using System.IO;

namespace NHSE.Core
{
    /// <summary>
    /// Logic for dumping decrypted game files.
    /// </summary>
    /// <seealso cref="GameFileLoader"/>
    public static class GameFileDumper
    {
        /// <summary>
        /// Dumps a copy of the <see cref="sav"/>'s files in their decrypted state to the requested <see cref="path"/>.
        /// </summary>
        /// <param name="sav">Save Data to dump</param>
        /// <param name="path">Path to dump to</param>
        public static void Dump(this HorizonSave sav, string path)
        {
            sav.Main.Dump(path);
            foreach (var p in sav.Players)
            {
                var dir = Path.Combine(path, p.DirectoryName);
                p.Dump(dir);
            }
        }

        /// <summary>
        /// Dumps a copy of the <see cref="player"/>'s files in their decrypted state to the requested <see cref="path"/>.
        /// </summary>
        /// <param name="player">Save Data to dump</param>
        /// <param name="path">Path to dump to</param>
        public static void Dump(this Player player, string path)
        {
            foreach (var pair in player)
                pair.Dump(path);
        }

        /// <summary>
        /// Dumps a copy of the <see cref="pair"/>'s files in their decrypted state to the requested <see cref="path"/>.
        /// </summary>
        /// <param name="pair">Save Data to dump</param>
        /// <param name="path">Path to dump to</param>
        public static void Dump(this EncryptedFilePair pair, string path)
        {
            Dump(path, pair.Data, pair.NameData);
        }

        private static void Dump(string path, byte[] data, string name)
        {
            Directory.CreateDirectory(path);
            var file = Path.Combine(path, name);
            File.WriteAllBytes(file, data);
        }

        /// <summary>
        /// Dumps all villagers in their decrypted state to the requested <see cref="path"/>.
        /// </summary>
        /// <param name="sav">Save Data to dump from</param>
        /// <param name="path">Path to dump to</param>
        public static void DumpVillagers(this MainSave sav, string path)
        {
            for (int i = 0; i < 10; i++)
            {
                var v = sav.GetVillager(i);
                var name = GameInfo.Strings.GetVillager(v.InternalName);
                var dest = Path.Combine(path, $"{name}.nhv");
                File.WriteAllBytes(dest, v.Data);
            }
        }

        /// <summary>
        /// Dumps all villagers in their decrypted state to the requested <see cref="path"/>.
        /// </summary>
        /// <param name="sav">Save Data to dump from</param>
        /// <param name="path">Path to dump to</param>
        public static void DumpDesigns(this MainSave sav, string path)
        {
            for (int i = 0; i < 50; i++)
            {
                var dp = sav.GetDesign(i);
                var name = dp.DesignName;
                var fn = StringUtil.CleanFileName($"{name}.nhd");
                var dest = Path.Combine(path, fn);
                File.WriteAllBytes(dest, dp.Data);
            }
        }
    }
}