// Copyright © 2017-2026 QL-Win Contributors
//
// This file is part of QuickLook program.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using QuickLook.Common.Plugin;
using QuickLook.Common.Plugin.MoreMenu;
using QuickLook.Plugin.ArchiveViewer.ArchiveFile;
using QuickLook.Plugin.ArchiveViewer.ChromiumResourcePackage;
using QuickLook.Plugin.ArchiveViewer.CompoundFileBinary;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows;

namespace QuickLook.Plugin.ArchiveViewer;

public sealed partial class Plugin : IViewer, IMoreMenu
{
    private static readonly string[] _extensions =
    [
        // List of supported archive file extensions
        ".asar",    // Electron archive (used to package Electron app resources)
        ".7z",      // 7-Zip compressed archive (uses LZMA/LZMA2 compression)
        ".bz2",     // bzip2 compressed file (often used with tar, e.g. .tar.bz2)
        ".cb7",     // Comic book archive based on 7z format
        ".cbr",     // Comic book archive based on RAR format
        ".cbt",     // Comic book archive based on TAR format
        ".cbz",     // Comic book archive based on ZIP format
        ".crx",     // Chrome extension package (used for Chrome browser add-ons)
        ".gz",      // gzip compressed file (commonly used with tar, e.g. .tar.gz)
        ".jar",     // Java archive (used for Java applications; ZIP-based)
        ".lz",      // lzip compressed file (uses LZMA compression)
        ".nupkg",   // NuGet package (for distributing .NET libraries; ZIP-based)
        ".snupkg",  // Symbol NuGet package (stores debug symbols; ZIP-based)
        ".rar",     // RAR compressed archive (proprietary compression format)
        ".tar",     // TAR archive (packs multiple files without compression)
        ".tgz",     // Gzipped TAR archive (short for .tar.gz)
        ".vsix",    // Visual Studio extension package (ZIP-based)
        ".xz",      // XZ compressed file (uses LZMA2 compression)
        ".zip",     // ZIP compressed archive (most common compression format)

        // List of supported compound file binary file extensions
        ".cfb",     // Compound File Binary format (used by older Microsoft Office files)
        ".eif",     // QQ emoji file (Compound File Binary format)

        // List of supported chromium resource package file extensions
        ".pak",     // Chromium resource package file v5, used by Chromium-based applications (e.g., Google Chrome)
    ];

    private IDisposable _panel;
    private string _path;

    public int Priority => -5;

    public IEnumerable<IMenuItem> MenuItems => GetMenuItems();

    public void Init()
    {
    }

    public bool CanHandle(string path)
    {
        if (Directory.Exists(path))
            return false;

        if (path.EndsWith(".pak", StringComparison.OrdinalIgnoreCase))
        {
            // Chromium PAK files usually start with header as version
            try
            {
                using var fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                using var br = new BinaryReader(fs);
                var version = br.ReadUInt32();

                // Check for Chromium PAK version
                // if v5 → PASS
                // if v4 → FAIL (NOT Supported)
                if (version == 5) return true;
            }
            catch
            {
                // Ignore file read errors, treat as not handled
            }
            return false;
        }

        return _extensions.Any(ext => path.EndsWith(ext, StringComparison.OrdinalIgnoreCase));
    }

    public void Prepare(string path, ContextObject context)
    {
        _path = path;
        context.PreferredSize = new Size { Width = 800, Height = 400 };
    }

    public void View(string path, ContextObject context)
    {
        if (path.EndsWith(".cfb", StringComparison.OrdinalIgnoreCase)
            || path.EndsWith(".eif", StringComparison.OrdinalIgnoreCase))
        {
            _panel = new CompoundInfoPanel(path);
        }
        else if (path.EndsWith(".pak", StringComparison.OrdinalIgnoreCase))
        {
            _panel = new PakInfoPanel(path);
        }
        else
        {
            _panel = new ArchiveInfoPanel(path);
        }

        context.ViewerContent = _panel;
        context.Title = $"{Path.GetFileName(path)}";

        context.IsBusy = false;
    }

    public void Cleanup()
    {
        GC.SuppressFinalize(this);

        _panel?.Dispose();
        _panel = null;
    }
}