ModManager.cs

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using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using HeathenEngineering.SteamworksIntegration;
using HeathenEngineering.SteamworksIntegration.API;
using IniParser.Model;
using Steamworks;
using UnityEngine;
using UnityEngine.UI;
 
[Serializable]
public class ModManager : ModManagerCore
{
    private sealed class WorkshopDownload
    {
        public readonly WorkshopItem item;
 
        public readonly BaseModPackage package;
 
        public readonly bool isUpdate;
 
        public float lastChange;
 
        public float progress;
 
        public string Title => package.title.IsEmpty(item.Title).IsEmpty(item.FileId.ToString());
 
        public WorkshopDownload(BaseModPackage package, float now)
        {
            this.package = package;
            item = (WorkshopItem)package.item;
            isUpdate = package.installed;
            lastChange = now;
        }
    }
 
    public static List<object> ListPluginObject = new List<object>();
 
    public static bool disableMod;
 
    private LoadingScreen _loading;
 
    public List<FileInfo> replaceFiles = new List<FileInfo>();
 
    private HashSet<ulong> _subscribedItems;
 
    private readonly HashSet<ulong> _blockedItems = new HashSet<ulong>();
 
    private int _missingContent;
 
    public static List<string> ListChainLoad => BaseModManager.listChainLoad;
 
    public static DirectoryInfo DirWorkshop => Instance.dirWorkshop;
 
    public static bool IsInitialized => BaseModManager.isInitialized;
 
    public new static ModManager Instance => (ModManager)BaseModManager.Instance;
 
    public override void Init(string path, string defaultPackage = "_Elona")
    {
        base.Init(path, defaultPackage);
        Debug.Log("IsOffline:" + BaseCore.IsOffline);
        IniData elinIni = Core.GetElinIni();
        if (elinIni != null)
        {
            if (BaseCore.IsOffline)
            {
                string key = elinIni.GetKey("path_workshop");
                if (!key.IsEmpty())
                {
                    dirWorkshop = new DirectoryInfo(key);
                }
            }
            else
            {
                string path2 = Path.Combine(App.Client.GetAppInstallDirectory(SteamSettings.behaviour.settings.applicationId), "../../workshop/content/2135150");
                dirWorkshop = new DirectoryInfo(path2);
                elinIni.Global["path_workshop"] = dirWorkshop.FullName;
                Core.SaveElinIni(elinIni);
            }
        }
        if ((!(dirWorkshop?.Exists)) ?? true)
        {
            dirWorkshop = null;
        }
        Debug.Log("Workshop:" + dirWorkshop);
        Debug.Log("Packages:" + BaseModManager.rootMod);
        Debug.Log("Core Mod:" + BaseModManager.rootDefaultPacakge);
    }
 
    public static string FormatLoadOrder(BaseModPackage p)
    {
        string arg = p.dirInfo?.FullName;
        int num = (p.willActivate ? 1 : 0);
        if (ModLoadOrderPreset.IsValidId(p.id))
        {
            return $"{arg},{num},{p.id.Trim()}";
        }
        return "";
    }
 
    public void SaveLoadOrder()
    {
        if (disableMod)
        {
            return;
        }
        List<string> list = new List<string>();
        foreach (BaseModPackage package in packages)
        {
            string str = package.dirInfo?.FullName;
            if (!package.builtin && !str.IsEmpty())
            {
                list.Add(FormatLoadOrder(package));
            }
        }
        File.WriteAllLines(CorePath.PathLoadOrder, list);
    }
 
