using System.Collections.Generic;
using BurnOutSharp.ExecutableType.Microsoft.PE;
using BurnOutSharp.Interfaces;
using BurnOutSharp.Matching;

namespace BurnOutSharp.ProtectionType
{
    // TODO: Do more research into the Cucko protection:
    //      - Reference to `EASTL` and `EAStdC` are standard for EA products and does not indicate Cucko by itself
    //      - There's little information outside of PiD detection that actually knows about Cucko
    //      - Cucko is confirmed to, at least, use DMI checks.
    public class Cucko : IPortableExecutableCheck
    {
        /// <inheritdoc/>
        public string CheckPortableExecutable(string file, PortableExecutable pex, bool includeDebug)
        {
            // Get the sections from the executable, if possible
            var sections = pex?.SectionTable;
            if (sections == null)
                return null;

            // Get the .text section, if it exists
            if (pex.TextSectionRaw == null)
                return null;

            var matchers = new List<ContentMatchSet>
            {
                // Confirmed to detect most examples known of Cucko. The only known exception is the version of "TSLHost.dll" included on Redump entry 36119.
                // ŠU‰8...…™...ŠUŠ8T...
                new ContentMatchSet(new byte?[]
                {
                    0x8A, 0x55, 0x89, 0x38, 0x14, 0x1E, 0x0F, 0x85,
                    0x99, 0x00, 0x00, 0x00, 0x8A, 0x55, 0x8A, 0x38,
                    0x54, 0x1E, 0x01, 0x0F
                }, "Cucko (EA Custom)")
            };

            return MatchUtil.GetFirstMatch(file, pex.TextSectionRaw, matchers, includeDebug);
        }
    }
}