "en"], result.SpokenLanguages);
        Assert.Equal([18], result.GenreIds);
        Assert.Contains("language=fi-FI", factory.Requests.Single());
    }

    [Fact]
    public async Task TmdbImagesKeepTheFirstImageForEachLanguage()
    {
        var factory = JsonFactory("""
            {
              "posters": [
                {"iso_639_1":"fi", "file_path":"/first.jpg"},
                {"iso_639_1":"fi", "file_path":"/second.jpg"},
                {"iso_639_1":null, "file_path":"/none.jpg"}
              ],
              "logos": [{"iso_639_1":"sv", "file_path":"/logo.png"}],
              "backdrops": [{"iso_639_1":"en", "file_path":"/backdrop.jpg"}]
            }
            """);
        var client = new TmdbClient(factory);

        var result = await client.FetchImagesAsync(Movie(), "key", new FetchRateLimiter(TimeSpan.Zero), CancellationToken.None);

        Assert.NotNull(result);
        Assert.Equal("https://image.tmdb.org/t/p/original/first.jpg", result.Posters["fi"]);
        Assert.Equal("https://image.tmdb.org/t/p/original/logo.png", result.Logos["sv"]);
        Assert.Equal("https://image.tmdb.org/t/p/original/backdrop.jpg", result.Backdrops["en"]);
    }

    [Fact]
    public async Task TmdbNotFoundReturnsNoMetadata()
    {
        var factory = new TestHttpClientFactory(_ => new HttpResponseMessage(HttpStatusCode.NotFound));
        var client = new TmdbClient(factory);

        var result = await client.FetchMetadataAsync(Movie(), "en", "key", new FetchRateLimiter(TimeSpan.Zero), CancellationToken.None);

        Assert.Null(result);
    }

    [Fact]
    public async Task FanartSelectsMostLikedArtworkAndUsesStandardLogoAsFallback()
    {
        var factory = JsonFactory("""
            {
              "movieposter": [
                {"lang":"fi", "url":"https://images/fi-low.jpg", "likes":"2"},
                {"lang":"fi", "url":"https://images/fi-best.jpg", "likes":"8"},
                {"lang":"00", "url":"https://images/no-language.jpg", "likes":"99"}
              ],
              "hdmovielogo": [{"lang":"sv", "url":"https://images/hd-logo.png", "likes":1}],
              "movielogo": [
                {"lang":"sv", "url":"https://images/standard-sv.png", "likes":9},
                {"lang":"fi", "url":"https://images/standard-fi.png", "likes":3}
              ],
              "moviebanner": [{"lang":"fi", "url":"https://images/banner.jpg", "likes":0}],
              "moviethumb": [{"lang":"fi", "url":"https://images/thumb.jpg", "likes":0}]
            }
            """);
        var client = new FanartClient(factory);

        var result = await client.FetchMovieImagesAsync("123", "key", CancellationToken.None);

        Assert.NotNull(result);
        Assert.Equal("https://images/fi-best.jpg", result.Posters["fi"]);
        Assert.Equal("https://images/hd-logo.png", result.Logos["sv"]);
        Assert.Equal("https://images/standard-fi.png", result.Logos["fi"]);
        Assert.Equal("https://images/banner.jpg", result.Banners["fi"]);
        Assert.Equal("https://images/thumb.jpg", result.Thumbs["fi"]);
    }

    private static RefreshItemInfo Movie()
        => new("11111111111111111111111111111111", "123", "movie", RefreshWorkClass.Movies, 0, 0, null, "Movie");

    private static TestHttpClientFactory JsonFactory(string json)
        => new(_ => new HttpResponseMessage(HttpStatusCode.OK)
        {
            Content = new StringContent(json, Encoding.UTF8, "application/json")
        });
}