// 触屏手柄按钮定义与默认布局（对应 web 版 settings.js 的 BUTTONS / DEFAULT_TOUCH）。
// 坐标 cx/cy 为相对舞台中心的百分比，size 为按钮边长（px）。
import 'package:iwbtc/src/core/save.dart';

class TouchBtn {
  final String key;
  final String label;
  final String shape;
  final String? label2;
  final double cx;
  final double cy;
  final double size;
  const TouchBtn(this.key, this.label, this.shape, this.cx, this.cy, this.size,
      [this.label2]);
}

const List<TouchBtn> BUTTONS = <TouchBtn>[
  TouchBtn('left', '◀', 'round', 12, 80, 62),
  TouchBtn('right', '▶', 'round', 24, 80, 62),
  TouchBtn('jump', '跳', 'jump', 88, 84, 94),
  TouchBtn('shoot', '🔫', 'item', 79, 72, 54, '射击'),
  TouchBtn('down', '▼', 'item', 90, 72, 54, '下蹲'),
  TouchBtn('pause', '❚❚', 'sm', 81, 58, 42),
  TouchBtn('suicide', '↺', 'sm', 90, 58, 42),
];

const List<List<String>> KEY_ACTIONS = <List<String>>[
  <String>['left', '左移'],
  <String>['right', '右移'],
  <String>['up', '上（上浮）'],
  <String>['jump', '跳跃'],
  <String>['shoot', '射击'],
  <String>['suicide', '自杀 / 重生'],
  <String>['restart', '整关重来'],
  <String>['pause', '暂停'],
];

Map<String, dynamic> defaultTouch() {
  final m = <String, dynamic>{};
  for (final b in BUTTONS) {
    m[b.key] = <String, dynamic>{
      'cx': b.cx,
      'cy': b.cy,
      'size': b.size,
    };
  }
  return m;
}

Map<String, dynamic> defaultSettings() => <String, dynamic>{
      'username': '',
      'touch': defaultTouch(),
      'keys': defaultBindings(),
    };

Map<String, List<String>> defaultBindings() => <String, List<String>>{
      'left': <String>['ArrowLeft', 'KeyA'],
      'right': <String>['ArrowRight', 'KeyD'],
      'up': <String>['ArrowUp', 'KeyW'],
      'down': <String>['ArrowDown', 'KeyS'],
      'jump': <String>['ShiftLeft', 'ShiftRight', 'Space', 'KeyZ', 'KeyN'],
      'shoot': <String>['KeyX', 'KeyJ', 'KeyC', 'KeyM'],
      'suicide': <String>['KeyR'],
      'restart': <String>['Backspace'],
      'pause': <String>['Escape', 'KeyP'],
    };

/// 读取/补全存档里的设置对象（保证 touch / keys 字段齐全）。
Map<String, dynamic> metaSettings() {
  final s = Save.settings();
  if (s['username'] is! String) s['username'] = '';
  if (s['touch'] is! Map) s['touch'] = defaultTouch();
  if (s['keys'] is! Map) s['keys'] = defaultBindings();
  return s;
}

String keyLabel(String code) {
  const Map<String, String> M = <String, String>{
    'Space': '空格',
    'ShiftLeft': 'Shift',
    'ShiftRight': 'Shift',
    'ControlLeft': 'Ctrl',
    'ControlRight': 'Ctrl',
    'AltLeft': 'Alt',
    'AltRight': 'Alt',
    'Tab': 'Tab',
    'Backspace': '⌫',
    'Escape': 'Esc',
    'Enter': 'Enter',
    'ArrowLeft': '←',
    'ArrowRight': '→',
    'ArrowUp': '↑',
    'ArrowDown': '↓',
    'MetaLeft': 'Win',
    'MetaRight': 'Win',
    'ContextMenu': '菜单',
  };
  if (M.containsKey(code)) return M[code]!;
  if (code.startsWith('Key')) return code.substring(3);
  if (code.startsWith('Digit')) return code.substring(5);
  if (code.startsWith('Numpad')) return '小键' + code.substring(6);
  if (RegExp(r'^F\d{1,2}$').hasMatch(code)) return code;
  return code;
}