Save version of PreloadSigningAlias

PreloadSigningAlias.cs

using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEditor.Build;
using UnityEditor.Build.Reporting;

[InitializeOnLoad]
public class PreloadSigningAlias : IPostprocessBuildWithReport
{
    private const string Dir = "Library";
    private const string FileName = "keystore.ini";
    private const string KeystorePass = nameof(PlayerSettings.Android.keystorePass);
    private const string KeystoreName = nameof(PlayerSettings.Android.keystoreName);
    private const string KeyaliasName = nameof(PlayerSettings.Android.keyaliasName);
    private const string KeyaliasPass = nameof(PlayerSettings.Android.keyaliasPass);

    public int callbackOrder { get; }

    public void OnPostprocessBuild(BuildReport report)
    {
        var buildResult = report.summary.result;
        var buildSuccess = buildResult == BuildResult.Succeeded || buildResult == BuildResult.Unknown;
        if (!buildSuccess) return;
        var keystorePass = PlayerSettings.Android.keystorePass;
        var keystoreName = PlayerSettings.Android.keystoreName;
        var keyaliasName = PlayerSettings.Android.keyaliasName;
        var keyaliasPass = PlayerSettings.Android.keyaliasPass;
        if (new List<string> {keystorePass, keystoreName, keyaliasPass, keyaliasName}.Any(string.IsNullOrEmpty)) return;
        var kv = new Dictionary<string, string>
        {
            [KeystoreName] = keystoreName,
            [KeystorePass] = keystorePass,
            [KeyaliasName] = keyaliasName,
            [KeyaliasPass] = keyaliasPass,
        };
        var content = string.Join("\n", kv.Select(pair => $"{pair.Key}={pair.Value}"));
        Directory.CreateDirectory(Dir);
        File.WriteAllText($"{Dir}/{FileName}", content);
    }

    static PreloadSigningAlias()
    {
        var path = $"{Dir}/{FileName}";
        if (File.Exists(path))
        {
            var readAllLines = File.ReadAllLines(path);
            foreach (var line in readAllLines)
            {
                var pair = line.Split(new[] {'='}, 2);
                if (pair.Length != 2) continue;
                switch (pair[0])
                {
                    case KeystoreName:
                        PlayerSettings.Android.keystoreName = pair[1];
                        break;
                    case KeystorePass:
                        PlayerSettings.Android.keystorePass = pair[1];
                        break;
                    case KeyaliasName:
                        PlayerSettings.Android.keyaliasName = pair[1];
                        break;
                    case KeyaliasPass:
                        PlayerSettings.Android.keyaliasPass = pair[1];
                        break;
                }
            }
        }
    }
}