using HSchool.Server.Game;
using HSchool.Simulation;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Options;

namespace HSchool.Server.Tests;

public class SchoolStoreTests
{
    [Fact]
    public void LoadAll_SkipsUsersJsonBesideASchoolSave()
    {
        var directory = Directory.CreateTempSubdirectory("h-school-store-");
        try
        {
            File.WriteAllText(
                Path.Combine(directory.FullName, UserStore.FileName),
                """{ "users": [ { "name": "Player" } ] }""");
            File.WriteAllText(
                Path.Combine(directory.FullName, "1.json"),
                """
                {
                  "format": 3,
                  "id": 1,
                  "name": "North",
                  "gameTime": "2012-03-31T06:00:00Z",
                  "running": false,
                  "speedIndex": 0
                }
                """);

            var store = CreateStore(directory.FullName);
            var saves = store.LoadAll();

            var save = Assert.Single(saves);
            Assert.Equal(1, save.Id);
            Assert.Equal("North", save.Name);
        }
        finally
        {
            directory.Delete(recursive: true);
        }
    }

    [Fact]
    public void Save_RoundTripsStickyNotices_AndOmitsThemWhenMissing()
    {
        var directory = Directory.CreateTempSubdirectory("h-school-store-");
        try
        {
            var store = CreateStore(directory.FullName);
            store.Save(new SchoolSave
            {
                Format = 3,
                Id = 2,
                Name = "Sticky",
                GameTime = new DateTime(2012, 3, 31, 6, 0, 0, DateTimeKind.Utc),
                Running = false,
                SpeedIndex = 1,
                Notices =
                [
                    new StickyNoticeSave
                    {
                        Id = 9,
                        DefName = "GenerationFailed",
                        Severity = 2,
                        Pause = true,
                        TtlMs = 0,
                    },
                ],
            });

            var withNotices = Assert.Single(store.LoadAll());
            var sticky = Assert.Single(withNotices.Notices!);
            Assert.Equal(9u, sticky.Id);
            Assert.Equal("GenerationFailed", sticky.DefName);
            Assert.True(sticky.Pause);

            File.WriteAllText(
                Path.Combine(directory.FullName, "3.json"),
                """
                {
                  "format": 3,
                  "id": 3,
                  "name": "Plain",
                  "gameTime": "2012-03-31T06:00:00Z",
                  "running": false,
                  "speedIndex": 0
                }
                """);

            var plain = store.LoadAll().Single(save => save.Id == 3);
            Assert.True(plain.Notices is null || plain.Notices.Count == 0);
        }
        finally
        {
            directory.Delete(recursive: true);
        }
    }

    private static SchoolStore CreateStore(string directory)
    {
        var options = Options.Create(new SimulationOptions { SavesDirectory = directory });
        return new SchoolStore(options, new StubHost(), NullLogger<SchoolStore>.Instance);
    }

    private sealed class StubHost : IHostEnvironment
    {
        public string ApplicationName { get; set; } = "HSchool.Server.Tests";
        public string EnvironmentName { get; set; } = "Development";
        public string ContentRootPath { get; set; } = Path.GetTempPath();
        public IFileProvider ContentRootFileProvider { get; set; } = new NullFileProvider();
    }
}