using Microsoft.EntityFrameworkCore;
using SlipItIn.Server.Data;
using SlipItIn.Shared.Models;

namespace SlipItIn.Server.Tests;

/// <summary>
/// Hilfsmethoden zum Erstellen isolierter InMemory-DbContexts und Testdaten.
/// </summary>
public static class TestDbHelper
{
    public static IDbContextFactory<SlipItInDbContext> CreateFactory()
    {
        var options = new DbContextOptionsBuilder<SlipItInDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        return new TestDbContextFactory(options);
    }

    public static User SeedUser(SlipItInDbContext db, string username = "user", string email = "user@test.local", bool isActive = true)
    {
        var user = new User { Username = username, Email = email, PasswordHash = "hash", IsActive = isActive };
        db.Users.Add(user);
        db.SaveChanges();
        return user;
    }

    public static List<Phrase> SeedPhrases(SlipItInDbContext db, int count, bool isActive = true)
    {
        var creator = SeedUser(db, "creator-" + Guid.NewGuid().ToString("N")[..8], Guid.NewGuid().ToString("N")[..8] + "@t.local");
        var phrases = Enumerable.Range(1, count)
            .Select(i => new Phrase { Text = $"Phrase {i}", CreatorId = creator.Id, IsActive = isActive })
            .ToList();
        db.Phrases.AddRange(phrases);
        db.SaveChanges();
        return phrases;
    }

    /// <summary>Erstellt ein Spiel inkl. Host-Spieler über den echten GameService-Pfad (direkt in DB).</summary>
    public static (Game game, Player hostPlayer) SeedGame(SlipItInDbContext db, User host, GameStatus status = GameStatus.Lobby)
    {
        var game = new Game { LobbyCode = Guid.NewGuid().ToString("N")[..6].ToUpper(), HostId = host.Id, Status = status };
        var hostPlayer = new Player { UserId = host.Id, Game = game };
        game.Players.Add(hostPlayer);
        db.Games.Add(game);
        db.SaveChanges();
        return (game, hostPlayer);
    }

    private class TestDbContextFactory(DbContextOptions<SlipItInDbContext> options) : IDbContextFactory<SlipItInDbContext>
    {
        public SlipItInDbContext CreateDbContext() => new(options);
        public Task<SlipItInDbContext> CreateDbContextAsync(CancellationToken cancellationToken = default)
            => Task.FromResult(new SlipItInDbContext(options));
    }
}