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

namespace ytLive.Tests;

/// <summary>
/// TASK 39 Good Dog: the YPP pull-out, one integration test, real-app + temp-DB
/// pattern (mirrors BroadcastPullOutTests / WindowBackdropIntegrationTests).
/// Two sections under one [Fact]: (1) a connected channel captures a snapshot
/// through the VM — progress props populate, the snapshot persists to SQLite,
/// the manual checklist round-trips the Settings store, and the drawer commands
/// toggle; (2) a real MainWindow enforces one-open-at-a-time exclusivity between
/// the Stream Settings and YPP drawers.
/// </summary>
[Collection("RealApp")]
public sealed class YppPullOutTests
{
    private readonly RealAppHost _app;

    public YppPullOutTests(RealAppHost app) => _app = app;

    /// <summary>Returns canned data with no network — the fake bypasses every API call.</summary>
    private sealed class FakeChannelStats : ChannelStatsService
    {
        public FakeChannelStats(YppStatSnapshot snapshot)
            : base(new YouTubeAuthService("test-client", "test-secret")) => _snapshot = snapshot;

        private readonly YppStatSnapshot _snapshot;

        public override Task<YppStatSnapshot?> CaptureCurrentAsync()
            => Task.FromResult<YppStatSnapshot?>(_snapshot);
    }

    [Fact]
    public void Ypp_LoadsSnapshot_PersistsChecklist_And_DrawerExcludesBroadcast()
    {
        _app.Run(Run);
    }

    private void Run()
    {
        var tempDb = Path.Combine(Path.GetTempPath(), $"ytLlive-ypp-{Guid.NewGuid():N}.db");
        MainViewModel.LayoutPathOverride = tempDb;
        MainWindow? window = default;
        try
        {
            using (var schema = new LayoutStore(tempDb)) { }
            SqliteConnection.ClearAllPools();

            // ─── Section 1: connected VM captures + persists ───
            var snapshot = new YppStatSnapshot
            {
                CapturedAtUtc = DateTime.UtcNow,
                SubscriberCount = 350,
                VideoCount = 42,
                TotalViews = 12_345,
                UploadsLast90Days = 2,
                CommunityGuidelinesGoodStanding = true,
                CopyrightStrikesGoodStanding = true,
                ContentIdClaimsGoodStanding = true,
                OverallGoodStanding = true,
            };

            var vm = new YppTrackerViewModel(
                () => new LayoutStore(tempDb),
                () => new FakeChannelStats(snapshot),
                () => true,
                () => "Test Channel");

            vm.IsDrawerOpen = true;
            Assert.True(vm.IsDrawerOpen);
            vm.IsDrawerOpen = false;

            vm.RefreshAsync().GetAwaiter().GetResult();
            Assert.True(vm.HasSnapshot);
            Assert.Equal(350, vm.SubscriberCount);
            Assert.Equal(2, vm.UploadsLast90Days);
            Assert.True(vm.OverallGoodStanding);
            Assert.Equal("Test Channel", vm.DisplayName);
            Assert.Equal("350 / 500", vm.Tier1SubsText);
            Assert.Equal("350 / 1,000", vm.Tier2SubsText);
            Assert.Equal(0.7, vm.Tier1SubsProgress, 3);
            Assert.Equal(154, vm.Tier1SubsBarWidth, 0);
            Assert.True(vm.Tier2SubsBarWidth < vm.Tier1SubsBarWidth);
            Assert.StartsWith("Updated today", vm.LastUpdatedText);

            // The snapshot persisted so a later analytics slice has history.
            using (var reader = new LayoutStore(tempDb))
            {
                var history = reader.LoadYppSnapshots();
                Assert.Single(history);
                Assert.Equal(350, history[0].SubscriberCount);
                Assert.Equal(2, history[0].UploadsLast90Days);
            }

            // The self-reported checklist round-trips the Settings store.
            vm.TwoFactorEnabled = true;
            vm.AdSenseLinked = false;
            using (var reader = new LayoutStore(tempDb))
            {
                var (twoFactor, adsense) = reader.LoadYppChecklist();
                Assert.True(twoFactor);
                Assert.False(adsense);
            }

            // ─── Section 2: real window enforces one-open-at-a-time ───
            window = new MainWindow();
            var model = (MainViewModel)window.DataContext;
            Assert.False(model.BroadcastForm.IsDrawerOpen);
            Assert.False(model.Ypp.IsDrawerOpen);

            model.Ypp.ToggleDrawerCommand.Execute(null);
            Assert.True(model.Ypp.IsDrawerOpen);
            Assert.False(model.BroadcastForm.IsDrawerOpen, "opening YPP must leave Stream Settings closed");

            model.BroadcastForm.ToggleDrawerCommand.Execute(null);
            Assert.True(model.BroadcastForm.IsDrawerOpen);
            Assert.False(model.Ypp.IsDrawerOpen, "opening Stream Settings must close YPP");

            model.BroadcastForm.ToggleDrawerCommand.Execute(null);
            Assert.False(model.BroadcastForm.IsDrawerOpen);

            model.Ypp.ToggleDrawerCommand.Execute(null);
            Assert.True(model.Ypp.IsDrawerOpen);
            model.Ypp.CloseDrawerCommand.Execute(null);
            Assert.False(model.Ypp.IsDrawerOpen);
        }
        finally
        {
            window?.Close();
            MainViewModel.LayoutPathOverride = null;
            SqliteConnection.ClearAllPools();
            try { File.Delete(tempDb); } catch { /* best-effort cleanup */ }
        }
    }
}