import 'package:flutter/material.dart';

import '../app/app_controller.dart';
import '../app/settings.dart';
import 'settings_page.dart';
import 'theme.dart';
import '../l10n/tr.dart';
import 'app_bar/app_top_bar.dart';
import 'app_bar/app_nav_buttons.dart';
import 'app_bar/usage_view.dart';

export 'app_bar/app_nav_buttons.dart';
export 'app_bar/app_top_bar.dart';
export 'app_bar/swipe_nav.dart';
export 'app_bar/usage_view.dart';

/// 환경 설정 · 종료 버튼. 모든 화면의 위쪽 막대 맨 오른쪽에 같은 크기로 놓는다.
class AppActions extends StatelessWidget {
  /// 직접 주지 않으면 [AppScope] 의 것을 쓴다
  final AppController? c;
  final VoidCallback? onExit;

  /// 환경 설정 화면 자신: 설정 버튼을 "지금 여기" 로 표시하고 누를 수 없게
  final bool onSettingsPage;

  /// 창이 좁을 때 CPU · MEM · DISK 를 숨긴다 (버튼 자리는 그대로)
  final bool showUsage;

  const AppActions({super.key, this.c, this.onExit, this.onSettingsPage = false, this.showUsage = true});

  @override
  Widget build(BuildContext context) {
    final scope = AppScope.maybeOf(context);
    final controller = c ?? scope?.controller;
    final exit = onExit ?? scope?.onExit;
    if (controller == null && exit == null) return const SizedBox();
    final usage = controller?.usage;
    final compact = isCompact(context);
    if (compact) {
      return Row(mainAxisSize: MainAxisSize.min, children: [
        if (controller != null)
          IconButton(
            tooltip: tr('환경 설정'),
            icon: Icon(onSettingsPage ? Icons.settings : Icons.settings_outlined,
                color: onSettingsPage ? JjColors.accent : null),
            onPressed: onSettingsPage
                ? null
                : () => Navigator.push(context, MaterialPageRoute<void>(builder: (_) => SettingsPage(c: controller))),
          ),
        PopupMenuButton<String>(
          tooltip: tr('화면 크기 · 종료'),
          icon: const Icon(Icons.more_vert),
          onSelected: (v) {
            final s = controller?.settings;
            switch (v) {
              case 'bigger' when s != null:
                controller!.updateSettings((x) => x.display.scale = DisplaySettings.clampScale(s.display.scale + 0.1));
              case 'smaller' when s != null:
                controller!.updateSettings((x) => x.display.scale = DisplaySettings.clampScale(s.display.scale - 0.1));
              case 'default' when s != null:
                controller!.updateSettings((x) => x.display.scale = s.display.scaleDefault);
              case 'exit':
                exit?.call();
            }
          },
          itemBuilder: (_) => [
            if (controller != null) ...[
              PopupMenuItem(
                  value: 'bigger',
                  child: ListTile(leading: const Icon(Icons.zoom_in), title: Text(tr('화면 크게')), dense: true)),
              PopupMenuItem(
                  value: 'smaller',
                  child: ListTile(leading: const Icon(Icons.zoom_out), title: Text(tr('화면 작게')), dense: true)),
              PopupMenuItem(
                  value: 'default',
                  child: ListTile(
                      leading: const Icon(Icons.fit_screen_outlined),
                      title: Text(trf('기본 크기 ({0}%)', [(controller.settings.display.scaleDefault * 100).round()])),
                      subtitle: Text(trf('지금 {0}%', [(controller.settings.display.scale * 100).round()])),
                      dense: true)),
            ],
            if (exit != null) ...[
              const PopupMenuDivider(),
              PopupMenuItem(
                  value: 'exit',
                  child: ListTile(
                      leading: Icon(Icons.power_settings_new, color: JjColors.danger),
                      title: Text(tr('종료')),
                      dense: true)),
            ],
          ],
        ),
      ]);
    }
    return Row(mainAxisSize: MainAxisSize.min, children: [
      // CPU · MEM: 변환 · AI 작업이 PC 를 얼마나 쓰는지 (PC 전체 기준)
      if (usage != null && showUsage && !compact) UsageView(usage: usage),
      // 화면 크기: −  100%  +
      if (controller != null) ScaleButtons(c: controller),
      const SizedBox(width: 4),
      if (controller != null)
        IconButton(
          tooltip: tr('환경 설정'),
          icon: Icon(onSettingsPage ? Icons.settings : Icons.settings_outlined,
              color: onSettingsPage ? JjColors.accent : null),
          onPressed: onSettingsPage
              ? null
              : () => Navigator.push(
                  context, MaterialPageRoute<void>(builder: (_) => SettingsPage(c: controller))),
        ),
      if (exit != null)
        IconButton(
          tooltip: tr('종료'),
          icon: Icon(Icons.power_settings_new, color: JjColors.danger),
          onPressed: exit,
        ),
    ]);
  }
}