using System.IO;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Data.Sqlite;
using Xunit;
using ytLive.Models;
using ytLive.Services;
using ytLive.ViewModels;

namespace ytLive.Tests;

public class SocialBarTests
{
    private static string TempDbPath()
    {
        var path = Path.Combine(Path.GetTempPath(), $"ytLlive-social-test-{System.Guid.NewGuid():N}.db");
        SqliteConnection.ClearAllPools();
        if (File.Exists(path)) File.Delete(path);
        return path;
    }

    /// <summary>Resolves every fediverse domain as Mastodon — the heal test only
    /// cares that a missing stored software name gets filled in and persisted.</summary>
    private sealed class MastodonValidator : ISocialValidator
    {
        public Task<string?> ResolveFediverseSoftwareAsync(string domain, CancellationToken ct)
            => Task.FromResult<string?>("mastodon");

        public Task<SocialLookupResult> LookupAsync(SocialService service, string handleOrUrl, CancellationToken ct)
            => throw new System.NotSupportedException();
    }

    [Fact]
    public void SocialEntry_FediverseSoftware_SettableUpdatesLogo()
    {
        var entry = new SocialEntry
        {
            Service = SocialService.Fediverse,
            Handle = "@gramps@llamachile.tube",
            ProfileUrl = "https://llamachile.tube/@gramps",
        };
        var honeycomb = entry.LogoData;
        entry.FediverseSoftware = "mastodon";
        Assert.Equal(SocialServiceIcons.LogoDataForFediverse("mastodon"), entry.LogoData);
        Assert.NotEqual(honeycomb, entry.LogoData);
    }

    /// <summary>The single integration test for this branch: a fediverse entry
    /// persisted with a NULL software name is loaded, healed via the real validator
    /// seam, and the resolved name is persisted back — surviving a second load.</summary>
    [Fact]
    public async Task Socials_HealMissingFediverseSoftware_RoundTripsThroughDb()
    {
        var path = TempDbPath();
        try
        {
            var socials = new SocialsConfig();
            socials.Entries.Add(new SocialEntry
            {
                Service = SocialService.Fediverse,
                Handle = "@gramps@llamachile.tube",
                ProfileUrl = "https://llamachile.tube/@gramps",
            });
            using (var store = new LayoutStore(path))
                store.Save(new[] { new Scene { Name = "Live" } }, null, socials);

            SocialsConfig? loaded;
            using (var store = new LayoutStore(path))
            {
                store.Load();
                loaded = store.Socials;
                Assert.NotNull(loaded);
                Assert.Null(loaded!.Entries[0].FediverseSoftware);
            }

            var healed = await MainViewModel.HealFediverseSoftwareAsync(loaded!, new MastodonValidator());
            Assert.Single(healed);
            Assert.Equal("mastodon", healed["@gramps@llamachile.tube"]);
            loaded.Entries[0].FediverseSoftware = healed["@gramps@llamachile.tube"];

            using (var store = new LayoutStore(path))
                store.Save(new[] { new Scene { Name = "Live" } }, null, loaded);

            using (var store = new LayoutStore(path))
            {
                store.Load();
                var again = store.Socials;
                Assert.NotNull(again);
                Assert.Equal("mastodon", again!.Entries[0].FediverseSoftware);
            }
        }
        finally
        {
            SqliteConnection.ClearAllPools();
            if (File.Exists(path)) File.Delete(path);
        }
    }

    [Fact]
    public void SocialsConfig_RoundTrip_PersistsEntriesAndBarSettings()
    {
        var path = TempDbPath();
        try
        {
            var socials = new SocialsConfig
            {
                BarPosition = SocialBarPosition.Top,
                BarEnabled = false,
            };
            socials.Entries.Add(new SocialEntry
            {
                Service = SocialService.YouTube,
                Handle = "mychannel",
                ProfileUrl = "https://www.youtube.com/@mychannel",
            });
            socials.Entries.Add(new SocialEntry
            {
                Service = SocialService.Twitch,
                Handle = "streamer123",
                ProfileUrl = "https://www.twitch.tv/streamer123",
            });
            socials.Entries.Add(new SocialEntry
            {
                Service = SocialService.Fediverse,
                Handle = "@gramps@llamachile.tube",
                ProfileUrl = "https://llamachile.tube/@gramps",
                FediverseSoftware = "peertube",
            });

            using (var store = new LayoutStore(path))
            {
                var scene = new Scene { Name = "Live" };
                scene.HasSocialBar = true;
                store.Save(new[] { scene }, null, socials);
            }

            using (var store = new LayoutStore(path))
            {
                var scenes = store.Load();
                Assert.NotNull(store.Socials);
                Assert.Equal(3, store.Socials!.Entries.Count);
                Assert.Equal(SocialService.YouTube, store.Socials.Entries[0].Service);
                Assert.Equal("mychannel", store.Socials.Entries[0].Handle);
                Assert.Equal("https://www.youtube.com/@mychannel", store.Socials.Entries[0].ProfileUrl);
                Assert.Equal(SocialService.Twitch, store.Socials.Entries[1].Service);
                Assert.Equal(SocialService.Fediverse, store.Socials.Entries[2].Service);
                Assert.Equal("@gramps@llamachile.tube", store.Socials.Entries[2].Handle);
                Assert.Equal("peertube", store.Socials.Entries[2].FediverseSoftware);
                Assert.Equal(SocialBarPosition.Top, store.Socials.BarPosition);
                Assert.False(store.Socials.BarEnabled);
                Assert.True(scenes[0].HasSocialBar);
            }
        }
        finally
        {
            SqliteConnection.ClearAllPools();
            if (File.Exists(path)) File.Delete(path);
        }
    }

