modules/project/SPT.Custom/Patches/RedirectClientImageRequestsPatch.cs

using SPT.Reflection.Patching;
using HarmonyLib;
using System;
using System.IO;
using System.Reflection;
using UnityEngine;
using System.Threading.Tasks;

namespace SPT.Custom.Patches
{
    /// <summary>
    /// Redirects Trader and quest images to the SPT folder, not the app data
    /// </summary>
    ///
    public class RedirectClientImageRequestsPatch : ModulePatch
    {
        private static readonly string _sptPath = Path.Combine(Environment.CurrentDirectory, "user", "sptappdata");

        protected override MethodBase GetTargetMethod()
        {
            return AccessTools.Method(typeof(ProfileEndpointFactoryAbstractClass), nameof(ProfileEndpointFactoryAbstractClass.method_26));
        }

        [PatchPrefix]
        public static bool PatchPrefix(string baseUrl, string url, ref Task<Texture2D> __result)
        {
            var texture2D = CacheResourcesPopAbstractClass.Pop<Texture2D>(url.ConvertToResourceLocation());

            if (texture2D != null)
            {
                __result = Task.FromResult(texture2D);
            }
            else
            {
                var path = _sptPath + url;

                if (File.Exists(path))
                {
                    __result = GetTexture0(path);
                }
                else
                {
                    __result = GetTexture1(baseUrl + url, path);
                }
            }

            return false; // Skip original
        }

        public static async Task<Texture2D> GetTexture0(string path)
        {
            var result = await ProfileEndpointFactoryAbstractClass.smethod_0(path);

            return result.Value;
        }

        public static async Task<Texture2D> GetTexture1(string path, string localPath)
        {
            var result = await ProfileEndpointFactoryAbstractClass.smethod_1(path);

            if (result.Succeed)
            {
                try
                {
                    string directoryName = Path.GetDirectoryName(localPath);
                    if (!Directory.Exists(directoryName))
                    {
                        Directory.CreateDirectory(directoryName);
                    }
                    File.WriteAllBytes(localPath, result.Value.EncodeToPNG());
                    result.Value.filterMode = FilterMode.Bilinear;
                }
                catch (UnauthorizedAccessException ex)
                {
                    Debug.LogError("Can't get access to the folder: " + ex);
                }
            }

            return result.Value;
        }
    }
}