Unity Android build keystore tool

BuildUtility.cs

using System.IO;
using UnityEditor;
using UnityEngine;

namespace Assets.Editor
{
    /// <summary>
    /// Utiltiy for making Android builds that automatically sets up the 
    /// keystore.
    /// </summary>
    public class BuildUtility
    {
        private const string AndroidBuildLocationPref = "AndroidBuildLocation";
        private const string iOSBuildLocationPref = "iOSBuildLocation";
        private const string AndroidBuildConfigFile = "android-build-settings.json";

        [MenuItem("Tools/Build Android", false, 100)]
        public static void BuildAndroidMenu()
        {
            BuildAndroidPrompt(false);
        }

        [MenuItem("Tools/Build Android (development)", false, 101)]
        public static void BuildAndroidMenuDev()
        {
            BuildAndroidPrompt(true);
        }

        [MenuItem("Tools/Set up Android keystore", false, 102)]
        public static void SetupKeystoreMenu()
        {
            SetupKeystore(GetBuildConfig());
        }

        private static void SetupKeystore(BuildConfig config)
        {
            PlayerSettings.Android.keystoreName = config.KeystoreName;
            PlayerSettings.Android.keystorePass = config.KeystorePassword;
            PlayerSettings.Android.keyaliasName = config.AliasName;
            PlayerSettings.Android.keyaliasPass = config.AliasPassword;
        }

        private static BuildConfig GetBuildConfig()
        {
            var buildConfigFile = File.ReadAllText(AndroidBuildConfigFile);
            return JsonUtility
                .FromJson<BuildConfig>(buildConfigFile);
        }

        public static void BuildAndroidPrompt(bool debug)
        {
            var buildLocation = GetLastAndroidBuildLocation();
            var buildFolder = string.IsNullOrEmpty(buildLocation)
                ? string.Empty
                : Path.GetDirectoryName(buildLocation);
            var buildName = string.IsNullOrEmpty(buildLocation)
                ? string.Empty
                : Path.GetFileName(buildLocation);

            var path = EditorUtility
                .SaveFilePanel("Build", buildFolder, buildName, "apk");

            if (!string.IsNullOrEmpty(path))
            {
                EditorPrefs.SetString(AndroidBuildLocationPref, path);
                MakeAndroidBuild(path, debug);
            }
        }

        private static void MakeAndroidBuild(string buildPath, bool debug)
        {
            var config = GetBuildConfig();
            SetupKeystore(config);

            var buildResult = BuildPipeline.BuildPlayer(
                config.Levels,
                buildPath,
                BuildTarget.Android,
                debug 
                    ? BuildOptions.Development & BuildOptions.AllowDebugging
                    : BuildOptions.None
            );

            Debug.Log("Build finished, result: " + buildResult);
        }

        private static string GetLastAndroidBuildLocation()
        {
            return EditorPrefs.GetString(AndroidBuildLocationPref);
        }

        private class BuildConfig
        {
            public string KeystoreName;

            public string KeystorePassword;

            public string AliasName;

            public string AliasPassword;

            public string[] Levels;
        }
    }
}