pkNX/pkNX.Game/GameManager.cs

using System;
using pkNX.Containers;
using pkNX.Structures;

namespace pkNX.Game
{
    /// <summary>
    /// Manages fetching of game data.
    /// </summary>
    public abstract class GameManager
    {
        protected readonly GameLocation ROM;
        protected readonly TextManager Text; // GameText
        protected readonly GameFileMapping FileMap;
        public readonly GameInfo Info;
        private int _language;

        public string PathExeFS => ROM.ExeFS;
        public string PathRomFS => ROM.RomFS;

        /// <summary>
        /// Language to use when fetching string &amp; graphic assets.
        /// </summary>
        public int Language
        {
            get => _language;
            set
            {
                if (value == _language)
                    return;
                _language = value;
                Text?.ClearCache();
            }
        }

        /// <summary>
        /// Current <see cref="GameVersion"/> the data represents.
        /// </summary>
        public GameVersion Game => ROM.Game;

        /// <summary>
        /// Initializes a new <see cref="GameManager"/> for the input <see cref="GameLocation"/> with initial <see cref="Language"/>.
        /// </summary>
        /// <param name="rom"></param>
        /// <param name="language"></param>
        protected GameManager(GameLocation rom, int language)
        {
            ROM = rom;
            Language = language;
            FileMap = new GameFileMapping(rom);
            Text = new TextManager(Game);
            Info = new GameInfo(Game);
        }

        /// <summary>
        /// Fetches a <see cref="GameFile"/> from the Game data.
        /// </summary>
        /// <param name="file">File type to fetch</param>
        /// <returns>Container that contains the game data requested.</returns>
        /// <remarks>Sugar for the other <see cref="GetFile"/> method.</remarks>
        public IFileContainer this[GameFile file] => GetFile(file);

        /// <summary>
        /// Fetches a <see cref="GameFile"/> from the Game data.
        /// </summary>
        /// <param name="file">File type to fetch</param>
        /// <returns>Container that contains the game data requested.</returns>
        public IFileContainer GetFile(GameFile file) => FileMap.GetFile(file, Language);

        /// <summary>
        /// Fetches strings for the input <see cref="TextName"/>.
        /// </summary>
        /// <param name="text">Text file to fetch</param>
        /// <returns>Array of strings from the requested text file.</returns>
        public string[] GetStrings(TextName text)
        {
            var arc = this[GameFile.GameText];
            var lines = Text.GetStrings(text, arc);
            return lines;
        }

        /// <summary>
        /// Saves all open files and finalizes the ROM data.
        /// </summary>
        /// <param name="closing">Skip re-initialization of game data.</param>
        public void SaveAll(bool closing)
        {
            Terminate();
            FileMap.SaveAll();
            if (!closing)
                Initialize();
        }

        public virtual void Initialize()
        {
            SetMitm();
        }

        protected abstract void Terminate();
        protected abstract void SetMitm();

        public FolderContainer GetFilteredFolder(GameFile type, Func<string, bool> filter = null)
        {
            var c = (FolderContainer)this[type];
            c.Initialize(filter);
            return c;
        }

        public static GameManager GetManager(GameLocation loc, int language)
        {
            return loc.Game switch
            {
                GameVersion.GP or GameVersion.GE or GameVersion.GG => new GameManagerGG(loc, language),
                GameVersion.SW or GameVersion.SH or GameVersion.SWSH => new GameManagerSWSH(loc, language),
                GameVersion.PLA => new GameManagerPLA(loc, language),
                _ => throw new ArgumentException(nameof(loc.Game))
            };
        }
    }
}