    public void LoadLoadOrder()
    {
        foreach (BaseModPackage package in packages)
        {
            package.orderIndex = -1;
        }
        string pathLoadOrder = CorePath.PathLoadOrder;
        if (!File.Exists(pathLoadOrder))
        {
            return;
        }
        Dictionary<string, BaseModPackage> dictionary = new Dictionary<string, BaseModPackage>(StringComparer.OrdinalIgnoreCase);
        Dictionary<string, BaseModPackage> dictionary2 = new Dictionary<string, BaseModPackage>();
        foreach (BaseModPackage package2 in packages)
        {
            if (!package2.builtin)
            {
                string text = NormalizeOrderPath(package2.dirInfo?.FullName);
                if (!text.IsEmpty())
                {
                    dictionary.TryAdd(text, package2);
                }
                string text2 = BaseModPackage.NormalizeId(package2.id);
                if (!text2.IsEmpty())
                {
                    dictionary2.TryAdd(text2, package2);
                }
            }
        }
        int num = 0;
        HashSet<BaseModPackage> hashSet = new HashSet<BaseModPackage>();
        string[] array = File.ReadAllLines(pathLoadOrder);
        for (int i = 0; i < array.Length; i++)
        {
            if (ParseLoadOrderLine(array[i], out var path, out var activate, out var id))
            {
                if (!dictionary.TryGetValue(NormalizeOrderPath(path), out var value))
                {
                    dictionary2.TryGetValue(BaseModPackage.NormalizeId(id) ?? "", out value);
                }
                if (value != null && hashSet.Add(value))
                {
                    value.orderIndex = num;
                    value.willActivate = activate;
                    num++;
                }
            }
        }
        static bool ParseLoadOrderLine(string line, out string reference, out bool reference2, out string reference3)
        {
            reference = null;
            reference2 = true;
            reference3 = null;
            if (line.IsEmpty() || line.Trim().IsEmpty())
            {
                return false;
            }
            int num2 = line.LastIndexOf(',');
            if (num2 <= 0)
            {
                return false;
            }
            string text3 = line[(num2 + 1)..].Trim();
            if (text3 == "0" || text3 == "1")
            {
                reference = line[..num2];
                reference2 = text3 == "1";
                return !reference.IsEmpty();
            }
            int num3 = line.LastIndexOf(',', num2 - 1);
            if (num3 <= 0)
            {
                return false;
            }
            string text4 = line[(num3 + 1)..num2].Trim();
            if (text4 != "0" && text4 != "1")
            {
                return false;
            }
            reference = line[..num3];
            reference2 = text4 == "1";
            reference3 = text3;
            return !reference.IsEmpty();
        }
    }
 
    private static string NormalizeOrderPath(string path)
    {
        if (!path.IsEmpty())
        {
            return path.NormalizePath().TrimEnd('/');
        }
        return "";
    }
 
    public static string GetPresetPath(string name)
    {
        return CorePath.PathLoadOrderPreset + name.SanitizeFileName() + ".txt";
    }
 
    public List<FileInfo> ListPresets()
    {
        if (!Directory.Exists(CorePath.PathLoadOrderPreset))
        {
            return new List<FileInfo>();
        }
        return new DirectoryInfo(CorePath.PathLoadOrderPreset).GetFiles("*.txt", SearchOption.TopDirectoryOnly).OrderBy((FileInfo f) => f.Name, StringComparer.OrdinalIgnoreCase).ToList();
    }
 
    public bool SavePreset(string name, out string path)
    {
        path = GetPresetPath(name);
        ModLoadOrderPreset.Preset preset = ModLoadOrderPreset.Save(packages, name, EClass.core.version.GetText());
        if (disableMod || preset.entries.Count == 0)
        {
            return false;
        }
        Directory.CreateDirectory(CorePath.PathLoadOrderPreset);
        File.WriteAllText(path, ModLoadOrderPreset.Serialize(preset));
        return true;
    }
 
    public bool TryLoadPresetFile(FileInfo file, out ModLoadOrderPreset.Preset preset, out string error)
    {
        preset = null;
        string text;
        try
        {
            text = File.ReadAllText(file.FullName);
        }
        catch (Exception ex)
        {
            error = ex.Message;
            return false;
        }
        if (!ModLoadOrderPreset.TryParse(text, out preset, out error))
        {
            return false;
        }
        if (preset.name.IsEmpty())
        {
            preset.name = Path.GetFileNameWithoutExtension(file.Name);
        }
        return true;
    }
 
    public ModLoadOrderPreset.ApplyResult ApplyPreset(ModLoadOrderPreset.Preset preset, bool disableOthers = true)
    {
        ModLoadOrderPreset.ApplyResult result = ModLoadOrderPreset.Apply(packages, preset, disableOthers);
        SaveLoadOrder();
        return result;
    }
 
