// <copyright file="GameMapsInitializerBase.cs" company="MUnique">
// Licensed under the MIT License. See LICENSE file in the project root for full license information.
// </copyright>

namespace MUnique.OpenMU.Persistence.Initialization;

using MUnique.OpenMU.DataModel.Configuration;

/// <summary>
/// Base class which initializes game maps.
/// </summary>
public abstract class GameMapsInitializerBase : InitializerBase, IGameMapsInitializer
{
    private IList<IMapInitializer>? _mapInitializers;

    /// <summary>
    /// Initializes a new instance of the <see cref="GameMapsInitializerBase"/> class.
    /// </summary>
    /// <param name="context">The context.</param>
    /// <param name="gameConfiguration">The game configuration.</param>
    protected GameMapsInitializerBase(IContext context, GameConfiguration gameConfiguration)
        : base(context, gameConfiguration)
    {
    }

    /// <summary>
    /// Gets the map initializer types.
    /// </summary>
    protected abstract IEnumerable<Type> MapInitializerTypes { get; }

    /// <summary>
    /// Gets the map initializers.
    /// </summary>
    private IList<IMapInitializer> MapInitializers => this._mapInitializers ??= this.CreateInitializers();

    /// <inheritdoc />
    public override void Initialize()
    {
        foreach (var mapInitializer in this.MapInitializers)
        {
            mapInitializer.Initialize();
        }
    }

    /// <summary>
    /// Sets the safezone maps.
    /// Needs to be called after the context has been saved, otherwise referencing between the maps will fail.
    /// </summary>
    public void SetSafezoneMaps()
    {
        foreach (var mapInitializer in this.MapInitializers)
        {
            mapInitializer.SetSafezoneMap();
        }
    }

    private IList<IMapInitializer> CreateInitializers()
    {
        var parameters = new object[] { this.Context, this.GameConfiguration };
        return this.MapInitializerTypes
            .Select(type => type.GetConstructors().First().Invoke(parameters))
            .OfType<IMapInitializer>()
            .ToList();
    }
}