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using System;
using System.IO;
using Microsoft.Win32;
using StardewModdingAPI.Toolkit;
using StardewModdingAPI.Toolkit.Framework.GameScanning;
using StardewModdingAPI.Toolkit.Utilities;
namespace StardewModdingAPI.Installer.Framework
{
/// <summary>The installer context.</summary>
internal class InstallerContext
{
/*********
** Fields
*********/
/// <summary>The <see cref="Environment.OSVersion"/> value that represents Windows 7.</summary>
private readonly Version Windows7Version = new Version(6, 1);
/// <summary>The underlying toolkit game scanner.</summary>
private readonly GameScanner GameScanner = new GameScanner();
/*********
** Accessors
*********/
/// <summary>The current OS.</summary>
public Platform Platform { get; }
/// <summary>The human-readable OS name and version.</summary>
public string PlatformName { get; }
/// <summary>The name of the Stardew Valley executable.</summary>
public string ExecutableName { get; }
/// <summary>Whether the installer is running on Windows.</summary>
public bool IsWindows => this.Platform == Platform.Windows;
/// <summary>Whether the installer is running on a Unix OS (including Linux or macOS).</summary>
public bool IsUnix => !this.IsWindows;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
public InstallerContext()
{
this.Platform = EnvironmentUtility.DetectPlatform();
this.PlatformName = EnvironmentUtility.GetFriendlyPlatformName(this.Platform);
this.ExecutableName = EnvironmentUtility.GetExecutableName(this.Platform);
}
/// <summary>Get the installer's version number.</summary>
public ISemanticVersion GetInstallerVersion()
{
var raw = this.GetType().Assembly.GetName().Version;
return new SemanticVersion(raw);
}
/// <summary>Get whether the current system has .NET Framework 4.5 or later installed. This only applies on Windows.</summary>
/// <exception cref="NotSupportedException">The current platform is not Windows.</exception>
public bool HasNetFramework45()
{
switch (this.Platform)
{
case Platform.Windows:
using (RegistryKey versionKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full"))
return versionKey?.GetValue("Release") != null; // .NET Framework 4.5+
default:
throw new NotSupportedException("The installed .NET Framework version can only be checked on Windows.");
}
}
/// <summary>Get whether the current system has XNA Framework installed. This only applies on Windows.</summary>
/// <exception cref="NotSupportedException">The current platform is not Windows.</exception>
public bool HasXna()
{
switch (this.Platform)
{
case Platform.Windows:
using (RegistryKey key = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\XNA\Framework"))
return key != null; // XNA Framework 4.0+
default:
throw new NotSupportedException("The installed XNA Framework version can only be checked on Windows.");
}
}
/// <summary>Whether the current OS supports newer versions of .NET Framework.</summary>
public bool CanInstallLatestNetFramework()
{
return Environment.OSVersion.Version >= this.Windows7Version; // Windows 7+
}
/// <summary>Get whether a folder seems to contain the game files.</summary>
/// <param name="dir">The folder to check.</param>
public bool LooksLikeGameFolder(DirectoryInfo dir)
{
return this.GameScanner.LooksLikeGameFolder(dir);
}
}
}
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