    public IEnumerator RefreshMods(Action onComplete, bool syncMods)
    {
        if ((bool)_loading)
        {
            UnityEngine.Object.Destroy(_loading.gameObject);
        }
        _loading = Util.Instantiate<LoadingScreen>("LoadingScreen");
        bool flag = !BaseCore.IsOffline && syncMods && UserGeneratedContent.Client.GetNumSubscribedItems() != 0;
        WaitForEndOfFrame awaiter = new WaitForEndOfFrame();
        packages.Clear();
        _subscribedItems = null;
        _blockedItems.Clear();
        _missingContent = 0;
        disableMod |= Application.isEditor && EClass.debug.skipMod;
        LoadLocalPackages();
        LoadCustomPackage();
        if (!disableMod && dirWorkshop != null)
        {
            _loading.Log("Loading workshop contents...");
            if (flag)
            {
                yield return LoadWorkshopPackages();
            }
            LoadCachedWorkshopPackages();
        }
        InitPackagesMeta();
        SortPackages();
        List<BaseModPackage> list = packages.Where((BaseModPackage p) => p.CanActivate && !p.parseError.IsEmpty()).ToList();
        if (list.Count > 0)
        {
            Halt(list);
            yield break;
        }
        _loading.Log($"Total number of mods:{packages.Count}");
        _loading.Log("Activating Mods...");
        yield return awaiter;
        ActivatePackages();
        MapActivatedPackages();
        BaseModManager.isInitialized = true;
        yield return awaiter;
        onComplete?.Invoke();
        if ((bool)_loading)
        {
            UnityEngine.Object.Destroy(_loading.gameObject);
        }
        yield return null;
    }
 
    private void Halt(List<BaseModPackage> broken)
    {
        List<string> list = broken.Select((BaseModPackage p) => p.title.IsEmpty(p.dirInfo?.Name) + ": package.xml does not parse - " + p.parseError).ToList();
        list.Add("Fix the package.xml, or unsubscribe / delete the mod, then restart the game.");
        string text = string.Join("\n", list);
        Debug.LogError("#mod game will not start:\n" + text);
        EGui.CreatePopup(() => new EGui.UpdateInfo(text), (EGui _) => false);
    }
 
    private void SortPackages()
    {
        LoadLoadOrder();
        List<BaseModPackage> list = ModOrder.SolveOrder(packages, useLoadorder: true);
        if (list.Count != packages.Count)
        {
            Debug.LogError($"#mod order {list.Count} of {packages.Count} packages");
            return;
        }
        packages.Clear();
        packages.AddRange(list);
    }
 
    private void MapActivatedPackages()
    {
        foreach (BaseModPackage item in packages.Where((BaseModPackage p) => p.activated && !p.id.IsEmpty()))
        {
            mappedPackages[item.id] = item as ModPackage;
        }
    }
 
    public ModPackage AddPackage(DirectoryInfo dir, bool isInPackages = false)
    {
        ModPackage modPackage = new ModPackage
        {
            dirInfo = new DirectoryInfo(dir.FullName.NormalizePath()),
            installed = true,
            isInPackages = isInPackages,
            Mapping = new FileMapping(dir)
        };
        packages.Add(modPackage);
        return modPackage;
    }
 
    public ModPackage AddWorkshopPackage(WorkshopItem item, bool isInPackages = false)
    {
        bool itemInstallInfo = UserGeneratedContent.Client.GetItemInstallInfo(item.FileId, out var _, out var folderPath, out var _);
        if (folderPath.IsEmpty())
        {
            folderPath = Path.Combine(DirWorkshop.FullName, item.FileId.ToString());
        }
        DirectoryInfo directoryInfo = new DirectoryInfo(folderPath);
        itemInstallInfo &= directoryInfo.Exists;
        ModPackage modPackage = AddPackage(directoryInfo, isInPackages);
        modPackage.installed = itemInstallInfo;
        modPackage.banned = item.IsBanned;
        modPackage.workshopId = item.FileId.ToString();
        modPackage.item = item;
        return modPackage;
    }
 
