using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace BurnOutSharp.ProtectionType
{
    public class CDLock : IPathCheck
    {
        public static string CheckContents(byte[] fileContent, bool includePosition = false)
        {
            // "2" + (char)0xF2 + (char)0x02 + (char)0x82 + (char)0xC3 + (char)0xBC + (char)0x0B + "$" + (char)0x99 + (char)0xAD + "'C" + (char)0xE4 + (char)0x9D + "st" + (char)0x99 + (char)0xFA + "2$" + (char)0x9D + ")4" + (char)0xFF + "t"
            byte[] check = new byte[] { 0x32, 0xF2, 0x02, 0x82, 0xC3, 0xBC, 0x0B, 0x24, 0x99, 0xAD, 0x27, 0x43, 0xE4, 0x9D, 0x73, 0x74, 0x99, 0xFA, 0x32, 0x24, 0x9D, 0x29, 0x34, 0xFF, 0x74 };
            if (fileContent.Contains(check, out int position))
                return "CD-Lock" + (includePosition ? $" (Index {position})" : string.Empty);

            return null;
        }

        /// <inheritdoc/>
        public string CheckPath(string path, IEnumerable<string> files, bool isDirectory)
        {
            if (isDirectory)
            {
                if (files.Any(f => Path.GetExtension(f).Trim('.').Equals("AFP", StringComparison.OrdinalIgnoreCase)))
                    return "CD-Lock";
            }
            else
            {
                if (Path.GetExtension(path).Trim('.').Equals("AFP", StringComparison.OrdinalIgnoreCase))
                    return "CD-Lock";
            }

            return null;
        }
    }
}