using HSchool.Content;
using HSchool.People;

namespace HSchool.Simulation.Tests;

public class WorldEventTests
{
    private static readonly DateTime TuesdayNight = new(2012, 4, 3, 5, 59, 0, DateTimeKind.Utc);
    private static readonly DateTime TuesdayMorning = new(2012, 4, 3, 6, 0, 0, DateTimeKind.Utc);
    private static readonly DateTime BeforeFirstBell = new(2012, 4, 3, 8, 29, 0, DateTimeKind.Utc);

    [Fact]
    public void CrossingWorkMorning_YieldsOneDayStart_AndARepeatTickDoesNot()
    {
        using var school = Open(TuesdayNight);

        school.Tick(0.2d, 5d);
        var first = school.DrainWorldEvents();
        Assert.Equal(TuesdayMorning, school.Clock.Time);
        Assert.Equal([EventTriggers.DayStart], first.Select(row => row.Trigger));

        school.Tick(0.2d, 1d);
        Assert.Empty(school.DrainWorldEvents());
    }

    [Fact]
    public void EnteringALessonPeriod_YieldsOneLessonStartForTheSchool()
    {
        using var school = OpenStaffed(BeforeFirstBell);
        Assert.True(school.Roster!.Classes.Count > 1);

        school.Tick(0.2d, 5d);
        var first = school.DrainWorldEvents();
        Assert.Equal(new DateTime(2012, 4, 3, 8, 30, 0, DateTimeKind.Utc), school.Clock.Time);
        Assert.Equal([EventTriggers.LessonStart], first.Select(row => row.Trigger));
        Assert.Single(first);

        school.Tick(0.2d, 5d);
        Assert.Empty(school.DrainWorldEvents());
    }

    private static School Open(DateTime start)
    {
        var (catalog, map) = Vanilla();
        return School.Create(1, "Факты", start, catalog, map);
    }

    private static School OpenStaffed(DateTime start)
    {
        var (catalog, map) = Vanilla();
        var roster = RosterGenerator.Generate(catalog, map, schoolSeed: 1, "Russia", start);
        var pool = ApplicantPool.Create(catalog, roster, schoolSeed: 1, "Russia", start);
        var school = School.Create(1, "Звонок", start, catalog, map);
        school.InstallPeople(roster, seed: 1, "Russia", pool);
        school.ConfigurePresence(weekDays: 5, maxDecisionsPerTick: 10_000);
        return school;
    }

    private static (DefCatalog Catalog, MapLayout Map) Vanilla()
    {
        var root = Path.Combine(AppContext.BaseDirectory, "vanilla");
        var documents = new List<ContentDocument>();
        foreach (var path in Directory.EnumerateFiles(root, "*.*", SearchOption.AllDirectories))
        {
            if (!path.EndsWith(".jsonc", StringComparison.OrdinalIgnoreCase)
                && !path.EndsWith(".json", StringComparison.OrdinalIgnoreCase))
            {
                continue;
            }

            var relative = Path.GetRelativePath(root, path).Replace('\\', '/');
            documents.Add(new ContentDocument(CatalogLoader.CorePackId, relative, File.ReadAllText(path)));
        }

        var catalog = new CatalogLoader().Load([CatalogLoader.CorePackId], documents);
        var map = CatalogLoader.LastDefaultMap([CatalogLoader.CorePackId], documents);
        Assert.NotNull(map);
        return (catalog, map);
    }
}