    public int CountUserMod()
    {
        return packages.Count((BaseModPackage p) => !p.builtin);
    }
 
    public void LoadLocalPackages()
    {
        _loading.Log("Loading local Package...");
        DirectoryInfo[] directories = new DirectoryInfo(BaseModManager.rootMod).GetDirectories();
        Array.Reverse(directories);
        DirectoryInfo[] array = directories;
        foreach (DirectoryInfo directoryInfo in array)
        {
            if (!disableMod || BaseModPackage.IsBuiltinDir(directoryInfo.Name))
            {
                if (directoryInfo.Name == "Mod_FixedPackageLoader")
                {
                    IO.DeleteDirectory(directoryInfo.FullName);
                }
                else
                {
                    AddPackage(directoryInfo, isInPackages: true);
                }
            }
        }
    }
 
    public void LoadCustomPackage()
    {
        _loading.Log("Loading user Custom...");
        DirectoryInfo[] directories = new DirectoryInfo(CorePath.custom).GetDirectories();
        ModPackage package = new ModPackage();
        DirectoryInfo[] array = directories;
        foreach (DirectoryInfo dir in array)
        {
            ParseExtra(dir, package);
        }
    }
 
    public void InitPackagesMeta()
    {
        Text status = _loading.Log("Initializing mods...");
        HashSet<BaseModPackage> hashSet = new HashSet<BaseModPackage>();
        int num = 0;
        foreach (BaseModPackage package in packages)
        {
            num++;
            try
            {
                if (!package.Init())
                {
                    hashSet.Add(package);
                    Debug.LogWarning("Not a package: " + package.dirInfo.FullName);
                    continue;
                }
                if (package.parseError.IsEmpty() && package.id.IsEmpty())
                {
                    hashSet.Add(package);
                    Debug.LogWarning("No <id> in package.xml, skipped: " + package.dirInfo.FullName);
                    continue;
                }
                if (!package.id.IsEmpty())
                {
                    mappedPackages[package.id] = package as ModPackage;
                }
                Debug.Log(package.ToString());
                SetStatus(status, $"Initializing mods {num}/{packages.Count}: {package.title}");
            }
            catch (Exception ex)
            {
                _loading.Log("Mod " + package.title + "/" + package.id + " has failed to initialize, " + ex.Message);
                Debug.LogError(ex);
            }
        }
        if (hashSet.Count > 0)
        {
            packages.RemoveAll(hashSet.Contains);
            _loading.Log($"Ignored {hashSet.Count} folder(s) without a usable package.xml");
        }
        SetStatus(status, $"Initialized {packages.Count} mods");
    }
 
    public void ActivatePackages()
    {
        BaseModManager.listChainLoad.Clear();
        ListPluginObject.Clear();
        ActivatePackageList();
        ModUtil.OnModsActivated();
        ModUtil.LoadTypeFallback();
    }
 
