using System;
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEditor.Build.Reporting;
using UnityEngine;

namespace ES.EditorTools
{
    /// <summary>
    /// ES Android 빌드 메뉴 (APK · AAB).
    /// 씬 목록 = EditorBuildSettings(활성 씬) · 버전·패키지명 = PlayerSettings 를 그대로 읽는다.
    /// CLI: unity build "<project>" --target Android --execute-method ES.EditorTools.ESBuildMenu.BuildApkCli
    /// </summary>
    public static class ESBuildMenu
    {
        const string MenuRoot = "ES/Build/";
        const string LogTag = "[ESBuild]";
        const string OutputFolder = "Builds/Android";

        [MenuItem(MenuRoot + "Android APK (Development)", priority = 1)]
        static void MenuApkDev() => Build(aab: false, development: true);

        [MenuItem(MenuRoot + "Android APK (Release)", priority = 2)]
        static void MenuApkRelease() => Build(aab: false, development: false);

        [MenuItem(MenuRoot + "Android AAB (Release)", priority = 3)]
        static void MenuAab() => Build(aab: true, development: false);

        [MenuItem(MenuRoot + "Open Build Folder", priority = 20)]
        static void MenuOpenFolder()
        {
            string dir = GetOutputDir();
            Directory.CreateDirectory(dir);
            EditorUtility.RevealInFinder(dir);
        }

        [MenuItem(MenuRoot + "Android APK (Development)", true)]
        [MenuItem(MenuRoot + "Android APK (Release)", true)]
        [MenuItem(MenuRoot + "Android AAB (Release)", true)]
        static bool ValidateBuild() => !EditorApplication.isPlayingOrWillChangePlaymode && !EditorApplication.isCompiling;

        // CLI 진입점 (batchmode) — 실패 시 종료 코드 1
        public static void BuildApkCli() => ExitWith(Build(aab: false, development: HasArg("-esDevelopment")));
        public static void BuildAabCli() => ExitWith(Build(aab: true, development: false));

        public static bool Build(bool aab, bool development) => Build(aab, development, !Application.isBatchMode);

        /// <param name="interactive">false = 완료 대화상자 생략 (CLI eval 로 GUI 에디터에서 호출할 때)</param>
        public static bool Build(bool aab, bool development, bool interactive)
        {
            if (EditorApplication.isPlayingOrWillChangePlaymode)
            {
                Debug.LogError($"{LogTag} Play 중에는 빌드할 수 없습니다.");
                return false;
            }

            string[] scenes = EditorBuildSettings.scenes.Where(s => s.enabled).Select(s => s.path).ToArray();
            if (scenes.Length == 0)
            {
                Debug.LogError($"{LogTag} Build Settings 에 활성 씬이 없습니다.");
                return false;
            }

            if (EditorUserBuildSettings.activeBuildTarget != BuildTarget.Android)
            {
                Debug.Log($"{LogTag} 빌드 타깃을 Android 로 전환합니다.");
                if (!EditorUserBuildSettings.SwitchActiveBuildTarget(BuildTargetGroup.Android, BuildTarget.Android))
                {
                    Debug.LogError($"{LogTag} Android 타깃 전환 실패 (Android 모듈 설치 확인).");
                    return false;
                }
            }

            if (!PlayerSettings.Android.useCustomKeystore)
                Debug.LogWarning($"{LogTag} 사용자 키스토어 미설정 — 디버그 키로 서명됩니다 (스토어 업로드 불가).");

            string dir = GetOutputDir();
            Directory.CreateDirectory(dir);
            string fileName = string.Format("{0}_{1}_{2}{3}_{4}.{5}",
                Sanitize(PlayerSettings.productName),
                PlayerSettings.bundleVersion,
                PlayerSettings.Android.bundleVersionCode,
                development ? "_dev" : "",
                DateTime.Now.ToString("yyyyMMdd_HHmm"),
                aab ? "aab" : "apk");
            string outPath = Path.Combine(dir, fileName);

            bool prevAab = EditorUserBuildSettings.buildAppBundle;
            EditorUserBuildSettings.buildAppBundle = aab;
            try
            {
                var options = new BuildPlayerOptions
                {
                    scenes = scenes,
                    locationPathName = outPath,
                    target = BuildTarget.Android,
                    targetGroup = BuildTargetGroup.Android,
                    options = development ? BuildOptions.Development : BuildOptions.None,
                };

                Debug.Log($"{LogTag} 시작 — {(aab ? "AAB" : "APK")} · 씬 {scenes.Length}개 ({string.Join(", ", scenes.Select(Path.GetFileNameWithoutExtension))}) · {outPath}");
                BuildReport report = BuildPipeline.BuildPlayer(options);
                BuildSummary s = report.summary;
                bool ok = s.result == BuildResult.Succeeded;

                string msg = ok
                    ? $"{LogTag} 성공 — {outPath} · {new FileInfo(outPath).Length / (1024f * 1024f):F1} MB · {s.totalTime.TotalSeconds:F0} s"
                    : $"{LogTag} 실패 — result={s.result} · errors={s.totalErrors}";
                if (ok) Debug.Log(msg); else Debug.LogError(msg);

                if (interactive)
                {
                    if (ok && EditorUtility.DisplayDialog("ES Build", msg, "폴더 열기", "닫기"))
                        EditorUtility.RevealInFinder(outPath);
                    else if (!ok)
                        EditorUtility.DisplayDialog("ES Build", msg + "\nConsole 을 확인하세요.", "확인");
                }
                return ok;
            }
            finally
            {
                EditorUserBuildSettings.buildAppBundle = prevAab;
            }
        }

        static string GetOutputDir() => Path.Combine(Directory.GetParent(Application.dataPath).FullName, OutputFolder);

        static string Sanitize(string name)
        {
            foreach (char c in Path.GetInvalidFileNameChars()) name = name.Replace(c, '_');
            return name.Replace(' ', '_');
        }

        static bool HasArg(string arg) => Environment.GetCommandLineArgs().Contains(arg);

        static void ExitWith(bool ok)
        {
            if (Application.isBatchMode) EditorApplication.Exit(ok ? 0 : 1);
        }
    }
}