using System;
using Dalamud.Game.Text.SeStringHandling;
using Dalamud.Hooking;

namespace ExpandedSearchInfo; 

public class GameFunctions : IDisposable {
    private Plugin Plugin { get; }

    private delegate byte SearchInfoDownloadedDelegate(IntPtr data, IntPtr a2, IntPtr searchInfoPtr, IntPtr a4);

    private readonly Hook<SearchInfoDownloadedDelegate>? _searchInfoDownloadedHook;

    internal delegate void ReceiveSearchInfoEventDelegate(uint objectId, SeString info);

    internal event ReceiveSearchInfoEventDelegate? ReceiveSearchInfo;

    internal GameFunctions(Plugin plugin) {
        this.Plugin = plugin;

        var sidPtr = this.Plugin.SigScanner.ScanText("48 89 5C 24 ?? 48 89 6C 24 ?? 56 48 83 EC 20 49 8B E8 8B DA");
        this._searchInfoDownloadedHook = this.Plugin.GameInteropProvider.HookFromAddress<SearchInfoDownloadedDelegate>(sidPtr, this.SearchInfoDownloaded);
        this._searchInfoDownloadedHook.Enable();
    }

    public void Dispose() {
        this._searchInfoDownloadedHook?.Dispose();
    }

    private unsafe byte SearchInfoDownloaded(IntPtr data, IntPtr a2, IntPtr searchInfoPtr, IntPtr a4) {
        var result = this._searchInfoDownloadedHook!.Original(data, a2, searchInfoPtr, a4);

        try {
            // Updated: 4.5
            var actorId = *(uint*) (data + 48);

            var searchInfo = Util.ReadRawSeString(searchInfoPtr);

            this.ReceiveSearchInfo?.Invoke(actorId, searchInfo);
        } catch (Exception ex) {
            Plugin.Log.Error(ex, "Error in SearchInfoDownloaded hook");
        }

        return result;
    }
}