    public void ActivatePackageList()
    {
        Dictionary<string, BaseModPackage> loaded = new Dictionary<string, BaseModPackage>();
        Dictionary<string, BaseModPackage> claimed = new Dictionary<string, BaseModPackage>();
        int num = 0;
        foreach (BaseModPackage package in packages)
        {
            package.blockedBy = null;
            package.langDepError = null;
        }
        Dictionary<string, BaseModPackage> dictionary = new Dictionary<string, BaseModPackage>();
        foreach (BaseModPackage package2 in packages)
        {
            string text = BaseModPackage.NormalizeId(package2.id);
            if (text != null && !package2.hasPublishedPackage)
            {
                dictionary.TryAdd(text, package2);
            }
        }
        foreach (ModPackage item in from p in packages.OfType<ModPackage>()
            where !disableMod || p.builtin
            select p)
        {
            if (!item.IsValidVersion())
            {
                _loading?.Log("Skipped (made for game " + item.version + "): " + item.title + "/" + item.id);
            }
            else
            {
                if (item.banned)
                {
                    continue;
                }
                if (item.CanActivate)
                {
                    BaseModPackage baseModPackage = FindIncompatible(item, loaded, claimed);
                    if (baseModPackage != null)
                    {
                        item.blockedBy = baseModPackage;
                        num++;
                        _loading?.Log("Blocked: " + item.title + "/" + item.id + " <-> " + baseModPackage.title + "/" + baseModPackage.id);
                        continue;
                    }
                    string text2 = UnmetDependency(item, loaded, dictionary);
                    if (text2 != null)
                    {
                        item.langDepError = text2;
                        _loading?.Log("Skipped (" + text2 + "): " + item.title + "/" + item.id);
                        continue;
                    }
                }
                try
                {
                    item.Activate();
                }
                catch (Exception ex)
                {
                    _loading?.Log("Failed to activate mod " + item.title + ": " + ex.Message);
                }
                finally
                {
                    if (item.activated)
                    {
                        BaseModManager.listChainLoad.Add(item.dirInfo.FullName);
                        RegisterLoaded(item, loaded, claimed);
                    }
                }
            }
        }
        if (num > 0)
        {
            Debug.LogWarning($"#mod {num} package(s) skipped due to incompatibility");
        }
    }
 
    private string UnmetDependency(BaseModPackage p, Dictionary<string, BaseModPackage> loaded, Dictionary<string, BaseModPackage> installed)
    {
        if (p.dependency == null)
        {
            return null;
        }
        string[][] dependency = p.dependency;
        foreach (string[] array in dependency)
        {
            if (array == null || array.Length == 0)
            {
                continue;
            }
            BaseModPackage baseModPackage = null;
            BaseModPackage baseModPackage2 = null;
            bool flag = false;
            string[] array2 = array;
            for (int j = 0; j < array2.Length; j++)
            {
                string text = BaseModPackage.NormalizeId(array2[j]);
                if (text == null)
                {
                    continue;
                }
                if (loaded.ContainsKey(text))
                {
                    flag = true;
                    break;
                }
                if (!installed.TryGetValue(text, out var value) || value == p)
                {
                    continue;
                }
                if (packages.IndexOf(value) > packages.IndexOf(p))
                {
                    if (baseModPackage == null)
                    {
                        baseModPackage = value;
                    }
                }
                else if (baseModPackage2 == null)
                {
                    baseModPackage2 = value;
                }
            }
            if (!flag)
            {
                if (baseModPackage != null)
                {
                    return "mod_info_dep_order\t" + baseModPackage.title.IsEmpty(baseModPackage.dirInfo?.Name);
                }
                if (baseModPackage2 != null)
                {
                    return "mod_info_dep_failed\t" + baseModPackage2.title.IsEmpty(baseModPackage2.dirInfo?.Name);
                }
                return "mod_info_dep_missing\t" + string.Join('\t', array);
            }
        }
        return null;
    }
 
    private static BaseModPackage FindIncompatible(BaseModPackage p, Dictionary<string, BaseModPackage> loaded, Dictionary<string, BaseModPackage> claimed)
    {
        if (p.builtin)
        {
            return null;
        }
        string text = BaseModPackage.NormalizeId(p.id);
        if (text == null)
        {
            return null;
        }
        string[][] incompatible = p.incompatible;
        if (incompatible != null)
        {
            string[][] array = incompatible;
            foreach (string[] array2 in array)
            {
                if (array2 == null)
                {
                    continue;
                }
                string[] array3 = array2;
                for (int j = 0; j < array3.Length; j++)
                {
                    string text2 = BaseModPackage.NormalizeId(array3[j]);
                    if (text2 == null)
                    {
                        continue;
                    }
                    BaseModPackage value;
                    if (text2 == text)
                    {
                        Debug.Log("#mod incompatible: '" + p.id + "' self decl, ignored");
                    }
                    else if (loaded.TryGetValue(text2, out value) && value != null)
                    {
                        if (!value.builtin)
                        {
                            return value;
                        }
                        Debug.Log("#mod incompatible: '" + p.id + "' targets builtin '" + value.id + "', ignored");
                    }
                }
            }
        }
        if (claimed.TryGetValue(text, out var value2) && value2 != null && !value2.builtin)
        {
            return value2;
        }
        return null;
    }
 