    [Fact]
    public void SocialsConfig_EmptyEntries_NotPersisted()
    {
        var path = TempDbPath();
        try
        {
            var socials = new SocialsConfig();
            using (var store = new LayoutStore(path))
            {
                store.Save(new[] { new Scene { Name = "Live" } }, null, socials);
            }

            using (var store = new LayoutStore(path))
            {
                Assert.Null(store.Socials);
            }
        }
        finally
        {
            SqliteConnection.ClearAllPools();
            if (File.Exists(path)) File.Delete(path);
        }
    }

    [Fact]
    public void SocialsConfig_DefaultBarEnabled_IsOn()
    {
        Assert.True(new SocialsConfig().BarEnabled);
    }

    [Fact]
    public void SocialServiceIcons_CanonicalUrlFor_AllServices()
    {
        Assert.Equal("https://www.youtube.com/@test", SocialServiceIcons.CanonicalUrlFor(SocialService.YouTube, "test"));
        Assert.Equal("https://www.youtube.com/@test", SocialServiceIcons.CanonicalUrlFor(SocialService.YouTube, "@test"));
        Assert.Equal("https://x.com/user", SocialServiceIcons.CanonicalUrlFor(SocialService.X, "user"));
        Assert.Equal("https://github.com/dev", SocialServiceIcons.CanonicalUrlFor(SocialService.GitHub, "dev"));
        Assert.Equal("https://example.com", SocialServiceIcons.CanonicalUrlFor(SocialService.Website, "example.com"));
        Assert.Equal("https://example.com", SocialServiceIcons.CanonicalUrlFor(SocialService.Website, "https://example.com"));
        Assert.Equal("https://site.tld/@user", SocialServiceIcons.CanonicalUrlFor(SocialService.Link, "@user@site.tld"));
        Assert.Equal("https://site.tld/@user", SocialServiceIcons.CanonicalUrlFor(SocialService.Fediverse, "@user@site.tld"));
    }

    [Fact]
    public void SocialServiceIcons_LogoData_AllServices()
    {
        foreach (var service in Enum.GetValues<SocialService>())
            Assert.False(string.IsNullOrWhiteSpace(SocialServiceIcons.LogoDataFor(service)), service.ToString());
        Assert.NotEmpty(SocialServiceIcons.LockedIconData);
        Assert.NotEmpty(SocialServiceIcons.DoNotIconData);
        Assert.NotEqual(SocialServiceIcons.LogoDataFor(SocialService.YouTube), SocialServiceIcons.LogoDataFor(SocialService.Twitch));
    }

    [Fact]
    public void SocialServiceIcons_LogoDataForFediverse_KnownAndUnknownSoftware()
    {
        Assert.Equal(SocialServiceIcons.LogoDataForFediverse("peertube"), SocialServiceIcons.LogoDataForFediverse("PeerTube"));
        Assert.Equal(SocialServiceIcons.LogoDataForFediverse("mastodon"), SocialServiceIcons.LogoDataForFediverse("MASTODON"));
        Assert.NotEqual(
            SocialServiceIcons.LogoDataForFediverse("peertube"),
            SocialServiceIcons.LogoDataForFediverse("mastodon"));
        Assert.Equal(SocialServiceIcons.LogoDataForFediverse(null), SocialServiceIcons.LogoDataForFediverse("gotosocial"));
        Assert.NotEqual(SocialServiceIcons.LogoDataForFediverse("peertube"), SocialServiceIcons.LogoDataForFediverse("unknown"));
    }

    [Fact]
    public void SocialEntry_FediverseLogo_ComesFromSoftwareName()
    {
        var entry = new SocialEntry
        {
            Service = SocialService.Fediverse,
            Handle = "@gramps@llamachile.tube",
            ProfileUrl = "https://llamachile.tube/@gramps",
            FediverseSoftware = "peertube",
        };
        Assert.Equal(SocialServiceIcons.LogoDataForFediverse("peertube"), entry.LogoData);
        Assert.NotEqual(SocialServiceIcons.LogoDataFor(SocialService.Link), entry.LogoData);
    }

    [Fact]
    public void SocialServiceIcons_DetectService_ByDomain()
    {
        Assert.Equal(SocialService.YouTube, SocialServiceIcons.DetectService("youtube.com/@handle").service);
        Assert.Equal(SocialService.X, SocialServiceIcons.DetectService("https://x.com/user").service);
        Assert.Equal(SocialService.Instagram, SocialServiceIcons.DetectService("instagram.com/user").service);
        var fediverse = SocialServiceIcons.DetectService("@user@instance.tube");
        Assert.Equal(SocialService.Fediverse, fediverse.service);
        Assert.Equal("@user@instance.tube", fediverse.handle);
        Assert.Equal("https://instance.tube/@user", fediverse.url);
        Assert.Equal(SocialService.GitHub, SocialServiceIcons.DetectService("https://github.com/dev").service);
        Assert.Equal(SocialService.Website, SocialServiceIcons.DetectService("example.com/path").service);
    }

    [Fact]
    public void SocialServiceIcons_DetectService_BareHandle_FallsBackToWebsite()
    {
        Assert.Equal(SocialService.Website, SocialServiceIcons.DetectService("justaname").service);
    }
}