    private static void RegisterLoaded(BaseModPackage p, Dictionary<string, BaseModPackage> loaded, Dictionary<string, BaseModPackage> claimed)
    {
        if (p.builtin)
        {
            return;
        }
        string text = BaseModPackage.NormalizeId(p.id);
        if (text == null)
        {
            return;
        }
        loaded[text] = p;
        string[][] incompatible = p.incompatible;
        if (incompatible == null)
        {
            return;
        }
        string[][] array = incompatible;
        foreach (string[] array2 in array)
        {
            if (array2 == null)
            {
                continue;
            }
            string[] array3 = array2;
            for (int j = 0; j < array3.Length; j++)
            {
                string text2 = BaseModPackage.NormalizeId(array3[j]);
                if (text2 != null && !(text2 == text))
                {
                    claimed.TryAdd(text2, p);
                }
            }
        }
    }
 
    public IEnumerator LoadWorkshopPackages()
    {
        PublishedFileId_t[] subscribedItems = UserGeneratedContent.Client.GetSubscribedItems();
        if (!subscribedItems.IsEmpty())
        {
            _subscribedItems = subscribedItems.Select((PublishedFileId_t id) => id.m_PublishedFileId).ToHashSet();
            yield return QuerySubscriptions(subscribedItems);
            yield return DownloadSubscriptions();
            if (_missingContent > 0)
            {
                yield return new WaitForSecondsRealtime(3f);
            }
        }
    }
 
    private IEnumerator QuerySubscriptions(PublishedFileId_t[] subscribed)
    {
        WaitForEndOfFrame awaiter = new WaitForEndOfFrame();
        Text status = _loading.Log("Fetching subscriptions...");
        Dictionary<ulong, WorkshopItem> fetched = new Dictionary<ulong, WorkshopItem>();
        bool aborted = false;
        for (int i = 0; i < subscribed.Length; i += 50)
        {
            PublishedFileId_t[] array = subscribed.Skip(i).Take(50).ToArray();
            UgcQuery query = UgcQuery.Get(array);
            bool completed = false;
            bool discard = false;
            SetStatus(status, $"Fetching subscriptions {i + array.Length}/{subscribed.Length}...(Hit ESC to cancel)");
            if (query == null || !query.Execute(OnQueryCompleted))
            {
                Debug.LogWarning("Workshop: steam rejected the subscription query");
                query?.Dispose();
                aborted = true;
                break;
            }
            float deadline = Time.realtimeSinceStartup + 30f;
            while (!completed)
            {
                if (IsCancelRequested() || Time.realtimeSinceStartup > deadline)
                {
                    discard = true;
                    aborted = true;
                    query.Dispose();
                    break;
                }
                yield return awaiter;
            }
            if (aborted)
            {
                Debug.LogWarning("Workshop: subscription query cancelled or timed out");
                break;
            }
            void OnQueryCompleted(UgcQuery result)
            {
                completed = true;
                if (discard)
                {
                    return;
                }
                foreach (WorkshopItem results in result.ResultsList)
                {
                    SteamUGCDetails_t sourceItemDetails = results.SourceItemDetails;
                    if (sourceItemDetails.m_eResult == EResult.k_EResultOK && sourceItemDetails.m_nPublishedFileId.m_PublishedFileId != 0L)
                    {
                        fetched[sourceItemDetails.m_nPublishedFileId.m_PublishedFileId] = results;
                    }
                }
            }
        }
        foreach (WorkshopItem value in fetched.Values)
        {
            if (value.IsBanned)
            {
                _blockedItems.Add(value.FileId.m_PublishedFileId);
                _missingContent++;
            }
            else
            {
                AddWorkshopPackage(value);
            }
        }
        SetStatus(status, $"Fetched {fetched.Count}/{subscribed.Length} subscriptions");
        if (aborted)
        {
            yield break;
        }
        for (int j = 0; j < subscribed.Length; j++)
        {
            PublishedFileId_t publishedFileId_t = subscribed[j];
            if (!fetched.ContainsKey(publishedFileId_t.m_PublishedFileId) && !Directory.Exists(Path.Combine(dirWorkshop.FullName, publishedFileId_t.ToString())))
            {
                _missingContent++;
            }
        }
    }
 
    private IEnumerator DownloadSubscriptions()
    {
        float now = Time.realtimeSinceStartup;
        List<WorkshopDownload> queue = (from p in packages
            where p.item is WorkshopItem workshopItem && (!p.installed || workshopItem.IsNeedsUpdate)
            select new WorkshopDownload(p, now)).ToList();
        if (queue.Count == 0)
        {
            yield break;
        }
        WaitForEndOfFrame awaiter = new WaitForEndOfFrame();
        Text status = _loading.Log($"Downloading {queue.Count} mods...");
        Dictionary<ulong, EResult> results = new Dictionary<ulong, EResult>();
        int total = queue.Count;
        int completed = 0;
        float lastActivity = now;
        float nextStatus = 0f;
        UserGeneratedContent.Client.EventItemDownloaded.AddListener(OnItemDownloaded);
        try
        {
            while (queue.Count > 0)
            {
                now = Time.realtimeSinceStartup;
                for (int num = queue.Count - 1; num >= 0; num--)
                {
                    WorkshopDownload workshopDownload = queue[num];
                    WorkshopItem item = workshopDownload.item;
                    ulong publishedFileId = item.FileId.m_PublishedFileId;
                    string path = null;
                    string reason = null;
                    bool flag = false;
                    EResult value;
                    if (!workshopDownload.package.downloadStarted)
                    {
                        workshopDownload.package.downloadStarted = true;
                        workshopDownload.lastChange = now;
                        if (item.DownloadItem(highPriority: true))
                        {
                            Debug.Log("Start downloading: " + workshopDownload.Title + " | " + $"Installed={item.IsInstalled}, " + $"Update={item.IsNeedsUpdate}, " + $"Downloading={item.IsDownloading}, " + $"Pending={item.IsDownloadPending}");
                            continue;
                        }
                        reason = "cannot start the download";
                    }
                    else if (results.TryGetValue(publishedFileId, out value) && value != EResult.k_EResultOK)
                    {
                        reason = $"download failed ({value})";
                    }
                    else if (IsItemReady(item, out path))
                    {
                        flag = true;
                    }
                    else
                    {
                        if (item.IsDownloadPending)
                        {
                            workshopDownload.lastChange = now;
                            continue;
                        }
                        if (item.IsDownloading)
                        {
                            float downloadCompletion = item.DownloadCompletion;
                            if (downloadCompletion > workshopDownload.progress)
                            {
                                workshopDownload.progress = downloadCompletion;
                                float lastChange;
                                lastActivity = (lastChange = now);
                                workshopDownload.lastChange = lastChange;
                            }
                            continue;
                        }
                        if (!(now - workshopDownload.lastChange > 20f))
                        {
                            continue;
                        }
                        reason = "cannot start the download";
                    }
                    queue.RemoveAt(num);
                    lastActivity = now;
                    if (flag)
                    {
                        completed++;
                        InstallWorkshopPackage(workshopDownload, path);
                    }
                    else
                    {
                        FailWorkshopPackage(workshopDownload, reason);
                    }
                }
                if (queue.Count == 0)
                {
                    break;
                }
                if (IsCancelRequested())
                {
                    AbortDownloads(queue, "cancelled");
                    break;
                }
                if (now - lastActivity > 90f)
                {
                    AbortDownloads(queue, "not responding");
                    break;
                }
                if (now >= nextStatus)
                {
                    nextStatus = now + 0.5f;
                    WorkshopDownload workshopDownload2 = queue.Find((WorkshopDownload d) => d.item.IsDownloading) ?? queue[0];
                    SetStatus(status, $"Downloading mods {completed}/{total}: " + $"{workshopDownload2.Title} {Mathf.FloorToInt(workshopDownload2.progress * 100f)}%...(Hit ESC to cancel)");
                }
                yield return awaiter;
            }
        }
        finally
        {
            UserGeneratedContent.Client.EventItemDownloaded.RemoveListener(OnItemDownloaded);
        }
        SetStatus(status, $"Downloaded {completed}/{total} mods");
        packages.RemoveAll((BaseModPackage p) => p.item is WorkshopItem && !p.installed);
        void OnItemDownloaded(DownloadItemResult_t result)
        {
            results[result.m_nPublishedFileId.m_PublishedFileId] = result.m_eResult;
        }
    }
 
    public void LoadCachedWorkshopPackages()
    {
        HashSet<string> hashSet = packages.Select((BaseModPackage p) => p.dirInfo.FullName).ToHashSet(StringComparer.OrdinalIgnoreCase);
        DirectoryInfo[] directories = dirWorkshop.GetDirectories();
        foreach (DirectoryInfo directoryInfo in directories)
        {
            ulong result;
            bool flag = ulong.TryParse(directoryInfo.Name, out result);
            if ((!flag || !_blockedItems.Contains(result)) && (_subscribedItems == null || (flag && _subscribedItems.Contains(result))) && !hashSet.Contains(new DirectoryInfo(directoryInfo.FullName.NormalizePath()).FullName))
            {
                ModPackage modPackage = AddPackage(directoryInfo);
                if (flag)
                {
                    modPackage.workshopId = directoryInfo.Name;
                }
            }
        }
    }
 
    private void InstallWorkshopPackage(WorkshopDownload download, string path)
    {
        BaseModPackage package = download.package;
        package.installed = true;
        package.dirInfo = new DirectoryInfo(path.NormalizePath());
        if (package is ModPackage modPackage)
        {
            modPackage.Mapping = new FileMapping(package.dirInfo);
        }
        Debug.Log("Downloaded: " + download.Title + " -> " + package.dirInfo.FullName);
    }
 
    private void FailWorkshopPackage(WorkshopDownload download, string reason)
    {
        if (download.isUpdate)
        {
            Debug.LogWarning("Workshop update failed: " + download.Title + ", " + reason);
            return;
        }
        _missingContent++;
        Debug.LogWarning("Workshop download failed: " + download.Title + ", " + reason);
    }
 
    private void AbortDownloads(List<WorkshopDownload> queue, string reason)
    {
        foreach (WorkshopDownload item in queue)
        {
            FailWorkshopPackage(item, reason);
        }
        queue.Clear();
    }
 
    private static bool IsItemReady(WorkshopItem item, out string path)
    {
        path = null;
        if (!item.IsInstalled || item.IsNeedsUpdate || item.IsDownloading || item.IsDownloadPending)
        {
            return false;
        }
        if (UserGeneratedContent.Client.GetItemInstallInfo(item.FileId, out var _, out path, out var _) && !path.IsEmpty())
        {
            return Directory.Exists(path);
        }
        return false;
    }
 
    private static bool IsCancelRequested()
    {
        return UnityEngine.Input.GetKey(KeyCode.Escape);
    }
 
    private static void SetStatus(Text status, string message)
    {
        if ((bool)status)
        {
            status.text = message;
        }
    }
 
    public override void ParseExtra(DirectoryInfo dir, BaseModPackage package)
    {
        ModPackage modPackage = (ModPackage)package;
        switch (dir.Name.ToLower())
        {
        case "talktext":
            modPackage.ParseTalkText(dir);
            break;
        case "map":
            if (!package.builtin)
            {
                modPackage.ParseMap(dir);
            }
            break;
        case "map piece":
            if (!package.builtin)
            {
                modPackage.ParseMapPiece(dir);
            }
            break;
        case "texture replace":
            replaceFiles.AddRange(modPackage.ParseTextureReplace(dir));
            break;
        case "texture":
            modPackage.ParseTexture(dir);
            break;
        case "portrait":
            modPackage.ParsePortrait(dir);
            break;
        case "langmod":
            modPackage.ParseLangMod(dir);
            break;
        case "sound":
            modPackage.ParseSound(dir);
            break;
        case "lang":
            modPackage.AddOrUpdateLang(dir);
            break;
        }
    }
}